Lightest Occupant In Service (LOIS)

The JPATS-103 represents Case 1 at 103lbs. The JPATS dummies were produced as part of the Joint Primary Aircraft Training System developed by the Armed Services starting in 1993. The training system consists of the aircraft, support systems-ground equipment, and ejection seat dummies to test the escape systems. The JPATS series dummies are used to test the performance of aircraft ejection seats. They are dressed and provided with prototype flight gear, then placed in the ejection seat in the aircraft or test body for sled testing. When the dummy is ejected, the transducers on the dummy measure inertial, force, and moment loads, with the information to be used in predicting the effect of the ejection on the well-being of the pilot. Military standard occupant protection criteria are used to evaluate dummy and ejection system performance based upon these test results.