Simulation of cardiovascular response to acceleration stress following weightless exposurePhysiological adjustments taking place during space flight tend to reduce the tolerance of the crew to headward (+Gz) acceleration experienced during the reentry phase of the flight. This reduced tolerance to acceleration stress apparently arises from an adaptation to the microgravity environment of space, including a decrease in the total circulating blood volume. Countermeasures such as anti-g garments have long been known to improve the tolerance to headward g-force, but their effectiveness in space flight has not been fully evaluated. The simulation study presented in this paper is concerned with the response of the cardiovascular system to g-stress following cardiovascular deconditioning, resulting from exposure to weightlessness, or any of its ground-based experimental analogs. The results serve to demonstrate the utility of mathematical modeling and computer simulation for studying the causes of orthostatic intolerance and the remedial measures to lessen it.
Document ID
19850046467
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Srinivasan, R. (Management and Technical Services Co. Houston, TX, United States)
Leonard, J. I. (Management and Technical Services Co. Houston, TX, United States)