Detailed Thermal Response of a 155-mm, M203 Propelling Charge during Temperature Conditioning, Handling, and Loading
Abstract
Extreme temperature conditioning of large-caliber propelling charges for a determination of temperature coefficients is a very important phase of charge design evaluation. Ambient conditions encountered during transit from conditioning chambers to gun sites have a profound effect on temperatures of conditioned charges. The M203, Zone 8 Propelling Charge for the Army 155-mm Howitzer contains a complex ignition train whose vulnerability to those ambient conditions must also be considered. Two M203 charges were instrumented with thermocouples located at ten positions and subjected to extreme temperature conditioning. Temperatures at these positions were monitored during conditioning and exposure to new environments. A 24-hour period for conditioning to extreme temperatures was shown to be sufficient, in agreement with past results as well as with current testing procedures. However, exposure to a new environment (e.g. , removal from the conditioning box) leads to rapid changes in charge temperatures, particularly at the surface of the charge. The influence of this response on performance is unknown but potentially important.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1981
- Accession Number
- ADA105319
Entities
People
- Arthur A. Koszoru
- John R. Kelso
Organizations
- Ballistic Research Laboratory