Abstract: A flat slip ring which is larger in diameter than a conventional slip ring/brush assembly is attached to the rotatable unit concentric with and facing axially with respect to the shaft to carry the conventional slip ring/brush assembly. A circular brush is mounted on the housing of the slip ring/brush assembly concentric with the shaft and facing the flat slip ring. An electrically conductive spring urges the circular brush into contact with the flat slip ring and provides a low impedance ground from the rotatable unit to the housing of the slip ring/brush assembly.

Abstract: The range corrector circuit uses two counters, one for the apparent range (R.sub.a) and one for the correct range (R.sub.c), and a random access memory (RAM). The R.sub.c counter is continuously incremented linearly and the R.sub.a counter is incremented in accordance with a range correction equation. Both counters are reset to one every time a transmitter pulse is received. A linear sweep is also initiated on the plan position indicator (PPI) display of the bistatic passive radar at that time. Target returns are entered into the RAM at the address specified by the R.sub.c counter and are read out of the RAM and applied to the PPI display at the address specified by the R.sub.a counter.

Abstract: Method for producing fine line circuit boards utilizing both sides thereof, with through-hole plating wherein the board is drilled and conductive metal clad, the surface is passivated and the holes and the surfaces are electroplated to a desired thickness. Thereafter the surface electroplate is peeled off the board, leaving the plating in the holes. Subsequently the board is masked in a desired pattern, etched to remove the cladding and form a circuit, and then the mask is removed and solder is applied to the plated holes.

Abstract: A missile jet tab actuator system for a thrust vector control coupled to aerodynamic controlled surfaces is disclosed. The device removes roll information present in commands to the aerodynamic surfaces. Only pitch and yaw information is thus supplied to the thrust vector control jet tabs. In this disclosure, the roll information is removed by a gear and slotted sleeve system. The resulting pitch and yaw output is used to drive the thrust vector control jet tabs. No separate set of independently powered actuators for such tabs is required.

Abstract: A rocket thrust vector control system including jet tabs and aerodynamic control surfaces is disclosed. The control system removes roll information present in commands to the aerodynamic surfaces and provides only pitch and yaw information to the jet tabs for the thrust vector control. The roll information is removed by a geared summing mechanism. The resulting pitch and yaw output is used to drive the thrust vector control jet tabs. The same powered actuators are used for both the aerodynamic control surfaces and the jet tabs.

Abstract: A method and apparatus for loading solder preforms on to the pins of a multiple pin connector. A positioning plate has open sockets in the pattern of the pins of the connector to be loaded, the sockets being sized to receive a single solder preform in each one. A slidable retainer fits into a channel below the positioning plate to partially close the sockets and retain preforms therein. Loose preforms are contained in a dam attached to the top of the positioning plate and are shaken into the sockets on a vibrator table. The dam and excess preforms are removed and the positioning plate is covered by a cover plate to hold the preforms in place. The connector pins are then inserted through slots in the retainer, through the preforms and through holes in the cover plate. The retainer is removed, allowing the preforms to drop on the pins and the loaded connector is removed from the apparatus.

Abstract: A sight system for providing closed-loop differential tracking control over gun aiming, utilizing visual and non-visual optical radiation to assist the gunner in acquiring and destroying targets as well as providing information to the gun control computer for automatic acquisition and firing. The sight is used in conjunction with a cooperative ammunition round which emits pulsed flashes at a timed interval after firing and upon impact. Portions of these signals are in the non-visible spectrum, and an invisible-to-visible converter is utilized to signal the relative location of the flashes to the gunner. A similar conversion is utilized to provide information on laser designator illumination and other non-visible radiation emanating from the target.

Abstract: A system which disperses a payload sequentially. The payload may consist of a number of discrete individual units or a long string of units. The illustrated and described embodiment of the system is utilized in a rocket for dispersing decoy material, such as aluminum chaff, in a sequential burst pattern. The concept may readily be applied to mortor type decoy rounds, other types of decoy material, or to other types of applications requiring a sequential dispersion of the payload thereof.

Abstract: Impact discriminating apparatus for missiles and the like comprises a plurality of impact sensors disposed in spaced relationship along the longitudinal axis, and near the nose, of the missile. Sensors, responsive to elastic domain impact stress or shock waves, are separately fed into pulse generators wherein output pulses of different widths are formed for each sensor, overlapping pulses associated with all the sensors being generated for rearwardly propagated shock waves caused by a direct hit, but not for forwardly propagated shock waves caused, for example, by a stabilizer fin striking tree branches or other non-target objects. The generated pulses are fed to a NAND gate which is activated to cause fusing or detonation of the missile only by the overlapping pulses respresentative of a direct hit. Blanking circuitry blanks out effects of rearwardly propagated shock waves which are merely reflections of forwardly propagated shock waves, in order to prevent unintentional fusing or detonation.