Accession Number:

AD0255403

Title:

FUNCTIONING EFFECTS ON CARTRIDGE, 106-MM, HEP-T, M346A1, WITH SPACER AND SPACER RETAINER AT VARIOUS POSITIONS

Descriptive Note:

Corporate Author:

ABERDEEN PROVING GROUND MD

Personal Author(s):

Report Date:

1961-05-01

Pagination or Media Count:

1.0

Abstract:

A number of Cartridges, 106-mm, HEP-T, M346Al in field service storage were found to have the spacer retainer displaced, allowing the spacer to move forwrd on the primer tbe. An engineering investigation was conducted to determine the consequences of firing cartridges with the spacer and spacer retainer at various postions, and the effect of rough-handling tests on the displacement of the spcer and spacer retainer. The results of this test apply only to rounds assembled with the type of spacer reainer shown in Figure 1. The results of the firing phase indicated that under no conditions investigated was there a dangerous pressure level developed. Spacer reaines placed at known distances forward on the primer tube moved rearward toward the base of the cartridge case upon firing. Rough-handling test revealed a displacement of the spacer and spacer retainer of 14 to 12 inch. In the event this type of retainer is displaced, neither it nor the spacer are likely to be deposited in the barrel when the round is fred. If either should be deposited in the barrel it does not appear to be dangerous to fire a round without removing them. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE