Evaluation of a Proposed F-4 Ejection Seat Cushion by +Gz Impact Tests.
Final rept. Jul 86-Jun 87,
ARMSTRONG LAB WRIGHT-PATTERSON AFB OH CREW SYSTEMS DIRECTORATE
Pagination or Media Count:
During 1986 to 1987, approximately 45 human impact experiments were accomplished on a vertical deceleration tower to evaluate the influence of three separate seat cushions on the human biodynamic response during positive vertical Gz impact accelerations that simulated the catapult phase of ejection. The human subjects were exposed to the following three seat cushions at a peak impact level of 10 G 1 the standard operational F-4 ejection seat cushion, 2 the standard operational ACES II ejection seat cushion, and 3 a proposed F-4 ejection seat cushion composed of ConformTM foam. Principle measurements that were collected and analyzed included seat pan loads, head accelerations, and chest accelerations. Test results showed that the current operational F-4 seat cushion produced greater biodynamic responses in terms of parameter magnitudes during vertical acceleration than either the proposed F-4 seat cushion or the ACES II seat cushion.
- Escape, Rescue and Survival