The Martin X-23 PRIME (Precision Recovery Including Maneuvering Entry) was a small uncrewed lifting body re-entry vehicle tested by the United States Air Force in the late 1960s. PRIME 1 was launched on 21 December 1966 on a mission to simulate a low-earth orbit reentry with a zero cross-range. The ballute deployed at 30.43 km, though the recovery parachute failed to completely deploy. The vehicle crashed into the Pacific Ocean and was not recovered.
SuborbitalThe objectives of the Biosatellite, a.k.a. Biosat, Bios (Biological Satellite), were to determine the biological effects of the space environment upon daily rhythms of living organisms and to obtain and analyze available data on the performance in orbit of life support, altitude control, and other spacecraft systems, including instrumentation for recording biological data.
Low Earth Orbit