Integration of Portable Air Blowers into the Legs of a Constant Wear Immersion Suit


  1. Leggatt, J.
Corporate Authors
Defence R&D Canada - Toronto, Toronto ONT (CAN);Mustang Survival Corp, Richmond BC (CAN)
Under contract to DRDC-Toronto, Mustang Survival Corp. conducted a project to integrate portable air blowers into the leg regions of a Modified Aircrew Constant Wear Immersion Suit. The Modified Constant Wear Immersion Suit has an adjustable style neck seal. The primary aim of this project is to develop a system that will circulate ambient air within the suit microenvironment thereby, displacing sweat-laden air out of the open neck seal. It is hypothesized that the resulting increase in temperature and water vapor gradients will concurrently increase the dry and evaporative heat loss from the skin and enhance aircrew comfort. An initial experiment, using a high-flow and high-pressure blower, was performed to quantify the airflow characteristics of the suit system and provide evaluation criteria for the blower selection process. The following suit system configurations were studied in both sitting and standing positions: * Modified Constant Wear Immersion Suit with Non-Uniform Breathable Foam Liner; * Modified Constant Wear Immersion Suit with Non-Uniform Breathable Foam Liner and CF Helicopter LP/SV; and * Modified Constant Wear Immersion Suit with Non-Uniform Breathable Foam, Liner, CF Helicopter LP/SV and PCU-15/P Parachute Harness. The back-pressure range for all of the configurations above was measured as 0.83 to 10.28 in H2O. TRUNCATED
Immersion suits
Report Number
DRDC-TORONTO-CR-2002-191 — Contractor Report
Date of publication
15 Nov 2002
Number of Pages

Permanent link

Document 1 of 1

Date modified: