Study on Simulation Method to Determine the Inflation Threshold of Head Protective Airbag for High-speed Helicopter Pilot

Abstract Compared with ordinary helicopters, the flying speed of high-speed helicopters is increased from 350km / h to 450km h, and crash bound exceed 12.8m s, which greatly increases probability collision injury pilots’ head. The equipment, such as traditional safety belts crashworthy seats, cannot play an effective role in protection. In order effectively improve survival rate helicopter pilots, main method European American countries design additional head protective airbags. paper carried out study on simulation for determining protection airbag inflation threshold value. Based LS-DYNA, it has established impact model cockpit – seat belt pilot system. At same time, HIC value dummy (no more than 1000N) pull force shoulder strap 8890N) are taken objective function simulate process man/seat system multiple states helicopter. Finally, determined, provides a critical support development airbag.