| 摘要 |
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.
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