Discoverer 4 (KH1-1)

Launch data:

Spacecraft data:

Mission details:

• Discoverer 4 was a first generation, low resolution photo surveillance satellite launched by the US Air Force from Vandenberg AFB aboard a Thor Agena-A rocket. The spacecraft was a KH-1 type.
• First stage performed as expected, but unplanned rotation of the Agena caused the propellants to swirl away from the outlet pipes and the engine shut down early, wich insufficient velocity to go into orbit. Fell into the South Pacific