Simulation of High +Gz Onset in the Dynamic Environment Simulator.
AIR FORCE AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH
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This report documents a unique approach of coupling the cab-axis degree of freedom to the main arm motion of the Air Force Aerospace Medical Research Laboratory human centrifuge, or DES Dynamic Environment Simulator. This technique of simulating high Gzsec to 2.875 Gzsec were investigated and eleven subjects completed the study. Peripheral light loss PLL, a precursor to loss of consciousness, was recorded in all eleven subjects using this technique. Three G-tolerance scenarios were investigated relaxed subjectno anti-G suit inflation, relaxed subjectanti-G suit inflation and straining subjectanti-G suit inflation. A semi-circular light bar was used in the DES cab to monitor peripheral light loss of subjects. The PLL results compare favorably with similar results in the NADC centrifuge where subjects faced tangentially and were subjected to Gz only rather than Gx and then GZ as in this experiment. These results give a strong indication that this technique can be used to stimulate high Gz onset in the evaluation of anti G-valves, suits and straining maneuvers.
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