Like grand-grandpa and grand-grandson...

[Svetlin]

1949 - Su-15 (first fighter with that designation, not to be confused with the serial Su-15 from 1963)

2000 - X-32

If we ignored that fact that the Su-15 was designed and first flew in the Soviet Union in 1949, while the X-32 was designed and first flew in the USA in 2000, these look to me just like grand-grandpa and grand-grandson 

[bazillius]

ahhh .... well, everything is clear. The Americans stole secret technologies of the 50s from Russia and were able to implement them only in 2000.

[bazillius]

Joseph foxing cross! Thats, damp, realy ugly !

https://en.wikipedia.org/wiki/Sukhoi_Su-15_(1949)

[+Menrva]

19 hours ago, bazillius said:

ahhh .... well, everything is clear. The Americans stole secret technologies of the 50s from Russia and were able to implement them only in 2000.

You joke but it's also real:

At 44:30 he mentions a Pilot Activated Automatic Recovery System. It was implemented starting in 1994 on the Nighthawk, but the Soviets had a similar system since the 1950s.

Not to mention that the theory behind stealth aircraft was conceived by Pyotr Yakovlevich Ufimtsev, Soviet physicist and mathematician.

Edited March 8, 2023 by Menrva

[+Gepard]

Technology "transfer" was not a one way road. If you look from above to a F-111, a Mirage G-8 or a MiG-23 you find astonishing similarities. Same with MiG-25 and F-15. Or if you take the MiG Ye-8, which basic design idea was used for the F-16A.  Or the Leopard 1 tank which has a lot of features of the T-34/85 design.

The most important design "transfer" from west to east was the F-5E, which was captured in 1975 by the Nort Vietnamese. Twin engine design, strake wings, comfortable cockpit, good view, wing design etc of the F-5E you find in the MiG-29.

[UllyB]

Well they look, to me, as a grand-grandson and grand-grandpa but only if grandpa was a Klingon and grandma a Romulan, with a little bit a native indian blood.