Rockets charge

History. The cast double-base process was developed under U.S. Government auspices during World War II, the initial work being done by Kincaid and Shuey (7). The process filled a need for rocket charges significantly larger than those conveniently made by the then existing extrusion processes. 

THE TECHNOLOGY OF THE MANUFACTURE OF ROCKET CHARGES CONTA NIG COMPOSITE PROPELLANTS WITH THIOKOL... 

It is characteristic of the technology of the manufacture of rocket charges containing composite propellants with thiokol that the semi-liquid mixture is poured directly into the rocket chamber lined from within with an insulating layer to which the charge adheres tightly ( case-bonded charge). This is a very cheap and rapid method of manufacture. 

According to Boynton and Schowengardt [54] the ultimate tensile strength of double base rocket charges should be 120 lb/in2 and elongation ca. 30%. The propellant which gives these properties contains less binder than the maximum imposed by the casting powder process, but it can be produced by the slurry process. 

The technology of the manufacture of rocket charges containing composite propellants with ihiokol... 

Steadily increasing fines for non-compliance with laws and rocketing charges for dumping waste make the first alternative highly risky. The difficulty in following the second option was expressed by G.V. Cox of the Chemical Manufacturers Association [25] ... 

A solid propellant is a mechanical (heterogeneous) or a chemical (homogeneous, or colloidal) mixture of solid-state fuel and oxidizer-rich chemicals. Specially-formed charges of solid propellant (grains) arc placed in the combustion chamber of the solid rocket motor (SRM) at a production facility. Once assembled, the engine does not require additional maintenance, making it simple, reliable and easy to use. 

PIAT. Acronym for projector infantry antitank. A Brit WWII weapon based on the shaped charge effect. It fired a rocket-propelled charge weighing 3 lbs which could pierce 4-tnch armor plate Ref J. Quick, Dictionary of Weapons and Military Terms , McGraw Hill, NY (1973), 349... 

Polymers which give mouldable propellants are mixed with the oxidiser in a similar manner, but the product is usually worked mechanically between rolls and evacuated to remove air bubbles. The powder is then moulded by pressure into the metal casing. Alternatively, such plastics can give a propellant which can be extruded into charges which are afterwards cut and machined to suitable shape. The Rocket Propulsion Establishment at Westcott has used ammonium perchlorate and polyisobutene to produce a propellant of putty-like consistency. 

This simple item provides perhaps the best and easiest method of firing a charge electrically by means of a pull wire. It may be rigged so the target trips the wire or it may be controlled by the operator from a safe distance. It is an excellent device to use with bazooka rockets against trucks, tanks, or locomotives. 

A familiar military use of this principle is the 3.5 inch antitank rocket, or bazooka round. The explosive charge in the head of the rocket has a conical cavity in the forward end. When the charge is detonated against the side of a tank, the shock waves emerging from the conical cavity are focused on one spot where they will penetrate several inches of tough steel. 

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