Accession Number:

ADA586742

Title:

A Thermal Performance Study of the 155mm XM297 Actively Cooled Barrel

Descriptive Note:

Final rept.

Corporate Author:

ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET LABS

Personal Author(s):

Report Date:

2006-11-01

Pagination or Media Count:

13.0

Abstract:

The Crusader Self Propelled Howitzer will employ an actively cooled 155mm cannon to meet its high rate of fire performance requirements. The actively cooled cannon includes both integral mid-wall cooling of the barrels chamber region, and outer surface cooling for the remaining length of the barrel. A thermal study was conducted to better understand the thermal performance characteristics of the actively cooled 155mm XM297 barrel under severe firing conditions. Thermal calculations were made using the FDHEAT gun tube heat transfer model which was modified to include an cooling capability. The FDHEAT program models the effects of the barrel heating due to round firing, radial and axial conduction within the barrel wall, convective and radiative cooling, and heat removal by the active cooling system. The study identified an optimum radiator size for the cannon and also showed that, compared to an un-cooled barrel, an actively cooled cannon has superior performance characteristics for firing engagements involving multiple, high rate of fire missions.

Subject Categories:

  • Guns
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE