Head and Helmet Biodynamics and Tracking Performance During Exposure to Whole-Body Vibration
Abstract
Helmet-mounted equipment is being designed to optimize military aircrew effectiveness. The objective of this study was to quantify the effects of head orientation and helmet weight distribution on head, helmet, and helmet slippage rotations, and tracking performance during exposures to fighter aircrew buffeting and multi-axis quasi-random vibration. For both exposures, significant increases in the roll displacements were observed with the SIDE orientation (40 deg elevation, 70 deg azimuth). Significant increases in the pitch displacements were observed with the UP orientation (40 deg elevation, 0 azimuth) during exposure to buffeting, while both the FOR (0 deg elevation, 0 deg azimuth) and UP orientations showed relatively high pitch motions with the multi-axis exposure. Significantly high performance degradation occurred with the SIDE orientation for two of the three weight distributions during aircraft buffeting, with minimal degradation observed with the multi-axis exposure. The results suggested that the SIDE orientation had the greatest influence on performance degradation, but the effect appeared to depend on the type of exposure.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 2005
- Accession Number
- ADA433902
Entities
People
- Jeanne A. Smith
- Raymond J. Newman
- Suzanne D. Smith
Organizations
- Air Force Research Laboratory