Abstract: A circuit for supplying clock or timing pulses to a projectile fuze, comprising an astable multivibrator possessing field-effect transistors and a supply capacitor for controlling and supplying the multivibrator. Between the multivibrator and the supply capacitor there is connected in circuit a resistor and parallel to said resistor there is connected a trimmer capacitor for stabilizing the frequency of the clock pulses.

Abstract: A detonating device principally intended for detonating an explosive charge in a well or borehole, and of the type which is actuated by pulling upwardly on a non-electrical line also used to lower the device into position. The device includes self-contained time-delay circuitry which requires a sustained mechanical actuating pull on the line for some predetermined time before an attempt is made to detonate the explosive. The circuitry includes a command switch actuated by pulling on the line, and a safety switch which must be closed before the command switch is closed, either manually or by hydrostatic pressure in the borehole. The circuitry locks in a safe condition if the command switch is closed first, or if one attempt has been made to fire the explosive, whether successful or not, thus allowing removal or repositioning of the device with complete safety.

Abstract: In a nuclear fuel rod cluster in which the rods are supported axes parallel and held in spaced relationship by transverse grids, a number of auxiliary coolant spray pipes are positioned amongst the fuel rods. At least one grid has attached to it a target plate which extends between the fuel rods to deflect auxiliary coolant sprays on to the surfaces of portions of the rods which would otherwise not be cooled by the spray.

Abstract: This invention relates to a servocontrol system for a weapon such as a missile which is a shoulder-launched, infrared-homing, guided missile which provides frontline troops with effective air defense against low altitude enemy aircraft. The weapon, described herein for purposes of illustration, consists of a missile and launcher combination which can be readily transported and operated within the normal environments associated with ground forces in a combat area. To meet the size, weight, and performance requirements, the missile achieves passive homing guidance by using a space-stabilized, infrared-seeking-head control system to generate guidance signals for a single-channel, variable-incidence wing control system working in conjunction with a rolling airframe.

Abstract: A device for firing an electric detonator which comprises a pressure deformable sealed waterproof housing containing an electric energy source of ignition of a detonator and means responsive to the deformation of the housing for actuating the energy source. The housing preferably comprises a bellows element and the energy source is preferably a piezoelectric element. The device is useful for multiple shot blasting wherein one explosive charge is initiated by the shock wave from a previously exploded charge.

Abstract: A nitrate or nitroparaffin-base liquid exlosive composition having a small critical diameter yet which is essentially free of particulate metals such as may render such compositions unduly brisant or susceptible to decomposition, and which is consistent with the safety requirements of geological fracturing, including an inert solid ballistic modifier having a sonic velocity substantially different from that of the explosive material in the composition and an average particle size of less than 10 microns, forming from about 5% to 20% by weight of the composition.

Abstract: Tracking and sighting apparatus for use in a missile guiding system. The apparatus receives visible light from a target, along with infrared light from the missile itself. Initially a beam splitter separates these different types of light. The beam splitter is followed by separate objectives, one of which is disposed in the path of infrared light and is highly transmissive and suitably refractive to this light, while the other objective is in the path for visible light and is highly transmissive and suitably refractive for this light. The two objectives focus the infrared and visible light, respectively, into a tracking receiver and a sighting ocular.

Abstract: A cylindrical warhead having spiralling channels disposed along the peripy thereof. A center portion of the cylinder contains an explosive and axially located detonators.

Abstract: A hypervelocity ammunition round in which a spin stabilized artillery projectile contains a plurality of subcaliber gun tubes for launching subcaliber spin stabilized projectiles from the artillery projectile at a predetermined point in its trajectory, as the artillery projectile performs as a moving gun platform to more effectively defeat a multiplicity of targets through the kinetic energy impact of the subcaliber projectiles.

Abstract: A nose mounted obscuration fuze adapted to produce a near surface burst w the fuze approaches or starts to penetrate a target. The nose of the fuze is provided with a pair of relatively broad surfaces, one of which transmits light from a light source across an air gap forming a sensing area to a light detector in the other broad face of the sensor. The light transmission is measured between the two faces, and any significant change in light transmission through the air gap, such as when the fuze penetrates snow, activates the fuze.

Abstract: A fuse or the like, for the ignition of a detonator, partially cut at an angle to its longitudinal axis to expose the ignition train, having an electrically actuated ignition device mounted in the cut in contact with the ignition train.

Abstract: The present invention relates to a waterproof and rigid container for slurried explosives which comprises a tube or shell formed by superimposing partially or wholly a shrinkable film on paper and rolling the film and paper into the shape of a tube or shell of continuous and successive layers of the film and paper, the inner layer being the film and the outer layer being the paper, and thereafter crimping the tube or shell to one end, the tube or shell so formed being externally coated with a suitable waterproofing medium under predetermined conditions thereby causing a partial shrinkage of the film and, when required, the waterproofed tube or shell is filled with an explosive and the filling or mouth end is crimped and waterproofed forming a rigid and waterproof cartridge.

Abstract: An elongated tubular container filled with a liquid explosive charge is provided with a detonator at one or both ends thereof to provide a linear explosion along the length of the tubular container. The tube may be buried in the ground by a tube burying plow, suspended by floats in water, laid on the ocean bottom, etc. for forming ditches, providing seimic sources, etc. By providing a small tube in a larger tube, a potential explosive liquid can be activated by an activator contained in the small tube, by removing the small tube from the large tube through squeezing rollers at one end of the large tube.

Abstract: Self-defense device has a charge of liquid, preferably substantially water so that, when the device is actuated, it is heated and expelled from a nozzle to be directed at an assailant. Heating of the water may also develop gas pressure which causes the expelling of the water, or heating may cause boiling to result in both pressurization and water expulsion. Black powder and cordite comprise mixtures which, when combusted, cause heating of the water and expelling of the water by separate gas generation. In other cases, a material can react with the liquid to cause expelling of hot liquid. An example of this is alkaline metal, such as sodium, being admixed with the water when expelling is desired.

Abstract: 1. In an optical tracking system, lens means defining an optical axis, radiant energy responsive means spaced from said lens means along said optical axis, a pair of radiant energy directing means disposed to be traversed by radiant energy passing along said optical axis from said lens means to said radiant energy responsive means, drive means for simultaneously rotating said radiant energy directing means whereby to rotate a beam of received radiant energy and cause the same to nutate about the optical axis and to trace a substantially circular image upon said radiant energy responsive means, and means for angularly adjusting one of said radiant energy directing means relative to the other to modify the radius of said circular image.

Abstract: The invention provides an angular position reference device for measuring changes in the attitude of a moving body and comprising a closed chamber filled with a liquid and rotatable about an axis by drive means, and position sensing means such as a vane assembly mounted within the chamber for rotation with the liquid independently of the chamber about an axis co-axial with the chamber axis and which, with the liquid, defines a reference position fixed in space in a plane normal to said axis, and which co-operate with the chamber to define a datum position of the chamber relatively to the reference position, in use, rotation of the chamber about said axis tending to cause relative rotation between the chamber and the liquid from said datum position which is sensed by the position sensing means which produces an output proportional to said rotation, said output so controlling the drive means to rotate the chamber to return the chamber to the datum position and, in use, providing a measure of a change in the pos

Abstract: A shaped-charge projectile having a cylindrical chamber containing a main charge, a fluted liner projecting into the chamber and means causing the liner to expand upon impact with a target and prior to firing of the main charge to thereby increase the penetrating power of the projectile. According to one aspect the means comprises a pyrotechnic material located within the liner, according to a second aspect the means comprises a ram driven into the liner and according to a third aspect the means comprises a plurality of rigid rods fixed to the flutes of the liner.

Abstract: The forward bulkhead of a warhead casing centrally formed with a cylindri indention which causes a forward jet when the warhead is detonated.

Abstract: A feedback PDM encoder and method is presented which permits utilization of neumatic pulse duration modulation (PDM) actuators with potentiometer position pickoffs in a digital autopilot loop. The actuator is directly driven by a signal derived in the digital autopilot which is in the pulse duration modulation (PDM) format. This signal is derived within the autopilot digital computer using conventional digital techniques. Analog feedback from the potentiometer which indicates angular excursion of the actuator is formatted into a PDM format. This method yields all signals necessary to operate the actuator in a closed loop missile control system.

Abstract: A remotely situated detonator is acoustically triggered to detonate explosives. Conduit means capable of propagating an acoustic wave is used to transmit a precoded acoustic wave signal from a transmitter to a receiver. The receiver is provided with means for converting the precoded acoustic wave signal to an electrical output signal to actuate the detonator and decoding means for discriminating against noise signals. For safety reasons, time delay means may be provided to delay generation of the acoustic wave signals until after a predetermined time period. The aforedescribed detonation system may be utilized to rejuvenate or activate subterranean petroleum, gas, geothermal steam, or water and the like.