Accession Number:

AD0256464

Title:

PRELIMINARY HEAT-TRANSFER EVALUATION OF MORTAR, 81-MM, T227E2 MODIFIED WITH COPPER COATING

Descriptive Note:

Corporate Author:

ABERDEEN PROVING GROUND MD

Personal Author(s):

Report Date:

1961-05-01

Pagination or Media Count:

1.0

Abstract:

This test was conducted to obtain a preliminary evaluation of the firing capabilities of an 81mm mortar, T227E2, modified with a heat-sink materiel copper applied to the exterior of the barrel. Firings consisted of a proof test, and limited rapid-rate-of-fire tests using the 81mm, M362 cartridge at charges 6 and 8. It was indicated from the limited test data that the T227E2 mortar barrel modified with a copper coating applied to its exterior did to some extent permit an increase in the number of rounds which could be rapid-fired before attaining the temperature limitation established for the barrel. As a result of the effects from firing, considerable loosening of the copper coating from the mortar barrel and numerous cracks were evident. Since the T227E2 mortar barrel modified with copper coating and the experimental XM-1 barrel previously tested exhibited approximately the same heat-transfer characteristics, it is recommended that future studies be directed towards developing the XM barrel in preference to a barrel with copper coating. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE