Propellant grains and process for the production thereof

Details Propellant grains and process for the production thereof Propellant grains and process for the production thereof

1995-08-15

1997-04-08

Nelson, Peter A.

Plastic and nonmetallic article shaping or treating: processes

Explosive or propellant article shaping or treating

Extrusion to form sheet or rod

264 31, 102288, 102289, 86 2012, 86 21, C06B 2100, F42B 300

Patent

active

056190735

ABSTRACT:
A batch process produces unitary grains of propellant material. A constituent mixture of the material is prepared by mixing constituents while heating to at least a predetermined pouring temperature within a permissible temperature range. The constituent mixture is poured into a mold, while vibrating it to avoid voids or interfaces within the material, to cast a block of propellant. The cast block is cured for a predetermined period resulting in a cured, cast block of semirigid yet plasticly deformable material. A hydraulic press with a ram carrying a tubular cutting die is positioned, as by transferring the mold without its bottom to the press bed, for permitting grains to be cut by movement of the press ram by forcing the cutting die into the cast block to cut from the block a grain of the propellant material, then extracting the grain for further use. The cutting cycle is repeated until the cast block has yielded a satisfactory number of grains. Preferably, inert dowel plugs are inserted into each cut cavity after the grain is extracted to maintain dimensional stability of the block for successive cutting cycles. A propellant grain produced by such process is of unexpectedly high quality.

REFERENCES:
patent: 3396215 (1968-08-01), Hittinger
patent: 4050347 (1977-09-01), Adelman et al.
patent: 4585600 (1986-04-01), Rollyson et al.
patent: 5349892 (1994-09-01), Taylor et al.

Affiliated with

Also associated with

Rating

Propellant grains and process for the production thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Propellant grains and process for the production thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Propellant grains and process for the production thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2399343