Effects of Magnetic Receiver Unit (MRU) Installation on the Blunt Impact Protection of the HGU-56/P Aircrew Integrated Helmet System (AIHS)

摘要

The AH-64 Apache helicopter currently utilizes an electro-optical system for tracking gunner and pilot head motion. A critical component of this system is the Integrated Helmet and Display Sighting System (IHADSS) helmet. As part of the current 'Block III' upgrade, Apache Product Management Office has opted to adapt the HGU-56/P Aircrew Integrated Helmet System (AIHS) to accept and utilize a 'Magnetic Receiver Unit' to replace the current tracking system. The objectives of this study were to assess overall level of blunt impact head protection as well as parameters of weight and location of the center of mass (CM) of the AIHS when configured with the MRU. Whereas no definitive statement can be made as to the influence of the MRU installation on the blunt impact protection provided by the HGU-56/P when impacted in the rear, this configuration should provide adequate impact protection in survivable rotary- wing mishaps while providing improved impact protection in the rear headband region as compared to the IHADSS. Furthermore, installation of the MRU should not adversely affect the wearer's ability to identify and track targets.