Accession Number : AD0696874

Title :   ATTENUATION OF BIOLOGICAL STRESS FROM COMBINED VIBRATION AND ACCELERATION BY USE OF PRESSURE BREATHING,

Corporate Author : GENERAL DYNAMICS/CONVAIR SAN DIEGO CALIF

Personal Author(s) : Armstrong,R. C.

Report Date : 11 MAR 1965

Pagination or Media Count : 34

Abstract : The complex launch and reentry environment of future manned spacecraft and the associated crew stresses resulting from exposure to the dynamic loads are analyzed. The analysis provides a strong theoretical basis for predicting significant increases in crew stresses from vibrations in future space operations. The biomechanics of g, vibration and hypobaric stress summation are identified. Techniques designed to attenuate the independent and combined stresses are presented along with the theoretical grounds for postulating the protection concepts. Recommended techniques include use of positive pressure breathing and increased space cabin environmental pressure. (Author)

Descriptors :   (*MANNED SPACECRAFT, AERODYNAMIC LOADING), (*SPACE CREWS, STRESS(PHYSIOLOGY)), (*PRESSURE BREATHING, CLOSED ECOLOGICAL SYSTEMS), VIBRATION, ACCELERATION, GRAVITY, RESPIRATION, THORAX, TISSUES(BIOLOGY), DIAPHRAGMS(ANATOMY), ATMOSPHERE ENTRY, CARDIOVASCULAR SYSTEM, RESPIRATORY SYSTEM, PROTECTION, ATTENUATION, RESONANT FREQUENCY, LABORATORY ANIMALS, TESTS

Subject Categories : Anatomy and Physiology
      Stress Physiology
      Manned Spacecraft
      Life Support Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE