Abstract: This portable weighing system for aircraft includes a plurality of individual load cells which are connected to a central computing and display unit capable of storing dimensional characteristics of commonly encountered aircraft. The computer within the central unit compensates by its programming for nonlinearities in the response of the load cells. The output display can include aircraft gross weight, center of gravity (optionally displayed as percentage of the mean aerodynamic chord). Interactive capability is also provided to facilitate input of aircraft dimensional characteristics which are not already contained within the memory of the central unit.

Abstract: A mechanical biasing device to drive an aircraft control surface to a predetermined position relative to the main airfoil, either directly or indirectly through a linkage system, while also providing sufficient clamping force at the neutral position so that the airfoil and control surface behave dynamically like a single structure.

Abstract: The rotate function of this invention involves cyclic shifts of 1 to 4 byte data by an amount of 0, 1, 2, or 3 bytes either to the left or to the right. Only one CPU firmware clock cycle is required regardless of the shift amount. This shifting is done either on data which is transferred from computer memory or on data prior to its transfer into computer memory. Firmware-controlled hardware shifts the bytes in the data field in response to information provided concerning the location of the most significant byte in memory relative to the boundaries of the data word and the length of the data word. The firmware can also directly specify the amount of the shift.

Abstract: A flight control surface coupling system which provides a two-element drive coupling between two control surface segments. The first element is a torsion bar that has adequate spring rate to suppress surface flutter yet soft enough to deflect and function as a low load compliance element between sets of drive actuators. The second element is a drive coupling that permits the two surface segments to move freely within its stops. The stops are spaced to allow easy determination of out-of-rig conditions and small enough to provide an effective drive to move one segment through the second segment with a single actuator. Structural fatigue loads are greatly reduced without sacrificing surface positionability.

Abstract: A chain drive system (10) wherein the chain (12) includes a plurality of interconnected links (14) is provided. The chain drive system (10) includes a drive gear (28) for driving the chain (12). A rack (20) is provided and includes a plurality of spaced apart teeth (22) for engagement with the links (14) of the chain (12). Idler gears (38, 40) are provided for causing engagement between the chain (12) and the rack (20).

Abstract: High density, simplified fabrication and the elimination of sidewalk leakage effects are achieved by the implementation of a self-aligned ion-implantation step during the fabrication of the MNOS transistor wherein, after the formation of the gate electrode of the transistor, low energy ions are implanted within the nitride layer of the MNOS transistor in the regions of the nitride layer adjacent to the gate electrode.

Abstract: A vibration sensor is formed by coupling the vibration to be sensed to change the positional relationship between grating means and light beams so that the resultant variations in light intensity of the beams beyond the grating means vary with a function of the sine and cosine of the positional change. This allows the detection of the vibrationover a wide range of frequencies and amplitudes.

Abstract: A slat system in which the slats are supported on tracks and the slats are actuated by a simple bell crank linkage oriented so that its plane of motion is parallel to the wing chord reference plane. The mechanism retracts to a collapsed over-center position and extends to an over-center position so as to lock the slat into the retract or extend positions. Each slat segment is driven by two identical mechanisms tied together by a synchronization link which provides redundancy. Either actuator can drive the surface alone, as the second actuator is driven through the synchronization lever, in case of power loss to the second actuator.

Abstract: The unique construction of this Continuous Flow Electrophoresis Apparatus eliminates the need for ion permeable membranes between the electrode chambers at the sides of the separation chamber and the separation chamber itself. By carefully controlling the relative geometries of the electrode chambers and the separation chamber, a membrane-less electrophoresis separation may be conducted without the problems attendant to these chambers which utilize ion permeable membranes.

Abstract: A heat pipe formed by metal deposition, on porous metal wick parts, which forms the enclosure and provides both a metallurgical bond to the wick and a hermetic seal.

Abstract: A universal sleeve for use in an air recirculation barrier to seal off the passage of air around penetrating components comprising a flexible piece of material joined along two edges to enclose the components passing thru the barrier. The engaging edges of the flexible material has Velcro tape of hook and pile construction to closely surround penetrating components and limit the passage of air along the components thru the barrier. Sealing tape may be used on the edges of the flexible material to further seal off the passage of air.

Abstract: This combination process enables both MNOS and CMOS devices to be fabricated upon the same wafer in very large scale integration systems. Conventional moat isolation techniques are replaced with low temperature ion implantation processing to accomplish substrate isolation. Both n and p channel MOS transistor diffusions and field oxidations are processed concurrently. Also, this process utilizes bulk silicon wafer material rather than epitaxial wafer material as the substrate.

Abstract: Room temperature operation of a multiple laser diode array is enabled without the need for liquid cooling by interleaving individual laser diode assemblies with electrically insulating but thermally conducting spacer heat sink layers which have electrically conducting portions adjacent the laser diode assembly such that the multiplicity of individual laser diode assemblies within the array may be operated electrically in series. The alternating leaves of the array are confined between top and bottom end plates, and the entire assembly is secured together by appropriate means.

Abstract: A system for providing a Head-Up Display (HUD) on board an aircraft to assist a pilot in guiding the aircraft. The display is positioned in the pilot's normal line of sight. In one mode it utilizes a radio beam landing system such as an ILS (Instrument Landing System) to generate symbols that correspond to visual ground cues which, together with an aircraft symbol display, provide the pilot with cues for aligning the aircraft on the appropriate path for approach and landing. The system moves the aircraft symbol in accordance with motion changes of the aircraft. During a landing approach the pilot "flies" the aircraft symbol relative to the simulated and/or real ground cues. By making the HUD correspond with ground cues, the abrupt transition from instrumented to visual flight is eliminated. At altitudes below which available ILS is not acceptable, the system provides a smooth transition to a mode independent of ILS and then to a flare mode.

Abstract: A planar process and new structure which leads to large scale integration capability by utilizing selective ion implantation into semi-insulating Gallium Arsenide substrates or any other compound semi-conducting material to yield isolated depletion enhancement mode JFETS and MESFETS, p-n junction and Schottky diodes, resistors and hot electron current limiters. The planar structure provides relatively simple integrated circuit fabrication which results in an increase of circuit device reliability and thereby improves not only the ease of fabrication but thereby increases yield of enhancement mode JFETS and MESFETS and other like devices in integrated circuit fabrication. In addition improved device structure is possible which increases device speed.

Abstract: A system for identifying a hard target from a distance. A delivery vehicle, such as a missile or bomb, is adapted to be dropped from the air. The delivery vehicle contains a plurality of hard target identifier or kinetic penetrator elements. Each of the elements has a nose portion of aerodynamic shape and a plurality of fins connected thereto. When ejected from the delivery vehicle, the elements will reach a substantial velocity, and hence, kinetic energy to penetrate partially into a hard target. A soft surrounding area, such as earth or water will absorb the elements. The elements may be passive for reflecting waves, such as acoustic waves or electromagnetic energy. Alternatively, they may be active elements capable of ejecting a dye, such as a fluorescent dye, or for transmitting acoustical or electromagnetic energy upon being activated.

Abstract: An address drive circuit for use on programmable, nonvolatile, semiconductor memories which use either Metal Nitrite Oxide Semiconductor (MNOS) or "floating gate" transistors for Electrically Erasable Programmable Read Only Memory Storage (EEPROMS). The inventive drive circuit is based on the use of prior art high voltage Complementary Metal Oxide Semiconductors (CMOS) transistors which have junction diode breakdown limits exceeding the maximum "device drain voltage" (V.sub.DD) to be switched. This circuit has negligible direct current power dissipation, high speed memory read/write capability, and requires minimum physical installation area.

Abstract: A three-way heat pipe configured in a generally Y-shape having a condenser-evaporator or heat-sink end, an evaporator arm and a condenser arm. In addition to conventional internal pumping the heat pipe is mechanically pumped externally from the heat-sink end to the evaporator arm. Heat transfer can take place between any two of the three elements by thermostatically controlling the external pump. Heat or cold may be stored in a suitable medium surrounding the condenser-evaporator end of the pipe for later transfer through the condenser or evaporator ends used as heat exchangers without a secondary circulation system. Heat transfer may also take place directly between the evaporator and condenser arms without storage. In the preferred embodiment of the heat storage configuration, a valve is placed in the condenser arm to prevent unwanted heat transfer.

Abstract: A multiaxis actuator is described which provides force along at least two translational axes through the interaction of multiple windings on a single platen which interact with the field poles of a magnetic member spaced apart a sufficient distance to allow multiaxis operation. Said field poles generate magnetic lines of flux perpendicular to said platen. Said windings are constructed and arranged so as to provide current paths in one direction over a generally wide planar area intercepting the magnetic flux lines, while concentrating current in the opposite direction return path in a relatively narrow volume not intercepting the magnetic flux lines. Said individual windings are utilized in pairs having their substantially planar portions collinear to one another and disposed substantially perpendicular to a portion of the magnetic field lines generated between said field poles.

Abstract: A foot actuated latch for use in an aircraft cargo bay to provide vertical and longitudinal restraint of a cargo container. The latch having a lineal engaging and disengaging action which resists lineal forces parallel to latch movement tending to disengage that latch pawl from the container. The actuation of the latch for engagement and disengagement accomplished by a downward movement of the latch levers.