Future Project Mercury astronaut Donald K. "Deke" Slayton undergoes psychological and stress test at Wright-Patterson Air Force Base, Ohio. Astronaut undergoes a treadmill test. Subject walks at a constant rate on a moving treadmill which is elevated one degree each minute. The test continues until heart beat reaches 180 beats per minute.
NASA Project Mercury astronaut candidate Lt. Hal R. Crandall, USN, undergoes equilibrium and vibration stress test at Wright-Patterson Air Force Base, Ohio. He must keep the chair upright while blind-folded, and the chair vibrates at a high-frequency.
NASA Project Mercury astronaut candidate Major Hal W. Christian, Jr., USAF, undergoes psychological and stress test at Wright-Patterson Air Force Base, Ohio. Astronaut undergoes a treadmill test. Subject walks at a constant rate on a moving treadmill which is elevated one degree each minute. The test continues till heart beat reaches 180 beats per minute. Subject sits on a stool in between the tests.
NASA Project Mercury astronaut candidate Major Hal W. Christian, Jr., USAF undergoes treadmill test at Wright-Patterson Air Force Base, Ohio. He sits on a stool while doctors take readings from an instrument.
NASA Project Mercury astronaut candidate Captain Donald K. "Deke" Slayton undergoes treadmill test at Wright-Patterson Air Force Base, Ohio.
NASA Project Mercury astronaut candidate undergoes Equilibrium and Vibration test at Wright-Patterson Air Force Base, Ohio. The candidate must keep the seat in an upright position utilizing the control stick located between his knees. The test is conducted first without the blindfold, then with the blindfold. After a brief time, the seat begins to vibrate at higher and higher frequencies.
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