International Aerospace Discussion

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brar_w
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Re: International Aerospace Discussion

Post by brar_w »

Speaking of Hypersonic:

DOD Contracts Oct. 31, 2016
Raytheon Co., Tucson, Arizona, has been awarded a $174,746,702 cost-plus-fixed-fee contract for a research project under the Hypersonic Air-breathing Weapon Concept (HAWC) program. Fiscal 2016 research and development funds in the amount of $3,410,005 are being obligated at the time of award. The Defense Advanced Research Projects Agency, Arlington, Virginia, is the contracting activity (HR0011-17-C-0025).
DOD Contracts for Sep. 23, 2016
The Lockheed Martin Corp., Palmdale, California, has been awarded a $171,191,252 cost-plus-fixed-fee contract for a research project under the Hypersonic Air-breathing Weapon Concept (HAWC) program. Fiscal 2015 ($12,163,224) and 2016 ($7,193,252) research and development funds totaling $19,356,476 are being obligated at the time of award. The Defense Advanced Research Projects Agency, Arlington, Virginia, is the contracting activity (HR0011-16-C-0110).
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Re: International Aerospace Discussion

Post by brar_w »

Latest graphic released by boeing on their next gen. fighters efforts

Image
brar_w
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Re: International Aerospace Discussion

Post by brar_w »

Lockheed, Raytheon Advance Hypersonic Weapons: Aviation Week - Aerospace Daily and Defense Report

Image
Lockheed Martin has won positions on both of the Pentagon hypersonic weapon demonstrations to fly rocket-boosted and scramjet-powered strike missiles.
Raytheon secured the third contract awarded under the Darpa-led programs, which are expected to lead to flight tests in 2019.

Lockheed’s Skunk Works has received the sole contract for the next phase of the Tactical Boost Glide (TBG) program to demo an air-launched, rocket-boosted hypersonic glider. The cost-sharing contract is valued at $147.3 million.

The Skunk Works also has received a $171.2 million contract, and Raytheon $174.7 million, for the next phase of the Hypersonic Air-Breathing Weapon Concept (HAWC) program to demo an air-launched, hydrocarbon-fueled, scramjet-powered cruise missile.

HAWC and TBG are joint programs with the Air Force Research Laboratory (AFRL), which led the Boeing X-51A WaveRider program. The missile-sized X-51 exceeded Mach 5 in 2013, powered for 210 sec. by a hydrocarbon-fueled, fuel-cooled scramjet engine.

The dual programs will give the U.S. Air Force two options to field a high-speed strike weapon. While HAWC is a follow-on to X-51, TBG builds on hypersonic glide vehicle technology developed under Darpa’s Falcon HTV-2 program.


Two Lockheed-built HTV-2s were ground-launched by a Minotaur booster in 2010 and 2011, in a bid to fly 4,800 nm across the Pacific at Mach 20. But both vehicles were lost 9 min. after launch, during transition to cruise flight from atmospheric re-entry.

The tactical-range TBG is a smaller vehicle, and air launch is likely to simplify the transition from rocket boost through separation to hypersonic glide. Ideally, Darpa says, TBG will also be compatible with the U.S. Navy’s shipborne vertical launch system.


Key requirements for TBG are controllability and robustness over a wide-operating envelope, as well as reduced cost for an operational system. Raytheon participated in Phase 1 of the program, which covered conceptual design of an operational weapon and preliminary design of a demonstrator.

In addition to hydrocarbon scramjet propulsion for sustained hypersonic cruise, HAWC is focused on improving speed, range and altitude over the X-51, and demonstrating efficient high-speed flight, thermal management at high temperatures in the cruise, and affordable manufacturing.

Raytheon’s move into Phase 2 is notable, as the X-51 developed by Boeing also participated in the first phase. For Lockheed, meanwhile, HAWC is a steppingstone to its SR-72 concept for a Mach 6 aircraft capable of operating from runways using turbine-based combined-cycle (TBCC) propulsion.

Where the X-51’s Pratt & Whitney (now Aerojet Rocketdyne) scramjet had a two-dimensional inlet and combustion chamber, HAWC artists’ concepts show a missile with a more efficient inward-turning, or streamline-traced, inlet and round combustion chamber.


This type of hydrocarbon-fueled dual-mode ramjet engine is a key component of the turbojet/scramjet propulsion system that Lockheed is pursuing to power the reusable SR-72 from zero airspeed to hypersonic cruise and back to a runway landing.

After several previous attempts, Darpa has launched the Affordable Full-Range Engine (AFRE) program to ground-demo TBCC mode transition from an off-the-shelf turbine engine to a dual-mode ramjet sharing the same inlet and nozzle.

The goal of AFRE is to show that the Mach number at which the ramjet/scramjet takes over propulsion can be reduced to a speed low enough to enable use of existing low-Mach turbine engines. Darpa plans to make a Rolls-Royce F405-402 turbofan from the T-45 trainer available for the demo.
Manish_P
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Re: International Aerospace Discussion

Post by Manish_P »

Can you please elaborate on the differences

A few which i thought i saw -
a) a different shape for the engine inlets (more flush and flatter but curve is more pronounced now - so the blade fans are even more hidden),
b) the canards have gone
c) the pilot canopy glass area seems to have reduced significantly

brar_w wrote:Latest graphic released by boeing on their next gen. fighters efforts
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Re: International Aerospace Discussion

Post by brar_w »

The Canards were never meant for the AF design. Boeing always had the cockpit area like that with the pilot sitting deep inside. With DAS this was even not an issue for the F-35 so I don't think it would be a tough sell on something in the future.

These designs are a very good indicator of what the final design will NOT look like. Keep in mind that it took them well over a month to get the required approval to relase a simple sketch of the B-21. That was after a PDR and well into development. It would be absurd for OEM's to share designs that are likely to be serious contenders. Broader trends may still hold. Boeign has been publishing a lot of research when it comes to getting rid of the tail.

This particular design, and its various iterations have actually been a consistent focus of Boeing PR -



Lisa
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Re: International Aerospace Discussion

Post by Lisa »

http://www.planeandpilotmag.com/article/speed-is-life/

Speed Is Life

Received by mail a long time ago. Have finally traced the original article. SR71 antics!
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Re: International Aerospace Discussion

Post by Prem »

The Associated Press ‏@AP 1m1 minute ago
BREAKING: Marine Corps: 2 F/A-18 jets collide over Pacific off San Diego; 1 lands safely at base, other pilot safely ejects.
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Re: International Aerospace Discussion

Post by Prem »

http://www.msn.com/en-us/money/companie ... id=U453DHP
Pentagon to Lockheed: Take It or Leave It
The Defense Department apparently got tired of getting nowhere and on Tuesday the generals made an offer to Lockheed that the company essentially cannot refuse: $6.1 billion for 57 planes, take it or leave it.The definitized contract for LRIP 9 announced today was not a mutually agreed upon contract, it was a unilateral contract action, which obligates us to perform under standard terms and conditions, and previously agreed-to items. We are disappointed with the decision by the Government to issue a unilateral contract action on the F-35 LRIP 9 contract.
Lockheed and the Pentagon couldn't even agree on how long contract negotiations had been going on. Lockheed said 14 months, while the Pentagon said 18 months. Either way, the Pentagon believes it's been long enough.The Pentagon's price works out to about $107 million per plane and likely includes an unspecified amount for further development, a decrease of 3.7% compared with the previous contract, LRIP 8, that was 3.5% lower than the LRIP 7 contract signed in 2013. LRIP 8 represented a price that was 57% lower than the first LRIP. LRIP 8 was worth $4.7 billion to Lockheed.
Lockheed warned in a regulatory filing last month that it faces a "potential cash exposure" of about $950 million and a $2.3 billion termination liability exposure" for the LRIP 9 and 10 contracts.
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Re: International Aerospace Discussion

Post by Kartik »

Indo Def 2016- Inside the Gripen C simulator

Impressive cockpit and ergonomics.
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Re: International Aerospace Discussion

Post by Kartik »

Israel integrates Spice 1000 onto F-16 fleet
The Israeli air force (IAF) is integrating the Rafael Spice 1000 precision bomb onto its Lockheed Martin F-16C/D aircraft.

Spice 1000 is a 453kg (1,000lb) bomb equipped with a guidance kit, with pop-out wings that extend its range to more than 100km (54nm).

The IAF's F-16C/D fleet belongs to the "First Squadron" that operates from Ramat David air base in the north of Israel, which is currently performing the acceptance tests of the weapon system. This follows assessments carried out by the IAF’s test squadron.

The IAF expects to reach full operational capability with the Spice 1000 in the coming weeks.

Israeli sources say that the Lockheed Martin F-35, which will soon be delivered to the IAF, will also carry the Spice 1000.
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Re: International Aerospace Discussion

Post by Kartik »

Russian Navy MiG-29K crashed off the Mediterranean after take-off from Kuznetsov

MiG-29K of the RuN crashes off Mediterranean
Russian MIG-29K jet crashes in the Mediterranean Sea after taking off from the Admiral Kuznetsov aircraft-carrying cruiser, the Russian Defense Ministry said.

The pilot of the MiG-29K fighter jet ejected, his life is not in danger, the Russian Defense Ministry said. According to the ministry, technical fault was the reason for the incident during a training mission. "An aviation accident with carrier-based fighter MIG-29K occurred during exercise flights as a result of a technical fault during the approach landing a few kilometers from the Admiral Kuznetsov aircraft-carrying cruiser."

...
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Re: International Aerospace Discussion

Post by shiv »

F-35 workshare: Why would these nations want to share with India for make in India if we went for F-35
http://www.janes.com/article/65363/us-a ... -of-labour

The US Department of Defense (DoD) announced on 7 November that it had assigned the first international maintenance, repair, overhaul, and upgrade (MRO&U) assignments for Lockheed Martin F-35 Lightning II Joint Strike Fighter components.

The work is being broken into 774 components, which is subsequently being broken into 18 categories, such as avionics, life support, and pumps. Of these 774 components, 65 parts have been assigned, with the remaining areas to be allocated over the next two to three years.

Of these 65, 48 have been assigned to the United Kingdom, 14 to the Netherlands, and three to Australia for global repairs from 2021 to 2025. All maintenance work is, until 2025, to be undertaken globally, when a shift to regional support will take place as operational fleets grow and work can be undertaken in-theatre.

According to the UK Ministry of Defence (MoD), the work will generate "hundreds of millions of pounds of revenue for the UK defence industry, with the potential to unlock more than GBP2 billion (USD2.48 billion) of future F-35 support revenue over the lifetime of the programme".

The United Kingdom's offering is based on a partnership between the UK government's Defence Electronics & Components Agency (DECA), BAE Systems, and Northrop Grumman. Within the United Kingdom, the MRO&U work will take place at DECA's facility at MoD Sealand, in north-east Wales.

Beyond 2025, 51 of the first 65 packages will be allocated to the United Kingdom, and 14 to the Netherlands. Initial airframe MRO&U capability will be undertaken at the F-35 Final Assembly and Checkout facility in Italy - a capability that is scheduled to begin in 2018 - and engine heavy maintenance to be initially provided by Turkey. It is envisaged that Norway and the Netherlands will provide additional heavy engine maintenance capability from 2020-2021 for Europe.
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Re: International Aerospace Discussion

Post by svinayak »

shiv wrote:F-35 workshare: Why would these nations want to share with India for make in India if we went for F-35
http://www.janes.com/article/65363/us-a ... -of-labour
Any agreement for F-35 would allocate a quota for that nation.
This kind of multinational project is for cold war and old alliance. This is outdated for the new world which is emerging.
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Re: International Aerospace Discussion

Post by brar_w »

tsarkar wrote:The state of readiness & timeliness of the F-35 http://aviationweek.com/site-files/avia ... 35memo.pdf

I once attended a think tank discussion in which an ex POGO aid was asked about the JSTARS to which he replied that the system is completely untested and is likely to remain so till long after the first few aircraft are retired :). For them no DOTE Stamp = No Milestone C = Not Working and if you get waivers and even use it in two wars to the operator's satisfaction it still means = Not Working.

The thing with he JSF is that the program, with political support diverted $$ from operational testing to development while at the same time the operational testing bureaucracy increased OT requirements (and therefore money required to do so) at a time when the politicians and the S&T community wanted to remove redundant testing to save development time in future systems. As a result the politicos were left with two choices - Either to increase program funding to account for this and keep the operational test fleet funded at the levels required to deliver a couple of dozen aircraft DOTE requires to start and finish its work in time (they actually don't do anything themselves, just ask the services to do so and then report their own interpretations) OR to move Operational testing to the right by a year or two and fund the difference in cost then. The chose to maintain current funding levels and add the couple of hundred million required for OT towards the fag end of the SDD program which has now meant a 8-14 month delay in getting the Edwards AFB aircraft ready so that they can do a DOTE approved Operational Testing.

The services have all done their own operational assessment at different maturity levels and this will continue as increment capability is added but a formal completion of OT is required for any program (regardless of size) to transition from LRIP to FRP, unless otherwise granted a waiver. This current report is from September and some of the points highlighted in it are from the summer and the operators and JPO have came out with their own rebuttals while showing the surge numbers in test-point completion since the report was released. Gilmore cites issues with Block 3F software which is not flying on any aircraft that is operational. As was the case with 3I and 2B before it 3F will go through many iterations and gradual maturity improvement. No operational aircraft is expected to get 3F till late 2017 or well into 2018 so there is time to get a stable version into dev. testing.

His gripe is with the two dozen or so aircraft he was to get, and them not being sufficiently mature so that they can be delivered to him in time as was promised. The JPO's answer to that is that they did not get extra $$ from the politicos and delays, and development hurdles forced them to keep the Edwards fleet running longer to support development. They could simply not take out development test aircraft send them for the depot for weeks/months, have them retrofitted to production standard in support for OT needs in 2017. I mean they could have done it, but these aircraft would have come out of the depot and gone straight into supporting development and the DOTE report then would have said that they took development aircraft out of the dev.Test fleet for months so the stuff they were doing came to a screeching halt. On the positive side at least Dr. Gillmore is not asking to get two dozen brand new jets to support his needs and is unhappy but OK with waiting for the current development test team (Plus an operational squadron) to catch up and modify the aircraft to represent a high LRIP block attributes.

Also note that the 'state of readiness' numbers cited in this report do not concern the operational fleet. They concern the DT/OT fleet which has not yet been taken out of its duties and sent to get the refresh all other aircraft have been getting and the numbers also do not reflect the In Service / Operational fleet which is LRIP 5-8 production jets.

Meanwhile, the operator community doesn't seem to care for them what is important at this point is naturally the stability in Block 3I (which they are operational with) and the ability to quickly turn around 3F and deliver it to them. 3F will be loaded on to operational aircraft in 2018 regardless of when Dr. Gillmore gets his OTE fleet. OT impacts full rate production not how the three services assess their aircraft and how they choose to deploy with them.

The USAF, USN, and USMC along with all other air-forces and Navy's in the program go to their subject matter experts and through their own operational assessments before taking the decision to declare a particular capability operational. The USAF didn't need a DOTE report to take a decision on the IOC, they took the first squadron, sent it to another air-force base (Mountain Home AFB), and conducted a couple of weeks worth of operational assessment with air-ground simulated threats, and F-16's and F-15's before making that decision. Similarly when they declare Block 3F operational, they will take one squadron and put it through its paces to see whether the software and the associated capability (expanded envelope) is sufficiently mature enough for fleet release.

DOT&E leaked memo suggests F-35 May Never Be Ready for Combat. F-35 pilot doesn’t agree.
Three weeks ago, a memo dated Aug. 9 (one week after the Air Force declared the IOC – Initial Operational Capability – of the F-35A) by Michael Gilmore, the Defense Department’s director of operational testing, obtained by Bloomberg News, highlighted several deficiencies.

“The program is actually not on a path toward success but instead on a path toward failing to deliver the full Block 3F capabilities for which the Department is paying almost $400 billion by the scheduled end of System Development and Demonstration (SDD) in 2018.”

According to chief of the Pentagon’s top testing office, at least 15 capabilities in the F-35’s current software version, known as Block 3i, are either still in need of a fix or aren’t ready for testing.

“Unresolved Block 3i deficiencies in fusion, electronic warfare, and weapons employment continue to result in ambiguous threat displays, limited ability to effectively respond to threats, and, in some cases, a requirement for off-board sources to provide accurate coordinates for precision attack. Although the program recently addressed some of the Block 3i deficiencies, many significant deficiencies remain and more are being identified by operational test and fielded units, many of which must be corrected if the program is going to provide the expected “full warfighting capability” described in the Operational
Requirements Document (ORD).”

The memo provides details about all the hundred deficiencies in Block 3i.

“Because Block 3i is an interim capability based on Block 2B, it has numerous inherent limitations that will reduce operational effectiveness and require workarounds if the F-35A in the Block 3i configuration is used in combat.”

There are limitations in the capability to perform Close Air Support missions (in a permissive or low-threat environment); limited weapon load; no gun capability; limited night vision capability; greater reliance on tankers due to limited on-station time; unacceptable sensor fusion; etc. You can read them all here.

A subsequent POGO article provided an in-depth analysis of the above mentioned memo with the following conclusion: “This DOT&E memo clearly exposes the Air Force’s F-35 IOC announcement as nothing more than a publicity stunt.”

On Sept. 16, a new story written by Major Morten “Dolby” Hanche, the famous Royal Norwegian Air Force F-35 pilot who provided first-hand accounts of what dogfighting in the controversial F-35 looks like to a pilot with a significant experience with the F-16, has been published by Kampflybloggen (The Combat Aircraft Blog), the official blog of the Norwegian F-35 Program Office within the Norwegian Ministry of Defence.

In the new post (reposted below under permission) Maj. Hanche, a U.S. Navy Test Pilot School graduate with more than 2,200 hours in the F-16, currently flying as Assistant Weapons Officer with the U.S. Air Force’s 62nd Fighter Squadron at Luke Air Force Base in Arizona, provides his take on the DOT&E memo.

Once again: “Dolby” is an F-35 instructor pilot from the Royal Norwegian Air Force, one of the Joint Strike Fighter customers. Needless to say, he may have a bias for his plane. Still, he’s a respected test pilot, making public claims and providing tons of interesting details about the aircraft that will help you making your own opinion on such a hotly debated topic.

Lack of perfection does not mean disaster – how I read test reports as a pilot
by Morten Hanche

Yet again, information from the «Director Operational Test & Evaluation» (DOT&E) has stirred critics into a frenzy over the F-35. The fact that the information was leaked seems to have agitated people even more. (We have our hands on classified documents! Now we know it all!) Yet again, the leaked memo described aspects of the F-35 which need improvement. Yet again, the report resulted in press articles which painted a pretty sinister picture of the F-35. The article featured in POGO («F-35 May Never Be Ready for Combat») serves as one such example.

I finished up writing this article before getting ready to fly another sortie in the F-35. Based on my own experiences flying the F-35A, I feel that the media´s interpretation of the previous DOT&E report is influenced heavily by unrealistic expectations – something which seems to be a trend. I don´t see the point in countering every claim that´s being brought up. First off, it´d make for a very long article. Secondly, I would not be dealing with the bigger problem, which in my mind is a lack of understanding.

I fully expect the F-35’s most hardened critics to discount this article, regardless of what I write. However, some may choose to believe my story, based on the fact that I know the airplane and its capabilities as a pilot. I don’t make my claims based on bits and pieces of information, derived from potentially unreliable sources. They are based on experience actually flying and training with the jet for nearly a year

My goal is to shed some light on airplane development and testing; why we test, what we discover in testing and what a test report may result in. I write this based on my own experience, both through education at the US Naval Test Pilot School, but more importantly through working with the F-16 and the F-35, both operationally and in test settings.

What smartphones tell us about technology development

I´ll start with smartphones, as another example of technology development. Admittedly, phones are somewhat different from a fighter airplane, but there are similarities. A smartphone is a complex system of systems – just like a fighter jet. The phones keep evolving with both new hard- and software. It is not unheard of therefore that the manufacturers issue updates. Updates which provide new capabilities, but which also aim to correct previous errors.

According to Wikipedia, Apple released its iOS 9.0 operating system to their iPhones and iPads on 16 September 2015. The 9.0.1 update was issued already on 23 September, followed closely by the 9.0.2 update on 30 September. Then 9.1 on 21 October and 9.2 on 8 December 2015.

Such a frequent update rate might indicate that not everything worked perfectly from the start. Still, wouldn´t it be a bit harsh to claim that the phones didn´t work with the first four software versions? Might the truth be a little more nuanced? Can a smartphone be a good product, even if it doesn´t work 100% from day one? Does a smartphone ever work 100%? I have experienced various strange occurences with my phones over the years. Still, for me, having a phone with all its peculiarities has been more useful than the alternative – not having a phone.

This isn’t an article about phones. The point I´m trying to make is that technology development and testing is a series of compromises; compromises in reliability, in performance and in quality. Only rarely is the world black or white. A machine may work well, even if it doesn´t fulfill all specifications. I´ll go on with a brief intro to how we typically test.

…technology development and testing is a series of compromises; compromise in reliability, in performance and in quality. Only rarely is the world black or white. A machine may work well, even if it doesn´t fulfill all specifications.

How we test a fighter jet

Testing of combat aircraft typically sees a disctinction between Developmental Test (DT) and Operational Test (OT). In short we can say that DT seeks to answer whether the machine works according to the design specifications, whether the machine is safe to operate and what its safe operating limits end up being. OT on the other hand seeks to find out whether the machine can solve a particular task, like: «Is the X-YZ able to provide effective Close Air Support, in the presence of threat A, B and C?»

The test program for a machine like the F-35 is an enormous undertaking. The contours of the F-35´s test program are described top-level in the Test and Evaluation Master Plan (TEMP), totaling 1400 pages. Each sub-test in the TEMP results in a detailed test plan for that event. Especially in DT, a test flight is literally planned down to the minute, in order to accomplish as many test points as quickly and safely as possible. Flight testing is an expensive undertaking.

A test program should discover most important errors and flaws. However, time and resources available make it unrealistic to uncover every single issue. Risk is mitigated by testing the most critical components, like the engine in a single-engined fighter, to stricter tolerances. The amount of testing is a statistically driven decision. We know that there are things we don´t know, even at the completion of testing. We also know that there are likely few gross or dangerous errors which haven´t been found.

Each error we find during testing is documented and characterized. The language and format used is to the point. The test engineer and test pilot type up their findings and typically describe the situation «in a vacuum» – without regard for how costly or difficult it might be to address the issue. Each issue is then related to the mission – how will this quality or problem affect the given task?

Such a test report might read something like: «The SuperToaster 3000 was evaluated for uniform heat distribution and time to crispy toast, at the National Toast Center of Excellence, with room temperatures varying between 65 and 75 deg F. The toasting temperature was selected by turning a dial on the front of the toaster. Even with full crispyness selected, the toaster´s maximum temperature was low, and toasting of even the thinnest slices of white bread took more than 10 minutes. During early morning breakfasts, the time consuming toasting process will result in cranky parents, the kids being dropped off late for school and correspondingly negative effects on their grades and later career opportunities.»

This mission relation was probably a little over-the-top – a little like how some media articles relate its tidbits of information to an imagined F-35 mission. In isolation, a system may not work as advertised, but could there be a workaround? (In the toaster-case, maybe cereal for breakfast?)

Anyway, after the issue is documented, the errors are then catalogued, debated over and prioritized. Test engineers, test pilots, design engineers and customer representatives are often involved in the dialogue that follows when something undesirable is discovered. Together, these will have to agree on a path forward. Completely understanding the issue is crucial. Alternatives could be a re-design, accepting the flaw, mitigating the flaw procedurally or compensating by documenting the issue better. The team will have to compromise when prioritizing. Even when developing a new fighter jet, there are limits to what can be fixed, based on cost, time available, test resources available and also the complexity of the problem. Altogether, development and testing is an iterative process, where adjustments may have to take place during DT, OT or after the system is put into operational service.

Where are we with the F-35?

What is then the current state of the F-35? Is it really as bad as the commentaries to the DOT&E report and DOT&E memo might indicate?

Personally, I am impressed by the the F-35. I was relieved to experience just how well the F-35 performs with regard to speed, ceiling, range and maneuverability. It would have been very problematic if the airplane´s performance didn´t hold up in these areas – there´s just no software update which is going to compensate a draggy airframe or a weak engine. (Read more about such a case in the Government Accountability Office, then the General Accounting Office´s report on the Super Hornet).

When asked about my first flight in the F-35, I compared it to flying a Hornet (F/A-18), but with a turbo charged engine. I now can quote a USMC F/A-18 Weapons School Graduate after his first flight in the F-35: «It was like flying a Hornet with four engines!» (His point being that the F-35 can afford to operate at high Angle-of-Attack and low airspeed, but that it will regain the airspeed quickly when needed). Another unintended, but illustrating example on performance came a few weeks back, when a student pilot failed to recognize that he had climbed through our temporary altitude restriction at 40,000´. The F-35 will happily climb past that altitude.

Another critical aspect of the F-35 is its minimal radar signature. Just as with the aerodynamic performance, the «stealthiness» of the F-35 is an inherent quality of the airframe itself. There would be no quick-fix to a disappointing signature. So far, my impression is that the F-35 is very difficult to find. We see this every day when training with the F-35; we detect the F-16s flying in the local airspace at vast ranges, compared to when we detect another F-35.

Sensor stability, and specifically radar stability, has been an issue. I´m not trying to downplay that the radar´s stability needs to improve, but I am not worried. What would have worried me was if the radar had poor detection range, or if the stability issues were caused by «external» factors like limited electrical power supply or limited cooling available. Fortunately, our biggest issues are related to software, and not performance. I think it´s realistic to expect software issues like this to be resolved (just like iOS 9 eventually ended up working well).

Remember that we´re not trying to re-create another «Fourth Gen» fighter in the F-35. If we had set our aim lower, we´d likely have had an easier job of developing the airplane – it would have been easier to build the F-16 again today. But is that what we need? The F-35´s specifications are ambitious, and reflect a machine which will outperform the previous generation of fighters. Having or not having that kind of military advantage eventually becomes a political question. For now, our leaders think we need that military edge.

In this context, I would like to bring up another point. The F-35 is in its infancy as a weapons system. Yet, it is being compared to mature systems like the F-16. The F-16 has been developed and improved for more than 40 years. Correspondingly, certain aspects of the F-16 are more mature than the F-35 at this time. Having said that, I will caution readers against believing that other and «mature» fighters are without their issues. There has been an unprecedented openness about the F-35´s development. The DOT&E report is one example on how media has gained insight into the F-35 Program. I still ask; do those who write critical articles about the program really have a realistic baseline, from which they can reasonably assess the F-35? Next, I´ll give some examples which have influenced at least my own baseline.

The sometimes messy world of fighter development


Many will agree that the F-16 has been a successful fighter design. The fact that it has been continuously produced since the 1970s should speak for itself. The fighter has come a long way from where it originally started; as a day-only «dogfighter», equipped with heat-seeking missiles. (How would that mission set compare to a post System Development & Demonstration Block 3F F-35 and its mission sets?) Modifications to the «fully developed» F-16 started right away One early and visible modification was the replacement of the horizontal stabilizers with larger «stabs», in order to reduce the F-16´s susceptibility to go out of control during aggressive maneuvering at high Angles-of-Attack (AOA). Going out of control is a bad thing, and could lead to loss of both the jet and its pilot. Since then, the F-16 has kept evolving through many different programs, aimed at improving both structural life and combat capabilities.Other fighters also bear visible marks of error correction. The Hornet-family provides some good examples of aerodynamic «band aids». An example from the F/A-18 «Baby Hornet» is the vertical «fences» mounted on each side of the machine, just aft of the cockpit. These were eventually added to mitigate stress on the vertical tails, which caused their supporting structure to fail.

Another example from the Baby Hornet is how the stabs and rudders are driven to full deflection before takeoff. This modification was necessary to enable the Hornet to lift its nose during takeoff roll. The «band aid» added drag during the takeoff roll. Thus, the takeoff roll increased in distance, but no more than what was considered acceptable. The «band aid» was an easy workaround to what could have been a very costly re-design of the airplane – compromises…

The more modern Super Hornet has a porous fairing where the wing-fold mechanism is located. This was fitted in an attempt to alleviate a problem termed «wing drop». The wing drop in the Super Hornet was described as an abrupt and uncommanded roll, which hampered air combat maneuvering. The «band aid» partially fixed the wing drop issue, but at the same time introduced other problems related to reduced range and increased buffet levels. These were still deemed acceptable trade-offs – compromises…

Even today, our modern-day F-16s live with many issues; errors which were discovered in DT, OT or operational use, but which haven´t been corrected. Either because of prohibitive cost, complexity or because no one understands the failure mechanism – what is causing the problem. I´m not just talking about cosmetic or minor issues. One example is that The Norwegian Armed Forces for a period of about 10 years could not operate its F-16s in single ship formations, in bad weather or at night. The restriction was put in place because the Main Mission Computer (MMC) broke down relatively often. The resulting operational limitations hampered both training and operations. It took more than 10 years to diagnose and correct the issue, mainly because the failure mechanism was illusive.

The most outspoken critics of the F-35 couldn´t have known about our issues with the MMC in the F-16 at the time. If they did, and read that deficiency report, would they have concluded that our F-16s were non-operational, and incapable of fulfilling its mission? I´m tempted to think so, based on how isolated pieces of information about the F-35 often are misinterpreted and taken out of context. Would they have been right in their conclusion? I don´t think anyone could have made that conclusion, based on just the fact that «the MMC sometimes crashes». The reality I know, working with fighters all my life, is not black or white. There are nuances. We work around and overcome problems.

Our F-16s still have issues today which will never be corrected. This is not dramatic or unexpected. The normal state of affairs for a fighter is that we operate in spite of issues with structure, sensors, software and logistics. We´re normally able to work around the major problems while we devise long-term solutions. Some issues are temporary. Some end up being permanent. Compromises… (I personally wouldn´t believe the salesperson claiming to offer a fighter jet which had zero issues).

I said I wouldn´t quibble over individual factual errors which the F-35´s critics present as truth. To me, a compelling argument for how well the F-35 works is evident by what we´re able to do in training. Three weeks back I was part of a four-ship of F-35s. Our mission was to overcome an advanced airborne threat, while locating and destroying an equally advanced surface based air defense system. After neutralizing these threats, we were able to destroy four additional targets. All this prior to receiving the Block 3F capabilities. Suffice to say that this mission would have been close to suicide with a four-ship of F-16s alone!


tsarkar
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Re: International Aerospace Discussion

Post by tsarkar »

Dear Brar_W

The gist of the last two paragraph in your post and the quote in the end is that professional evaluation and certification organizations, like OT&E in US and CEMILAC & ASTE in India, are doing meaningless excessive testing and just putting a a squadron through the paces is good enough to decide whether all capabilities are in place, and especially all safety parameters are met.

This is also what many posters in BR are saying and Pak Fiza'ya is doing - Induct the LCA and complete opening up of the flight envelop in squadron service.

Such incorrect theories glaringly trivialize testing by incorrectly focusing on dazzling glamorous features, like Tejas fires Derby and drops LGBs in case of LCA and F-35 destroys more than 4 ship formation of F-16s, so opening up of flight envelope before IOC/FOC is meaningless.

The example of iPhone is as irrelevant as iPhone users never face life & death situations as fighter pilots do.

And while iOS developers can have a chalta hai attitude, occasionally it can result in life threatening situations

https://www.cnet.com/news/australia-pol ... r-rescues/
Police in Victoria, Australia, issued a warning Monday discouraging iPhone users from relying on Apple's map app after rescuing several people who became stranded in recent weeks in the wilderness following the app's directions -- some who were stranded 24 hours without adequate food and water.

Police said they rescued six motorists who were stranded following Apple's directions to reach an inland city were instead being directed to a national park -- some 43 miles from their desired destination.

"Tests on the mapping system by police confirm the mapping systems lists Mildura in the middle of the Murray Sunset National Park, approximately 70km away from the actual location of Mildura," police said in a statement. "Police are extremely concerned as there is no water supply within the Park and temperatures can reach as high as 46 degrees [Celsius, roughly 115 degrees Fahrenheit], making this a potentially life threatening issue.

"Anyone travelling to Mildura or other locations within Victoria should rely on other forms of mapping until this matter is rectified," the police concluded.
Testing is uncovering potential fatal issues before its put into manufacturing or large scale operations.

Testing gives confidence to the pilot about the edges to which his plane can fly.

Glamorous dazzling features like firing Derby or dropping LGB or doing better than 4 ship F-16s does not give that confidence.

Here are some situations IAF pilots fly http://indianairforce.nic.in/fsmagazines/APRIL_13.pdf

Knowing what their aircraft could do - like in case of disorientation - saved many a situation.
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Re: International Aerospace Discussion

Post by ricky_v »

sorry if ot, but there is a live streaming of earth from space on youtube channel "space & universe".
brar_w
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Re: International Aerospace Discussion

Post by brar_w »

The gist of the last two paragraph in your post and the quote in the end is that professional evaluation and certification organizations, like OT&E in US and CEMILAC & ASTE in India, are doing meaningless excessive testing and just putting a a squadron through the paces is good enough to decide whether all capabilities are in place, and especially all safety parameters are met.
I never implied that and neither does the pilot quoted below. Safety and related testing is separate from Operational test and evaluation, and the gripe is with DOTE not with OT&E. Moreover the relationship and scope of responsibility is actually defined in law and procedures within the US. The services decide IOC, and FOC criteria, and then their own evaluation determines whether those have been met, exceeded, are un-met and if so what to do about it. The DOTE does not decide that and does not have the power to influence their decisions. The DOTE does not field a set of Subject matter experts required to do end to end testing but merely relies on the services to provide all that has its own bureaucracy to support as required. Needless to say they too much like the services can get things grossly wrong as they did quite recently when they lobbied hard (through document leaks, official testimony and through the regular media channels that get such information leaked) to get $50 or so million to conduct early trials on a particular Navy system earlier than had been planned by the Navy. The DOTE personally testified that he would be there in person to witness them and then chickened out at the last minute..the results of those DOTE monitored trials ran contrary to what the DOTE had argued would happen.

Where the DOTE has influence is not in meddling with the service's but with advising the Congress on milestone decisions. As per law, unless a waiver is granted the DOTE needs to sign off on on Milestone-C decisions which take a weapons system from Low Rate production to full rate production. Generally, to do so they need to conduct full operational testing (and keep in mind that OTE is just one of the few operational assesments that would have been conducted on any system - It would by all means not be the ONLY ONE) which for this program involved the JPO converting the entire DT fleet at Edwards into operationally representative 3F aircraft, and over and above that also providing one complete squadron worth of aircraft and assets to the OTE. Of course they will do so as is the law but what has ticked off Gilmore is that it will come in late. There is a perfect explanation for this - The JPO was confronted with two choices -

- Ask for more money to build up the development-test fleet in order to simultaneously have development aircraft to support 3I and 3F development, while also having operationally representative aircraft ready for OTE in time.

- Delay DT to OT conversion in order to avoid massive development slippage in terms of capability.

They chose option 2 because their first priority is to complete development with the shortest delay possible so as to minimize any disruption to individual service's bed down plans. They'll still give Gilmore his jets, just a year or so late. Congress could have stepped in, and just increased program funding to negate this delay but they did not because in the global context a year delay in OTE has really no impact on the actual process of induction of the aircraft unless you have a different goal than to complete development and field capability to the operator's satisfaction. What is also likely to happen (my guess) is that the Congress grants the program a milestone C waiver and it enters full rate production without OTE, with OTE following a year or so later. There are potentially billions of added costs if you add another LRIP block beyond the 11 or so planned as opposed to moving to the first FRP.

One can go down the list of the IOC criteria and even the DOTE couldn't conclusively prove that any mandated set has remained unaddressed or unmet prior to the Marines or the Air Force declaring their jets operational. What he is talking about in his report does not pertain to that capability but to a higher capability not expected to be introduced in the fleet till a year to 18 months from now.

There are 4 groups that the F35's out there fall in -

1* Those that support the developmental testing and will never be converted to higher standards
2* Developmental test aircraft currently running block 1 or 2 software and hardware, w/o any concurrency changes applied to them but expected to receive full 3F capability to support OT&E
3* Aircraft in testing, training and supporting non operational activities that are in the pipeline for receiving concurrency changes through the individual service run plans at the depot level.
4* Aircraft comming out of production now or those that have gone in and had the depot changes incorporated to them to get them to the block 3I standard

Out of these only the last one has operational relevance. Group one will be retired once they accomlish what they set out to do, or they'll be moving over to different roles that do not require upgrades. Group 2 and 3 are in transition to get to the same state as group 4, while group 2 holds on until it has fulfilled its critical mission of supporting development of the last SDD block (3F). Only group 4 aircraft, or those in group 3 that have reached the same standard as group 4 are opertional or will be declared operational in the future. At the moment the next couple of squadrons for the Marines and the USAF that IOC are all new ones, with aircraft comming out of LRIP8, 9 and 10. Eventually more and more Pre LRIP6 aircraft will get to full stanadard as per their internal plans and depot capacity.


If you want to look at how testing, safety and software stability pertains to operationally coded aircraft then you look at the versions and configurations these aircraft are flying with, not the ones that the development-test fleet is flying with which is not expected to be ported on to the operational fleet for at least another year.

http://aviationweek.com/combat-aircraft/us-air-force-f-35s-ready-first-overseas-deployment

Where DT pilots at Edwards were having trouble booting-up their aircraft about once out of every three flights, Palz says the F-35s at Hill have been able to maintain an “abort rate” of less than 2%. This level of reliability is impressive, he says, particularly compared to legacy aircraft.

“I could tell you, for my F-16 unit next door—that is not the case,” Palz says.

Meanwhile, the “break rate” for the Hill F-35s—how often the aircraft breaks after a flight—is just 5%, compared to about 13% for the F-16s here, Palz notes. The F-35 pilots rarely see shutdown events of the aircraft’s mission systems during flight, and so far there have been no instances where flights were diverted or aborted due to software glitches, he says.

One reason for the improvement is that Hill has Lockheed’s most recent F-35 production build, low-rate initial production lots (LRIP) 7 and 8, while the aircraft at Edwards are from LRIP 4, an earlier F-35 build.

“It’s almost a different version, so we have the most mature, vetted, capable, modified aircraft in the fleet, where your Eglin and Luke [AFBs] do not,” Palz says. “I couldn’t do half with those aircraft what I can do with these aircraft.”


Testing is uncovering potential fatal issues before its put into manufacturing or large scale operations.

Testing gives confidence to the pilot about the edges to which his plane can fly.
Which is the scope of the developmental testing and not operational testing that is left for the aircraft and which is the main thing being debated. You must first distinguish b/w operational assessment of a product with an assessment of its safety and whether its systems perform as per the desired requirements The former is done under the supervision of the DOT&E, while the DOT&E is only a passive observer on the latter. All safety related matters are handled during developmental testing since it would be unwise to be well into production, and commit a decade + of development funding to something to have to wait for it to be deemed safe at the last minute.

No one is arguing against the OTE or the DOTE (there is a distinction between the two since the DOTE staff is merely interpreting OTE actions and not doing independent testing of their own) is but one needs to be clear about what they do and what they do not do. They do not tell the USAF how it should assess a wepaons system. If the USAF goes through its process of vetting any DT or OT plan, and decides to eliminate test points they hold themselves accountable based on their established procedures to do so. The DOTE does not have the authority to overrule them. All the DOTE can do is suggest to the Congress and other civilian leaders that XYZ has been eliminated and ask it to re-consider reinstating these test points. The Congress listens to the service's pov and then can put money in for additional testing if it finds their argument is unconvincing. Similarly the DOT&E can go to the OSD and plead his/her case and convince the OSD to effectively overrule the service (s) or the program office. This was exactly what happened with the Navy system i cited earlier. Navy pushed one particualr trial to the right, DOTE (Gilmore) objected to the Secretary of defense, OSD rejected his request, DOTE objected infront of Congress and got them to add $50 million to move testing ahead citing his disagreement with the Navy's interpretations. Even if we ignore that Gilmore came out totally wrong it shows how the process is meant to work.

The DOTE can't unilaterally do so. The DOTE is not the ultimate arbitrator or the decision authority on the adequacy of testing, or even what should be eliminated or added as test plans change with maturing systems.

I think it would be better to look at who does the actual DT and OT, who decides the plans, procedures and scopes for the same, and what the role of the DOTE is in all this. They are all looking at the same data not two different conclusions being drawn based on two different test activities. Lastly, as previously mentioned OT&E completion impacts Milestone-C and the next production rate transition (from high LRIP to FRP). It does not impact IOC, FOC or affect operational readiness in any sort of way.

I think let's first understand that this is about conducting a timely (not to disrupt M-C) OT&E and not something that is relevant to safety in any shape or form since that is covered elsewhere and is not covered in the final OT&E . Let's also understand that the many assessments pertaining to developmental and operational scenarios conducted on the aircraft have been in accordance with procedures jointly developed with the OT&E community. The USAF and USMC have operationally assessed the aircraft and the block 3I standard. They declared it operational only after doing so through a well laid out process with decision authority residing with the Air Combat Command boss (USAF) and the Marine aviation boss. What the OT&E covers is the Operational assessment of full SDD capability so that the Government can conclude the development phase of the aircraft and enter full rate production and follow-on development. They don't wait till the fag end of development to put it through its paces in an operational context but do so incrementally whenever a new capability drop arrives. Formal OT&E is just one where everything is taken together as per the original SDD requirement or minus or addition of any modification to it over the years.

There have been programs that have gone from developmental testing, straight to combat, and have allowed enough real-world_combat assessment to convince the operator community to seek complete waivers from formal OT&E's that take away operational assets and cost a lot of money. One such system was the JSTARS. I'm not saying that this should happen but only highlighting that we need to put the final OT&E exercise in proper context and that it would be wrong to state that in the absence of the OT&E the F-35 will never complete development indefinitely as some in the media try to spin this as. In fact, if the JPO rushed DT jets for rapid conversion in support of the original OT&E schedule the Axe's of the world could have convincingly made a SAFETY argument since what the DT jets are currently doing is testing out changes to see whether they are safe or not before they are implemented on the fleet. Take away this crucial role by putting aircraft in the depot fro weeks to months and you have to rely more heavily on synthetic means to verify fixes which would no doubt outrage Gilmore more than anyone else.

Moreover if one did an autopsy of bad programmatic decisions on the JSF and earlier programs you'd realize that what the DOTE does addresses at the most 10% of those. Its actually the ICE process that has a much higher positive impact than the DOTE empowerment does. All the DOTE does is advise the Congress which then balances what they see in their report, with what the operator community tells them and decides. The problem with the JSF is/was never about insurmountable technical challenges but more about faulty, over ambitious cost and schedule assumptions.
Last edited by brar_w on 18 Nov 2016 16:57, edited 1 time in total.
Austin
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Re: International Aerospace Discussion

Post by Austin »

PHOTOS : Iran has opened the air show Iran Air Show 2016

http://bmpd.livejournal.com/2262203.html
rkhanna
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Re: International Aerospace Discussion

Post by rkhanna »

Su-35 Go Drone. New mode allows it to be controlled by Pilots on the Ground

Need help with Translation:

http://izvestia.ru/news/643567
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Re: International Aerospace Discussion

Post by Kartik »

US State Department approves Kuwait and Qatar fighter sales
Pending Congressional approval, the sales of 72 Boeing F-15QA Strike Eagles to Qatar and 40 F/A-18Es and F/A-18Fs Super Hornets to Kuwait are expected to go through, the US Defense Security Cooperation Agency announced this week.

The Qatar and Kuwait sales could help save Boeing’s Super Hornet and EA-18G Growler line at its St. Louis, Missouri facility, which has slowed production of the aircraft to two per month. The Kuwait sale would extend the F/A-18 line through mid-2018 and combined with orders from the US Navy, Boeing would continue building two Super Hornets per month into the 2020s, Boeing officials told reporters in September.

US Air Force acquisition officials expected the fighter deals would have wrapped up two years ago, but interagency delays slowed down the process, Heidi Grant the USAF’s under-secretary of international affairs, told reporters at an Air Force Association event outside Washington this week.

“It took us three years to get to yes, but we got to yes,” Grant says. “We kept pushing it even though it was kind of a no for now.”

Grant told reporters the recent presidential election did not affect the deal and no conversation with president-elect Donald Trump’s transition happened. However, there could be opportunities for the new administration to make a decision on the fighter jet deals.

“I have received no direction about what to expect from the new administration, therefore I’ll keep moving forward,” she says. “Until January 20, we’re under the current administration.”

Kuwait has requested 32 F/A-18Es with F414-GE-400 engines, as well as eight F/A-18F jets with F414-GE-400 engines. The total package, estimated at $10.1 billion, also includes 41 Raytheon APG-79 active electronically scanned array radars and 20mm guns.

DCSA outlined fewer details for the Qatar sale, stating the estimated $21.1 billion deal would include the 72 aircraft plus weapons packages, lead-in fighter training and procurement for various weapon support.

While Boeing breathes a sigh of relief for its F-15 and F/A-18 production lines, Lockheed Martin is still awaiting the approval of its F-16 sales to Bahrain. As Lockheed’s F-35 production line has expanded, its F-16 production in Ft. Worth, Texas has dwindled and may be in jeopardy of shuttering at the end of 2017 without a boost from foreign sales.

In late September, Congress began the process of examining the sale to Bahrain shortly after the US signed a $38 billion, 10-year military assistance package to Israel. That deal may have helped calm Israel’s concerns over a US fighter jet sale to Gulf states.

The F-16 deal appears to be moving forward, Grant says. Lockheed has promoted the F-16 in several countries, including Indonesia and Colombia.

“My role is to be an advocate for the sales,” she says. “There’s many countries out there that are still interested in the purchase of the F-16 and my role is pushing forward.”
The trend with all fighter sales is worrisome..billions seem to be the norm nowadays, for relatively small numbers of jets.
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Re: International Aerospace Discussion

Post by brar_w »

ME sales aren't really indicative since they get bespoke hybrid deals (FMS plus Commercial) with bulk support handled by OEM's in their country. Kuwait is getting CFT's so Boeing will complete that aspect as well. Wouldn't be surprised if they chose other elements of the Advanced Super Hornet. Qatar has gone in for the new cockpit that Boeing designed for the Saudi F-15's and I believe Saudi's control the IP on it and the DEWS system as well.

For these two aircraft's, the Australian Super Hornet deal, and the South Korean or Singaporean F-15SG deals are probably a better indicators on what a more reasonable operator would choose. But yeah, overall trend is getting higher because they are asking for higher and higher end capability and customization. For the F-15E's the Saudi's paid for FBW, increase in hard-points, a new EW suite, IRST, mission computers and a brand new cockpit. That's a fairly radical upgrade given the investment required, and will naturally cost a ton since there is no one (until the Qatar deal is finalized) there to amortize the cost and there is no incentive for Boeing to carry some of it given its unlikely to sell many more aircraft to recover its investment.

What you are also seeing happen to a greater extent is that operators are passing on a lot of the operational cost over to the OEM through PBL and other long term support contracts that are now included upfront just like the Rafale deal that had a 5 year PBL as part of the deal. Japan was adamant on signing a PBL for the F-35, and actually held up negotiations until they got Lockheed to commit to one for a fighter that wasn't even operational yet (a big gamble).
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Re: International Aerospace Discussion

Post by Chinmay »

So a bespoke hybrid deal would be somewhat like the Rafale deal for the IAF? It seems on the surface atleast, that the Rafale works out cheaper than the SH. 36 aircraft + support + 50% offsets for 8.85 billion USD vs 40 aircraft + support for 10.1 billion USD?
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Re: International Aerospace Discussion

Post by brar_w »

You can't compare it like that unless you know what the logistics contracts for each are since different air-forces have different capacities to absorb long term O&M work while others outsource a lot of it to the OEM's. It appears from the FMS announcement that it is stacked up with a fairly beefy logistics contracts, and knowing a typical ME customer they pretty much want contractor or host service furnished logistics and support right down to long term training. Historically no one has paid this much for the Shornet, not the US Navy, and not the Australians who also operate the Growler in addition to the regular Super Hornet. In the MRCA context the IAF/MOD would know whether the Rafale bid was below that of Boeing's which I doubt.

The deal only discloses the airframe, engine and non Boeing supplied systems. Out of the advanced SH systems only 2 were non Boeing systems that were high enough in price to have the US government negotiate separately for an FMS customer. One was the CFT's which are included here and the other was a weapons pod. The wide panel cockpit, and other changes Boeing had planned would not get a separate line item in the FMS announcement so could be included here. Its not a latest block F-18E/F bought to USN spec, not unless it includes a ridiculous amount of support, logistics and training.

Given the last 3 US major ME deals including the UAE F-16's, Saudi and Qatari F-15 S/QA's I wouldn't be surprised if they end up paying more than what the IAF has paid for the Rafale. If you want to customize and add capability while at the same time asking the OEM to furnish support for prolonged periods, you'll rake up the bill. Of course the more your aircraft differs from the rest the more unique O&M cost you'll end up paying, a lesson the UAE is learning now with their F-16's.

Have a look at THIS. Its $10 Billion for 42 fifth generation fighters including spares, support and performance based logistics contract. Superficially it may appear that Kuwait is paying more for the F-18 than Japan is for the F-35 but the devil is in the detail, what level of support they are asking for, and what sort of O&S cost they are clubbing with the initial contract. If you want the host service or contractor to handle all major expensive stuff you will just pay a disproportionately large share in services cost. The Indian Rafale deal is high because it includes 5 years worth of support through a PBL over and above offset and a weapons and modification package.
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Re: International Aerospace Discussion

Post by brar_w »



GShankar
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Re: International Aerospace Discussion

Post by GShankar »

https://frontlinevideos.com/blogs/video ... inds-blown
RESEARCHERS RAN SR-71'S MANUALLY DESIGNED PLANS THROUGH A COMPUTER--MADE A STARTLING FIND

Image

HOW'S THAT FOR PAPER AND PENCIL DESIGN?

The SR-71 Black Bird is truly a wonder of engineering. You can tell that's the case just by looking at it even if you have no prior knowledge of aviation. The way it looks just screams "radical design."

Now add to that what it actually did. To this day, it holds the world record for the fastest air-breathing manned aircraft. Clocking in at 2,200 mph (and that's what we're allowed to know), this plane could get you from the East to the West coast in 65 minutes and 54 seconds, which is also a record that was never broken. Also, it could soar up to 85,000 ft, which is right by the Stratosphere.

Now here's the kicker. This plane was already in the works in the later part of 1950s with its first flight taking place in 1964. That's only 20 years after World War II when prop planes dominated the sky. Just think about that for a second.

Image

Designed in part by Clarence "Kelly" Johnson for Lockheed and its secret division called Skunk Works, this bird was years ahead in innovation. At those heights and speeds, the external temperatures rose above 500° F and somehow the plane and its crew had to stay together. Everything about it had to be carefully considered.

That's the point of this article. It had to be thought through. In the early 60s no computers existed that could render or even come close to computing how this aircraft should be built. It was all done on drawing boards with pencils, rulers and protractors (if you remember what any of these are.) That's one incredible feat if you think about it.

What's even more incredible is that in the 2000s this design was ran through a sophisticated computer program used to design planes. You're talking about thousands of rivets, angles of the fuselage and about a million other factors that this computer checks for.

Image

The end result? The computer wouldn't do anything different. The design is as efficient as it could be. It was perfect. Komputar agree with man, er.. rather a dead man!!
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Re: International Aerospace Discussion

Post by brar_w »

ranjan.rao
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Re: International Aerospace Discussion

Post by ranjan.rao »

GS, I was seeing a Smithsonian documentary on SR 71: Very interesting stories about it. Few interesting things that I found interesting were
1. They were facing huge timeline pressure, their intel on russian radar capabilities was wrong and U2 got painted early. That really put the program under tremendous timeline pressure. Downing a U2 made things only worse for the designers with the uncompromising position by president to want a plane that flew higher and faster than anything Russians could track
2. The plane made out of titanium wouldn't fit at normal temperature (high temp expansion) so it was leaky so they asked shell to make a less jet volatile fuel. It was that stable that engineers would throw their cig butts in it and still the fuel wouldn't catch fire
3. They went supersonic in the first flight and it was a big statement and confidence in the plane
4. There was a accident in the initial test flights the pilots had a free fall from almost the edge of space. One of the pilots died too. A friend of one of the two pilots, smoked his cigar in his memory when he got to know that the pilot has survived he promised to gift a pack of best cuban cigars. The survivor didn't get that gift till the time interview was taken.
Somehow I felt the challenges for LCA are also the same, timelines and fear of failure, but what made the difference is they persisted with their capabilities.
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Re: International Aerospace Discussion

Post by brar_w »

LHA-6 with 12 x F-35B's, 2 x V-22's and a few Cobra's

Image
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Re: International Aerospace Discussion

Post by rkhanna »

"LHA-6 with 12 x F-35B's, 2 x V-22's and a few Cobra's "

The Americans will field 11 of these. Thats an impressive amount of localized Airpower for a Amphib Force.

Remove the Helos and put 24 F-35 on board and you got yourself a neat Fleet Defence AC
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Re: International Aerospace Discussion

Post by brar_w »

12 F-35B's is about the maximum this ship class will surge up to given that only one or maybe two ships are coming without a well deck for amphibious ops while the others are getting the deck back so will not have the pure aviation focus as this one. More aircraft will most likely demand a small carrier design that can also accommodate an AEW and is better protected organically. There are some influential voices (CSBA) advocating for the Marines to do exactly that. Perhaps they can look to pick up one of the Brit QE's or make them in the US..

The LHA has a surge aviation capability but will always be limited in terms of how well it can protect the fleet and itself given its limited capacity to surge sortie rates unlike a proper carrier, or its ability to field force multipliers such as dedicated recovery tankers (where you don't trade V-22's for F-35's), Electronic Attack aircraft, and long range AEW assets like the E-2D. It is however a great capability as far as the flexibility to maneuver in a fairly packed pacific environment where you'll always be dealing with bubbles of highly protected and transient defenses. This offers robust aviation component but is not a Mini-Carrier as folks wrongly call it sometimes.
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Re: International Aerospace Discussion

Post by brar_w »

brar_w wrote:12 F-35B's is about the maximum this ship class will surge up to given that only one or maybe two ships are coming without a well deck for amphibious ops while the others are getting the deck back so will not have the pure aviation focus as this one.
To correct myself, they actually used this 12 aircraft deployment to war game larger aviation wing deployment scenarios. 20 F-35B's was the number they were looking at, and it could well be feasible for surges but we will have to wait and see. The other limitations still remain
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Re: International Aerospace Discussion

Post by Austin »

https://twitter.com/RSS_40/status/801836544747339782

A year ago Turkish AF F-16 perfidious shot RuAF Su-24 down over Syria. One of two pilots Oleg Peshkov✈️was killed The bomber had no AAM


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Re: International Aerospace Discussion

Post by Austin »

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Re: International Aerospace Discussion

Post by hnair »

brar_w, the under construction INS Vikrant's island looks closer to the LHA class' largish islands. Is there any specific reason why their relative size seem larger than a CVN (underline relative)? Maybe the need to host a third (other than air ops center and navigation bridge) command center for amphibious assault or something?
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Re: International Aerospace Discussion

Post by brar_w »

hnair wrote:brar_w, the under construction INS Vikrant's island looks closer to the LHA class' largish islands. Is there any specific reason why their relative size seem larger than a CVN (underline relative)? Maybe the need to host a third (other than air ops center and navigation bridge) command center for amphibious assault or something?

They do look bigger, particularly compared to the newer Ford Class design. There is an old article from the USNI blog that covers the design of the LHA-6 and I'll try to dig it up. My guess is that on the Ford they have just optimized it to a much greater extent given reducing the island footprint was a design goal both for space and for RCS reduction.
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Re: International Aerospace Discussion

Post by brar_w »

Jane's Defense Weekly, November 24, 2016

UPDATE: DoD awards Lot 10 production contract for F-35
Lockheed Martin has been awarded USD7.2 billion for Lot 10 production of the F-35 Lightning II Joint Strike Fighter (JSF).The contract, awarded by the US Department of Defense (DoD) on 23 November, covers 90 aircraft (without engines) and other programmatic costs.

Comparing the Lot 10 production contract with the Lot 10 engine contract awarded earlier in the year, this latest deal comprises 44 F-35As aircraft for the US Air Force, and 32 for non-US Department of Defense (DoD) and Foreign Military Sales (FMS) customers; 9 F-35Bs for the US Marine Corps and 3 for non-US DoD/FMS customers; and 2 F-35Cs for the US Navy.

The programmatic costs include the correction of deficiencies resulting from concurrency between systems development and demonstration (SDD) and production, and the unique requirements of non-US participants and FMS customers. Work is expected to be completed in March 2020.

Negotiations between the DoD and Lockheed Martin to definitise both the Lot 9 and Lot 10 production contracts have dragged on for a number of months. With these negotiations failing to come up with an agreed price, it was reported that the DoD had imposed its own pricing on Lot 9 and is likely to have also done the same for Lot 10. Though not an exact science, dividing the contract value (including separate previously disclosed long-lead awards amounting to USD1.4 billion) by the number of aircraft gave the Lot 9 a unit cost of approximately USD131 million (without engine), while doing the same for Lot 10 (long-lead items at USD920 million) gives a considerably lower unit cost of approximately USD90 million (without engine).

This figure is close to the USD80-85 million by 2019 target that is the goal of the Blueprint for Affordability effort, and is likely to be significantly lower once the programmatic costs of the deal are removed. It is unclear if this lower cost is a direct result of the Blueprint for Affordability effort, or the result of the DoD imposing its own price following the breakdown in negotiations. Lockheed Martin had not responded to a request for clarification by the time of publication.

There are 356 F-35As covered in the Lot 1 to 10 contracts, of which about 200 have so far been delivered to the US and Foreign Military Sales customers from production facilities in Fort Worth, Texas, and Cameri, Italy. A third and final facility is being built by Mitsubishi Heavy Industries in Japan.

Under the official Program of Record, Australia has a requirement for 100 F-35As; Canada for 65 F-35As (subject to a relaunched procurement process); Denmark for 30 F-35As; Israel for 33 F-35As; Italy for 60 F-35As and 30 F-35Bs; Japan for 42 F-35As; the Netherlands for 37 F-35As; Norway for 52 F-35As; the Republic of Korea for 40 FMS F-35As; Turkey for 100 F-35As; the United Kingdom for 138 F-35Bs; the US Air Force (USAF) for 1,763 F-35As; the US Marine Corps for 353 F-35Bs and 67 F-35Cs; and the US Navy for 260 F-35Cs.


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With LRIP -10 bulk contract being defined it ensures a production increase from 55 or so F-35's per year to 90 per year as they get to this batch. Will be problematic and I'm sure they'll be supply issues but it will be a stepping stone to full rate production where they'll be well above 120 per year.

The aircraft is still in "Low Rate Production" with a just a bit over 150 aircraft yet to be ordered in LRIP before they switch over to Full rate production.
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Re: International Aerospace Discussion

Post by PratikDas »

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Facebook: TeamIndus GLXP Moon Mission
Have you ever seen a rocket ballet? This is known as the 'Korolev Cross' which can be observed in the smoke plumes of the R-7 series rockets during separation of the four liquid-fueled booster rockets attached to the core stage.
The effect is named after Sergey Korolev, who designed the R-7.
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Re: International Aerospace Discussion

Post by Austin »

LOL , Never saw 4 rockets dancing in Sync
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Re: International Aerospace Discussion

Post by brar_w »

Israel to buy an additional 17 F-35 fighter planes
Israel will purchase 17 more advanced F-35 fighter jets from Lockheed Martin, the Prime Minister’s Office said Sunday.The security cabinet voted unanimously to approve the purchase, the statement said, adding that this brings the total number of F-35’s to be acquired to 50.Though the government has not released exact figures for the price, at approximately NIS 387 million ($100 million) per airplane, these additional 17 F-35 fighter jets will likely set Israel back at least NIS 6.6 billion ($1.7 billion), not including the costs of additional maintenance and support equipment.

The F-35 — known in Israel as the Adir, meaning “awesome” or “mighty” in Hebrew — is a fifth generation stealth fighter jet equipped with an array of the latest technology that is expected to anchor the Israel Air Force for years to come.

In June, Defense Minister Avigdor Liberman attended an event in the US in which the version of the plane intended for Israel was unveiled for the first time. Israel is expected to receive the first two planes before the end of 2016, after which another six- seven planes will arrive in each subsequent year.

The option to purchase an additional 17 jets has been on the table for some time, and Sunday’s announcement by the security cabinet seems to confirm that Israel will realize its option to acquire more fighter planes.

Despite taking years to produce, over $1.5 trillion [major fail for TOI] in development costs, and numerous setbacks, Israel’s purchase of the 17 additional F-35s appeared to be a show of confidence in the plane and its abilities.

Israel receives over $3 billion a year from the US in military aid, and early this year the two countries agreed on a new aid package that will see Israel receive $3.8 billion annually through 2028, the vast majority of which must be used on purchases from American defense companies.
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Re: International Aerospace Discussion

Post by brar_w »

External Stores Short Take off from an L class ship -

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DT-III evaluated and validated the Short Take-off and Vertical Landing (STOVL) performance of the F-35B in high sea states, with full weapons loads (external & internal), with asymmetric loading (including taking off with a full load of externals, jettisoning one side and landing), live weapons and night operations.
viewtopic.php?t=5092&p=2006013
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