Accession Number:

ADB092830

Title:

Heat Stress Evaluation of Anti-Exposure Flight Gear

Descriptive Note:

Final rept.

Corporate Author:

NAVAL AIR DEVELOPMENT CENTER WARMINSTERPA AIRCRAFT AND CREW SYSTEMS TECHNOLOGY DIRECTORATE

Personal Author(s):

Report Date:

1985-05-15

Pagination or Media Count:

24.0

Abstract:

Constant-wear anti-exposure suit ensembles, employing the CWU-62P polytetrafluoroethylene PTFE coverall, were evaluated for their impact on aircrew performance under heat stress. Conditions were designed to simulate stresses experienced during aircraft operations over cold water therefore chamber temperatures were maintained at dry bulb temperature 34.0 or - 1.5 C and wet bulb temperature 23.9 ot -4.5 C. Six males, aged 21-39, were studied twice in each of five configurations for maximum 180 minute exposures. The five configurations consisted of a standard flight suit control and four combinations of the PTFE-based configurations. Total sweat rate SRT, heat storage rate Delta Q, final heart rate HR, and mean weighted skin temperatures T sub SK indicated similar trends among the configurations. The results indicate that the liner has only a limited impact on the test results therefore, the PTFE coverall appears to limit heat tolerance under those conditions. Aircrew wearing the CWU-62P coverall cannot be expected to complete three hours of aircraft operations if a moderate workload is imposed under heat stress. Originator supplied keywords include Anti-exposure Flightwear, Hypothermia Protection, Olefin Liner, PTFE Coverall.

Subject Categories:

  • Stress Physiology
  • Protective Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE