Abstract:
An expandable ogive is disclosed which incorporates a plurality of sections (20, 22, 24) which move into an extended position. The ogive is locked in the extended position by mating tapered surfaces on the piston sections of an actuator (44) which are tapered at an angle of less than about 2.degree. relative to the center line axis of the missile or rocket. The mating surfaces lock sufficiently tightly to resist the aerodynamic loadings on the ogive during missile or rocket flight and therefore maintain the proper ogive configuration independent of the gas pressure in the actuator (44) which initially moves the ogive sections into the extended position.
Abstract:
A method and apparatus for providing a multidirectional clamping force to clamp selected materials together is disclosed and comprises a tube formed into a closed circular shape and formed of martensitic material and deformed in a first predetermined direction such that the cross-section of said tube is non-circular. An energetic material is loaded into the interior cavity of the tube. An ignition system is operatively positioned with respect to the tube and is capable of igniting the energetic material. Upon ignition of the energetic material, the tube is reconfigured to provide a clamping force in a predetermined direction to clamp the materials together.
Abstract:
A louvered window covering, such as a vertical or horizontal venetian blind, is provided with a thermal actuator to automatically rotate slats forming the louvered window covering between open and closed positions. The actuator includes at least one memory alloy spring that, when heated above a predetermined temperature, extends to engage and move a rack that drives a pinion gear. The pinion gear rotates, through a coupling mechanism, a rod extending the length of the blind. A second memory alloy spring may be installed to rotate the rod in the opposite direction. The rod intercouples the slats in a rewiner such that the rotation of the rod rotates the slats in unison between closed and open positions. The memory alloy spring may be heated with a current supplied to a controller in response to a predetermined environmental condition.
Abstract:
An apparatus for translating motive energy includes a rotor structure, having mutually spaced rotor members, adapted to react with fluids within the housing. In one embodiment, the rotor structure is rotationally driven by an external power plant for pumping fluids through a tangentially oriented outlet duct. In a second embodiment, the apparatus is driven by fluid under pressure which is conducted toward the rotor structure through an inlet aligned with peripheral portions of the rotor members, for rotationally driving the rotor structure. A variable geometry inlet control system is provided for controlling fluid flow in response to varying flow conditions and for directioning fluid flow to a portion of the rotor structure. The apparatus incorporates a structural configuration which permits its construction of carbonized composite materials, for operation at elevated temperatures.