Abstract: The ejection seat simulator is made with a cockpit which can be moved away from a seat so as to provide access to the seat in cases of accident or in cases where repairs are required.The throttle and pull ring are connected with suitable electronic electrical lines which can lead back to the control panel when the cockpit is moved away from the seat. In this regard, the lead lines are long enough so as to permit a desired extent of movement of the cockpit 18.

Abstract: Apparatus is disclosed for cushioning or attenuating the highly destructive, peak impact forces which occur between an operating pile hammer ram and the pile cap or helmet at the moment of initial contact while permitting a maximum of the delivered energy to be converted into useful work in driving the pile. Such impact forces, which can physically damage the pile hammer, the helmet, the pile, or all three, are effectively and efficiently reduced by means of an energy storing, flat spring member. Said member is so arranged as to permit a determinable, relatively constant portion of the energy absorbed from the hammer blow to be stored during hammer deceleration and then be returned to the hammer ram on its retraction stroke while minimizing that portion of absorbed energy which is irrecoverably converted to heat.