FUNCTIONING EFFECTS ON CARTRIDGE, 106-MM, HEP-T, M346A1, WITH SPACER AND SPACER RETAINER AT VARIOUS POSITIONS
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 1/4 to 1/2 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)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1961
- Accession Number
- AD0255403
Entities
People
- P.d. Alston