Dr. Liam Gannon
Defence Research and Development Canada

Military personnel on small high speed craft experience sustained extreme motions and repeated high-g slam impacts. Existing commercial shock mitigation seats can reduce the negative effects of this severe environment on health and safety; however, the procedures used to specify shock mitigation seat performance requirements and especially methods used to demonstrate compliance with performance requirements are not well understood. DRDC Atlantic is pursuing an R&D initiative to reduce the risk of acute and chronic injury to personnel serving in small high speed military craft. This programme seeks to improve the state of the art for modeling, simulation, testing, and evaluation of shock mitigation seat technologies. The presentation will outline the shock mitigating seat test and evaluation programme that will soon commence at the Naval Engineering Test Establishment in Montreal, Canada under the direction of DRDC Atlantic. Methods for modelling the response of shock mitigating seats to high speed craft motions and seat characteristics required to accurately characterize the response will also be discussed.