This study investigated the head injury criteria (HIC) compliance for front-row seating in transport class aircraft. Energy-absorbing bulkheads were designed using the analysis code MADYMO and simple static tests. The first of these designs used a simple aluminum sheet and the second used an aluminum honeycomb panel with fiberglass facesheets. Both designs satisfied the HIC requirement during 16-g dynamic sled tests. The investigation also established that foam pads are not effective HIC attenuators as the only means of energy absorption on a rigid bulkhead. The HIC value for a specific design was found to be sensitive to the following parameters: head impact velocity, head impact angle, seat setback distance, belt properties, and the panel stiffness and strength. The studies also showed that a minimum of 2-4 in. of bulkhead crush is required to attenuate the HIC values to levels below 1000 during 16-g dynamic sled tests.
Parametric Study of Crashworthy Bulkhead Designs
2002
74 pages
Report
Keine Angabe
Englisch
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