Determination of the Optimal Location of Ripcord Handles in Parachutes

The purpose of this research was to determine a location for the ripcord handle in parachutes, most compatible with human capabilities. Seven different locations were tested for the ripcord handle. Maximum voluntary forces were measured with the subjects pulling the ripcord handle using their right, left, and both hands at all seven locations. A comparison of single-handed versus both-handed pulls was made. Results indicated that with the handle located at the left or right thigh the subjects were able to exert more force than any other locations. Also the use of two hands yielded the largest force.