F-35 stolen tech and ideas from Russian Yak-41

[AZADPAKISTAN2009]

Cooperation with Lockheed
Following the announcement by the CIS on September 1991 that it could no longer fund development of the Yak-41M, Yakovlev entered into discussions with several foreign partners who could help fund the program. Lockheed Corporation, which was in the process of developing the X-35 for the US Joint Strike Fighter program, stepped forward, and with their assistance 48-2 was displayed at the Farnborough Airshow in September 1992. Yakovlev announced that they had reached an agreement with Lockheed for funds of $385 to $400 million for three new prototypes and an additional static test aircraft to test improvements in design and avionics. Planned modifications for the proposed Yak-41M included an increase in STOL weight to 21,500 kg (47,400 lb). One of the prototypes would have been a dual-control trainer. Though no longer flyable, both 48-2 and 48-3 were exhibited at the 1993 Moscow airshow. The partnership began in late 1991, though it was not publicly revealed by Yakovlev until 6 September 1992, and was not revealed by Lockheed until June 1994

Now same tech is sold 150 Million a plane , Russia should ask for Technology stealing $$$$
for intellectual property

 

[AZADPAKISTAN2009]

1989!!!

 

[AbRaj]

1989!!!

It's called buying, obviously you don't know

 

[ultron]

Yak-41 looks way better than F-35.

 

[jammersat]

looks like a VTOL mig-23

 

[jhungary]

View attachment 303508


Cooperation with Lockheed
Following the announcement by the CIS on September 1991 that it could no longer fund development of the Yak-41M, Yakovlev entered into discussions with several foreign partners who could help fund the program. Lockheed Corporation, which was in the process of developing the X-35 for the US Joint Strike Fighter program, stepped forward, and with their assistance 48-2 was displayed at the Farnborough Airshow in September 1992. Yakovlev announced that they had reached an agreement with Lockheed for funds of $385 to $400 million for three new prototypes and an additional static test aircraft to test improvements in design and avionics. Planned modifications for the proposed Yak-41M included an increase in STOL weight to 21,500 kg (47,400 lb). One of the prototypes would have been a dual-control trainer. Though no longer flyable, both 48-2 and 48-3 were exhibited at the 1993 Moscow airshow. The partnership began in late 1991, though it was not publicly revealed by Yakovlev until 6 September 1992, and was not revealed by Lockheed until June 1994

Now same tech is sold 150 Million a plane , Russia should ask for Technology stealing $$$$
for intellectual property

Actually, Yak-141 and F-35B uses different VTOL technology.

YAK-141 uses the same Lift Jet technology inherit from YAK-38 fighters. US bought the lift jet technology from Yak in the 1990s to put it on next generation AV-8B Harrier due to the inability of AV-8B sub-sonic capability. Eventually, the project was cancelled and the lift fan technology YAK developed was not used. But was then developed to the Lift Fan technology which was used by F-35B

The different between Lift Jet and Lift Fan is quite simple, but the implication is quite big. With Lift Jet, you will need aux engine to counter balance the Jet nozzle being tilted for VTOL, kind of like a space shuttle have smaller boost engine on the side to adjust the craft in space. While Lift Fan technology was used by F-35B offer a central lift fan to couple with the Engine Nozzle, which eliminate the need of booster engine by using the main engine to act as a counter balance of the draft.

While the YAK-141 work as a traditional VTOL fighter, which basically using the centreline engine to lift and hover, with aux nozzle act as a movement propulsion, F-35B uses a fan to lift and hover, while using the main engine to tilt and movement while hovering.

The impact would be YAK-141 would have offer a limited supported Vertical movement (Limted by the aux nozzle) while the F-35B would enjoy the full movement of the engine, also, since your main engine have to be maintain in full tilt to support the aircraft, it burn much more fuel while stationary than F-35, which can idle the engine (which only used to power the Lift Fan) and can declutch the lift fan once in jet mode. Which again safe fuel.

I would not say Yak-141 is in any way, shape or form related to F-35B.

Suggested Reading

http://breakingdefense.com/2011/10/rolls-unveils-new-f-35b-lift-fan-factory/

http://naca.central.cranfield.ac.uk/reports/arc/rm/3336.pdf

P.S. My brother is a certified Rolls Royce Engine Engineer working with Boeing...

 

[AZADPAKISTAN2009]

To my naked eyes the "Pipe" at back turns like it does in F35 , all US did was wrapped around a wrapper body of stealth plane around the same inner design

Now selling it for 100 Million per plane not a bad deal for Lockhead

Also the central portion for lift from ground also has same idea the upper hood opens up while the fan stabalizes the central part of the plane

Surprised Russians never capitalized on this design with a follow up

 

[jhungary]

To my naked eyes the "Pipe" at back turns like it does in F35 , all US did was wrapped around a wrapper body of stealth plane around the same inner design

Now selling it for 100 Million per plane not a bad deal for Lockhead

Also the central portion for lift from ground also has same idea the upper hood opens up while the fan stabalizes the central part of the plane

Surprised Russians never capitalized on this design with a follow up

Again, the 2 design is very much different, they aren't the same. The reason why the Russian Lift Jet design cannot sell because they are actually quite bad......

 

[jammersat]

the VTOL f-35 will be delivered only to the united states marine corps , and not israel or turkey for that matter