Erosion in 81MM Mortar Tubes.
Abstract
A laboratory erosion tester has been designed and developed for predicting the service performance of protective coating materials in the bores of mortar systems using rounds with tail fins. Due to the use of newly designed ammunition, the service life of 81MM mortar tubes has been reduced to approximately one third of its original life as the result of the formation of three rings on annular groove erosion formed in the bore. Preliminary efforts to apply wear resistant bore coatings and test fire them in the field have been extremely costly and time consuming because of the large number of rounds required (approximately 7500). The laboratory erosion tester has been designed to ignite the actual tail fin assembly (which causes the erosion) in a chamber which holds eight test specimens to be evaluated at the same time. The erosion rate of the test material can be increased so that less rounds are required, by merely reducing the distance of the jet stream and moving the specimens closer to the tail fin assembly which upon ignition, radially discharges the mixture of hot gases and associated burning particles onto the specimen surface.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1977
- Accession Number
- ADA044260
Entities
People
- V. Peter Greco
Organizations
- United States Army Armament Research, Development and Engineering Center