F-15B Eagle NASA ACTIVE Historical It was the first production

It was the first production aircraft with variable swing wings that could be swept back or brought forward to increase efficiency

considering the original market forecast was for 250 airplanes

It is credited with 25 Mig kills

The result was the MD-11 tri-jet of 1985

The Ju 52 was obsolete as a bomber by 1939

F-15B Eagle NASA ACTIVE Historical It was the first productionF 15B ACTIVE NASA airplane model. The F 15 ACTIVE research aircraft, the first two seat F 15 built by McDonnell Douglas, was used initially for developmental testing and evaluation. In the mid 1980's, the aircraft was extensively modified for the Air Force's Short Takeoff and Landing Maneuvering Technology Demonstrator (S MTD) program. Those modifications included equipping the aircraft with a digital fly by wire control system, canards (modified F 18