Abstract: The present invention is directed to a body temperature controlling system comprising at least one member receiving a flow of gas from at least one blower in communication with said at least one member, said at least one member directing said flow of gas onto a wearer thereof.

Abstract: This invention relates to fabrication of tube bank style heat exchangers and similar assemblies. It provides a novel device and a method for presenting and feeding multiple relatively flexible tubes in a predetermined spaced apart manner, and subsequently threading them through corresponding holes in tube-sheets, baffles or similar components during fabrication of the core structure, for example a heat exchanger core.

Abstract: An oxidizer package for use in a solid fuel propellant system. The oxidizer package comprises a solid oxidizer in the form of discrete pellets of predetermined geometric shape. The pellets are arranged in an array with spaces amongst the pellets. A holder is provided for maintaining the pellets in the array for receipt of a binder introduced to spaces amongst the array of pellets. Preferred propellants include hydrazinium nitroformate and nitronium perchlorate. This arrangement for the pellets can achieve loadings as high as 85% by weight for the pellets.

Abstract: An oxidizer package for use in a solid fuel propellant system. The oxidizer package comprises a solid oxidizer in the form of discrete pellets of predetermined geometric shape. The pellets are arranged in an array with spaces amongst the pellets. A holder is provided for maintaining the pellets in the array for receipt of a binder introduced to spaces amongst the array of pellets. Preferred propellants include hydrazinium nitroformate and nitronium perchlorate. This arrangement for the pellets can achieve loadings as high as 85% by weight for the pellets.

Abstract: A hybrid propulsion system comprises a liquid fuel section and a solid fuel section. The liquid fuel section contains an aqueous solution of hydrogen peroxide. An injector system is located between the liquid fuel section and the solid fuel section. The injector system injects a stream of hydrogen peroxide or a decomposed stream of hydrogen peroxide at elevated temperatures into the solid fuel section to effect combustion of the fuel grain in the solid fuel section.