I did. considering US did not have many "black"projects after 19

when F22 was there. The speed is too slow. Without good engine, it is waste of time to talk about speeding up on air craft such as F-20.

   

所有跟帖： 

• Engine is always the bottleneck in the Chinese -Giantfan- ♂ (1284 bytes) () 11/07/2011 postreply 11:37:38

• Thanks but actually Rome was built in just a day. -Northstar_V8- ♂ (0 bytes) () 11/07/2011 postreply 12:24:55

• the core technology can never be copied and has to be developed -Northstar_V8- ♂ (200 bytes) () 11/07/2011 postreply 12:28:23