International Aerospace Discussion
Re: International Aerospace Discussion
General Dynamics delivers first wideband radome to Boeing for F-15 Radar Modernization Program
Benefits of the radome include superior electrical performance over a wide frequency range, low weight, low part count, and the ability to perform in high heat and stress environment. The radome also includes the installation and integration of an instrument landing system antenna.
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Re: International Aerospace Discussion
Boeing Built Orbital Test Vehicle X-37 B begins First Flight
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The X-37B has the potential to bring to space the flexibility that unmanned systems provide warfighters and combatant commanders today," said Dennis Muilenburg, president and CEO of Boeing Defense, Space & Security. "With the ability to be launched into space and then land on its own, the X-37B Orbital Test Vehicle is an example of the kind of innovation that Boeing has been doing for decades to advance aviation, space systems, and now unmanned systems. Close teamwork between the Air Force Rapid Capabilities Office, the United Launch Alliance Atlas team, and the 45th Space Wing at Cape Canaveral Air Force Station made this launch a success."
The vehicle will be used to demonstrate a reliable, reusable unmanned space test platform for the Air Force. Program objectives include space experimentation, risk reduction, and concept-of-operations development for reusable space vehicle technologies.
"The Orbital Test Vehicle combines the best of aircraft and spacecraft to enable flexible and responsive missions," said Paul Rusnock, Boeing vice president of Experimental Systems and program director for the X-37B. "This first flight will demonstrate the readiness of the X-37B to begin serving the Air Force as it continues to investigate ways to make space access more routine, affordable and responsive."
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Re: International Aerospace Discussion
A cruise missile in a shipping box on sale to rogue bidders
Defence experts are warning of a new danger of ballistic weapons proliferation after a Russian company started marketing a cruise missile that can be launched from a shipping container.
Re: International Aerospace Discussion
Huge NASA Science Balloon Crashes in Australian Outback
http://news.yahoo.com/s/space/20100429/ ... ianoutback
A huge NASA balloon loaded with a telescope painstakingly built to scan the sky at wavelengths invisible to the human eye crashed in the Australian outback Thursday, destroying the astronomy experiment and just missing nearby onlookers, according to Australian media reports.
http://news.yahoo.com/s/space/20100429/ ... ianoutback
A huge NASA balloon loaded with a telescope painstakingly built to scan the sky at wavelengths invisible to the human eye crashed in the Australian outback Thursday, destroying the astronomy experiment and just missing nearby onlookers, according to Australian media reports.
Re: International Aerospace Discussion
http://news.discovery.com/videos/space- ... e-lro.html
Before NASA's Lunar Reconnaissance Orbiter heads to the moon in February, Discovery Channel's Dave Mosher learns more about the instruments that will scout the lunar surface. Jorge Ribas produces.
Did this go with Chandrayaan
http://news.discovery.com/space/lost-an ... rover.html
LOST AND FOUND: SOVIET LUNAR ROVER
Before NASA's Lunar Reconnaissance Orbiter heads to the moon in February, Discovery Channel's Dave Mosher learns more about the instruments that will scout the lunar surface. Jorge Ribas produces.
Did this go with Chandrayaan
http://news.discovery.com/space/lost-an ... rover.html
LOST AND FOUND: SOVIET LUNAR ROVER
In November 1970, a Soviet probe landed on the surface of the moon and released two ramps. A rover, named Lunokhod 1, descended to the surface to take pictures and conduct experiments. It carried with it a French-made light reflector, which could be used by scientists on Earth to compute distances and better understand lunar geology.
Ten months later, Lunokhod 1 fell silent, its location on the moon unknown. Over the years, scientists occasionally beamed a laser around its last known coordinates, hoping for a return beam from the reflector. They got no response and figured the rover had fallen into a crater or parked itself beneath a cliff, blocking its reflector from Earth.
WATCH VIDEO: What is the Lunar Reconnaissance Orbiter (LRO) and what is it doing? Discovery News visited the LRO before it was launched.
But their luck changed last weekend when, armed with high-resolution pictures from NASA’s Lunar Reconnaissance Orbiter, scientists zeroed in on the rover.
“It turns out that our previous best-guess position was miles off,” says Tom Murphy, with the University of California, San Diego. Using a 3.5 meter telescope at the Apache Point Observatory in New Mexico, Murphy and his team sent pulses of laser light toward the newly found rover and found the retroreflector in excellent condition.
“We found it to be surprisingly bright -- at least five times brighter than the other Soviet reflector, on the Lunokhod 2 rover, to which we routinely send laser pulses,” Murphy said in a press release about the discovery.
The distance between Lunokhod 1’s reflector and Earth was calculated to within one centimeter (0.4 inches.) A second measurement 30 minutes later allowed scientists to triangulate the reflector’s position on the moon to within 10 meters (32.8 feet). Additional refinements are expected in the coming months.
WATCH VIDEO: In an effort to see what the moon is made of, NASA smashed a probe into its surface in 2009, but what did we find out?
Scientists are eager to fold Lunokhod 1’s positioning data into an already existing network. In addition to the Soviet reflectors, NASA astronauts placed laser retro-reflectors on the lunar surface during the 1969-1972 Apollo missions to the moon. The information is used to glean insight about the moon’s core and gravity field. Scientists also expect to use the data to learn more about the lunar dust, which seems to be dimming the returning laser light more expected.
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Re: International Aerospace Discussion
Space Adventures to Sell Cheaper Space Tourism Flights Thru Armadillo Aerospace:
http://www.msnbc.msn.com/id/36881724/ns ... nce-space/
http://www.msnbc.msn.com/id/36881724/ns ... nce-space/
Re: International Aerospace Discussion
Water is a helluva bad place to screw up a landing, as anyone who's belly-flopped off a diving board will tell you. A structurally sound water-resistant hull will incur a greater weight penalty than regular landing gear. Water is also not an even surface for an horizontal takeoff or landing - especially not in the ocean.
Re: International Aerospace Discussion
The United States Air Force seeks a reusable flyback booster:
http://www.flightglobal.com/articles/20 ... cepts.html
It looks a lot like India's proposed AVATAR TSTO design:

This seems like a lot more sensible successor to launch systems like the Space Shuttle for the US, since it's more likely to live upto the goals of a truly reusable and flexible launch system.
http://www.flightglobal.com/articles/20 ... cepts.html
It looks a lot like India's proposed AVATAR TSTO design:
This seems like a lot more sensible successor to launch systems like the Space Shuttle for the US, since it's more likely to live upto the goals of a truly reusable and flexible launch system.
Re: International Aerospace Discussion
Boeing displays concepts for F/A-18E/F replacement

Boeing has started publicly marketing two concepts for a stealthy, tailless, supercruising strike fighter to replace its F/A-18E/F Super Hornet after 2025. Both twin-engine concepts, which feature optionally-piloted cockpits, resemble a modern-day replacement for the ill-fated A-12 Avenger. The carrier-based stealth bomber project was cancelled in 1991 amid cost overruns and technical problems.
But the provisionally 9g-rated airframes also reflect the air-to-air performance once provided by the Grumman F-14, which the Super Hornet finally replaced in 2006, says Dave Thieman, a programme development official in Boeing's advanced global strike systems division. Talk of replacing the F/A-18E/F, which entered service from 1999, may seem premature, but the earliest stages of the navy's acquisition process have already started, Thieman says."They're going to need [replacement] vehicles beyond 2025," he says.
Boeing officials have focused on the navy's thinking for a Super Hornet replacement that remains at least 15 years away. The company understands that its potential customer wants a replacement with more engine power to supercruise, with the low observable aircraft to carry internal weapons, distributed sensors and have extreme agility. "It's a [Lockheed] F-22 on the carrier," Thieman says.
Meanwhile, the US Air Force has launched an early study called a capabilities based analysis for an F-22 replacement. Like the Super Hornet, the fighter remains in active production, but the air force expects a replacement will be required after 2025.
If funding for a replacement programme can be found, there is likely to be pressure to launch a joint technology demonstration, where the air force and navy would co-operate on a next-generation air dominance fighter. In that situation, the air force may require a bigger airframe than a carrier-based fighter to accomplish its mission, Thieman says. However, the two projects could share common engines, systems and weapons, he believes.
Re: International Aerospace Discussion
I hope our AMCA be something like this.
Re: International Aerospace Discussion
Is there any update on RLV-TD or HEX???? the last experiment was the sounding rocket with passive scramjet engine.
Re: International Aerospace Discussion
Our AMCA is already exactly like this. A glint in the eye..srs wrote:I hope our AMCA be something like this.
Re: International Aerospace Discussion
Is there any link of the AMCA design?
Re: International Aerospace Discussion
Images: China unveils J-10 fighter
The Chinese will not be too pleased to hear that word
The first Chinese-made fighter features both Russian and Israeli technology, including a Russian-made AL-31F power plant. Assistant Air Force Attaché Alexander Korenev from the Russian Embassy in Beijing said that Russia has long regarded J-10-type fighters as obsolete but noted the high professionalism of Chinese pilots and their stunt flying.
The Chinese will not be too pleased to hear that word

Re: International Aerospace Discussion
what is the deployment status of the WS-10 ?
in one slide the cost of a fighter is mentioned as $27.9 mil by the squadron commander. could be its low for chinese purchasers due to x-subsidy on stuff like support package, radar, missiles and such..most of which already exist in any
receiving squadron. for a foreign buyer could be double the cost per unit. which is why the Pakis are instead trying for number of FREE F-solahs.
I wonder why they kept referring in slides as "3rd gen fighter" . doesnt having a canard-delta, a good engine, good T:W, digital FBW qualify it is a "4th gen" ?
wiki is more correct imo:
http://en.wikipedia.org/wiki/Fourth_gen ... et_fighter
in one slide the cost of a fighter is mentioned as $27.9 mil by the squadron commander. could be its low for chinese purchasers due to x-subsidy on stuff like support package, radar, missiles and such..most of which already exist in any
receiving squadron. for a foreign buyer could be double the cost per unit. which is why the Pakis are instead trying for number of FREE F-solahs.
I wonder why they kept referring in slides as "3rd gen fighter" . doesnt having a canard-delta, a good engine, good T:W, digital FBW qualify it is a "4th gen" ?
wiki is more correct imo:
http://en.wikipedia.org/wiki/Fourth_gen ... et_fighter
Re: International Aerospace Discussion
Chinese use a different nomenclature for thr a/c. a chinese 3r is equivalent to western 4. We can also say LCA is 2+ (after marut) for indian generation fighters. 

Re: International Aerospace Discussion
GE/Rolls Royce team bets on fixed prices to keep F-35 second engine alive by cutting costs
GE/Rolls does not agree with the CAPE analysis, estimating it will take $1.8 billion to complete F136 development and tool up for production, says FET Chairman Jean Lydon-Rodgers. Fixed prices shift to industry the risk that manufacturing costs will not come down the learning curve as fast as planned, she says.
Making its fifth consecutive attempt to cancel the second engine, the Pentagon is not impressed with the new offer. “The [Defense] secretary does not believe the JSF needs an extra engine. Period,” says Geoff Morrell, Pentagon press secretary. “We simply can’t afford to buy two of everything.”
Re: International Aerospace Discussion
Would it be possible for a foreign country to fund the F136 by GE/RR if the Pentagon decides to shelve it ?? If so, even $2 billion for a state of the art engine is really not that bad of a proposition, if it can be manufactured in the donor country at a discount to its US price. The Euros and especially the British would definitely be interested in an alternative engine while the Japanese and the Koreans are studying their own 5th gen aircraft proposals.GE/Rolls Royce team bets on fixed prices to keep F-35 second engine alive by cutting costs
GE/Rolls does not agree with the CAPE analysis, estimating it will take $1.8 billion to complete F136 development and tool up for production, says FET Chairman Jean Lydon-Rodgers. Fixed prices shift to industry the risk that manufacturing costs will not come down the learning curve as fast as planned, she says.
Making its fifth consecutive attempt to cancel the second engine, the Pentagon is not impressed with the new offer. “The [Defense] secretary does not believe the JSF needs an extra engine. Period,” says Geoff Morrell, Pentagon press secretary. “We simply can’t afford to buy two of everything.”
Re: International Aerospace Discussion
Certification tests of the Ka-226
Re: International Aerospace Discussion
Eurofighter Consortium offers Romania 24 used Tranche 1 Eurofighters for $1.3 billion including training, logistics and nearly 100% offsets..
Romanians would be fools (or else someone has made a fancy deal on the side for themselves) to go with 24 heavily used F-16 Block 25s for the same price as 24 lightly used Tranche 1 Typhoons or 24 brand new Gripen C/Ds..
link
Romanians would be fools (or else someone has made a fancy deal on the side for themselves) to go with 24 heavily used F-16 Block 25s for the same price as 24 lightly used Tranche 1 Typhoons or 24 brand new Gripen C/Ds..
link
Eurofighter: Jobs For Romania If F-16 Buy Cancelled
By TOM KINGTON
Published: 13 May 2010 13:40
ROME - The Eurofighter consortium has told Romanian lawmakers that up to 5,000 skilled jobs could be created in Romania if they scrap plans to buy F-16 fighter jets and acquire the Eurofighter Typhoon instead.
The proposal was made May 11 in Bucharest by Maurizio De Mitri, a senior vice president at Alenia Aeronautica, the unit of Italy's Finmeccanica group that is a member of the consortium.
De Mitri outlined plans to sell Romania 24 Tranche 1 Typhoons, which are now flying in Italy following their delivery to the Italian Air Force between the end of 2003 and 2008. The price, including logistical support and training, would be 1 billion euros ($1.3 billion), he said.
That matches the price tag for 24 used Lockheed Martin F-16s, which Romania's Supreme Defense Council opted to acquire in March.
But the council's decision to buy F-16s requires Romanian parliamentary approval, and on May 11, the Senate Defense Commission called in representatives of rivals Eurofighter and Sweden's Saab, which builds the Gripen fighter, after stating it wished to hear from Lockheed's competitors.
Swedish officials previously said in April they could sell Romania 24 new Gripen aircraft for $1.3 billion, the same price as the 24 second-hand F-16s, in a deal including training, logistics support, 100 percent offset and easy payment terms.
On May 11, the Eurofighter consortium outlined its deal to the lawmakers, with Alenia executive De Mitri claiming that the 100 percent offset deal, as well as technology transfer and local industrial participation, could generate 5,000 jobs locally.
"Romanian industry could be involved in a logistical support program similar to that seen in other Eurofighter partner nations, which is leading to record performances for the aircraft," a Eurofighter spokesman said.
"Our price also includes logistical support and training, and we are also offering long-term repayment," he added.
The Italian Eurofighters could be delivered between the end of 2011 and the end of 2012, he said.
A spokeswoman at Alenia Aeronautica, which has led the Eurofighter campaign, said the Italian aircraft offered had flown less than 10 percent of their expected lifetime flying hours. A formal offer of the aircraft would be made by the end of this month, she added.
Re: International Aerospace Discussion
An interesting F-22 upgrade schedule. Sorry, if repost.
[quote]F-22A Future Capabilities & Modifications The F-22A Raptor is the Air Force’s primary air superiority fighter, providing unmatched capabilities for air supremacy, homeland defense and cruise missile defense for the Joint team. The multi-role F-22A’s combination of speed, stealth, maneuverability and integrated avionics gives this remarkable aircraft the ability to gain access to, and survive in, high threat environments. Its ability to find, fix, track, and target enemy air- and surface-based threats ensures air dominance and freedom of maneuver for all Joint forces. Similar to every other aircraft in the U.S. inventory, there is a plan to regularly incorporate upgrades into the F-22A to ensure the Raptor remains the world's most dominant fighter in the decades to come. The F-22A modernization program consists of two major efforts that, together, will ensure every Raptor maintains its maximum combat capability: the Common Configuration program and a pre-planned product improvement (P3I) program (Increments 2 and 3). We are currently in year six of the planned 13-year program.
As of 1 May 2009, the Air Force has accepted 139 F-22A aircraft, out of a programmed delivery of 183. Most of these aircraft include the Increment 2 upgrade, which provides the ability to employ Joint Direct Attack Munitions (JDAM) at supersonic speeds and enhances the intra-flight data-link (IFDL) to provide connectivity with other F-22As. The Air Force will upgrade the F-22A fleet under the JROC-approved Increment 3 upgrade designed to enhance both air-to-air and precision ground attack capability. Raptors from the production line today are wired to accept Increment 3.1, which when equipped, upgrades the APG-77 AESA radar to enable synthetic aperture radar ground mapping capability, provides the ability to self-target JDAMs using on-board sensors, and allows F-22As to carry and employ eight Small Diameter Bombs (SDB). The Air Force will begin to field Increment 3.1 in FY11. Future F-22As will include the Increment 3.2 upgrade, which features the next generation data-link, improved SDB employment capability, improved targeting using multi-ship geo-location, automatic ground collision avoidance system (Auto GCAS) and the capability to employ our enhanced air-to-air weapons (AIM-120D and AIM-9X). Increment 3.2 should begin to field in FY15. The current F-22A modernization plan will result in 34 Block 20 aircraft used for test and training, 63 combat-coded Block 30s fielded with Increment 3.1, 83 combat-coded Block 35s fielded with Increment 3.2, and 3 Edwards AFB-test coded aircraft. Consideration is also being given to upgrade the 63 Block 30s to the most capable Block 35 configuration.[/quote]
- It means till 2011 the raptors have no SAR mode, the AIM-120D\AIM-9X are not before 2015.
[quote]F-22A Future Capabilities & Modifications The F-22A Raptor is the Air Force’s primary air superiority fighter, providing unmatched capabilities for air supremacy, homeland defense and cruise missile defense for the Joint team. The multi-role F-22A’s combination of speed, stealth, maneuverability and integrated avionics gives this remarkable aircraft the ability to gain access to, and survive in, high threat environments. Its ability to find, fix, track, and target enemy air- and surface-based threats ensures air dominance and freedom of maneuver for all Joint forces. Similar to every other aircraft in the U.S. inventory, there is a plan to regularly incorporate upgrades into the F-22A to ensure the Raptor remains the world's most dominant fighter in the decades to come. The F-22A modernization program consists of two major efforts that, together, will ensure every Raptor maintains its maximum combat capability: the Common Configuration program and a pre-planned product improvement (P3I) program (Increments 2 and 3). We are currently in year six of the planned 13-year program.
As of 1 May 2009, the Air Force has accepted 139 F-22A aircraft, out of a programmed delivery of 183. Most of these aircraft include the Increment 2 upgrade, which provides the ability to employ Joint Direct Attack Munitions (JDAM) at supersonic speeds and enhances the intra-flight data-link (IFDL) to provide connectivity with other F-22As. The Air Force will upgrade the F-22A fleet under the JROC-approved Increment 3 upgrade designed to enhance both air-to-air and precision ground attack capability. Raptors from the production line today are wired to accept Increment 3.1, which when equipped, upgrades the APG-77 AESA radar to enable synthetic aperture radar ground mapping capability, provides the ability to self-target JDAMs using on-board sensors, and allows F-22As to carry and employ eight Small Diameter Bombs (SDB). The Air Force will begin to field Increment 3.1 in FY11. Future F-22As will include the Increment 3.2 upgrade, which features the next generation data-link, improved SDB employment capability, improved targeting using multi-ship geo-location, automatic ground collision avoidance system (Auto GCAS) and the capability to employ our enhanced air-to-air weapons (AIM-120D and AIM-9X). Increment 3.2 should begin to field in FY15. The current F-22A modernization plan will result in 34 Block 20 aircraft used for test and training, 63 combat-coded Block 30s fielded with Increment 3.1, 83 combat-coded Block 35s fielded with Increment 3.2, and 3 Edwards AFB-test coded aircraft. Consideration is also being given to upgrade the 63 Block 30s to the most capable Block 35 configuration.[/quote]
- It means till 2011 the raptors have no SAR mode, the AIM-120D\AIM-9X are not before 2015.
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Re: International Aerospace Discussion
Busy Schedule for Rocket Obama Wants Scrapped
http://www.nytimes.com/2010/05/17/scien ... ocket.html
http://www.nytimes.com/2010/05/17/scien ... ocket.html
Re: International Aerospace Discussion
Fiber mat stealth for F-35
Any idea what this material may consist of?FORT WORTH — As the debate rages about Joint Strike Fighter life-cycle cost, Lockheed Martin officials are raising a previously unheard point to bolster their low-price claims — a new low-observability (LO) substance called fiber mat.
Lockheed officials avoided the need to use stealthy appliqués and coatings by curing the substance into the composite skin of the aircraft, according to Tom Burbage, executive vice president of F-35 program integration for the company. It “makes this airplane extremely rugged. You literally have to damage the airplane to reduce the signature,” he said in an interview with AVIATION WEEK. This top-fiber mat surface takes the place of metallic paint that was used on earlier stealthy aircraft designs.
The composite skin of the F-35 actually contains this layer of fiber mat, and it can help carry structural loads in the aircraft, Burbage adds.
Re: International Aerospace Discussion
Mi-8MTV helicopter with TV3-117VMA-CBM1V engines sets climb record
“The helicopter climbed to 8.1 kilometers within 13 minutes, and the engine ran at the maximum capacity of 2,000 horsepower for 30 minutes,” the report said.
Earlier test flights of the Mil Mi-24 with the TV3-117VMA-CBM1V engine hit a record speed of ascent; the helicopter reached an altitude of five kilometers within nine minutes or half of the usual time.
“Bench tests of the TV3-117VMA-CBM1V engine ended successfully in 2009, and the Ukrainian Defense Ministry put the engine into service. It is now part of the modernization of military cargo helicopters, whose engines will be replaced with the TV3-117VMA-CBM1V. The switch from the TV3-117V engine to the TV3-117VMA-CBM1V engine will extend the engine service life,” the report said.
Re: International Aerospace Discussion
Here is a link for "Bonanza and fly by wire"Like I said, for "google bonanaza + fly by wire" has a control surface that flaps at 20 hz, get me his name and show me a video of it flapping at that rate and I will build a shrine for him and elevate him from being a mere mortal to a saint/immortal in aerospace engg.
Interestingly it says that the control inputs from FBW are less frequent than those from the pilot because they are more precise. So much for 20 Hz or even 12.5 ms 80 Hz

http://docs.google.com/viewer?a=v&q=cac ... fnVxtI-ldg
Also notably from the same source:Control Input Frequency
One could predict from an analysis of the required control motions that the FLC should produce at least a 2:1 reduction in the frequency of observed control movements. That is, to enter and hold a given bank angle, the yoke requires at least two deflections (one to initiate and one to neutralize the aileron at the desired bank angle), whereas the FLC requires a single deflection to the position corresponding to the bank angle (turn rate)
That should just about rule it out for all jingos.The gains seen from a PCS come at the expense of being unable to perform such maneuvers as barrel rolls and loops (requiring direct authority over control surfaces), which is not usuall a problem in everyday GA flying.
Last edited by shiv on 22 May 2010 09:54, edited 1 time in total.
Re: International Aerospace Discussion
a normal helicopter turns on a dime by slowing or speeding up the tail rotor.
can these Kamovs make such a turn ? do they have means to slow down one rotor relative to another to let the
torque difference turn the craft?
such an ability is useful in confined spaces or operating very close to cliffs as these birds will do...
can these Kamovs make such a turn ? do they have means to slow down one rotor relative to another to let the
torque difference turn the craft?
such an ability is useful in confined spaces or operating very close to cliffs as these birds will do...
Re: International Aerospace Discussion
What a shame, considering that India and Russia have such a strong military industrial relationship. The An-124 could easily have been co-produced with India servicing the military needs of the Indian Airforce as well as making a nice profit with the huge demand in the very heavy lift transport category amongst civilian operators servicing the US military and NATO forces in Iraq and Afghanistan!
The Americans will most likely build these planes and sell them at a nice profit while the Russians get a nice paycheck for the IP and some minor design work.
Re: International Aerospace Discussion
smart move by the US. they get a sturdy and proven airframe and can clip in a new glass cockpit, few navigation and self-defence systems and its good to go.
if a greenfield project to build a C-5 replacement were given to Boeing it would consume 10 years and surely $200b which US can ill afford at this point in its life cycle. ultimately it would be too costly and complex to afford in large quantity as mission creep seeps in.
americans have lost the art of designing things to a basic set of requirements and modest cost. even a paper clip has 110 features and costs $1b to build.
its has rfid for tracking, coated with titanium to last 1000 years, made from a single block of steel using precision milling and cutting tools borrowed from
the SSN program, has a LED that lights up when commanded from a iphone app for easy finding in a dark room, supports wolfpack datalinks with fellow paper
clips, has a passive datalink to get precision cues from a gphone camera to hit the spot with 0.0001mm precision....it never ends.
decades of free corn and sweet water at the feeding trough completely eradicated that economical mentality both from defence contractors and the lay public
if a greenfield project to build a C-5 replacement were given to Boeing it would consume 10 years and surely $200b which US can ill afford at this point in its life cycle. ultimately it would be too costly and complex to afford in large quantity as mission creep seeps in.
americans have lost the art of designing things to a basic set of requirements and modest cost. even a paper clip has 110 features and costs $1b to build.
its has rfid for tracking, coated with titanium to last 1000 years, made from a single block of steel using precision milling and cutting tools borrowed from
the SSN program, has a LED that lights up when commanded from a iphone app for easy finding in a dark room, supports wolfpack datalinks with fellow paper
clips, has a passive datalink to get precision cues from a gphone camera to hit the spot with 0.0001mm precision....it never ends.
decades of free corn and sweet water at the feeding trough completely eradicated that economical mentality both from defence contractors and the lay public

Last edited by Singha on 22 May 2010 11:58, edited 1 time in total.
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Re: International Aerospace Discussion
Okay, but turning the main fuselage is hardly required as far as movement is concerned. All you have to do is control the Cyclic on the main rotor and the motion can be made in any direction. The problem of course comes in when turning the fuselage on a dime has to do with aiming the on-board weapons. Regardless, Contra-rotating main rotors do not pose much of an issue on this regard.Singha wrote:a normal helicopter turns on a dime by slowing or speeding up the tail rotor.
can these Kamovs make such a turn ? do they have means to slow down one rotor relative to another to let the
torque difference turn the craft?
such an ability is useful in confined spaces or operating very close to cliffs as these birds will do...
-Vivek Ahuja
Re: International Aerospace Discussion
I have seen footage of a huge EH101 flying at treetop level make a amazing 180' skid turn and come to a hover momemtarily before going fwd again.
definitely a brown pants job if given to a rookie pilot.
definitely a brown pants job if given to a rookie pilot.
Re: International Aerospace Discussion
I don't think they employ variable rotor speeds for yaw control on co-axial rotors.Singha wrote:a normal helicopter turns on a dime by slowing or speeding up the tail rotor.
can these Kamovs make such a turn ? do they have means to slow down one rotor relative to another to let the
torque difference turn the craft?
such an ability is useful in confined spaces or operating very close to cliffs as these birds will do...
Rotational maneuvering is performed not by increasing or decreasing the rotor speeds (this would lead to a loss an excessive loss in downward thrust and would be very slow) but rather by increasing the blade pitch of one particular rotor while decreasing the blade pitch of another. The speed of the rotors remains the same while the dissimilar pitches of the rotors causes a dissymmetry in the torque one way or the other.
Re: International Aerospace Discussion
there is some news about a secret launch by the USA of a space craft
the x37b can stay in space for upto 270 days!
http://www.timesonline.co.uk/tol/news/w ... 106714.ece
the alrticle also carries a reference to a weapon called Prompt Global Strike
With all the focus on the launch of the secret X37B, another space launch by a Minotaur IV rocket from Vandenberg Air Force base in California received less attention.
It was carrying the prototype of a new weapon that can hit any target around the world in less than an hour.
the x37b can stay in space for upto 270 days!
http://www.timesonline.co.uk/tol/news/w ... 106714.ece
the alrticle also carries a reference to a weapon called Prompt Global Strike
With all the focus on the launch of the secret X37B, another space launch by a Minotaur IV rocket from Vandenberg Air Force base in California received less attention.
It was carrying the prototype of a new weapon that can hit any target around the world in less than an hour.