The F-15 STOL/MTD, and later the F-15 ACTIVE, were among the most unusual Eagle variants ever built. Experimental platforms, operated by NASA and the USAF, these specialized F-15s were used to test thrust vectoring, ultra-short takeoffs, and future fighter maneuverability concepts at a time when Soviet fears motivated technological expansion.
F-15 STOL/MTD: Origins of the Program During the Cold War, the US and its allies were concerned about th…