A Statistical Study of Grip Retention Force
Final rept. 30 Jun 1971-2 Mar 1973
PAYNE INC ANNAPOLIS MD
Pagination or Media Count:
To assess an ejection seat occupants ability to hold on to a handle the data from the two-handed force retention capability tests of Garrett, Alexander and Bennett are analyzed to produce curves of probability of letting go as a function of force. Two curves are produced one for double grip handles, comprising a T-Bar and a Twin Grip and one for Rings, comprising a flexible loop and the familiar, rigid D-Ring. It is concluded that, at the force levels experienced in most present-day ejections, which occur at low and moderate air speeds, the probability of letting go a ring is an order of magnitude greater than for a double grip handle. It is concluded that handle design strongly influences the probability of letting go, and therefore the probability of arm flail injury.
- Stress Physiology