摘要:
Apparatus and method providing an electrical interface (20) between an aircraft (10) and an associated store (20, 16) for controlling data transmissions therebetween. The aircraft (10) has a visual display (38) of video signals received from the associated store (20, 16). The electrical interface (20) includes circuitry for generating a menu (48) of the commands available to an operator of the aircraft (10) and for generating a cursor (44) associated with the menu (48). The electrical interface (20) overlays the menu (48) and cursor (44) on the display (38) to provide a user friendly electrical interface (20).
摘要:
A direct diode laser system (400) includes N laser head assemblies (LHAs) (400A, 400B, etc.) generating N output beams and generating N received output beams, and a torch head (500) recollimating and focusing the N received output beams onto a single spot. Preferably, each of the laser head assemblies (400A, 400B, etc.) of the direct diode laser system (400) includes M modules generating M laser beams, wherein each of the M laser beams has a corresponding single wavelength of light, M-1 dichroic filters (420), wherein each of the M-1 dichroic filter (420) transmits a corresponding one of the M laser beams and reflects all other wavelenghts, and a fiber coupling device (460, 462, 464, 466) collecting the M laser beams to produce a respective one of the N output beams. In an exemplary case, the M-1 dichroic filters (420) function as band pass filters. A method of generating a high fluence, high power laser beam is also described.
摘要:
A robust mechanical reversion system which provides the ability to fly and land in the absence of any fly-by-wire controls and which is transparent to the pilot during normal operation. The described invention provides a mechanism which includes redundant linear variable differential transmitters (LVDT) (7, 39) which generates a transmitted signal (8, 40) in proportion to the displacement of the control apparatus (3, 4, 78, 79) in the cockpit. The signal is fed to the flight control computer which determines the magnitude of the change represented by the signal and in turn, commands both the control surface servo actuators as well as an electrical mechanical servo actuator (EMA) (24, 47) located in close proximity to the flight compartment and coupled to the mechanical system to move in proportion to the change. An Electromagnetic Actuator drives the disconnected mechanical system in synchronization with the position of the cockpit controls in the fly-by-wire mode for a given control surface each time the servo actuator(s) for the control surface are electrically commanded by the flight computer (1). This causes the mechanical system to remain in phase with the position of the control elements as if connected thereto. In the event of a failure of the fly-by-wire system the mechanical systemis automatically coupled into the control system through locking actuators which release a coupling mechanism including a interlocking pin, locking cams, clutch or other engagement device and clamps or locks the pilots input to the mechanical control loop thus providing direct mechanical control to the surface actuators (2, 77) with very little transient effects.
摘要:
Sheet materials are superplastically formed and optionally diffusion bonded into structures, by directly electrically resistance heating the sheets and forming them with a controlled gas-mass flow while the dies (362) in which they are formed may remain relatively cool. The dies include electrodes and thermocouples placed therein, and gas interface ports that connect to the sheets to be formed to allow rapid formation of structures. Some of the gas interface ports may become sealably attached to the part during the formation process so that the structures may be removed from the dies hot, thus allowing a high die throughput.
摘要:
A nose assembly (26) and method for controlling the rotation and stabilizing the orientation of a vehicle (10) during landing maneuvers. The vehicle (10) includes a nose assembly (26). The vehicle flap assembly (30) includes an actuator (32) and a flap (38a) from and between a fully retracted position and a fully extended position in response to a guidance signal received from a flight control computer. In a preferred embodiment, the flap assembly (30) includes a plurality of flaps (38a-38c) each coupled to the nose assembly frame (26) and an actuator that selectively positions the plurality of flaps (38a-38c) in response to a signal. The method for rotating a vehicle (10) in nose-forward flight, rotating the vehicle (10) in a first direction, and selectively actuating one of a first and second flaps (38a-38c) from a retracted position toward an extended position to generate a damping moment tending to position the vehicle (10) in a base-forward orientation.
摘要:
A relatively impervious mechanical seal is formed between the outer surface of a tube (1, 3) and the inside surface of a mechanical fitting (7) of a high pressure fluid or hydraulic system by applying a very thin soft metal layer (19) onto the outer surface of the hard metal tube (1, 3) and/or inner surface of the hard metal fitting (7). The thickness of such thin metal layer (19) is independent of the size of the tube (1, 3) and/or fittings (7). Many metals and alloys of those metals exhibit the requisite softness, including silver, gold, tin, platinum, indium, rhodium, and cadmium. Suitably, the coating is about 0.0025 millimeters (0.10 mils) in thickness. After compression, the tube (1, 3) and fitting (7) combination exhibits very low leak rates on the order of 10 cubic centimeters per second or less as measured using the Helium leak test.
摘要:
Une matrice de formage (13) comportant une cavité matricielle (19) contient une ébauche de formage (17) composée d'un alliage métallique aux propriétés de superplasticité. La pression de formage dans un espace sous pression (18) contigu à l'ébauche de formage (17) est régulée par un régulateur de pression (23). Le volume de la cavité matricielle (19) est déterminé, lorsque la masse de gaz est initialement contenue dans la cavité (19) au début du cycle de formage. Le temps de formage total est déterminé de manière empirique. La vitesse moyenne d'écoulement de la masse de gaz qui s'échappera de la cavité (19) est calculée en divisant la masse de gaz totale initialement contenue dans la cavité (19) par le temps de formage total. Un compteur (33) d'écoulement du gaz communique fluidiquement avec la cavité (19) et mesure la vitesse d'écoulement du gaz (35) déplacé par l'ébauche de formage (17) et sorti de la cavité (19). Le compteur (33) d'écoulement du gaz est continuellement surveillé lors du cycle de formage ou lorsqu'un signal de vitesse d'écoulement du gaz est renvoyé au régulateur de pression (23). La pression de déformation est régulée par le régulateur de pression (23) de manière à ce que la vitesse d'écoulement du gaz échappé de la cavité (19) s'approche par approximation à la vitesse d'écoulement moyenne déterminée du gaz.
摘要:
Rails de chargement parallèles et fixes (24 26), placés sur le plancher de la plateforme de chargement d'un avion et espacés suffisamment pour y déposer une palette en douceur. Une pluralité de fentes colinéaires sont disposées sur la longueur du plancher de la plateforme de chargement, immédiatement en dedans du bord de chaque rail. Lesdites fentes sont espacées régulièrement et orientées dans le sens de la longueur par rapport au plancher de la plateforme de chargement. Un taquet (38) s'étend au-dessus du plancher de la plateforme de chargement à partir de chaque fente et est conçu pour s'introduire dans une encoche (36) située dans le chargement. Quand il est introduit dans l'encoche, le taquet est conçu pour se déplacer le long de sa fente respective et, de ce fait, déplacer la palette dans le sens de la longueur du plancher de la plateforme de chargement. Ladite palette passe alors successivement de taquet à taquet. Un autre aspect de l'invention a trait à l'utilisation des rails de chargement mobiles sur la rampe de chargement. Ces rails peuvent coulisser dans le sens de la largeur sur la rampe, à l'intérieur de fentes de montage, ce qui permet de modifier l'écartement entre les rails. On facilite, de ce fait, le positionnement du chargement sur la rampe et son alignement avec les rails fixes du plancher de la plateforme de chargement.
摘要:
Apparatus for determining the position of a source (30) of electromagnetic radiation relative to a remote object (20) is disclosed. A multicomponent radiating means (40) of unknown orientation is provided having components centered about the origin of the source. A plurality of electrical signals are applied to the components of the multicomponent source to generate a plurality of electromagnetic fields. The electromagnetic fields are distinguishable from one another. A multicomponent receiving means (21) is disposed on the remote object. The multicomponent receiving means is provided with at least three orthogonal components (22, 23, 24) for detecting and measuring components of the electromagnetic fields transmitted from the source. The source and receiving means are adapted for operation at a separation distance sufficient to ensure that the far-field components of the electromagnetic fields are substantially greater in magnitude than the near-field components of the fields. Analyzing means (50) is associated with the receiver for converting the components of the electromagnetic fields into source position relative to the remote object without priori knowledge of the orientation of the sensor or the relative orientation of its components. The analyzing means operates open-loop with respect to the source and determines source position with at least one ambiguous combination of orientation or position.
摘要:
The present invention is directed to a unique gear set (10) including a conical involute pinion (14) and a mating face gear (12). The mating face gear has an axis (GA) whose location and orientation is usually configured as intersecting with or slightly offset from the pinion axis (PA). The pinion teeth (16) are formed as involute helicoids generated from a base cylinder. The mating face gear teeth are defined by the shape of the mating conical pinion teeth surface at the time when the two mating gears are specifically positioned so as to perform synchronous rotations about their respective axes of rotation. This arrangement allows the gears to mesh and transmit high torque at high speeds through an angle as required in helicopter transmissions and the like.