COMPARATIVE EVALUATION OF A STANDARD FACE CURTAIN AND AN EXPERIMENTAL D-RING LOCATED ON THE SEAT FRONT AS MODES OF ACTUATING EJECTION DURING EXPOSURE TO ACCELERATION; LETTER REPORT CONCERNING
NAVAL AIR DEVELOPMENT CENTER JOHNSVILLE PA AVIATION MEDICAL ACCELERATION LAB
Pagination or Media Count:
A comparative evaluation is presented of a standard face curtain and an experimental D-ring located on the seat front as modes of actuating ejection during exposure to acceleration. The results are presented graphically in two forms. The time measures for both the successful and the unsuccessful attempts to eject are considered together in one distribution. The harmonic mean reaction time the time required to initiate the ejection procedure and the harmonic mean action time the time required to perform the ejection procedure are presented for the two ejection controls under each orientation as a function of the G level. The action times, however, are consistently shorter for the D-ring for all the orientations of acceleration. It may be concluded that for ease of access during exposure to sustained accelerations in the orientations which were investigated, an ejection control located on the front of the ejection seat is superior to the standard face curtain.