KH-2 3 [USAF]
The KH-2 (Keyhole-2) was second version in the Corona-program to build an optical reconnaissance satellite. These satellites were all launched under the name Discoverer.
The KH-2 payload consisted of the improved C' (Corona prime) single panoramic camera and a single General Electric return vehicle (SRV, Satellite Return Vehicle). The improved and simplified C'-camera was built by the Fairchild Camera Co. and with a f/5.0 aperture and 61 cm focal length had a ground resolution of 10.7 m.
The satellite was based on the larger Agena-B upper stage, which provided attitude control in orbit. The film return capsule carried its own small solid-fuel retro motor to deorbit at the end of the mission with mid-air recovery of the returning capsule by a specially equipped aircraft.
Ten KH-2 satellites were launched, of which four resulted in a successful return of film. Four missions failed to orbit.
Some satellites carried secondary payloads mounted on the satellite:
|Type / Application:||Reconnaissance, photo (film return type)|
|Configuration:||Agena-B, 1 SRV|
|Propulsion:||Bell 8081, Star-12 retro motor|
|KH-2 1 (Corona 16, Discoverer 16, Soctop 3)||1960-F15||26.10.1960||Va 75-3-4||F||Thor-DM21 Agena-B|
|KH-2 2 (Corona 17, Discoverer 17, Soctop 4)||1960 ο||12.11.1960||Va 75-3-5||Thor-DM21 Agena-B|
|KH-2 3 (Corona 18, Discoverer 18)||1960 σ||07.12.1960||Va 75-3-4||Thor-DM21 Agena-B|
|KH-2 4 (Corona 22, Discoverer 22, Soctop 5)||1961-F02||30.03.1961||Va 75-3-4||F||Thor-DM21 Agena-B|
|KH-2 5 (Corona 25, Discoverer 25, Taki (1))||1961 ξ 1||16.06.1961||Va 75-1-1||Thor-DM21 Agena-B|
|KH-2 6 (Corona 26, Discoverer 26, Wild Bill, Soctop 7)||1961 π||07.07.1961||Va 75-3-4||Thor-DM21 Agena-B|
|KH-2 7 (Corona 28, Discoverer 28, Taki (2))||1961-F08||04.08.1961||Va 75-1-1||F||Thor-DM21 Agena-B|
|KH-2 8 (Corona 33, Discoverer 33)||1961-F10||23.10.1961||Va 75-3-5||F||Thor-DM21 Agena-B|
|KH-2 9 (Corona 34, Discoverer 34, Topsoc 4)||1961 αε 1||05.11.1961||Va 75-1-1||Thor-DM21 Agena-B|
|KH-2 10 (Corona 35, Discoverer 35)||1961 αζ 1||15.11.1961||Va 75-3-4||Thor-DM21 Agena-B|
Further KH missions:
Further Discoverer missions:
Further Corona missions:
Further Aftrack SIGINT missions: