International Aerospace Discussion

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svinayak
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Re: International Aerospace Discussion

Postby svinayak » 24 Oct 2009 21:37

http://www.space.com/businesstechnology ... aunch.html


Just last month, a U.S. Air Force fact sheet noted that the Air Force Rapid Capabilities Office (RCO), located in Washington, D.C. "is working on the X-37B Orbital Test Vehicle to demonstrate a reliable, reusable, unmanned space test platform for the United States Air Force."

The mission of the RCO is to expedite development and fielding of select Department of Defense combat support and weapon systems by leveraging defense-wide technology development efforts and existing operational capabilities.

"The problem with it [X37-B] is whether you see it as a weapons platform," said Theresa Hitchens, former head of the Center for Defense Information's Space Security Program, now Director of the United Nations Institute for Disarmament Research (UNIDIR) in Geneva, Switzerland.

"It then becomes, if I am not mistaken, a Global Strike platform. There are a lot of reasons to be concerned about Global Strike as a concept," Hitchens told SPACE.com.


The implications of the program as a possible space weapon are surely not lost on potential U.S. competitors, Hitchens said, who may well see anti-satellites (ASATs) as a leveler.

"Would this thing be vulnerable to ASATs? Yes, if it stayed on orbit any length of time," Hitchens added. "While I see value of such a platform as a pop-up reconnaissance or even communications platform, if weaponized it becomes yet another reason for other nations to consider building dangerous ASATs," she cautioned.

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Re: Indian Military Aviation

Postby Aditya_M » 25 Oct 2009 00:54

shiv wrote:It can't fire a Sidewinder (the mag is lying in my car - will re confirm this later

F 35 can't carry more than 2 bombs in its belly.


The first one is interesting, not in the least because of this:

http://www.aeroflight.co.uk/types/usa/l ... h2_300.jpg

Please check :)

About the F-35, I thought it was common knowledge. Two JDAMs + two AIM-9s internally, giving it a near-Nighthawk capability. Any other mission and you have to sling your payload outside. Not sure how many SDBs fit inside.
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Re: Indian Military Aviation

Postby RameshC » 25 Oct 2009 02:23

Singha wrote:on paper:
F22 - 4 x aim9x in side bays, 4 x amraamC7 (clipped fin subversion?) in main bay

F35 - 4 x LGB (of newly slimmed dimension) in its single bay.


The Aim-C-7 is now replaced with the aim-120D, this missile when launched from the f-22 at supercruise allows for a maximum kinematic kill range of over 110NM or just over 200km. F-35 will also deploy aim-120D, meteor will be integrated on it as well.

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Re: Indian Military Aviation

Postby Jagan » 25 Oct 2009 03:29

Aditya_M wrote:
shiv wrote:It can't fire a Sidewinder (the mag is lying in my car - will re confirm this later

F 35 can't carry more than 2 bombs in its belly.


The first one is interesting, not in the least because of this:
http://www.aeroflight.co.uk/types/usa/l ... h2_300.jpg

Please check :)


Unintended Pun? :D


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Re: International Aerospace Discussion

Postby Baldev » 25 Oct 2009 06:36

some old stuff,
Impulse radar "Sokol" (RP-6) For Yak-25 http://www.missiles.ru/_foto/MuzeyFAZOTRON/faz16.jpg
Impulse radar "Eagle" (RP-11).For the Yak-28P http://www.missiles.ru/_foto/MuzeyFAZOTRON/faz9.jpg
Impulse radar "Tornado-A (RP-SA) For the MiG-25P http://www.missiles.ru/_foto/MuzeyFAZOTRON/faz15.jpg
Multi-mode pulse radar "Sapphire-23" For the MiG-23 http://www.missiles.ru/_foto/MuzeyFAZOTRON/faz13.jpg

Multi-mode pulse radar "Sapphire-25 (RP-25) Variant station Sapphire-23. For the upgraded MiG-25PD
http://www.missiles.ru/_foto/MuzeyFAZOTRON/faz14.jpg

Pulsed radars of the second generation of the Sapphire-21 (RP-21). For the MiG-21bis
http://www.missiles.ru/_foto/MuzeyFAZOTRON/faz12.jpg
http://upload.wikimedia.org/wikipedia/c ... lnok_1.jpg
http://www.missiles.ru/_foto/401_k_mai/IMG_7030.jpg

same RP-21 radar http://2.bp.blogspot.com/_o_no4M2xEPY/S ... +RADAR.JPG

Multi-mode radar N-019 for the MiG-29 http://www.missiles.ru/_foto/MuzeyFAZOTRON/faz8.jpg
Last edited by Baldev on 25 Oct 2009 06:58, edited 1 time in total.


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Re: International Aerospace Discussion

Postby kmkraoind » 25 Oct 2009 13:04

U.S. Senate votes to fund F-35 alternate engine

The U.S. Senate on Thursday approved $560 million to continue work on an alternate F-35 engine built by General Electric Co. and Rolls-Royce Group Plc. , defying a White House veto threat.


The bill also authorizes a multiyear purchase of Boeing’s F/A-18 fighters.

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Re: Indian Military Aviation

Postby GeorgeWelch » 25 Oct 2009 20:52

Aditya_M wrote:Not sure how many SDBs fit inside.


2 AMRAAMs + 8 SDB internally

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Re: International Aerospace Discussion

Postby Aditya_M » 25 Oct 2009 21:18

Eight?! Would you have any source for this?

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Re: International Aerospace Discussion

Postby GeorgeWelch » 26 Oct 2009 01:20

Aditya_M wrote:Eight?! Would you have any source for this?



http://www.globalsecurity.org/military/ ... -specs.htm

8 GBU-39 SDB


http://en.wikipedia.org/wiki/F-35_Lightning_II

Small Diameter Bomb (SDB) (Quad launcher counts as a single air-to-ground weapon above.)



http://www.afa.org/ProfessionalDevelopm ... arison.pdf

8 x Small Diameter Bomb (SDB)

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Re: International Aerospace Discussion

Postby Philip » 26 Oct 2009 18:02

OZ going in for the JSF F-35 for the future.

http://www.theaustralian.news.com.au/st ... 71,00.html

Crunch time for fighters
Patrick Walters | October 24, 2009
Article from: The Australian
KEVIN Rudd is poised to sign off on Australia's biggest military buy -- up to 100 F-35 Joint Strike Fighters for the RAAF.

KEVIN Rudd is poised to sign off on Australia's biggest military buy -- up to 100 F-35 Joint Strike Fighters for the RAAF.

The sign off is happening as pressures continue to bear down on defence spending in the face of the global financial crisis.


Federal cabinet's national security committee is set to approve the $16 billion F-35 acquisition in late November but the number of aircraft in the RAAF's initial squadron could be cut from 24 to as few as 14.

On present planning the air force will get its first operational squadron by 2018 with two F-35s to be handed to the RAAF for test and evaluation purposes earlier in the decade.

Defence Materiel Minister Greg Combet is convinced that the JSF is the best choice for the RAAF's next generation air combat capability.

Combet, who recently toured the F-35 plant at Fort Worth, Texas, and held high-level talks in Washington, says the Obama administration's clear preference for the JSF, ahead of any other advanced fighter, is an important sign. "My trip to the US reinforced my confidence that this is the right aircraft for the ADF," Combet told The Australian's Defence report this week.

"On all relevant issues -- that is, the capability of the JSF, its cost and the schedule for delivery, and Australian industry participation -- I came away with greater confidence."

Combet says the extent of Washington's commitment to the new fighter is extremely significant for the Rudd government as it seeks to curb spending in the wake of the financial crisis and still find the money to fund the multi-billion dollar weapons systems called for in this year's defence white paper.

"The US is looking to purchase almost 3000 aircraft and it is the largest defence acquisition the Pentagon has undertaken. Tens of billions have already been committed to the program and the US is determined that it will succeed," Combet says. "From the most senior levels in the Pentagon this message was emphasised to me. So that's very important in the government's consideration."

Combet is adamant the government still intends to buy 100 F-35s, or four operational squadrons. But the procurement is likely to come in batches, with the F-18 Super Hornet likely to remain in service at least until 2025 to accommodate a later delivery schedule for the F-35. Combet says no consideration is being given to acquiring a second squadron of Super Hornets to fill any gap in the RAAF's frontline combat force should the JSF be delayed.

As the new minister responsible for the Defence Materiel Organisation and its $100bn capital budget, Combet brings a sharp intellect and acute political instincts to the most complex and trouble-prone areas of government procurement.

Four months into the job he is coming to grips with a wide range of equipment challenges, ranging from the troubled performance of the $4bn Project Wedgetail airborne early warning system to hard thinking about an acquisition strategy for Australia's next generation submarine.

While the prime contractor, Boeing, is due to deliver the first two Wedgetails next month (more than three years behind schedule), on the Australian side there are still serious concerns about the aircraft's radar performance.

"The meetings I had in the US confirmed that this radar has great potential. We have still got a way to go with this program. All of the intensive effort over the last 12-18 months means that we are now seeing a significant improvement in this program."

Combet's message to Boeing and sub-contractor and radar supplier Northrop Grumman is that the Australian government still wants to see the radar and the aircraft perform to contract specification.

"We are urging them to commit the resources to bring that about. It is still short of where we expected the capability to be in terms of the radar performance. There's a bit of work to go."

The RAN's present and future submarine requirements are a huge concern for Combet, with the operational capability of the Collins boats still vitally affected by crew shortages and a range of mechanical problems. The range of maintenance issues affecting the Collins class are of such a magnitude that it is officially a "project of concern" for the DMO.

At present the RAN is getting marginally less than two Collins boats available for full operational service, a shortfall Combet is determined to rectify. At the same time he is deeply involved in discussions about the design and build options for the planned 12 next-generation boats, which would enter service from the mid-2020's.

Combet intends to spend much of his time in the run-up to the next election focusing on this critical area of maritime capability, including taking a close look at the present and future role of government-owned submarine builder ASC. ASC is due to get a new chief executive by early next year who will be expected to manage the Collins remediation program as well as position the company for a lead role in the design and construction of the new generation boats.

At present Combet says there are no plans to resuscitate the Howard government's plan to privatise the company, a move advocated by many leading defence industry players. Any decision in that regard will await the next term of the Rudd government, beyond 2010.

On the Collins problems, which include the performance of the diesel engines and the electric motors, Combet stresses that he wants to see "continuous improvement" in ASC's performance of the maintenance contract.

"The sustainment of the Collins is a critical component of our national security. I have made it clear to the ASC board and it's an issue I will be continuing in partnership with the DMO," Combet says.

He agrees the next generation submarine will present a key technological challenge for Australia. Close support from the US government and the US Navy will be fundamental, but no consideration is being given to a nuclear-powered option.

"We don't have a nuclear industry to support that (concept) but, more importantly, the government doesn't support nuclear as an option. So there's not even been a debate."

Combet sees no reason a design competition cannot be held for the new submarine. He also gives no guarantee that ASC will be the builder. "The government's policy is that the next generation will be built in Adelaide. That's not a guarantee that ASC will do the work.

"ASC obviously has a tremendously strong position to make a bid for the build. But we are not about to announce that we are sole-sourcing to ASC. We will ascertain what other options there may be for the ship build. The modularisaion of shipbuilding means that you might have a number of players involved."

As well as focusing on immediate projects of concern, Combet's other key priority is to accelerate the reform of the DMO's commercial practices in line with the recommendations contained in the Mortimer review. The Defence Department's $20bn internal savings drive, known as the strategic reform program is also bearing down on the DMO.

"What is happening at the moment is a scoping period. You can't say there is much progress to date in terms of cost savings," says Combet pointing to the requirement for commercially oriented contract reforms.

He also wants the DMO to take responsibility for devising strategies to analyse risk when it comes to the development of new capabilities for the ADF. But there is no plan to reinstate Defence's force development and analysis division, abolished in the 1990s. "This means (Defence's) Capability Development Group focuses on the capability requirements and the DMO focuses on commercial and acquisition strategy while the Defence Science and Technology Organisation focuses on technical risk.

"Out of that process we are expecting and anticipating a better result from our procurement processes: better stress testing on risk and better stress testing of capability definition and more realistic assessments of acquisition strategy."

DMO chief Stephen Gumley says he's pleased with savings achieved in the area of equipment maintenance and sustainment during the past 12 months. DMO met its target of 5 per cent savings or about $230million in a sustainment budget worth nearly $5bn.

"I am very pleased with the co-operation from industry. We have got to do at least the same again. I am confident that provided we work with industry carefully we are going to find ways to achieve SRP savings in both the smart maintenance and the inventory areas," he says.

"It's going to require a combination of productivity in the DMO, productivity in the suppliers and in demand management from the services. These three things will make the SRP happen."

When it comes to the issue of the performance of the Collins-class submarines and ASC, Gumley, a former ASC chief executive, is blunt.

"We are concerned with the amount of availability of the boats, the cost of doing the maintenance, and some of the technical outcomes being achieved," he says.

Gumley hopes to have a new through-life support contract for the Collins in place by July next year.

There are three key performance indicators: submarine safety; improved availability; and reduced cost of ownership.

"Like any complex asset there is a series of technical challenges. We are working with ASC and external consultants to evaluate some of the challenges that we have," he says of the Collins boats.


Last edited by Philip on 26 Oct 2009 18:17, edited 1 time in total.

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Re: International Aerospace Discussion

Postby Craig Alpert » 26 Oct 2009 18:03


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Re: International Aerospace Discussion

Postby Philip » 26 Oct 2009 18:24

Another intriguing UFO incident.Check link for picture.

UFO alert: police officer sees aliens at crop circle
A police officer contacted British UFO experts after seeing three aliens examining a freshly made crop circle near Avebury, Wiltshire.

http://www.telegraph.co.uk/news/newstop ... ircle.html

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Re: International Aerospace Discussion

Postby Aditya_M » 27 Oct 2009 04:01

Thanks, GW. Was hoping for some more authoritative figures but couldn't find them at the manufacturer's. Leads me to wonder just what the dimension of the quad launcher is, because though the bomb is "small diameter", it is nowhere near tiny. Would be an interesting design. Is this it? i.e., are those two back-to-back or is this just a twin launcher?

Image

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Re: International Aerospace Discussion

Postby vsunder » 27 Oct 2009 06:52

Richard Whitcomb is dead.

Incidentally as a matter of history, our very own Marut HF-24 was area ruled, incorporating a fundamental design principle of Whitcomb's of that era, an era of low powered jet engines. His obituary as it appears in today's New York Times.


Whitcomb's obituary

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Re: International Aerospace Discussion

Postby Philip » 27 Oct 2009 11:59

Had I been an American boy,the "Whitcomb winglets",would've been named after myself.I discovered experimenting with and flying paper and model planes in the '60s,a decade before Whitcomb,that when you bent the wingtips,the planes flew better.No one told us of patent rights in those days and patenti9ng one's idea,more's the pity,but gratters to Whitcomb all the same for discovering and developing the ideas that have revolutionised the aircraft industry.Truly a legend.

Here's another intriguing UFO incident just after the massive cloud formation seen over Moscow recently,this time in Romania.Check the link for the video clip.

http://www.telegraph.co.uk/news/newstop ... mania.html

'UFO cloud formation' filmed in Romania
A flying saucer-shaped cloud has been spotted in the skies above Romania – just weeks after a similarly striking formation appeared over Moscow.

By Matthew Moore
Published: 2:07PM GMT 26 Oct 2009

If viewed from a distance the disc cloud, which is outlined by a ring of sunlight, appears to resemble an alien craft.

Meteorologists explained that the phenomenon witnessed in Moscow was just an optical effect produced by rare weather conditions, but the latest clip – apparently filmed at the end of last week – has again set tongues wagging.

Related Articles
Bizarre 'Independence Day' cloud spotted over Moscow
'UFO cloud' spotted over Wales
UFO spotted opposite Houses of Parliament
UFOs spotted by Navy engineer above the M5 motorway
UFOs spotted over Lake District

Air France plane:Lightning strikes on aircraft are commonplace"How come I have never seen clouds that look like that. Now we get two in a matter of weeks in different places," wrote one user of the video-sharing website Live Leak where the clip was first posted.

Others speculated – with tongues firmly in cheeks – that the twin formations could herald an alien invasion.

"Run the two videos and put them beside each other... It's very strange... are they here?" commented a user named Raginswirler.

The two clips appear to show a formation known as a "fallstreak hole", which occurs when moisture in the air cools below 0C but is unable to turn into ice.

While most of the "supercooled" water remains suspended in the sky, rings of ice do form and plunge to earth, leaving doughnut-shaped holes in the cloud layer.

The luminous effect visible in the Russian and Romanian videos is due to the the sun being low in the sky.


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Re: International Aerospace Discussion

Postby GeorgeWelch » 27 Oct 2009 12:35

Aditya_M wrote:Is this it?


yes, the BRU-61/A


http://www.boeing.com/defense-space/mis ... erview.pdf

The SDB System, with its four-place carriage and four weapons, fits on current fighter/bomber external smart stations and in the internal bays of the F-22A, F-35, Unmanned Combat Air Vehicles and B-1 and B-2 bombers.

. . .

BRU-61/A “smart” pneumatic carriage
Payload capacity: four weapons



http://www.boeing.com/defense-space/mis ... index.html

BRU-61/A "smart" pneumatic carriage

* Payload capacity: four weapons
* Weight: 320 pounds (145 kg) empty, 1,460 pounds (664 kg) loaded
* Dimensions (L x W x H): 143" x 16" x 16" (3.6 m x 40.6 cm x 40.6 cm)
* Fits nearly all delivery platforms, including internal/external carriages in the F-22A, F-35, Unmanned Combat Air System (UCAS) and B-1 and B-2 bombers

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Re: International Aerospace Discussion

Postby Philip » 28 Oct 2009 11:30

Sensational experiment.

'We have broken speed of light'

By Nic Fleming, Science Correspondent
Published: 12:01AM BST 16 Aug 2007

A pair of German physicists claim to have broken the speed of light - an achievement that would undermine our entire understanding of space and time.

According to Einstein's special theory of relativity, it would require an infinite amount of energy to propel an object at more than 186,000 miles per second.

However, Dr Gunter Nimtz and Dr Alfons Stahlhofen, of the University of Koblenz, say they may have breached a key tenet of that theory.

The pair say they have conducted an experiment in which microwave photons - energetic packets of light - travelled "instantaneously" between a pair of prisms that had been moved up to 3ft apart.

Being able to travel faster than the speed of light would lead to a wide variety of bizarre consequences.

For instance, an astronaut moving faster than it would theoretically arrive at a destination before leaving.

The scientists were investigating a phenomenon called quantum tunnelling, which allows sub-atomic particles to break apparently unbreakable laws.

Dr Nimtz told New Scientist magazine: "For the time being, this is the only violation of special relativity that I know of."


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Re: International Aerospace Discussion

Postby Kailash » 28 Oct 2009 11:50

Philip wrote:Published: 12:01AM BST 16 Aug 2007

Please check that timestamp.

I can show you a link from 2002 which "seems to" surpass the speed of light, but there is always a catch!

Quantum tunneling is not a new concept has been proved over nanometer distances (mostly photons - not even electrons or any atom sized particles). But something as large as 3 feet, if it was true, is a huge achievement. Considering it is an old article, and we don't know any Germans who got a nobel price in last two years for something like this, safe to assume this is just BS.

*Added later - couple of years back someone managed to reduce the speed of light to 8m/s through some heavily leaded glass etc. The article came out with a title like "Cyclist travelling downhill moves faster than light". Point - there is always a catch.

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Re: International Aerospace Discussion

Postby Kartik » 29 Oct 2009 06:50

Royal Malaysian Air Force to phase out its MiG-29s by 2010.And from the last statement, a Gripen NG buy in the future for the RMAF maybe ?

By ZULKIFLI ABD RAHMAN and LOH FOON FONG, 28 October 2009

KUALA LUMPUR: The Royal Malaysian Air Force’s (RMAF) MiG-29 fighter jets will be gradually phased out and replaced by new interceptor aircraft by Dec 31 2010 due to rising operational and maintenance costs, Defence Minister Datuk Seri Dr Ahmad Zahid Hamidi said.

He said replacement aircraft was needed due to increasing maintenence costs and that the MiG-29s were nearing their lifespan limit of 10 years. Two such aircraft had also crashed in 1998 and 2005.

Zahid said only 10 MiG-29s will be used for airspace defence and this will be reduced to six aircraft until December next year.

“The Government will save RM260mil per year in maintenance costs and these savings will be used to maintain other types of aircraft in the RMAF inventory,” he told Datuk Abd Rahman Dahlan (BN-Kota Belud).

Abd Rahman also asked why Malaysia had bought the MiG-29s.

“Malaysia bought the MiG-29s at a relatively low price, but later on the RMAF had to contend with higher expenses in spare parts replacement and maintenence work,” he added.

Zahid replied that when Malaysia bought 18 MiG-29 aircraft in 1993, the jet was considered the most capable and versatile fighter aircraft that could be obtained at the time.

He also said that each MiG-29 needed to undergo preventive and restoration work which cost RM10mil and RM7mil for engine overhaul every year after it completes a flight time of between 1,000 hours and 4,000 hours.


“The MiG-29s will be replaced by 18 Russian-made Sukhoi SU30MKM fighter jets which the Government had just acquired,” he added.

Later, at the Parliament lobby, Zahid the cost to maintain the MiGs was too high because the jets also needed to be sent to Russia for overhaul work.

Zahid said many countries have also moved towards obtaining fighter jets with multi-role combat capabilities.

“We are assessing whether to get the new jets from the United States, France, Sweden or Britain. The purchase will also depend on the country’s economic recovery,” he added.

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Re: International Aerospace Discussion

Postby SaiK » 29 Oct 2009 19:14

Capsules return!~ .. Advantage Russians!

http://www.nasa.gov/mission_pages/const ... index.html

http://www.time.com/time/health/article/0,8599,1932959,00.html
The Ares, with its Orion capsule sitting atop a rocket, returns NASA to the Apollo model, which went into retirement in the 1970s having never lost a capsule crew in flight.


BTW, Ares V is supposed to take "Earth"ians to moon and beyond!~. So, NASA is back to apollo model, and bye bye the tile based reentry space shuttles.

Lets see how the orion performs in the coming years!..

Exciting news!



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Re: International Aerospace Discussion

Postby Craig Alpert » 30 Oct 2009 19:29

C-130 AND A SUPER COBRA COLLIDE OF THE COAST OF CALIFORNIA
9 people unaccounted for :(
Hope they find survivors...


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Re: International Aerospace Discussion

Postby Singha » 01 Nov 2009 20:18

I am looking for two details.

as of early 1980s when soviet union military power peaked,

[a] how many airborne divisions and brigades did red army & kgb have? were they
all equipped with the BMD vehicle? I understand a "division" in red army was
10,000 people only?

[b] how many strategic airlift in the IL76, AN22 and AN12 category did they have?

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Re: International Aerospace Discussion

Postby Craig Alpert » 03 Nov 2009 05:02

http://www.defenseindustrydaily.com/ima ... Low_lg.jpg
Boeing Secures $84M Order to Upgrade B-1B’s Avionics Software
Boeing will update the following B-1B avionics systems:

* Offensive Avionics Flight software;
* Electrical Multiplexing (EMUX) software;
* Communications/Navigation Management System (CNMS) software;
* Offensive Radar System (ORS) software;
* Central Integrated Test System (CITS) software;
* Graphics Controller (GC) software; and
* associated support equipment software (e.g. simulation, ground processing, etc).
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Re: International Aerospace Discussion

Postby Igorr » 04 Nov 2009 03:29

The Russian AAMs. Brief review, part two.

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Re: International Aerospace Discussion

Postby NRao » 04 Nov 2009 03:36

So, "close" = 40 Kmish and "Medium" = 110 Kmish.

Can we make "long" as 400 Kmish and take out A'stan as a strategic depth thought from Paki minds?

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Re: International Aerospace Discussion

Postby Craig Alpert » 04 Nov 2009 04:47

Igorr wrote:The Russian AAMs. Brief review, part two.

wow.. did any of you guys notice the striking similarity that RVV-SD shares with Astra?? in terms of fins and the design stability?? If astra can figure out how to reduce some weight, it may well benefit extending it current range of stated 40km out to 80 KM and even 110km...

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Re: International Aerospace Discussion

Postby Dmurphy » 04 Nov 2009 23:08

Sukhoi jets to fly high in Malaysia

But my fav part:
On the need to send the planes to Russia, the sources said it was not economical for the overhaul or upgrading work to be done locally.

Only India, that operates a large number of MiG-29s, has the capability to do such programmes in their own country,” the sources said, adding that the issue had actually cropped about four years ago when the Fulcrum fleet celebrated its 10th year anniversary,.

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Re: International Aerospace Discussion

Postby Baldev » 04 Nov 2009 23:20

Dmurphy wrote:Sukhoi jets to fly high in Malaysia

But my fav part:
On the need to send the planes to Russia, the sources said it was not economical for the overhaul or upgrading work to be done locally.

Only India, that operates a large number of MiG-29s, has the capability to do such programmes in their own country,” the sources said, adding that the issue had actually cropped about four years ago when the Fulcrum fleet celebrated its 10th year anniversary,.
if india can overhaul mig29 then why malaysians sent their mig29 to russia? and same for su30mkm

but ya those malaysian mig29 have IFR capability

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Re: International Aerospace Discussion

Postby Baldev » 04 Nov 2009 23:24

R79V 300 engine FOR YAK 141

Image

The turbofan engine with afterburner, with the opposite direction of rotation of rotors, with heightened gas-dynamic resistance compressors, with unique vortex burners in the main combustion chamber. For the engine developed the new turning nozzle with adjustable area nozzle throat, adjustable vectored thrust in the vertical plane on the range of 95 deg. regardless of engine regime. The engine was installed at Yak-141 on which it was established 12 world records.

Technical Data
Thrust 154 kN
Dry weight 1850 kg
Max. diameter 1,39 m
Length 4,78 m
Bypass ratio 0,81
Fuel rate 0,169 (kg/h) / N
Air mass flow 180 kg/s
Pressure ratio 22
The temperature gas before turbine 1630 K

R27V 300 FOR YAK38

Image

The twin-shaft engine, has curvilinear nozzle with two pivoting restrictions nozzles which are listed in the motion of two hydraulic motors with sprung sync. The engine is highly gas-dynamic resistant, even in extreme conditions with the level of uneven temperatures and pulsations pressure air inlet. The engine was installed at Yak-38.

for full reading
http://www.amntksoyuz.ru/en/engines/airengines/history/


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Re: International Aerospace Discussion

Postby Shameek » 05 Nov 2009 04:20

Space Junk to raise mission costs

Does this also affect ICBMs?

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Re: International Aerospace Discussion

Postby Baldev » 05 Nov 2009 09:09


negi
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Re: International Aerospace Discussion

Postby negi » 05 Nov 2009 09:13

Baldev you have any info on MICA RF's seeker (range, operating frequency) ?

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Re: International Aerospace Discussion

Postby Baldev » 05 Nov 2009 09:21

negi wrote:Baldev you have any info on MICA RF's seeker (range, operating frequency) ?

MICA uses the head of an active search Pulse-Doppler AD4A seeker of 12-18 GHz (J band)
and as far as lock on range will not and should be more than those of 9B1348E/9B1103M active seekers which is the only way to compare range

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Re: International Aerospace Discussion

Postby negi » 05 Nov 2009 09:53

Thanks Baldev this is interesting 12-18GhZ is in fact 'J' Band for NATO/US ECM frequency designations while 'Ku' Band as per IEEE std.
Btw may I ask where did you get those numbers from ? (I know Keypublishing and Army Tech page have references to 'J' Band but I did not get any such info from OEM page.)

It is said that (as per Keypub and other blogs) Meteor uses improved AD4A in 'Ku' Band (there is no Ku band under NATO designation ) and here let me point to Rakall's picture for Astra's brochure Astra

I guess there is still plenty of mystery around origins of Astra's seeker (we cannot conclude that Astra uses 9B-1103M (diameter 150 mm) seeker).


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