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Pyrotechnic launch tube

a launch tube and pyrotechnic technology, applied in the direction of barrels, weapons, weapon components, etc., can solve the problem of breaking the adhesive bond between the bottom and the inside wall of the tub

Inactive Publication Date: 2002-02-07
SEE SAMUEL A
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the force from the explosion of pyrotechnics inside the tube can break the adhesive bond between the bottom and the inside wall of the tube.

Method used

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  • Pyrotechnic launch tube
  • Pyrotechnic launch tube

Examples

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Embodiment Construction

[0012] FIG. 1 shows a fiberglass reinforced polymer (FRP) pyrotechnic launch tube 10 in cross section according to the present invention. Launch tube 10 comprises a cylindrical tube 12, which is formed by conventional means of wrapping resin-coated strands of fiberglass around a mandrel; curing the resin; and removing the mandrel. Tube 12 has an upper end 14, a lower end 16 and an inside wall 18. Inside wall 18 has a cylindrical surface 20. A groove 22 is formed in inner wall 18 near lower end 16.

[0013] Groove 22 is illustrated as formed within a circumference of tube 12 evenly spaced from lower end 16, but could be formed such that it is unevenly spaced from lower end 16 if desired. Groove 22 can be cut into inside wall 18 or can be formed concurrently with the formation of tube 12. Groove 22 is preferably, but not necessarily, continuous, as it could be a series of discontinuous slots.

[0014] A bottom member 30 is engaged in groove 22. In one embodiment, bottom member 30 is a flexi...

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PUM

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Abstract

A pyrotechnic launch tube made using fiberglass reinforced polymer (FRP) includes a cylindrical FRP tube having an inside wall, where the inside wall has a circumferential groove near a lower end of the tube. A bottom member made of FRP is molded for engagement with the tube at the groove. After forming the tube and the groove, a mold having a concave surface is placed inside the tube adjacent to the groove, and resin-coated fiberglass matting is laid on the mold. A fibrous material is placed over the fiberglass matting and a nonporous bag seals the fiberglass matting. A vacuum is drawn in the bag, and atmospheric air pressure compresses the fiberglass matting, forcing it into the groove. A counter mold can be used instead of vacuum setting to compress the fiberglass matting. The bottom member has a convex surface, and the convex surface and the inside wall of the tube define a chamber for receiving pyrotechnics.

Description

[0001] Not applicable. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH[0002] Not applicable.[0003] 1. Field of the Invention[0004] This invention pertains to pyrotechnic launch tubes, and particularly to a pyrotechnic launch tube made using fiberglass reinforced polymer.[0005] 2. Description of the Related Art[0006] A fiberglass reinforced polymer (FRP) pyrotechnic launch tube has been made, where a bottom is formed by bonding or gluing a plug inside the tube. However, the force from the explosion of pyrotechnics inside the tube can break the adhesive bond between the bottom and the inside wall of the tube. The pyrotechnic launch tube must then be repaired or replaced.[0007] A method has been devised for making a fiberglass reinforced polymer (FRP) pyrotechnic launch tube that can better withstand the explosive force of the pyrotechnics. An FRP tube is made, and a groove is formed about an inner circumference of the tube near one end. A bottom piece is engaged with the groove so th...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F41A21/02
CPCF41A21/02
Inventor SEE, SAMUEL A.
Owner SEE SAMUEL A