Accession Number:

ADA155066

Title:

Analysis of Armoured Personnel Carrier Heat Loss.

Descriptive Note:

Technical note,

Corporate Author:

DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s):

Report Date:

1984-12-01

Pagination or Media Count:

67.0

Abstract:

This report describes the heating properties of the Canadian Forces Armoured Personnel Carrier APC. In the theoretical analysis, the APC is modelled as a box, having various insulating covers on the surfaces. The rate of heat transfer from the APC is then estimated for each insulation configuration using empirical heat transfer coefficients and measured thermal conductances. All assumptions, equations and physical data used in the analysis are presented as is a listing of the FORTRAN computer program which was used to solve the heat transfer equations. Thus, the reader may use this report as a guide to performing the heat transfer analyses for similar problems. Field measurements of internal air temperature and of heat flow-rates were made using two APCs in various insulating configurations. The measured heat loss from an uninsulated APC was in close agreement to the heat loss predicted by the theoretical analysis. However, the measured heat loss from an APC insulated with a covering developed by the Defense Research Establishment Suffield was found to be significantly greater than that predicted by the theoretical analysis. Theories are advanced on possible sources of error and discrepancy between the model predictions and the measured values of temperature and heat flow. Heat loss due to ventilation is also examined briefly.

Subject Categories:

  • Combat Vehicles
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE