" recession -vll", 1943, air, air force, aircraft, all-weather, ammunition, any, arms, art, aviation, being developed, bomber, clouds, complex, design bureau, developed by, developer, division, dogfight, dry, engine, f-22, f16, fight., fighter, fighter - biplane, fighter biplane, fighters, fire, flight, fokker d.vii, france, freeboard, french, from, front, fulcrum, future, generation, german, height, high-precision, highly mobile, instant, interceptor, land, lightweight, lung, mig- 29, mig- 31, mig-29, mikoyan and gurevich, mikoyan and gurevich mig-31 fighter, military, multi-purpose, multi-role fighter, oak, october 221918, of 50, of the day, of the fifth, one, pak-fa, performs, perspective, picture, plane, purpose, replacement, rockets, russia, russia ., russian air force, single, single-engined, sky, soviet, su- 34, su-27, technology, the world, time, under development, very, vf-1a valkyrie jet fighter, was, western front, wings, ww2, yak- 3