Modeling Integrated Helmets for Aviation

The Army desires to develop advanced computer models of Aircrew Integrated Helmet Systems (AIHS), such as the HGU-56/P, for use on existing and future headform databases. These models must analyze the interrelationship between AIHS and headforms.Comfort, Protection, Performance and Compatibility (CPPC) evaluation of AIHS and ground forces helmets will be the primary objective. Visual Sciences, Inc. (VSI) will develop state-of-the-art finite element (FEA) models to achieve this objective.Protocols for simulated testing will be formulated to objectively assess CPPC using FEA models. VSI's Phase-I research focused on evaluating fit criteria and developing model concepts for the HGU-56/P. The proposed Phase-II research will developpractical tools to visually and quantitatively evaluate helmet fit on realistic digital headforms. These tools will facilitate design of head mounted equipment with optimal CPPC. VSI made significant advances to overcome technical hurdles and demonstratekey concepts during Phase-I program. This proposal presents a comprehensive Phase II research program to develop these concepts into practical working models for evaluating HGU-56/P and other military and commercial helmet systems. This research willsignificantly enhance the Army's capability to evaluate existing helmets and design new helmets using a representative sample population or a boundary figure subset of digital headforms. The technology developed under this program will compliment existingcomputer simulation work and significantly reduce time and cost associated with fitting, customization, and modification of helmet systems. These tools will not only assist in evaluating and improving current helmet systems, but also will greatly enhancethe ability of the Army to design future personal protective equipment. Commercialization potential for the technology developed under this program is significant, as numerous industrial applications would benefit from the ability to cost effectivelydesign and conduct simulated testing of new protective equipment in order to optimize comfort, safety and reliability at a minimal cost. The ability to simulate helmets performance will aid in the development and optimization of new helmet materials.