Automated M9 Propellant Quantity Gage.
Abstract
This report describes the construction and operation of the Automated M9 Propellant Quantity Gage (AMPQG). The purpose of the AMPQG is to measure the quantity of propellant powder sealed within the 40 mm cartridge cases at a production rate of one per second. The gage uses a radioactive source of Americium 241, a scintillation detector and digital electronics to measure the propellant by a backscatter technique. The accept/reject decision level is set at 80% propellant fill, but due to te statistical nature of the signal source, cartridges with more or less than 80% propellant are accepted or rejected on a probability basis. The requirements for the AMPQG are: (1) Not more than one cartridge can be accepted out of one million tested at 55% fill. (2) Not more than one cartridge rejected out of five hundred tested at 100% fill. The gage was acceptance-tested at Milan Army Ammunition Plant in March 1976. The test results and recommendations for future gage construction are presented in this report. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 1976
- Accession Number
- ADA039106
Entities
People
- D. W. Blincow
- J. H. Mccormick
- S. C. Dominey