Mercury Atlas 5 Spacecraft: S/C-9 Launch Vehicle: Atlas 93-D Launched: 29 Nov 1961 Prime Crew	⇑ Mission List ⇑ Designation: Mercury A O(C)-1 Description: 1st Mercury Atlas chimpanzee orbital
	Enos Backup Crew Minnie

Decay Date: 1961-11-29 USAF Sat Cat: 208 COSPAR: 1961-A-Iota-1 Apogee: 237 km (147 mi) Perigee: 158 km (98 mi) Inclination: 32.6000 deg Period: 88.30 min Mercury-Atlas 5 (MA-5), the second and final orbital qualification of the spacecraft prior to manned flight was launched from Cape Canaveral with Enos, a 37.5 pound chimpanzee, aboard. Scheduled for three orbits, the spacecraft was returned to earth after two orbits due to the failure of a roll reaction jet and to the overheating of an inverter in the electrical system. Both of these difficulties could have been corrected had an astronaut been aboard. The spacecraft was recovered 255 miles southeast of Bermuda by the USS Stormes. During the flight, the chimpanzee performed psychomotor duties and upon recovery was found to be in excellent physical condition. The flight was termed highly successful and the Mercury spacecraft well qualified to support manned orbital flight." The mission insignia shown is post factum. References: Grimwood, James M. 1963. Project Mercury: A Chronology. NASA SP-4001. Encyclopedia Astronautica Wikipedia.