Abstract
The tolerance to abrupt linear deceleration (-Gx) and the subject response to a lap belt restraint system were investigated. Nineteen adult male baboons comprised the test pool. The effects of impacts of 8.6-40 g were studied, with non-survivability used as the index of tolerance. The results indicated that the tolerance to impact (LD50) approximated a 32 g sled deceleration. Excellent linear correlations were established between peak lap belt and seat pan forces versus maximum sled deceleration. Likewise, a linear relationship was found between peak head angular accelerations and maximum sled deceleration.