Abstract: An active optical tracking system for air-to-air type missiles of relatively small dimensions having a pulsed laser transmitter operating through a gimbaled mirror system and a reflection receiving system connected to the guidance and control unit of the missile to direct it to a target.

Abstract: An optical shaft encoder system for measuring electrically powered motor shaft speed, including a system for increasing the sinosoidal encoder output waveforms by a multiplication factor, converting the product of the multiplied waveforms to square waves, comparing the waveforms to a reference waveform and generating a correction signal which is fed back to the motor through servo circuitry, thereby correcting errors in motor shaft rotational speed.

Abstract: A method for adding a residual compressive stress to the rim of a turbine disk by heating the disk to a uniform high temperature, then insulating the rim from the remainder of the disk and cooling to a temperature wherein the rim yields in tension.

Abstract: A system for jamming continuous wave radar type proximity fuzes used on surface-to-air missiles where the fuze requires an increase in return signal power level and a rapid frequency change for detonation. The system basically includes a receiver, amplifier, and transmitter. A received fuze signal is filtered and square wave modulated then sent to a first traveling wave tube for amplification. The signal is then amplified again by a second traveling wave tube which is modulated by a transit time modulator which continuously varies the phase shift through the tube in a linear fashion. The linear variation in phase shift is the equivalent of a displacement in the frequency signal being amplified. The signal is then reradiated to the missile giving the fuze a target sensing causing it to predetonate.

Abstract: An embedded stress sensor gage for use in solid fuel rocket motors and the like consisting of a modified bridge circuit containing temperature sensitive resistive elements and a pair of series connected resistors coupled in parallel with the bridge. A comparison of the voltage at the midpoint of the series connected resistors and the output voltage of the bridge and the voltages at the active resistive elements provides information from which it is possible to determine the change in gage element resistance for each temperature and stress condition.

Abstract: In a tubular plasma display consisting of an array of parallel glass capillary tubes sealed in a plenum and attached to a rigid substrate, having different thermal expansion properties limiting operational temperature range, the improvement being an extension to the substrate creating a gap which separates the tube manifold from the nearest point where the tube and substrate are bonded.

Abstract: A system for reflecting a collimated beam of radiation with two mirrors including a gimbal mount, steering rod, an articulated spatial parallelogram linkage for one mirror, a pivot joined to one joint of the parallelogram for the second mirror and a pivoted frame and parallelogram mechanism for supporting the mirrors.

Abstract: A system for steering a mirror, comprising a mirror mounted on a gimbal provided with a steering rod and incorporated into an articulated spatial parallelogram linkage to allow for steering the mirror in a precise and controlled manner.