G-force and Pilot Physiology

Paper Summary:

This paper explains that the need to understand the relationship between G-forces and human physiology is greater now than at any previous time in the history of powered flight, since the phenomenon of G-force-induced pilot incapacitation was initially identified by the very first generation of military combat pilots during the First World War.

From the Paper:

"Einstein demonstrated that linear acceleration and gravity are precisely equivalent forces. As a direct consequence of this principle, a 150-pound pilot with an eight-pound skull pulling 4 G's weighs (literally) 600 pounds and experiences his own head as weighing thirty-two pounds (Talleur, 2003). When one considers the importance of instantaneous 360-degree visibility, rapidly changing flight paths of multiple adversaries
in aerial combat maneuvers, and the necessity of quick hand and foot movements in the cockpit, the implications of G-force buildup are rather obvious. For the same reason,aircraft capable of producing high G-forces in departure from controlled flight have been equipped with explosive powered ejection seats, virtually since the dawn of the jet age
(Talleur, 2003)."

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