Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 27
Book Description
COMBUSTIBLE AMMUNITION FOR SMALL ARMS. 1. DEVELOPMENT OF SELF-CONTAINED PROPELLANT CHARGE.
Author: COMBUSTIBLE AMMUNITION FOR SMALL ARMS. 2. DEVELOPMENT OF A COMBUSTIBLE SMALL ARMS CARTRIDGE.
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 45
Book Description
Combustible 7.62 mm ammunition, consisting of a molded integral propellant charge and a dual primer, was developed. When fired in a self-obturating 7.62 mm test weapon over the temperature range -65 to 160 deg F, this cartridge yielded mean ballistic performance similar to that obtained with the standard M59 metal cased cartridge. Velocity reproducibility, however, was poorer than that obtain d with the standard cartridge. Accuracy was slightly less with the combustible ammunition. The combustible dual primer, which consisted of a percussion sensitive cap and a pellet of standard styphnate primer mixture, provided adequate and reproducible ignition. Molded charges had a considerable degree of inherent moisture resistance. Water immersion tests revealed no substantial changes in velocity or pressure after ten months exposure. Firings were conducted with molded charges coated with various materials to determine the degree of consumption of the coatings. All coatings were consumed.
16th JANNAF Combustion Meeting, Naval Postgraduate School, Monterey, California, September 10-14, 1979: DDT and gun propellants (unclassified
Author: COMBUSTIBLE AMMUNITION FOR SMALL ARMS. 4. DEVELOPMENT OF IMPROVED OBTURATOR DEVICES FOR CASELESS AMMUNITION.
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 29
Book Description
An obturator, reusable for approximately 60 firings of 7.62 mm caseless ammunition, was designed, fabricated, and evaluated. This obturator consisted of two metal split rings with a neoprene O-ring positioned between them. A 7.62 mm caseless test weapon (Model 4) was designed and fabricated for this investigation, and a Springfield 1903 rifle was similarly modified for shoulder firing 7.62 mm caseless ammunition before the U.S. Army Infantry Board during June 1962. A combination obturator/firing pin projectile (designated 'Bulpin') was designed, fabricated, and evaluated for caliber .30 caseless solid propellant ammunition. Two such Bulpin projectiles, one in front of a bore-size caseless charge containing a combustible primer and one behind it for ignition and obturation, provided a solid propellant caseless system which used a new firing pin and seal for each firing. After each firing, the rear projectile was pushed forward by the next Bulpin round for use as the next projectile. There are indications that, in caseless solid propellant ammunition, the increased ratio of propellant charge length to propellant charge diameter results in lower projectile velocity and higher peak pressure and that increased molding pressure in the forming of the propellant results in higher velocity and higher peak pressure.
Infantry
Author: U.S. Government Research Reports
Author: Technical Abstract Bulletin
Author: Bibliography of Scientific and Industrial Reports
Author: Black and Smokeless Powders
Author: National Research CouncilPublisher: National Academies Press
ISBN: 0309062462
Category : Political Science
Languages : en
Pages : 179
Book Description
Some 600 pipe bomb explosions have occurred annually in the United States during the past several years. How can technology help protect the public from these homemade devices? This book, a response to a Congressional mandate, focuses on ways to improve public safety by preventing bombings involving smokeless or black powders and apprehending the makers of the explosive devices. It examines technologies used for detection of explosive devices before they explodeâ€"including the possible addition of marking agents to the powdersâ€"and technologies used in criminal investigations for identification of these powdersâ€"including the possible addition of taggants to the powdersâ€"in the context of current technical capabilities. The book offers general conclusions and recommendations about the detection of devices containing smokeless and black powders and the feasibility of identifying makers of the devices from recovered powder or residue. It also makes specific recommendations about marking and tagging technologies. This volume follows the work reported in Containing the Threat from Illegal Bombings (NRC 1998), which studied similar issues for bombings that utilize high explosives.
Alternatives for the Demilitarization of Conventional Munitions
Author: National Academies of Sciences, Engineering, and MedicinePublisher: National Academies Press
ISBN: 0309477352
Category : Technology & Engineering
Languages : en
Pages : 133
Book Description
The U.S. military has a stockpile of approximately 400,000 tons of excess, obsolete, or unserviceable munitions. About 60,000 tons are added to the stockpile each year. Munitions include projectiles, bombs, rockets, landmines, and missiles. Open burning/open detonation (OB/OD) of these munitions has been a common disposal practice for decades, although it has decreased significantly since 2011. OB/OD is relatively quick, procedurally straightforward, and inexpensive. However, the downside of OB and OD is that they release contaminants from the operation directly into the environment. Over time, a number of technology alternatives to OB/OD have become available and more are in research and development. Alternative technologies generally involve some type of contained destruction of the energetic materials, including contained burning or contained detonation as well as contained methods that forego combustion or detonation. Alternatives for the Demilitarization of Conventional Munitions reviews the current conventional munitions demilitarization stockpile and analyzes existing and emerging disposal, treatment, and reuse technologies. This report identifies and evaluates any barriers to full-scale deployment of alternatives to OB/OD or non-closed loop incineration/combustion, and provides recommendations to overcome such barriers.