Replacement of Cushions in Energy Absorbing Seats – Use of Modeling to Better Understand Test Variability

​Aircraft seat cushions play a crucial role in the protection of occupants during crash landings. Testing has shown that only changing the material composition of the cushion can change the risk of injury to the occupant from less than 5% to greater than 50%. Dynamic testing of aircraft cushions shows significant variability that makes evaluation of replacement cushions risky. This project will use a physics based numerical model of a seat system to evaluate the effect of the variation seen in physical testing of the cushions.