AIR FORCE AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH
A physical test was conducted to determine the protective properties of a 7 man life raft in the cold. From the known energy output of 2 heaters and 34 measured temperatures, the insulation values for the total raft, its floor, ceiling, sidewalls, back and front could be derived. The raft was floating in a swimming pool and water temperature maintained at 21.50. Two graphs show the increasing cold protection when 1 to 7 subjects occupy the raft.