Abstract: A spin stabilized projectile is arranged to have variable flight stability. he projectile has a casing with a cavity that contains a given mass of fluid. The cavity is shaped to provide a balanced flow of fluid with respect to the axis of spin as the projectile is trajected. This balanced flow alters the flight stability of the projectile.

Abstract: A spin stabilized projectile is arranged to have variable flight stability. he projectile has a casing with a cavity that contains a given mass of fluid. The cavity is shaped to provide a balanced flow of fluid with respect to the axis of spin as the projectile is trajected. This balanced flow alters the flight stability of the projectile.

Abstract: A plurality of inertially responsive balls are disposed intermediate a hong of a spin stabilized projectile and a critically angled cam incline member for preventing the shift of stacked cargo during projectile flight. The combination of projectile spin and critical cam angle of the incline member is used to provide centrifugal and holding forces of sufficient magnitude to produce a self-locking taper effect which restricts loose stacked cargo members from causing destabilization and reduction in projectile range.

Abstract: A testing device for determining the lubrication properties of hydraulic ids under elevated pressures and temperatures comprises a pressure-tight housing defining a central cavity including a continuous passageway for the fluid, a chuck assembly located within the cavity which holds a plurality of test balls in fixed position, a rotatable support structure securing an upper ball in centrally disposed contact with the test balls, and a screw-threaded adjustment adapted to move the chuck assembly to apply pressure between the test balls and the upper ball. The present testing device is of simple and inexpensive construction and reduced size, and provides data respecting the test fluids which accurately reflects actual working conditions.

Abstract: An electronic velocimeter for measuring the muzzle velocity of a projectile mploys a conductive coil mounted between the muzzle and an annular conductive shield. The shield and coil are insulated from each other and encircle the trajectory of the projectile. An oscillator means for generating an oscillator signal is coupled to the coil. This oscillator means is responsive to the projectile passing through the coil. A timing means responds to the oscillator to produce a timing signal. This timing signal represents the transit time for the projectile to traverse a predetermined interval of the trajectory of the projectile. Knowing this transit time the velocity is readily obtained.

Abstract: A short delay burster for a canister ejecting projectile utilizes a multish screen operatively disposed in a choke configuration housing and held therein by an orificed retainer to permit the delay to be initiated by an expulsion charge while withstanding the high pressure shock wave of the expulsion charge explosion.

Abstract: A forward end of a cup shaped tubular cartridge case utilizes a divergently apered exterior wall and a straight sided interior wall to permit initial assembly of a fully telescoped projectile therein and subsequent reliable sealing of the cartridge case by a convergent seal member. After sealing the divergently tapered exterior wall of the cartridge case is converted to a convergently tapered wall preventing separation of the seal member from the cartridge case during projectile launch.

Abstract: An improved safe and arming device for isolating the fuse from the main eosive charge in spin stabilized shells to prevent premature detonation of such shells. The improved safe and arming device comprises a housing adapted to be positioned intermediate of the fuse and the main explosive charge of such shells for rotation therewith about a shell spin axis when the shell is fired, a rotor mounted in the housing for rotation about a rotor axis, and a rotatable control member engageable with the rotor and being rotatable about an axis extending in the same direction as the rotor axis for controlling the rate of rotation of the rotor. The rotor is positionable in a desired start position and is adapted to rotate in response to rotation of the shell to an armed position to communicate a detonation signal from the fuse to the explosive charge.

Abstract: 1. In a demolition unit, a closed container having a shallow depth relative to its transverse cross section, and having a high explosive charge contained therein, a completely embedded non-explosive shock absorbing mass centrally located within said explosive and extending laterally to within a short distance of the side walls of said container, a facing plate projectile of substantial density secured to and substantially coextensive with the top wall of said container and in contact with said explosive, and means below said non-explosive mass for initiating said explosive charge, the detonation wave of said explosive charge striking said face plate as a flat wave to propel said plate intact toward a target.

Abstract: There is disclosed an improved electronic system for measuring in-bore teetry information for tube-fired munitions where high frequency transmission is desired to telemeter several frequency channels. The system includes a subsystem for sensing acceleration located inside a tube-fired projectile; a subsystem for conditioning and filtering a signal input; a subsystem for converting analog data by use of a Delta-Modulation method; a subsystem for binary recirculation, the same accomplishing repetition of measurement of the in-bore information; a binary shift register for conveying input digital data to a ground station facility through a transmission link; and a recording means placed in a ground station facility to accomplish storing, displaying and recording in-bore information.

Abstract: A device for testing phase inversion of a circuit includes a signal generator having an assymetrically shaped positive phased test signal output electrically connected through a buffer circuit to the input of the circuit under test. A differentiator circuit electrically connected to the output of the test circuit, produces in response to the test circuit output, rectangular pulses whose amplitudes are proportional to the slopes of the test waveform. The differentiated output signals are isolated into positive and negative signals by a plurality of peak detectors whose outputs are fed to a summing amplifier. The summing amplifier amplifies the difference between the positive and negative isolated peak voltages and in turn drives a polarity indicating device which was previously calibrated to indicate a positive or negative polarity as either a phase or non-phase inversion. An alternate mode of measuring pulses directly and bypassing the differentiator is also provided.

Abstract: A gauge for measuring differential pressure in an explosive blast wave, w tunnel, or shock tube, utilizes a tubular housing having a conical axially aligned inlet port, a cylindrical cavity which is divided into fore and aft sections by a transversely disposed pressure responsive diaphram. A plurality of symmetrically disposed off-set stagnation inlet tubes and a plurality of circumferentially positioned flow compensated side-on overpressure input slots are used to communicate with each of the respective fore and aft sections of the cavity. Variation in stagnation and side-on overpressures cause diaphram movement which is detected by a friction-free sensing member.

Abstract: A dual-mode firing mechanism for a high-rate-of-fire rifle capable of fir small arm cartridges conventionally by the application of a hammer, and inertially, bypassing the trigger mechanism, to provide sustained fire of a discrete number of cartridges in a burst. A trigger hammer fires the first round and simultaneously locks the firing pin in a firing position relative to an operating rod assembly. The operating rod assembly with the firing pin in the firing position, then cycles between a full forward or firing position and a short stroke rearward position in synchronism with fresh cartridges being inserted into the battery. The cycling continues until a last cartridge in the burst is fired. After the last round the mechanism returns to its original or non-firing position, and is ready for the next burst. The mechanism is rapid, for example, approximately 4,000 to 5,000 shots per minute can be fired in each three round burst.

Abstract: An improved instrumentation coupling for use in a conduit system carrying lten explosive material in a continuous melt-pour process. The instrumentation flange assembly comprises a pair of self-aligning pipe flanges fixedly connected to a specially designed body housing member for holding temperature and pressure sensors in the molten explosive without leakage of explosive material from the conduit, and for enabling quick removal of the sensors for replacement or calibration purposes.

Abstract: In flight guidance of a missile is provided by a plurality of orthogonally isposed wing panels which can be rotated by a self-centering biased torque producing lever-ball joint assembly. A plurality of solenoids, operatively positioned proximate to a rotary cam member, are individually selectively activated to engage the rotary cam member which inclines the torque producing lever-ball joint assembly and rotates the wing panels in a desired direction.

Abstract: A multi-lobed partial free-floating cam mechanism is used to cock and sucsively fire a plurality of biased firing pins without allowing a "hang-fire" condition to exist. Initial lifting of the cam mechanism by pivot pin rollers acting on an inclined cam slot stores enough energy to drive the cam through its final rotational mode.

Abstract: A gravity sensing disc slide interrupter in combination with dual chambered etonating booster charges is used to automatically select one of a plurality of mine covers to be removed from a randomly ground oriented mine in order to insure maximum leathality against a target. Reliable selection of the mine cover to be explosively removed is accomplished by reduction of gap distance between the output side of a transfer lead charge and the input side of detonating fuze booster charges.

Abstract: An analog signal is processed through a lowpass filter and then regularly mpled at different sample times by a plurality of charge coupled devices. The outputs of the charge coupled devices are then summed and applied to a second lowpass filter which acts to produce a reconstructed and delayed version of the original analog signal. With this arrangement the time delay associated with each charge cell of the charge coupled devices is a whole number multiple of the effective sampling period of the system, and significant decreases in charge transfer distortion are achieved.

Abstract: A fail-safe pneumatically operated by-pass sampling valve suitable for use n hazardous chemical processes utilizes a manually operated spool valve to initiate a pneumatically operated piston driven crank to rotate a sampling valve. The sampling valve withdraws a sample amount of fluid from a process line without disturbing normal process flow. A pneumatically connected spindle valve and a plurality of limiting valves are proximately positioned and operatively connected to the piston to automatically move the piston actuating member from a normally closed non-sampling position to a sampling position and then back to a normally closed non-sampling position.

Abstract: A high pressure adjustable nozzle utilizes a vented piston valve in cooperation with a low torque hand adjusting cam element and control pin to easily open and close the nozzle orifice. Fluidic line pressure is applied to the fore and aft section of the piston valve to create forces which can adjustably regulate the flow of the nozzle from an infinitely variable full open valve position to a full closed valve position.