Accession Number : ADA195280

Title :   Improving Low Temperature Startability of M113 Vehicles: Hot Air Heating Tests.

Descriptive Note : Memorandum rept.,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT SUFFIELD RALSTON (ALBERTA)

Personal Author(s) : Stupich, T F ; Shankhla, V S ; Foerster, W G

PDF Url : ADA195280

Report Date : Mar 1988

Pagination or Media Count : 226

Abstract : Tests were conducted to determine the effect of hot air heating systems on the temperatures and the starting ability of the Canadian Forces M113A1 Armoured Personnel Carrier. Results showed that M113 vehicles require heating in order to start at temperatures below -12 C. Two hot air heating systems proved to be capable of enabling vehicle starting at -16 C, which, because of unusually warm ambient conditions, was the lowest temperature that occurred during testing. One of the heating systems supplied hot air to the combustion air intake, and results suggest that this method may be capable of enabling starting at moderately cold temperatures (down to approx. -25 C). The other system, which supplied hot exhaust gases to the engine compartment and hot exhaust-free air to the batteries and personnel compartment, appeared as though it would be capable of enabling vehicle starting at much lower temperatures. However, there was a significant amount of waste heat associated with using hot air to warm the engine on the vehicle and the condensation inherent to heating with exhaust gases caused serious problems. In addition, the Espar Swingfire pulse combustion heaters that were used as the heat source in both heating systems were found to be extremely unreliable. (Canada).

Descriptors :   *ENGINE STARTERS, *ARMORED PERSONNEL CARRIERS, *AIR HEATERS, *COLD WEATHER TESTS, AIR INTAKES, CANADA, COMBUSTION, COMPARTMENTS, CONDENSATION, EXHAUST GASES, HEAT, HIGH TEMPERATURE, HOT GASES, LOW TEMPERATURE, PERSONNEL, STARTING, TEST METHODS, WASTES, AIR BREATHING ENGINES

Subject Categories : Combat Vehicles

Distribution Statement : APPROVED FOR PUBLIC RELEASE