摘要:
A pressure container (70) for storing hydrogen gas (26) under pressure for a fuel cell engine. The container (70) includes an outer support layer (12) and a thermoplastic liner (14). An adapter (18) is provided in the outer layer (12) and the liner (14) to allow fill gas (20) to fill the container (70) under pressure. A fill vessel (72) is provided within the liner (14) and is sealed and thermally coupled to the adapter (18). The fill gas (20) is confined within a gap (78) between an outer surface of the fill vessel (72) and the liner (14) so that the temperature of the liner (14) is not significantly increased during the fill process. An opening (82) is provided in the fill vessel (72) so that the fill gas (20) forces the contained gas (26) within the container (70) into the fill vessel (72) through the opening (82).
摘要:
A motor with a variable speed controller is used to operate a hose reel for connecting a fuel source or decontaminant on a tanker plane to a fuel tank or other receptor on an unmanned vehicle. The hose reel is controlled to feed the fuel or other liquid through the hose and a drogue to a receiving probe on the unmanned vehicle and is also controlled to maintain the drogue in proper position. This end result is achieved by means of a controlling transponder on the unmanned vehicle which receives radio control signals from a communicating transponder on the tanker. A microcomputer processes the received control signals which are then fed to the motor controller. The motor controller not only controls the positioning of the drogue but also controls the motor so that excess hose is reeled in by the hose reel. The controller in addition controls the thrust power. A lidar tracker with a miniature video camera maintains a line of sight between the drogue and the receiver probe and tracks the drogue-probe.
摘要:
A method for refueling and reloading an unmanned aircraft for continuous flight is disclosed herein wherein the unmanned aircraft is maintained and supported by a support aircraft. Both aircraft maintain cargo bays and in-flight operable doors located on the underside of each aircraft for the purposes of docking and exchanging goods. Preferably the goods comprise loadable cartridges and may contain such items as weapons, cargo, or fuel for example. In one embodiment, when both aircraft are in a docked configuration for exchange of goods during flight, the in-flight operable doors open and the support aircraft is capable of loading such cartridges aboard the unmanned aircraft. When necessary the support aircraft may load gear for the purposes of landing the unmanned aircraft. Alternate methods of reloading an unmanned aircraft for continuous flight is disclosed wherein the unmanned aircraft does not have cargo bay doors and the aircraft is supported by a support aircraft.
摘要:
An aircraft fuel tank ullage safety system (10) that is designed to maintain the fuel tank ullage (94) of an aircraft fuel tank (90) filled with nitrogen. The nitrogen prevents the fuel tank ullage (94) from becoming filled with flammable fuel fumes which can cause an explosion. The system (10) consists of at least one flexible, resilient, air-enclosing container (12) having a container ullage (50) that is dimensioned to substantially occupy the space of the fuel tank ullage (94), a differential pressure sensor (30) that determines the internal pressure of the aircraft's fuel tank (90) and a microcontroller (64) that controls and maintains the volume of the air-enclosing container (12) as determined by the differential pressure sensor (30).
摘要:
The invention is a variable displacement hydraulic motor-controlled hose reel drive system. The system includes a variable displacement hydraulic motor, having an electro-hydraulic control valve; a tachometer/position sensor; a reaction torque sensor; and a microprocessor which, depending upon data received from the system's position and reaction torque sensors, sends appropriate signals to the electro-hydraulic control valve.
摘要:
The invention is a method for engaging the drogue of a hose and drogue refueling system with the probe of a receiver aircraft for aerial refueling from a tanker aircraft. The tanker aircraft and receiver aircraft approximately match speed and direction, with the probe of the receiver aircraft maintained at approximately a first predetermined distance behind the tanker aircraft. The hose and drogue are extended rearward from the tanker aircraft so that the drogue is positioned at a second predetermined distance (shorter than the first predetermined distance) behind the tanker aircraft. The drogue and probe are orthogonally aligned with each other, and the hose is extended back beyond the second predetermined distance so that the drogue moves away from the tanker aircraft to and into engagement with the probe. The force of the air stream on the drogue is sufficient to provide for secure engagement of the drogue with the probe.
摘要:
A ventilation valve cooperating with a breathing channel for a fuel tank of a helicopter has a safety device arranged in a valve housing of the ventilation valve. To seal the breathing channel from the tank when a connection between the fuselage cell and the tank is released or disrupted, e.g. in a crash, the safety device includes a spring-loaded plunger (15), a retainer (22), and a movable seal element (10). To allow the tank container to be filled essentially full, and to ensure the ongoing reliable functioning of the breathing channel, the seal element (10) is a buoyant valve ball (10) that seals the breathing channel (81) of the fuel extraction or discharge tank (4) if the fuel level (711) in the tank (4) rises up into the valve (8). Also, the breathing channel (81) is connected with the breathing channel (71) of a main fuel tank (3) by a connecting channel (9).
摘要:
Fluids such as air, liquid or gaseous fuels are stored within a passage of a helically wound flexible hose sandwiched within a peripheral portion of a tubular enclosure of a transport vehicle between an outer shell and an inner support layer of such tubular enclosure, within which equipment and personnel are transported through an environment such as seawater, atmospheric aerospace or outer space. The foregoing structural arrangement provides for highly efficient performance of fluid storing tankage and vehicle envelope support functions.
摘要:
The drogue 11 comprises a canopy 50 supported by a plurality of adjustable ribs 42 and further ribs 43. A control unit 36 is provided for moving the adjustable ribs 42 into a first position P1, in which an air stream can inflate the canopy 50 whereby drag on the canopy causes the drogue 11 to draw a fuel hose 74 from a tanker aircraft 63 into an extended position, and into a second position P2 in which the canopy 50 takes on a cylindrical form and drag thereon in the extended position will be reduced. Selected adjustable supports are movable relative to the others by a control mechanism 41 to adjust a selected portion of the canopy 50 whereby the drag on that portion will be increased and the drogue 11 will move to a new position.
摘要:
A boom deploy actuator with improved maintainability and simplicity has an electric motor and control circuitry for selectively powering the motor to develop torque with either rotational direction for rotating a capstan to vary the length of a boom cord extending from the capstan to a boom. In a preferred embodiment, the motor is a brushless electric motor. The control circuitry preferably includes circuit components for limiting the speed of the motor.