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M113A1/M113A1E1 Improved Cooling System
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1979 by SAE International in United States
Annotation ability available
U.S. Army studies concluded that engine problems in the M113A1 Family of Vehicles resulted primarily from cooling system deficiencies. This conclusion led to the development of an Improved Cooling System (ICS) which provides approximately 15°F coolant temperature reduction under full load, low speed/high tractive effort conditions; eliminates the collection of the oil and dirt mixture which packs on the radiator heat transfer surfaces; provides a negative pressure engine compartment for CBR application and reduction of exhaust fume leakage to personnel compartment; and provides increased drawdown capacity.
In addition, the basic configuration of the ICS has been designed to be compatible with product-improved/up-powered versions of the M113A1 such as the M113A1E1 currently under development by the U.S. Army.
Basically, the ICS interchanges positions of the fan and radiator on the current production M113A1, with the air flow direction remaining the same. “System analysis” studies were performed using both FMC and TARADCOM cooling system computer programs to “optimize” the design of the system. Generalized work done jointly by FMC and TARADCOM in tracked vehicle cooling system design was applied.
As the result of successful testing the M113A1/ICS is planned for production incorporation mid-1979.
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CitationSamuel, A., Loss, A., and Latson, D., "M113A1/M113A1E1 Improved Cooling System," SAE Technical Paper 790412, 1979, https://doi.org/10.4271/790412.
- Samuel Alan J. Loss Alan M. TARADCOM Report #12213 3 Dec 76
- Healey Clarence L. Losher Dennis W. FMC Technical Report #3246 16 Feb 78
- Samuel Alan J. TARADCOM Report #12330 23 Sept 77