CONDUCTIVE HEAT-TRANSFER RESISTANCE OF COMPOUND BARREL INTERFACE.
Abstract
This is a continuation of a heat-transfer study (Technical Report 69-121, 'Conductive Heat-Transfer Resistance of Compound Barrel Interface') to determine the effect of thermal multilayer interface resistance on gun barrel radial temperature distributions. Gun barrel specimens were constructed of interference fit, knurl fit, force fit, and of a special ZrO2 interface fabricated by a unique autoclaving technique. Steady-state heat-transfer experiments were then conducted to measure interface thermal resistance at various temperatures. Based on these measured interface resistances, calculations were conducted to determine radial barrel temperatures as a function of firing times. These calculations were obtained with the aid of a digital computer program in which an implicit difference-analog is utilized. Results of these experiments, as well as calculated radial barrel temperature distributions, are presented. Also, temperature data are given for a firing experiment in which a gun barrel with a ZrO2 interface was tested and the results indicated a significant reduction of the surface temperature. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1970
- Accession Number
- AD0708888
Entities
People
- Darrel M. Thomsen