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Biodynamic simulations of the effect of a neck-mounted air bag on the head/neck response during high G acceleration.

Abstract
New helmet-mounted devices (such as night-vision goggles, laser eye protection, etc.) have created new safety hazards for pilots during ejection or high G maneuvering. In order to prevent the resulting head/neck injuries, this study extends the air-bag protection system developed for ground vehicles to a neck mounted system for aircrew personnel. Results, carried out by computer biodynamic simulations using the Articulated Total Body Model (ATB), showed that: 1) helmet weight had little effect on head/neck torque, contact force and flexion angle; 2) initial head/neck position and center of gravity offsets of the helmet-mounted devices had significant effects on head-neck torques, contact forces, and neck flexion angles; and 3) the neck mounted air bag significantly reduced neck torques, contact forces, and neck flexion angles. We conclude that the neck-mounted air bag system could significantly reduce the severity of head/neck injuries to pilots during ejection or high G maneuvering.
AuthorsC M Lee, A Freivalds, S Y Lee
JournalAviation, space, and environmental medicine (Aviat Space Environ Med) Vol. 62 Issue 8 Pg. 747-53 (Aug 1991) ISSN: 0095-6562 [Print] United States
PMID1930056 (Publication Type: Journal Article)
Topics
  • Acceleration
  • Aircraft
  • Biomechanical Phenomena
  • Computer Simulation
  • Craniocerebral Trauma (prevention & control)
  • Equipment Design
  • Gravitation
  • Head Protective Devices
  • Humans
  • Models, Anatomic
  • Neck Injuries
  • Weights and Measures
  • Wounds and Injuries (prevention & control)

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