Abstract: This invention relates to a focused synthetic array wherein a different signal from a crossed beam antenna is converted to a bipolar video signal and applied as the input to a synthetic array processor. In another embodiment of the invention there is a separate reduction of each beam output from a crossed beam antenna to bipolar video signals with a separate application of asymmetrical amplitude weights to the two bipolar video records and a subsequent subtraction in the course of synthetic array processing.

Abstract: A method of making a high temperature fluted core composite radome structure.

Abstract: A fitting for establishing a sealed connection with a boss which fitting includes a concentric depression about the innermost portion of its boss engaging surface, which retains a backup ring of special cross-section by means of an inwardly facing circumferential surface therein, the ring, being constructed from material which creeps when subjected to force over an extended length of time, combining with the depression to control the deformation of an adjacent O-ring so that any gapping adjacent the O-ring is of insufficient size to allow extrusion thereof and seal failure.

Abstract: A highly effective and efficient dry cooling system for dissipating waste heat of a steam-electric generating power plant. The dry cooling system includes an assembly of cells or modules having passively acting heat pipes installed in a Y configuration in each module. These heat pipes thermally couple the exhaust steam from a turbine flowing in a graded duct with the atmosphere. A large fan mounted at the top of each module is driven to induce air flow past exterior heat pipe portions of the module to dissipate heat picked up from the steam in the duct. The steam condensate flows down the graded duct and collects in a hot well for return as boiler feedwater. Steam from the boiler drives the turbine and is exhausted into the graded duct to repeat the cycle.

Abstract: A numerical control system for a machine tool. The relay controls for the machine tool are simulated in the read only memory of a computer which is used as a controller for the flow of digital information between the control display panel, the tape reader, a memory, the machine tool and other parts of the system. Since the simulation is based on relay diagrams, the user can customize the control system to his requirements without having been previously trained in computer programming or computer systems. Also, since the control system is adapted to the machine tool by software changes, the same hardware is usable without modification by a variety of machine tools, such as turret lathes and milling machines, and under a variety of operation conditions. Data debouncing and diagnostic aids are included in the system.

Abstract: A guide latch mechanism to restrain cargo in three directions. The mechanism retracts to permit cargo to pass over the mechanism and automatically erects to a vertical position for future use.

Abstract: An apparatus for plating work pieces including irregularly-shaped workpieces of various sizes with a technique known as ion vapor deposition wherein the articles are tumbled in adjacent counter-rotating barrels, a portion of which are cathodes of a high voltage system. The barrels rotate about generally horizontal axes toward anodes positioned therebetween which supply evaporated plating material.

Abstract: A joint for a nestable cargo carrier including a plurality of circular sections conically shaped to form an ogive contour when nested, one within the other. The shell segments are bolted together to provide the present positive mechanical joint, reliable joint sealing and ease of field assembly.

Abstract: A five-component strain gauge balance for measuring the forces and moments exerted on a reflection plane model aircraft in a subsonic continuous-duty or blow down wind tunnel. The balance beams are arranged in a diamond pattern so that the rolling moment reactions are concentrated in the side beams making the axial force, normal force and yawing moment felt by the forward and aft beams more accurately measurable. The entire balance is machined from a single piece of material, ensuring maximum repeatability of measurements. This design also simplifies fabrication and provides better access for gauging.

Abstract: A servo system, particularly well suited for use in a computerized numerical control system for a large machine tool, in which a plurality of axis controlling servo circuits are controlled by one computerized axis controller. As each controlled axis moves, an attached resolver's output is digitized to generate a digital position feedback signal which is compared to the desired position in the computer. The resultant error signal is converted to an analog voltage to control said axis motion. A digital clock and counter drives two digital to analog converters to create the two resolver inputs, and supplies timing signals to the computer, thus synchronizing the system.

Abstract: This apparatus generates a signal to control the vertical position of a horizontal bar indicator in a head-up display for viewing by the pilot of an aircraft so that the bar is superimposed on the pilot's view of the runway to assist him in controlling the pitch attitude of the aircraft during landing. The apparatus forms the bar control signal by operating on selected dynamic parameters of the aircraft to generate a lead compensation angle signal. A signal representative of the product of the lead compensation angle signal and a gain factor signal that is a function of the aircraft's altitude is summed to a signal representative of the glide path angle selected by the pilot to produce the desired bar control signal. In IFR conditions the bar may be superimposed with suitable flight director indications on the head-up display.

Abstract: A flow indicator for use in a continuous flow type oxygen apparatus. The flow indicator constructed of a flexible chamber and restrictor to give an immediate visual indication of a minimum acceptable oxygen flow within the system.

Abstract: A separable heat pipe assembly for stabilizing the generally frozen soil adjacent and supporting a structural member or foundation in permafrost or similar regions, including a cooperative combination of a tubular structure installed in a permafrost environment, a heat pipe element having its lower portion installed in the structure and positioned at least in proximity longitudinally to the wall of the structure, and soil or other substance filling the space remaining between the lower element portion and the structure wall. The upper portion of the heat pipe element has a thicker wall than its lower portion and can be provided with threads thereon. A sleeve-type radiator can be provided with complementary threads therein so that the radiator can be threadedly engaged to the upper element portion. The depth and pitch of the threads can be changed to vary the heat transfer surface area obtainable between the engaged radiator and upper element portion.

Abstract: An improved explosive cartridge holder having an indicator to show the presence of a cartridge and a spring and new design to assist in removal of the discharged cartridge.

Abstract: In a hydraulic actuator such as those used in multiple degree freedom motion bases for aircraft simulators, a secondary force sensitive hydraulic servo loop is added in parallel to the primary position feedback servo loop with the secondary loop having a servo valve possessing substantially greater band pass and less capacity than the main valve used in the first servo loop. Force feedback from the control actuator is applied degeneratively to the smaller servo valve, thereby reducing noise and jitter caused by responses of the system outside the response of the primary servo loop. The response of the main servo loop which control the position of the actuator is low pass and restricts response to the full desired band pass of operational frequencies. The secondary loop is high pass and is shaped to prevent degeneration of operational frequencies while providing optimum gain and phase for the degeneration of the unwanted high frequency portion of the band wherein noise and jitter reside.

Abstract: A carpet installation for use with a frangible panel to assist in the disintegration and breakup of the panel permitting ventilation through an aircraft floor. The carpet installation utilizes positioning and hold-down tiles to reduce adhesive contact with the frangible panel and isolators to limit the support for the panel and increase the shear forces on the panel during breakup of the panel.

Abstract: A munition designed to be emplaced in concrete or other paved surfaces which is particularly destructive to pneumatic tires.

Abstract: An improved hard sided cargo container having a top, bottom and four vertical walls, two opposing walls of said container being pliant to permit incremental vertical expansion or contraction of said walls responsive to loads on the floor of the container.

Abstract: A cargo loading and unloading shutoff system is used to control transfer of loads between a cargo aircraft and a loading dock. Control logic means compares commands entered on a control console and the existing conditions in the aircraft and on the dock during a loading or unloading operation. On loading, the logic means shuts off the dock conveyor drive immediately when all loads are transferred to selected aircraft positions and then shuts off the aircraft conveyor drive a predetermined period later. On unloading, the logic means shuts off both the aircraft and dock conveyor drives simultaneously when all loads are transferred to selected dock positions. The logic means also prevents energization of the aircraft and dock conveyor drives when the number of load positions selected in the aircraft is different from the number of load positions selected on the dock.

Abstract: A dump valve which automatically closes (re-arms) when the system pressure reaches a predetermined level.