Thirty-Two Hour Outdoor Wearing Trial of Silicone XM29and Rubber XM31Prototype Masks under Simulated Combat Conditions.

摘要

A 32-hour field test of two prototype protective masks was completed with 16men in temperate weather. The transparent,coated,silicone rubber XM29mask,with a newly designed peripheral seal,was judged acceptable for long-term wear as was the rubber XM31mask. The subjects performed infantry missions effectively while wearing the masks. Wearability,discomfort,malfunctions,and recommended design modifications are described. Significant changes in design features of the prototype masks were proposed as a result of observations during these trials.