A Parametric Study of the Muzzle Blast from a 20mm Cannon

reportActive / Technical Report | Accession Number: ADA105531 | Open PDF

Abstract:

The muzzle flow properties of a 20mm cannon are measured for a range of launch velocities from 260 ms through 1000 ms. Sequential spark shadowgraphs are taken of the developing muzzle blast. Pressure surveys are made of the blast field over a range from 10 to 40 calibers from the muzzle. An idealized muzzle device is inserted in the flow and surface pressure distributions taken for a variety of geometries relative to the gun tube. Experimental results are compared with available theoretical and numerical models.

Author(s):
Schmidt, Edward M. ; Gion, Edmund J. ; Fansler, Kevin S.
Author Organization(s):
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
Descriptive Note:
Final rept.
Pagination:
0091

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
ARBRL-TR-02355
Project Number(s):
1L161102AH43
Monitor Series:
BRL
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_5_Command and Control; JCA_5.2_Understand; JCA_1.2.7_Experimentation; JCA_1_Force Support; JCA_5.3_Planning; JCA_6_Net Centric; JCA_1.2.5_Lessons Learned; JCA_1.2_Force Preparation
Modernization Areas:
Hypersonics
Communities of Interest:
Weapons Technologies
Descriptor(s):
*BLAST WAVES, *GUN MUZZLES, *MUZZLE BRAKES, MATHEMATICAL MODELS, GUN BARRELS, SURFACES, FLOW FIELDS, LAUNCHING, BLAST, SPARK SHADOWGRAPH PHOTOGRAPHY, SEQUENTIAL PHOTOGRAPHY, EXHAUST GASES, THREE DIMENSIONAL FLOW, GAS FLOW, PRESSURE DISTRIBUTION, ADAPTERS, WAVE PROPAGATION, FREE FIELD, PRESSURE MEASUREMENT, FIRING TESTS(ORDNANCE)
Field(s)/Group(s):
Guns, Explosions
Keyword(s):
*MUZZLE BLASTS, 20 MM GUNS, UNSTEADY FLOW, PROPELLANT GASES, ASH43, PE61102A
Report Date:
1981 Aug 01