Accession Number : AD0858986

Title :   Product Improvement Test of Cartridge, 81-mm, M374 with Modified Ignition - Propellant System and Reduced Bourrelet.

Descriptive Note : Final rept. 1 May-18 Jul 69,

Corporate Author : ABERDEEN PROVING GROUND MD MATERIEL TESTING DIRECTORATE

Personal Author(s) : Cheater, Harvey W.

Report Date : AUG 1969

Pagination or Media Count : 83

Abstract : A product improvement test was conducted on an 81-mm cartridge, M374, which mated a modified ignition system (XM285 ignition cartridge and small-hole boom) with waterproof (Celcon/silk) propellant bags. Various tests were conducted to determine if the modifications provided moisture protection without introducing undesirable side effects. A slight velocity degradation resulted when the test round was subjected to the rain test; however, no extremely short round (less than 80% range) occurred.

Descriptors :   *MORTAR AMMUNITION), (*HIGH EXPLOSIVE AMMUNITION, (*CARTRIDGES, HIGH EXPLOSIVE AMMUNITION), ROTATING BANDS, MORTARS, PROPELLING CHARGES, POWDER BAGS, MOISTUREPROOFING, INTERIOR BALLISTICS, VELOCITY, IGNITION, VIBRATION, SHOCK RESISTANCE, FIN STABILIZED AMMUNITION, EXTERIOR BALLISTICS.

Subject Categories : Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE