WATER ENTRY INTO THE MAC 200 IMMERSION SUIT DURING SIMULATED PARACHUTE JUMP AND DRAG TRIALS

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Authors
  1. Ducharme, M.B.
  2. Thompson, J.A.M.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
The MAC 200 immersion suit newly developed by Mustang Survival (Richmond, B.C.) has recently been considered a potential replacement suit for the constant wear dry immersion suit currently used by Canadian Forces aircrew. The objective of the present evaluation trial was to evaluate the effectiveness of the new neck seal concept by measuring water leakage into the MAC 200 suit during a simulated parachute jump into water followed by a 15 s drag. Four male aircrew members volunteered to participate in the study. On Day 1 they jumped form the back of a boat (about 30 cm above the water) moving at a speed of 5 km.h 1(-) and were dragged for 15 sec. On Day 2, the aircrew jumped from a platform 3 m above water to simulate the speed of parachute entry and were immediately attached to a line and dragged behind a boat for 15 sec at a speed of 5 km.h 1(-). Before and after the jump/drag procedure the aircrew were weighed to estimate the amount of water leakage into the suit. The results showed that when the neck and wrist seals of the suit were closed properly before the entry into the water, no leakage was observed following the jump/drag procedure on both testing days. When the seals were closed only after the jump (but before the drag) or left open during the jump and drag procedures, water leakage of 0.64 + or - 0.23 kg and 1.49 + or - 0.47 kg were measured, respectively. TRUNCATED
Keywords
Water immersion;Water leakage;Wet immersion suit
Report Number
DCIEM-98-R-33 — Technical Report
Date of publication
01 Jan 1998
Number of Pages
15
DSTKIM No
98-01430
CANDIS No
508213
Format(s):
Hardcopy;Document Image stored on Optical Disk

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