Aerodynamic effects have a profound impact on the performance of the ejection seat/crewmember escape system during high speed ejection. Of particular concern are the aerodynamic effects on seat stability and potential injury to the crewmember due to a high dynamic pressure environment. To better assess the performance of an ejection system, an EASY5/ACESII (Engineering Analysis SYstem/Advanced Concept Ejection Seat) ejection seat model, was coupled with a crewmember model, the ATB (Articulated Total Body) model in a previous study. However, the aerodynamics capabilities in both the ejection seat and crewmember models needed to be further consolidated for evalaution of a complete ejection seat system.
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