Abstract:
A wind turbine energy conversion device that can take advantage of the higher speed and more persistent winds at higher altitudes is hereinafter disclosed. The wind turbine energy conversion device includes an unmanned aerial vehicle (UAV) connected to one end of a tether (which may include multiple shorter tethers), the other end being connected to a terrestrial anchorage point. The UAV flies at altitudes where wind speeds can reach 40 mph or higher. The UAV comprises a flying wing with one or more trailing wind power turbines and flies airborne maneuvers designed to increase relative wind speed up to about four times the true wind speed.
Abstract:
A self-aligning poppet valve assembly is disclosed. The self-aligning poppet valve assembly is disposed within the inner wall of a conduit and comprises a movable sealing member having a poppet guide, a seat portion comprising an inner receptacle adapted to receive the moveable sealing member, a sealing flange adapted to contact the moveable sealing member, thereby selectively inhibiting fluid flow past the moveable sealing member, and a guide receiving portion coupled the poppet guide, and a sealing device surrounding the seat portion and adapted to maintain a seal between the seat portion and the inner wall of the conduit.
Abstract:
A charging system for an unmanned underwater vehicle (UUV) is disposed within a submerged docking station. The charging system includes a battery, a fuel cell, a fuel source, and a charge controller. The battery supplies electrical power to an electrical distribution bus in the docking station. The charge controller monitors the charge state of the battery and, when needed, activates the fuel cell to recharge the battery. The charge controller also activates the fuel cell when a UUV is docked in the docking station for recharging of its power plant.
Abstract:
A bearing assembly is provided that has an inner and outer ring, a plurality of balls therebetween, and a side shield. The rings each have an inner peripheral surface, an outer peripheral surface and first and second sides extending therebetween. The outer ring is concentric to the inner ring, and includes a fracture extending between the inner and outer peripheral surfaces and a groove formed between the outer ring first side and outer peripheral surface. The side shield includes a retainer section coupled to a shield section. The retainer section couples to one of the outer ring first and second sides and the annular flange extends from the retainer section and is disposed within the groove to clamp the outer ring fracture. The shield section extends from the retainer section at least partially to the inner ring first side without contacting the inner ring first side.
Abstract:
A charging system for an unmanned underwater vehicle (UUV) is disposed within a submerged docking station. The charging system includes a battery, one or more generators, and a charge controller. The battery supplies electrical power to an electrical distribution bus in the docking station. The charge controller monitors the charge state of the battery and, when needed, activates one or more of the generators to recharge the battery. The charge controller also activates one or more of the generators when a UUV is docked in the docking station for recharging of its power plant.
Abstract:
A containment vessel used to enclose an energy storage flywheel system during certification testing of the energy storage flywheel system includes a plurality of concentrically disposed vessels. One or more intermediate shields are freely disposed within an outer shield, and an inner shield is freely disposed within the intermediate shields. The inner shield includes a deflector rim disposed proximate one of its ends that is configured to absorb the energy of ejected material, in the highly unlikely event of a flywheel failure during testing.
Abstract:
A flight control actuation system comprises a controller, electromechanical actuator and a pneumatic actuator. During normal operation, only the electromechanical actuator is needed to operate a flight control surface. When the electromechanical actuator load level exceeds 40 amps positive, the controller activates the pneumatic actuator to offset electromechanical actuator loads to assist the manipulation of flight control surfaces. The assistance from the pneumatic load assist actuator enables the use of an electromechanical actuator that is smaller in size and mass, requires less power, needs less cooling processes, achieves high output forces and adapts to electrical current variations. The flight control actuation system is adapted for aircraft, spacecraft, missiles, and other flight vehicles, especially flight vehicles that are large in size and travel at high velocities.
Abstract:
A system and method for determining the input force supplied to a user interface by a user is provided. A passive feedback mechanism is coupled to the user interface, and a change in position of the passive feedback mechanism is sensed. The input force supplied by the user to the user interface is then calculated from the sensed change in position.
Abstract:
An apparatus is provided for a shaft coupling device. The shaft coupling device comprises first and second portions adapted to be coupled together, the first and second portions having a cavity when formed, the cavity adapted to receive two shaft ends, at least one interior wall of the cavity having a frustrum-shaped surface, and the two shaft ends each having at least one spherical-shaped surface.
Abstract:
A position determination circuit uses the commutation sensor of a brushless DC motor to determine the position of an actuator and/or actuated component 125. The commutation sensor supplies a rotational position signal representative of the rotational position of the motor to a pulse generator. The pulse generator generates a pulse each time the rotational position signal represents a complete revolution of the brushless DC motor. The generated pulses are supplied to an integrator circuit, which selectively supplies a position signal having a voltage magnitude representative of the position of the actuator and/or component.