Abstract: A pulse detection system comprises, in series, a pulse amplitude detector, pulse width detector and a recorder. The pulse amplitude detector comprises a voltage comparator having an input for receiving a voltage pulse, a reference d.c. voltage input, a ground and an output for producing an output voltage when the input pulse equals a predetermined fraction of the reference voltage. The pulse width detector comprises a positively-triggered monostable having: a trigger input connected to the comparator output, a ground, a RESET, a RESET reference, a reference d.c. voltage input connected through a resistor to the RESET and through a capacitor to the RESET reference, and a Q output; and a positive-going clocked flip-flop having a clock input connected to the Q output of the monostable, a data input connected to the comparator output, a ground, a reference d.c. voltage input, a RESET, and a Q output connected through a delay resistor to the RESET and through a capacitor to ground.

Abstract: Armor-piercing rounds having improved penetrators therein providing high al moments of inertia, and hence, high gyroscopic stability which is attributable to the variously configured non-circular cross-sections of the penetrators.

Abstract: A rate sensitive system for a seismic sensing pedestrian range containment evice monitors the shift in relative energy of a footstep as a function of footstep rate. A rate sensitive relative energy measurement circuit operates in conjunction with the detection of human footsteps and classification of personnel to limit the detection range of a seismic sensor to specific distance range.

Abstract: A light screen device for measuring the velocity of a projectile comprising laser disposed opposite to one end of a first plane reflecting mirror and inclined with respect thereto to cause a laser beam to strike the first plane reflecting mirror and in turn to reflect the beam to a second plane mirror and successively reflecting the beam back and forth vertically to higher points on each mirror surface forming a criss-cross rectangularly shaped light grid network therebetween. A light detector is disposed axially in line with a reflected beam to intercept and detect the continuing presence thereof and to generate a pulse signal in response to the projectile passing through the light screen to stop a counting circuit.

Abstract: A switch actuator, for safe and arm applications requiring utmost dependaity in order to preclude a premature or false arming sequence, utilizes a plurality of simultaneous input signals from independently coded pneumatic optical and electrical sources to drive a rotary switch. A rotary fluidic valving plate is used to decode non-uniform input optical signals into a uniform cyclical output pressure signal which is used to drive a fail-safe, reversible pneumatic piston type motor. A geneva mechanism is used to mechanically couple the prime mover to an output gear.

Abstract: A circularly shaped rimmed gasket, having an axially aligned central bore ansversely disposed therethrough, utilizes oppositely disposed annular grooves located in exterior faces of the gasket to form sealing surfaces intermediate two axially positioned raised boss sealing faces of a pipe flange. The projecting sides of the rim of the gasket nestles around each flange boss helping to axially align the pipe flanges with minimum effort and visibility.

Abstract: A thread protector and seal device, suitable for use with automated shell lling equipment utilizes a flanged semi-rigid tubular member having a plurality of longitudinally disposed slots on one end thereof to facilitate insertion into the nose end of an internally threaded projectile. A compliant member is molded into interior and exterior annular grooves of the insertion end of the thread protector to prevent the accumulation of explosive material from entering the threaded fuze area of the projectile during a loading operation.

Abstract: A propellant charge is assembled by stacking together a plurality of extrd longitudinally grooved polygonally shaped high packing density propellant grains. An hexagonal configuration provides for nearly full utilization of the circular volume of a propellant chamber. Selective location of a plurality of perforations and grooves through each grain member is used to provide propellant charge assemblies having uniform web distribution and improved burn characteristics.

Abstract: An antirunaway device for a hand grenade fuze utilizes a spring biased deted firing pin-slider assembly to interlock a torque biased rotatably held detonator assembly in an out-of-line "safe" position when the biased firing pin-slider assembly senses the absence of a restraining, properly functioning, axially aligned dashpot timer assembly. A slider blocking member is depressed into a groove provided therefor, by the slider assembly, to allow the detonator assembly to rotate into an in-line "armed" position when the slider assembly mechanically senses the presence of a properly functioning dashpot timer assembly, but remains in a blocking position when the timer is not properly functioning.

Abstract: 1. A device including an expendable cartridge-barrel assembly comprising a cartridge casing forming a barrel, the wall thickness of said barrel being at least equal to about the diameter of the bore therein, a retainer affixed to and rearwardly of said casing, a high energy propellant enclosed within said assembly, a primer within said retainer and communicating with said propellant, a projectile frictionally fitted within and extending along the bore of said barrel and having a rear end in proximate relation to said propellant, said projectile being designed for high sectional density and minimum drag with water, and a watertight seal affixed to a front end of said cartridge-barrel assembly.

Abstract: A fuze setting device utilizes a plurality of detented, rotatable, magnet sitioning time setting rings and an encoding disc for controlling the amount of electrical pulses that a timing oscillator is required to subsequently generate to fill an "and" gate controlled multi-stage counter. The counter after being filled generates a fuze initiating signal. A setback detented electromagnetic pulse generating despin operated sensor assembly is used in combination with the oscillator to generate electrical pulses for partially filling the counters in accordance with the relative angular positioning between the magnetic source setting rings and the pole pieces of electrical coils which generate a stop pulse to regulate the number of pulses necessary to fill the counters.

Abstract: A spin fired anti-aircraft projectile is fuzed to dispense circularly shaped propeller disks into a standing, ascending or descending type of fragment cloud in front of an invading target. The propeller disk warhead is designed to release a plurality of rotating disk shaped fragments having serrated peripheral cutting edges thereon which are capable of penetrating and incapacitating fast moving enemy aircraft.

Abstract: A plurality of radio frequency shielded electrical break wire sensors for a issile fuze circuit are peripherally positioned on the circumferential outer surface of a warhead body. A first wire sensor provides an electrical indication of contact of the warhead outer surface with a target structure and initiation of the fuze electronics in response thereto. A second printed wire sensor is operatively positioned underneath the first sensor to provide an electrical indication of an impending break-up of the warhead body structure and initiation of the missile fuze.

Abstract: An electrolytic cell which comprises a standard calomel electrode supported n a container containing an etchant and a sample of the alloy or metal to be etched are electrically connected to a millivoltmeter or an X-Y recorder. The variation in potential generated by the electrolytic cell is measured as a function of time and used to determine the optimum time at which to end the process.

Abstract: A portable spherically shaped pressure vessel utilizes a noninterfering sle pivot internally operable door slidably supported against an interior wall surface for safely storing and transporting an improvised explosive device therein. The door in its open position provides rapid unobstructed access through a conveniently positioned reinforced port hole and rapid closure of the port with complete sealing of the explosive contents contained within the vessel.

Abstract: A split-ring hermetically sealed pressure enclosure is positioned around a ap formed between a shell body and base plate of a projectile for the purpose of measuring an unknown gap volume and comparing it to a standard acceptable volume. The system utilizes a gauging system which pressurizes both the known volume of the standard volume and unknown volume of the test body simultaneously and then measures the rate at which each volume is depleted. Fluidic sensing, amplifying, and gating systems are utilized for generating an output signal responsive to comparative pressure rate changes of both standard and test volumes. The output signal is used to operate a visual, biased, no-go, go pneumatic indicator.

Abstract: A dial humidity indicator for containers utilizes a shock mounted sensing chanism having an expansible tensioned sorption element, and a pressure-tight, window-type plug to position the indicator in the container wall. The present device, when mounted in the wall of an hermetically sealed shipping container, provides rapid, accurate and continuous readings of relative humidity at the extremes of relative humidity and temperature under severe shock and vibration conditions.

Abstract: An electronic circuit is used to continuously determine the nitroglycerin ncentration in a sample solution of an electrochemical monitoring cell by controlling the applied potential to a cathode electrode of a three element cell. The cathode of the electrochemical cell is maintained at a desired potential by supplying a square wave modulated negative potential signal thereto and then measuring the difference in cell current between the cathode and anode elements at the start and finish of the pulse signal with a demodulator. Current from any additional reactions that are constant or that occur above a desired reduction potential within the electrochemical cell are automatically cancelled by a gating circuit which is electrically coupled to the demodulator.

Abstract: A spring loaded trip string holding bobbin is deployed when a gas pressure upply is activated. The gas pressure forces a diaphragm member to move a detented biased camming release ring from a locking position to a deploying position. The initial movement of the release ring permits detent balls to move and release a sleeve element which holds the bobbin locked to a sensor assembly and initially prevents the movement of a post holding a breakwire sensing element which is attached to the personnel extended trip string. The release ring after a short interval of time automatically returns to its initial position unlocking the bobbin post so that the breakwire and the device will be responsive to string disturbance.

Abstract: A detonator fuze train combination utilizes a thin centrally initiated disc haped lead azide primer's detonation waves reflected from interior walls of a circumambient metal cup shaped housing member to peripherally detonate a secondary output charge. The output charge produces a detonation wave which converges radially inwardly to generate an enhanced jet output. The resultant jet output is capable of initiating a remotely positioned, RDX, high explosive acceptor.