Abstract: A weapons training apparatus is disclosed for simulating long range weapons o as to train a marksman in the use of the particular weapon being simulated. The weapons training apparatus comprises a laser transmitter mounted within the weapon being simulated which, when activated by the marksman, broadcast at a target a square wave beam of laser light having a predetermined frequency. A receiver, mounted upon the target, will sense only a square wave laser light beam having the predetermined frequency mentioned above, and activate a buzzer so as to indicate that the marksman has scored a hit upon the target.

Abstract: A computer generated image simulator is disclosed for scanning a visual target and then providing a visual image of the target which is to be displayed upon a reflective display screen such that a trainee pilot may observe the target. A head tracker which monitors the position of the trainee pilot's head, and an eye tracker which monitors the position of the trainee pilot's eyes, respectively provide head and eye orientation signals to be processed by electronic circuitry such that the target which is projected upon the reflective display screen by a helmet mounted projector will be orientated upon the screen in accordance with the orientation of the trainee pilot's head.

Abstract: A training device that is a simulator of oil bilge, oil spray, and Class A fires. The device is fully controllable and imitates the appearance of a machine or engine room. Propane burners are used to provide flames, and flame and water sensors are used to monitor trainee performance. A switch controlled by a dummy valve is also included to be operated by the trainee in its proper sequence of applied procedures.

Abstract: A sawtooth waveform circuit for a cathode ray tube display apparatus or the ike is disclosed for providing a sawtooth waveform signal in synchronization with the uniformly spaced pulses of a sync signal. A direct current voltage is supplied to an integrator which produces a ramp voltage. Switching means responsive to each pulse of the sync signal shorts the integrator so as to cause the ramp voltage to appear at the output of the integrator as a sawtooth waveform signal. A summing amplifier amplifies the sawtooth waveform signal, and then combines the amplified sawtooth waveform signal with a variable direct current voltage generated by a head tracker so as to provide at the output of the summing amplifier a raster drive signal.

Abstract: A pattern generator for simulating image generation is disclosed which pets the testing of wide angle, non-programmed visual display systems including, for example, a 360.degree. non-programmed visual display system. The program generator produces a pair of composite signals, the first of which may be utilized by an annular projector to project upon a screen a sawtooth waveform pattern, and the second of which may be utilized by the annular projector to project upon the screen a checkerboard pattern so as to facilitate the testing of wide angle visual display systems.

Abstract: A smoke generating apparatus is disclosed for providing a nontoxic smoke so s to simulate the smoke of a fire. The smoke generating apparatus comprises a storage tank, a smoke producing agent stored in the storage tank, and a housing affixed to the top of the storage tank. A centrifugal pump supplies the smoke producing agent to a tubular coil which superheats the smoke producing agent. The superheated smoke producing agent is then released through a solenoid valve into the atmosphere so as to form a vapor.

Abstract: An apparatus for simulating the recoil motion of a weapon. The apparatus comprises a weapon having a trigger mechanism and an orifice located near the tip of the weapon. Whenever a trainee rifleman activates the trigger mechanism, timing means generates a trigger pulse. The trigger pulse, in turn, activates a two-way valve which allows a stream of compressed air to pass from a compressor to an intake port located on the weapon. The stream of compressed air is then passed through the orifice of the weapon so as to simulate the recoil motion of the weapon.

Abstract: Apparatus that imitates the appearance of a commercial deep fat fryer and simulates grease fires. A first burner extends into the bin of the fryer which would be occupied by cooking oil in the operational fryer, and a second burner occupies an area under the hood near the exhaust vent. Also included, out of sight, are a switch controlled by the lid on the bin, an extinguishment sensor in the bin, and a thermostat, which act together to disable the burners and deactivate the simulator when proper fire fighting procedures have been employed by the trainee.

Abstract: A weapons simulator for training a marksman on an anti-armor weapon. The pons simulator includes first and second broadcasting means for projecting on a reflective display screen a background scene, a visual target, and an infrared target spot in alignment with the visual target, and a two-axis laser spot positioning servo system for moving the aligned visual target and infrared target spot upon the reflective display screen. A matrix detector mounted within the weapon will sense the position of the infrared target spot upon the reflective display screen whenever the marksman fires the weapon, and then supply to a microprocessor computer digital information indicative of the position of the infrared target spot upon the reflective display screen. The microprocessor computer, in turn, processes the digital information so as to determine whether the marksman has scored a hit, a miss, or near miss upon the visual target.

Abstract: A constant amplitude, variable frequency, synchronized, linear ramp generr is disclosed for generating a sawtooth waveform signal, whose amplitude is independent of frequency. A capacitor is charged by a voltage controlled current source, which is responsive to a feedback control signal provided by an integrator; and subsequently discharged by a clamp, which is responsive to a trigger pulse signal, so as to establish a ramp voltage across the capacitor. The ramp voltage, which appears at the output of the linear ramp generator as the sawtooth waveform signal, in turn allows a television system to operate at various line rates.

Abstract: A semiconductor laser alignment device for aiming a laser light beam, broast by a weapon, along an optical light path such that the laser light beam is in alignment with the aiming direction of the weapon at a target which is located a predetermined distance from the weapon. The semiconductor laser alignment device comprises a tubular housing attached to the barrel of the weapon, a laser diode located within the tubular housing for broadcasting the laser light beam, and a projecting lens for collimating the laser light beam broadcast by the laser diode. Zeroing means connected to the laser diode positions the laser diode such that the laser light beam broadcast by the laser diode is in alignment with the line of sight of the weapon.

Abstract: A multilayer printed circuit board is disclosed having appropriate ground and voltage planes. The multilayer printed circuit board includes a mounting plane, a plurality of dielectric sheets stacked upon the mounting plane, a plurality of conductive sheets positioned between adjacent dielectric sheets, and a plurality of rectangular shaped apertures passing through the multilayer printed circuit board. Each rectangular shaped aperture of the multilayer printed circuit board has a plurality of voltage connector terminals. Electrical connection from one of the conductive sheets to the appropriate voltage connector terminal is provided by a conductive disc which passes through a hole located within the multilayer printed circuit board.

Abstract: An etched plate used to simulate an infrared target for trainees using siated weapons. Selectively etching the plate in a variety of fashions successfully imitates the thermal signature of the simulated target. The simulated weapons are then "fired" at the plate and hits recorded. The plate may be electrically heated.

Abstract: A temperature and moisture regulator for such devices as integrated circuits and the like is disclosed as comprising an insulated mount for the device whose temperature and moisture is to be regulated, a first thermoelectric cooler in effective contact with both a certain substantially central area of said device and one end of an elongated metal heat-sink. A plurality of resilient heat-conductive, thermal feedback fingers are metallurgically bonded at one of the ends thereof to said heat-sink and are urged against a portion of the surface areas of said device at the other ends thereof in predetermined spatial dispositions from but in proximity with the aforesaid central area thereof that is in contact with said first thermoelectric cooler. Hence, both cooled and heated areas occur on various surfaces of said device, the former of which effects the cooling thereof, and the latter of which effects the heating thereof and, thus, the controlling of whatever moisture is caused by the cooling thereof.

Abstract: A transducer array release and pressure compensation system for releasing a ose cone assembly from a cylindrical housing so as to deploy a plurality of transducer elements and pressure compensate the transducer elements. When hydrostatic pressure is applied to a bladder located within the nose cone assembly, the bladder pulls a release cable so as to release a split ring which secures the nose cone assembly to the cylindrical housing. The application of hydrostatic pressure to the bladder forces air from the nose cone assembly through a compensator airline to the transducer elements so as to pressure compensate the transducer elements.

Abstract: A filter replaces the oxygen canister of an oxygen breathing apparatus and the air flow path is modified to provide a realistic simulation for training personnel in the use of closed circuit breathing units.

Abstract: A charge coupled device signal output summing circuit is disclosed for prding a video data signal to a scan laser projector system which projects an optical image on a 360.degree. wide angle display screen. The charge coupled device signal output summing circuit comprises a linear image sensor which senses the light received from the optical image and produces a pair of output signals, each of which has a plurality of video data components. The video data components of the pair of output signals are then summed by a unique combination of buffers, analog switches, capacitors, a video amplifier, and adder to produce the video data signal.

Abstract: An improved temperature gradient and moisture regulator for electrically ered apparatus and the like is disclosed as comprising an insulated mount for supporting the apparatus whose temperature gradient and moisture is to be controlled. A thermoelectric cooler is located in effective contact with both a certain substantially central surface area of said apparatus where the cooling thereof is to be effected and one end area of an elongated heat pipe. A plurality of thermoelectric heaters is also disposed in contact with such surface areas of said apparatus as are located in predetermined spatial proximity with the aforesaid cool surface area, thereby creating a heating effect thereat for moisture control purposes. Both predetermined cooled and heated areas are caused to occur at various surface locations where the temperature gradients thereof are to be controlled.

Abstract: A technique for simulating the thermal appearance of objects. Electrical rgy is applied to conductive material that is attached to a mounting surface shaped in the form of the selected object. The conductive material is placed to simulate the radiation pattern that the object has been shown to demonstrate.

Abstract: A terrain probe for sensing the elevation of a terrain surface whose prof is being measured and followed. A two-phase induction motor will raise or lower the terrain probe in response to either an increase or decrease in the elevation of the terrain surface. A four arm bridge circuit, which has an arm enclosed within the terrain probe, in combination with a low frequency oscillator, a differential amplifier, and power amplifier generate a sinusoidal drive signal which controls the two-phase induction motor.