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MISSION/STUDY INFORMATION

Mission or Study ID:   Mercury 7
Program:
Mercury
Spacecraft/Location:
Mercury-Atlas 7
Launch/Start Date:
05/24/1962
Landing/End Date:
05/24/1962
Duration:
4.9 hours
Mercury 7 Crew Patch

Description
The flight objective and duration of Aurora 7, or Mercury 7 (MA-7), was very similar to the previous flight of Mercury 6, with 3 Earth orbits planned for a flight of approximately 5 hours. The MA-7 mission, launched on May 24, 1962, provided an appreciable extension of 4.5 hours to the observation of man's physiological responses to space flight. A number of biomedical objectives were continued from the MA-6 flight including study of man's physiological and psychological responses to space flight, including launch and reentry accelerations, microgravity, gravity transition periods, and the artificial environment of a contained spacecraft.

Although the general objectives of each Mercury flight were similar, there were many specific differences. One of the most important medical variables from flight to flight was the normal physiological differences between pilots. Preflight, inflight and postflight comparisons for a particular individual could be made in some detail, but only general comparisons between astronauts were possible.

The stresses of space flight were well tolerated by MA-7 astronaut Scott Carpenter. All flight responses were considered to be within acceptable physiological ranges. Specifically, the heart rate response to nominal exercise demonstrated a reactive cardiovascular system. An abnormal electrocardiogram (ECG) tracing was recorded during reentry and is believed to have resulted from the increased respiratory effort associated with straining to continue speech during maximum reentry acceleration. No disturbing body sensations were reported as a result of near-weightless flight. Astronaut Carpenter felt that all body functions were normal.

Astronaut Carpenter also tested foods specially packaged for the properties of fluids in the gravity-free environment, and took photographs and photometric readings of the stars. The heavy schedule of experiments and manual capsule maneuvering exercises seriously taxed his ability to perform and, the manual maneuvering of the spacecraft resulted in a higher than anticipated fuel expenditure. The status of the fuel supply made it necessary for Aurora 7 to undertake a long period of drifting flight during the third orbit to conserve fuel.

Although the early fuel loss caused concern, results from the fuel-conserving procedure developed to bring Mercury 7 safely back to Earth proved useful in planning rest and sleep periods for astronauts on the longer manned missions of the future.

Photo Gallery
Experiments on this Mission