Abstract:
A hinge includes internal on-axis stopping mechanisms that cause the hinge to shear and break at an on-axis weakened region of the hinge when rotation of the hinge reaches a predetermined angle with a specified torsional load. The on-axis configuration is compact, has minimal impact on the outer mold line (OML) of the object to which it is mounted both pre and post detachment and allows for accurate tailoring of the torsional load that will detach the hinge.
Abstract:
An actively-cooled heat shield system includes a heat shield, a tank, a pump, a heat exchanger, and a turbine. The heat shield defines a windward side of a vehicle. The tank stores a coolant. The pump receives the coolant from the tank and outputs a pressurized coolant. The heat exchanger is integrally connected with the heat shield. The heat exchanger receives the pressurized coolant from the pump, transfers heat from the heat shield to the pressurized coolant to generate a heated fluid, and outputs the heated fluid. The turbine includes an inlet, a shaft, and an outlet. The inlet receives the heated fluid output from the heat exchanger. The shaft is coupled to the pump and includes turbine blades. The shaft rotates and powers the pump when the heated fluid received from the heat exchanger acts on the turbine blades. The outlet outputs the heated fluid.
Abstract:
A multi-hydrogen bomb warhead (5) preferably having a plurality of bombs (3) located behind a door (2) of a nose cone (1) of the warhead (5). A plurality of decoys (4) may be used in conjunction with the bombs (3). The bombs (3) and decoys (4) are spring-ejected from the nose cone (1) through the doors (2). However, the bomb (3) may be transported via missile or via alternative transportation systems, such as the back of a pick-up truck (6).
Abstract:
A method for improving the thermal barrier properties of silicone resin/glass fibercomposites. Composites comprising a layer of polysiloxane (silicone resin) matrixwith a glass or quartz fiber reinforcement embedded in such matrix and an organic polymeric layer were subjected to multi-cycle heat treatment, preferably with quartzlamps. The polysiloxane layer was pre-coated with graphite dispersion in order to ensure acceptable optical receptivity of the polysiloxane layer. As a result, the silicone resin was converted into a thick porous layer of silicone dioxide, the latterhaving the improved thermal barrier properties.
Abstract:
An aerial vehicle includes a body and an antenna assembly mounted to the body. The antenna assembly includes a fairing component comprising a hollow body, a conductive coating formed on at least an inner surface of the fairing component, a plurality of antenna elements formed in the conductive coating, each antenna element including a first slot line defining a first transmission line and a second slot line defining a second transmission line, an insulator sleeve disposed within the fairing component, wherein an outer surface of the insulator sleeve at least substantially matches an inner surface of the fairing component, and a plurality of cable assemblies operably coupled to the plurality of antenna elements, wherein each cable assembly is coupled to a respective antenna element.
Abstract:
A vehicle (10), such as a missile, is disclosed. The vehicle (10)includes an optically transparent dome (20,120,220,320), a vehicle body (30,130,230,330), and a brazed joint (40,140) directly coupling the dome (20,120,220,320) to the vehicle body (30,130,230,330). The dome (20,120,220,320) is formed of a Nanocomposite Optical Ceramic (NCOC) material comprising two or more different types of nanograins dispersed in one another. Each nanograin type has a coefficient of thermal expansion (CTE), and an aggregate CTE of the NCOC material is based on the CTE of each nanograin type.
Abstract:
L'invention concerne un dispositif de protection contre la foudre (200) destiné à être posé sur une structure (100) à protéger et comprenant : un revêtement de surface comprenant au moins une couche de peinture conductrice (202), une pluralité d'éléments électriquement conducteurs (204) disposés de manière espacée sur la structure, lesdits éléments étant en contact avec la couche de peinture conductrice (202), un revêtement de protection (205) disposé sur le revêtement de surface et comprenant un matériau thermiquement isolant et électriquement conducteur, le revêtement de protection (205) recouvrant partiellement les éléments électriquement conducteurs (204).
Abstract:
A smart fuze system (12) includes a radome (60) used to hold a replaceable smart fuze module (24) in place. An internally-threaded collar (66) screws onto threads on the main body (42) of the smart fuze system. Pressure from the radome presses the smart fuze module against electrical connections (48) in the main body. The smart fuze module may thereby be held in place without potting material, allowing different types of fuzes to be swapped into place. The different types of fuzes may include a type that communicates height of burst (HOB) information a type that communicates telemetry, and a type that communicates both HOB and telemetry information.
Abstract:
A heat conducting device for providing a thermal path between a circuit board and a missile airframe includes a thermal plane that is adapted to receive a circuit board and a collar that encompasses at least a portion of the thermal plane. The collar has a first position that disengages the heat conducting device from at least a portion of the airframe and a second position that engages the heat conducting device with at least a portion of the airframe to provide a thermal path between the circuit board and the airframe.
Abstract:
A dome assembly (50) adapted for use with a missile (32) having a longitudinal axis (42) parallel to a thrust vector thereof. The inventive dome (50) includes a sapphire crystal (30) having a crystallographic structure that includes positive n-planes (12), positive r-planes (14) and a c-plane (16). A surface around a missile sensor provides a place for mounting the crystal (30, 50) such that one of said positive r-planes faces leeward with respect to wind flow (36) that impinges on said missile (32) during missile flight. The projection of one of the positive r-plane normals onto the wind flow vector (36) points aft. By design at nominal conditions, an r-plane (14) is approximately bisected by a plane formed by the normal of the c-plane (16) and a wind flow vector (36). In the illustrative embodiment, the dome assembly (50) includes an x-ray device for locating the r-planes within the sensor dome (50). A turntable (not shown) orients the sensor dome (50) so that a first r-plane (14) faces leeward of impinging air flow (36). An r-plane normal (38) of a second r-plane forms an angle of approximately 60 degrees with respect to impinging airflow (36). The turntable includes a motor (not shown) for strategically orienting the lattice planes (12, 14, 16) of the dome (50) so as to maximize the strength of the dome (50) with respect to applied stresses.