Built for a CIA program code-named "Tagboard," it carried an unpiloted D-21 drone for intelligence gathering. These drones were intended for launch from the M-21 "mothership" for flights over …

Two of the original 18 A-12 aircraft were designated as M-21s with serial numbers 60-6940 and 60-6941. The M-21 was a two-seat version of the A-12, with a pylon on the fuselage centerline …

3 天之前 · The M-21 is an A-12-like aircraft designed to launch the once ultra-secret D-21 Drone. When the United States signed a treaty to end flights of manned vehicles over the Soviet …

History and Development of the SR-71 Blackbird and M-21 Blackbird . Lockheed SR-71 Blackbird in flight. The Lockheed SR-71 "Blackbird"was an advanced, long-range, Mach 3+ strategic …

2021年9月10日 · Lockheed built the aircraft to play a role in Tagboard, the code-name for a Central Intelligence Agency intelligence-gathering program. The aircraft carried an un-piloted …

On December 22, 1964, the first flight of the D-21/M-21 combination (now referred to as the “M/D-21”) was successfully completed from Groom Lake. Per Johnson: "Bill Park flew at the end of …

Conceived more than 45 years ago and retired from active service since the late 1990s, Blackbirds remain the fastest piloted jets ever built. The M-21 is a variant of the A-12, the …

Lockheed eventually built two M-21s and 38 drones, and its test pilot Bill Park flew all the M-21 flights. On the fourth TAGBOARD test on 30 July 1966, a launch mishap caused the mother …

The D-21 was a supersonic reconnaissance drone, initially designed to be launched from the back of an M-21 carrier aircraft, a variant of the Lockheed A-12. The latter was the precursor to the …

Note: The M-21 is a variant of the Blackbird modified to carry drones. These drones were for flights over areas that were thought of as too dangerous for pilots to fly through, even at Mach …