|
gptkbp:instanceOf
|
military drone program
|
|
gptkbp:countryOfOrigin
|
gptkb:United_States
|
|
gptkbp:developedBy
|
gptkb:Lockheed_Corporation
|
|
gptkbp:engineType
|
ramjet
|
|
gptkbp:firstFlight
|
1964
|
|
gptkbp:guidanceSystem
|
inertial navigation system
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
D-21 drone program
|
|
gptkbp:maximumSpeed
|
Mach 3+
|
|
gptkbp:missionType
|
high-speed reconnaissance
|
|
gptkbp:nickname
|
gptkb:Tagboard
|
|
gptkbp:notableEvent
|
M-21 launch accident (1966)
|
|
gptkbp:notableMission
|
reconnaissance over China
|
|
gptkbp:numberBuilt
|
38
|
|
gptkbp:operatedBy
|
gptkb:Central_Intelligence_Agency
gptkb:United_States_Air_Force
|
|
gptkbp:payload
|
photographic reconnaissance equipment
|
|
gptkbp:platform
|
B-52 Stratofortress
M-21 (modified A-12 aircraft)
|
|
gptkbp:purpose
|
reconnaissance
|
|
gptkbp:range
|
3,000 miles
|
|
gptkbp:recoveryMethod
|
mid-air retrieval
|
|
gptkbp:relatedTo
|
gptkb:SR-71_Blackbird
gptkb:Lockheed_A-12
|
|
gptkbp:retired
|
1971
|
|
gptkbp:status
|
retired
|
|
gptkbp:successor
|
satellite reconnaissance
|
|
gptkbp:usedDuring
|
gptkb:Cold_War
|
|
gptkbp:bfsParent
|
gptkb:M-21_carrier_aircraft
|
|
gptkbp:bfsLayer
|
7
|