Repeatability and Reproducibility of a Standard Test Method for Measuring Head-Supported Mass Properties

During development of military helmets and HMDs, materiel developers need a valid and repeatable test methodology for measuring their mass properties. DEVCOM SC and USAARL reviewed existing mass properties measurement procedures and identified critical items to incorporate into a unified Army methodology.

Army Combat Capabilities Development Command Soldier Center, Natick, MA

U.S. military service members are provided protective head gear for use in training and operational environments. This headgear is typically in the form of a helmet, at a minimum consisting of a rigid outer shell and an individual fitting and retention system, which is an essential personal protective equipment (PPE) item. Many different helmet configurations are used by the U.S. soldier, depending on their military occupational series, the anticipated threat, and the operational environment.

Helmet designs have evolved to provide protection beyond fragmentation, to include head protection from blunt head impact events and maxillofacial protection. Military aviation helmets also include protective visor systems, hearing protection, and integrated communication systems. The helmet shell also provides an ideal mounting surface for ancillary equipment or advanced tactical systems such as night vision systems, weapon targeting displays, and other visual augmentation systems. As technology continues to advance, the use of helmet mounted devices (HMDs) has become increasingly common to enhance capabilities.