Mass Properties Comparison of Dismounted and Ground-Mounted Head-Supported Mass Configurations to Existing Performance and Acute Injury Risk Guidelines.

In order to limit the aviator's exposure to potentially unsafe helmet configurations, the U.S. Army Aeromedical Research Laboratory (USAARL) developed the USAARL Head-supported mass (HSM) Performance Curve and Acute Injury Risk Curve as guidelines for Army aviation HSM.