Plastic and nonmetallic article shaping or treating: processes – Explosive or propellant article shaping or treating
Patent
1996-11-07
1997-11-25
Nelson, Peter A.
Plastic and nonmetallic article shaping or treating: processes
Explosive or propellant article shaping or treating
149 199, 149 1991, 149 1992, C06B 2100, C06B 4510
Patent
active
056908687
ABSTRACT:
A multi-layer propellant and a method for making the same is provided, in ich the propellant has at least one slow burning formulation and at least one fast burning formulation, such that the ratio of these burning rates is at least 2:1. The propellant produces an impetus of at least 1300 Joules/gm. The preferred binder is a high energy oxetane thermoplastic elastomer. The preferred slow burning formulation employs RDX, while the preferred fast burning formulation employs CL-20. The two formulations are formed separately, such as in layers that are then fused, using the bonding strength of the binder. The shape may be any shape that is useful in munitions and may include one or many layers of each burning rate. Preferred shapes include a multi-layered propellant with one slow burning formulation on top and a bottom layer of the fast burning formulation. The layers may be formed from ribbons, discs, cones, truncated cones and partial spheres. The amount of binder in each formulation should be sufficient to provide a uniformly dispersed oxidizer throughout the layer. Preferred amounts of binder range from about five percent to about thirty percent by weight, based on the total weight of the propellant.
REFERENCES:
patent: 5460669 (1995-10-01), Willer et al.
patent: 5467714 (1995-11-01), Lund et al.
patent: 5468313 (1995-11-01), Wallace, II et al.
patent: 5500061 (1996-03-01), Warren et al.
patent: 5587553 (1996-12-01), Braithwaite et al.
patent: 5591936 (1997-01-01), Willer
Manning Thelma
Moy Sam
Prezelski Joseph P.
Strauss Bernard
Callaghan John E.
Nelson Peter A.
Sachs Michael C.
The United States of America as represented by the Secretary of
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