The Effect of Aircrew Age on +Gz Tolerance as Measured in a Human-Use Centrifuge
Abstract
Pilots of high performance military aircraft are often exposed to positive acceleration stress (+Gz). This type of acceleration displaces blood in the head to foot direction. As the pressure in the vessels of the lower body increases, the vessels dilate, and a major portion of the blood from the upper part of the body is translocated to these lower vessels. The pooling of blood in the lower extremities translates into reduced cardiac output provoking the cardiovascular system, mainly by the activation of baroreceptor reflexes, to maintain adequate blood flow to the central nervous system (CNS) and thereby maintain normal brain function. The physiologic symptoms of acceleration stress range from petechia hemorrhages (burst capillaries present in the limbs) to loss of vision and ultimately loss of consciousness with potential fatal consequences when it occurs in flight.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2000
- Accession Number
- ADP010557
Entities
People
- Barry S. Shender
- Estrella C. Forster
- Estrella M. Forster
Organizations
- Naval Air Warfare Center Aircraft Divison