Muzzle Blast Measurements on Howitzer, 105mm, M2A2E2 with Muzzle Brake No. 8
Abstract
Measurements of muzzle blast in the crew area of the 105mm Howitzer, M2A2E2, with Muzzle Brake No. 8, were made primarily to determine the peak overpressures produced. Measures of positive impulse and duration of positive phase were also made. The howitzer was fired at elevations of 1 degree - 14 minutes, 35 degrees - 0 minutes, and 70 degrees - 0 minutes with 2 propelling charges: Charge Zone No. 10 (7.22 ounces of T34 and 3.75 pounds of M17) and 115 per cent of maximum rated pressure (7.22 ounces of T34 and 4.00 pounds of M17). Some of the overpressures measured were high enough to rupture unprotected human eardrums. It is recommended that attempts be made to lower the peak overpressure below 4 psi. If this criterion is not met, ear protection should be mandatory.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1960
- Accession Number
- AD0243031
Entities
People
- Howard H. Holland Jr.
Organizations
- United States Army Materiel Command