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Effects of the abnormal acceleratory environment of flight.

Abstract : A basic description of the physical nomenclature relating to the motional environment of flight is followed by discussions of the physiologic effects of that environment on the human cardiovascular and vestibular system. The effects of +Gz stress and the various means of protecting aircrew against such stress are given special emphasis. The mechanisms of spatial disorientation and motion sickness and the appropriate countermeasures are also presented.