JPATS-103 LOIS

Lightest Occupant In Service (LOIS)

JPATS-103 CASE 1 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.

 

Specifications
Key Features
  • Ability to sit-stand for placement in aircraft ejection seat and assume standing position after ejection
  • Modular limbs allow for easy replacement
  • Continuous leg molding pieces to avoid gapping and snaring of flight suits
Stature 152.4 cm 60 in
Seated Height 82.8 cm 32.6 in
Knee Height Sitting 47 cm 18.5 in
Buttock-Knee Length Sitting 54.4 cm 21.4 in
Weight 46.7 kg 103 lb
  • Ejection seat testing to measure inertial, force, and moment loads to help predict the effect of ejection on the well-being of the pilot
  • Helmet testing
Uniaxial accelerometers in triaxial configuration in the head chest and pelvis
6- axis force and moment transducers in the spinal columnat C1 (head), C7 (lower neck), L5 (pelvis cup), and in each femur
Angular rate sensors in the upper torso for a total of 42 channels
On-board Instrumentation data acquisition equipment may be placed into the cavity provided in the spine box in the upper torso
Data Sheets & Flyers