Report on the Effects of Various Wave Conditions on the Insulation Values of Immersion Suit Assemblies Measured on a Thermal Instrumented Mannikin


  1. Potter, P.
Corporate Authors
CORD Group Ltd, Dartmouth NS (CAN);Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
The CORD Group Limited under contract with the Defence and Civil Institute of Environmental Medicine (DCIEM) and the Command Surgeon, Air Command, Westwin, Manitoba, developed the following scope of work: conduct a series of thermal mannikin tests at the Institute of Marine Dynamics in wave conditions from 0.70 cm utilizing dry suits and one-piece wet suits; concurrently, conduct a series of human subject tests at the Institute of Marine Dynamics in JONSWAP wave conditions from 0.70 cm utilizing dry suits; analyze the data from the two (2) series of tests to determine if the effects noted on the mannikin occur in the human subjects too and if so, corrective factors for manikin testing will be developed for turbulent water testing; and, based on data, confirm or deny whether wave conditions significantly effect the thermal performance of dry suits on human subjects. The results of the Typhoon dry suit tests in the various wave conditions closely mirrors the trend observed in the preliminary experiment conducted in January 1994. This demonstrates the manikin's consistency. The rise in insulation during the 60 cm wave from the 50 to 70 cm wave was observed to occur because the wave spectrum had to alter to permit the wave machine to run without the computer program crashing. Since the wave heights were randomly selected, the 60 cm wave occurred early in the experiment and the wave machine could not sustain this wave spectrum. TRUNCATED
Wave conditions;Thermal instrumented manikins;Immersion suits
Report Number
DCIEM-94-R-18 — Final Report
Date of publication
01 Dec 1994
Number of Pages
Document Image stored on Optical Disk;Hardcopy

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