Status
Failure
KH-5 4 (Discoverer 27)
Launch Time
Fri Jul 21, 1961 22:35 UTC
Fri Jul 21, 1961 22:35 UTC
Open circuit in guidance computer led to loss of control and vehicle breakup at T+60 seconds.
Rocket
Mission Details
KH-5 4 (Discoverer 27)
The KH-5, also known as Keyhole 5 or codenamed Argon, served as the area survey component within the Corona program. Equipped with the Argon camera, also referred to as Corona-A, this single-frame camera was integrated with standard Corona hardware, including the return vehicle (SRV). Operating with a ground resolution of approximately 140 meters, the KH-5 relied on the Agena-B stage for three-axis control and propulsion throughout its mission. Upon completion, the SRV was deorbited using its own small solid rocket motor.
Location
SLC-1W (75-3-4), Vandenberg SFB, California, USA
Stats
1961
25th orbital launch attempt
Thor-Agena
27th mission
8th mission of 1961
11th failed mission