SELF ADJUSTING OBTURATOR

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$49,448.00
Award Year:
1993
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
20325
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Advanced Technology Materials
14900 Sweitzer Lane, Laurel, MD, 20707
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Valmore F Devost
(301) 498-8200
Business Contact:
() -
Research Institution:
n/a
Abstract
The performance of guided projectiles fired in smooth-bore Navy guns is progressively degraded by barrel wear: once high temperature propellant gasses start to flow (jet) between the wall of the gun barrel and the body of the projectile, barrel wear is accelerated and propellant efficiency drops off progressibvely degrading gun accuracy. Advanced Technology and Research Corporation (ATR) proposes that the research and experimental work conducted jountly by Codes EPA and 702 of NSWC (1974) on nonmetallic 5"/54 gun projectile rotating bands be reinstated to evaluate the same materials for use as obturators for smooth-bore, 5-inch guided projectiles. Mr. DeVost of ATR was the NSWC/WL senior engineer assigned to the EPA rotating band program. ATR will conduct research jon related information obrained in the mid-1970s by Codes EPA and EPM. Also, information will be researched on modern plastics. After a selection is made of candidate obturator materials, samples will be fabricated and tested for closure plug impact, setback shock and obturator integrity. Shock tests will be conducted on the ATR, mega g Mechanical Shock Sensor Test Apparatus. Scale-model studies on obturators will be conducted in a shot gun: obturators will be fired behind standard shot gun slugs in new and simulated-worn barrels; blowby pressures will be monitored at muzzle break.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government