Abstract: A smoke generator and system for its employment is disclosed wherein a sm is generated from a liquid smoke producing agent when the liquid is vaporized by pressurized 1000.degree. F. air which has been heated in an electrical resistance coil. The systematic application requires modular use of the electrical resistance coils through an area to provide smoke from a variety of origins in accordance with the control exercised from a centrally located control panel. The smoke producing agent, the pressurized air, and the electrical current are supplied to each module via said control panel.

Abstract: A head and eye tracking apparatus utilizes a plurality of coded IR emitte mounted in a reflective surface, as a reference base. A reference lens aligned with the user's head references a limited number of the emitters within its field of view and transmits the image to a fiber optic bundle. Simultaneously, an IR reflection from the user's eye is superimposed on the image and transferred via the fiber optic bundle. A CCD array detects the IR transmission and provides a high speed read-out to a computer which can determine head and eye positions from the geometry of the emitters referenced by the lens.

Abstract: A resistance tube type smoke generator utilizes a plurality of tube secti, each having a distinct cross-sectional area and electrical resistivity to provide both storage and vaporization via prolonged differential heating of a smoke producing agent. Thermal control may be exercised by sensing change in resistivity of the entire tube or by thermostatic sensors attached to the tubing sections.

Abstract: In an axial flow compressor rotor stage having a blade mount rail about the eriphery thereof, a seal is positioned below the blade platforms to provide improved compressor gas path efficiency. Each blade platform has a seal bonded to the underside thereof, said seals extending toward adjacent blade platforms and providing sealing means in the interstices between said platforms as well as between said platforms and said blade mount rail.

Abstract: A training device simulating a personal breathing apparatus utilizes high pressure air canisters mounted within the breathing bags of a modified operational breathing apparatus. Air is supplied to the trainee through a plurality of regulators and valves via an air passage opened by a mechanical actuation linkage, which simulates the actual actuation device and technique.

Abstract: A vehicle simulator for training purposes enables the trainee to observe rnal effects through a simulated thermal sight by the utilization of a variety of paints whose pigments are selected based on their reflectivity to known wavelengths of light. A lamp bank is provided to illuminate a modelboard with various hues so painted as to provide reflectivity corresponding to thermal images. A monochrome television camera mounted on a movable gantry supplies images of said modelboard to a display in the vehicle simulator.

Abstract: A flight simulator utilizes dual visual probes to simulate multisensor imry from a modelboard data base. The probes are mounted on a common gantry at a fixed relation to one another corresponding to their aircraft relation. One probe provides a wide angle visual presentation to the simulator cockpit, while the other provides a narrow field of view presentation modified and presented on a small screen CRT as a Forward Looking Infrared or other type display.

Abstract: A linkage between a host computer and a plurality of external devices, such s a simulator system, utilizes a distributed processing network of individual data processors to process, control, and position data for transmission to and from said host computer on a data rate of change basis. A master processor interfaces with the host computer and is connected via a serial data link to a plurality of slave processors located at the external devices. Each processor determines the necessity for a transfer of data from its associated computer or device and controls data transmission therefrom accordingly.

Abstract: An apparatus for training students in thermal image recognition provides a lurality of variable thermal images for viewing through telescopic sights at a plurality of student stations. Identification of the image is electronically evaluated for correctness and response time by a microcomputer, located at an instructor station, which controls displays indicative of the student's performance.

Abstract: A simulated radiation source and a compatible detector system are disclos The combination is useful in training for detecting alpha radiation contamination. A flexible, soft iron plate or first permanent magnet in the detector system responds to a second magnet that is employed to represent an alpha radiation source. Where the first permanent magnet is used, an iron member may be adopted in lieu of the second magnet. The simulated source is affixed to the subject's clothing or body. When the detector system is brought into proximity with the simulated radiation source, the soft plate or first magnet responds and affects a strain gage which in turn provides an electronic indication.

Abstract: An optic fibre is wound around a drum and a strip of flexible adhesive is plied across the width of the winding to maintain the relative positions of individual turns of the winding. The fibre turns and adhesive are then cut across the width of the winding and the resultant ribbon is unwrapped from the drum. One end face of the adhesive in which the cut ends of the fibres are secured is then cut such that the axes of the fibres assume a predetermined orientation relative to the cut end face. The cut end face is then applied against the surface of a former of predetermined shape and the fibre ends are secured in the positions they have assumed. A radial fibre arrangement is obtained by cutting the end face normal to the fibres and using a cylindrical former.

Abstract: Disclosed is a GaA1As laser diode wherein an abrupt etch step in the waveguide layer forms a third mirror. The structure is a large optical cavity double heterostructure laser having a relatively long active cavity and a relatively short passive cavity. Output is temperature and current sensitive for single mode operation, widely-spaced dual mode operation, and narrow-band multimode operation.

Abstract: A compensation system for use in a helmet mounted raster projection system tilizes a microprocessor to control the offset position of the raster line and frame scanners, thereby increasing the stability of the viewed scene. The microprocessor calculates control words which are fed to the scanners via digital to analog converters during the vertical sync of the raster scan. The microprocessor calculates the control words from pilot look data obtained by head and eye trackers compared to previous similar data.

Abstract: A panoramic lens grouping utilizes a number of negative and positive power enses to provide 360.degree. photography and projection capabilities. The lens grouping uses a hyperbolic mirror as its input or output, in the photographic or projection mode, respectively. The lenses of the group are selected to reduce the Petzval curvature introduced by the hyperbolic mirror. The lenses are arranged such that the negative power lenses are flanked by the positive power lenses. Provision is made for the use of an internal shutter in the spacing between lenses in the lens group.

Abstract: The present application discloses a low cost method and apparatus for scog the performance of a trainee in his or her use of a military-type weapon in simulation. In the broader sense, the invention disclosed determines and records whether the analog value of a test signal is within a preselected range of a preselected analog value. In the intended environment the preselected analog value denotes the centrex of a target. And, the preselected range is the area of proximity to the target that denotes a "hit", and is provided by a steady-state voltage that is taken in sum and difference format with the above-identified preselected analog value.

Abstract: A training canister for use with a personal breathing apparatus supplements filtered air with oxygen supplied by an internal cylinder. The canister has an integral filter providing airflow to the breathing apparatus, and utilizes a miniature high pressure valve to release supplemental oxygen into the system from an oxygen cylinder charged to up to 2000 psi. The training canister simulates operational equipment in size, shape, integration to the personal breathing apparatus, and actuation.

Abstract: A simulated thermal sight utilizes a computer to store digitized video data erived from photographs of actual thermal images. The computer inserts video images formed from the data into optical telescopes, via a miniature TV and mirror system, to simulate a thermal image for a trainee. An IR detector and emitter, whose location corresponds to the apparent location of the thermal image, are used to measure aim error and provide an input to the computer.

Abstract: A training system simulates thermal sight presentations utilizing miniature argets which have been painted with retroreflective paint in predetermined patterns corresponding to the thermal radiation associated with the target. The target is viewed through a telescope upon which a light source is mounted, light from said source being reflected into said telescope by the retroreflective paint. A pressure actuated switch in the eyecup of said telescope energizes said light source and background illumination. The system is designed for use with a simulated weapon and includes a TV camera mounted on said weapon with an associated light source for illuminating said target, thereby providing trainee monitoring capabilities.

Abstract: By using a fluorescer on the viewing surface of a visual screen and illumting the screen with ultra-violet light, a bright display of the scene is achieved when the laser scan system is operated in the negative mode to quench the fluorescence at spots on the screen that correspond to darker areas in the scene.

Abstract: A template, for use in conjunction with a radar presentation to train an intercept controller in coordinating aircraft movements, defines spatial relationships between aircraft symbols presented on the radar through range and separation scales and position cues imprinted on the template. The template also has a series of apertures which allow direct marking of aircraft position on the radar scope without removing the template.