Abstract: A wide angle seeker for missile guidance systems and the like which utili a dual motion mirror in an optical transfer system to allow a missile sensor to be mounted in a stationary position in the missile body remote from the seeker.

Abstract: A slotted plate type contact is disclosed for simultaneously terminating two wires of small diameter which are inserted simultaneously in a first slot portion of the contact and are automatically diverted into separate wire terminating slots.

Abstract: An air dropped penetrator or projectile for a gun, (herein referred to as the munition), adapted for use in fracturing and penetrating a hard concrete target or a similar highly resistant target. In the most basic and generic form, the munition includes: a forward kinetic energy penetrator section, an aft follow-through ungula-shaped penetrator section, and a frangible intermediate section in the form of a tube which releasably interconnects the forward section and the aft section, thereby forming an integrated munition. Upon impact of the munition on the target, the frangible intermediate section breaks, thereby separating from the forward and aft sections, and also separating the forward and aft sections. The forward section fractures the concrete target and penetrates it; and, the aft section follows-through the fractured and penetrated target.

Abstract: A piezoelectric transducer comprising a piezoelectric cylinder whose axis is coincident with the electrical axis and placed between two rigid pistons perpendicular to the axis and of greater diameter than that of the cylinder. The pistons carry electrodes on their external faces. The external faces and the lateral faces of the pistons are acoustically decoupled such that the only faces active are the peripheral surface of the cylinder and the inner surfaces of the pistons extending beyond the peripheral surface of the cylinder.

Abstract: 1. A flechette cartridge comprising an external cartridge casing, an internal flechette projectile having protruding stabilizing surfaces, a plurality of individual sabot segments encompassing said projectile and intermeshing with the said protruding stabilizing surfaces to align said projectile with the bore of the firearm in which said cartridge is fired, said projectile-sabot segmented unit having an axial length greater than the axial length of the protruding stabilizing surfaces on said projectile thus supporting the forward portion of the projectile against buckling as the unit proceeds down the bore of the firearm, said sabot segments when intermeshed with said projectile forming a circle of diameter equal to or greater than the diametric circle encompassing the said protruding stabilizing surfaces, explosive means to propel said projectile and suitable means to support said projectile and segmented sabots against thrust of the powder gases and to obturate said powder gases.

Abstract: An improved depth sounder combines a multi-beam ultrasonic transducer with a multi-range selector switch with provisions for automatically selecting a particular beam pattern for a particular range setting. The relationship between beam patterns and depth ranges is uniquely chosen to provide equal areas of insonification at each full scale range setting. The inventive system also provides an additional scale on the multi-scale range dial which shows the diameter of the insonified region in the vicinity of the reflecting target in addition to the target depth.

Abstract: A firing cap assembly has an interior percussion charge for producing a fire jet along a path in a predetermined direction which extends generally from one side of the assembly towards the other side thereof. The assembly is inserted into a casing having a base wall which extends across the path of the fire jet, and side walls which extend generally along the predetermined direction and which have bendable wall portions at said one side of the assembly. The casing and the assembly mounted therein are both inserted into a cavity of a firing cap carrier having bendable flange portions at said one side of the assembly. The flange portions are bent in direction generally transversely of the predetermined direction to a position in which the wall portions are located intermediate the flange portions and said one side of the assembly so as to form a corner region with said one side of the assembly.

Abstract: A stab type isolating connector for offset joints in enclosed high voltage electric bus apparatus comprises a removable contact rod for connecting laterally offset terminal ends of linear bus conductors within an enclosing sheath. The contact rod is slidable through a transverse passage in one terminal end into and out of engagement with a contact socket in the other terminal end, making contact with both terminal ends in its fully engaged position. Preferably the contact rod is tubular and slides over a guide rod secured within the contact socket. The guide rod may be sectional so that after seating of the contact rod a section of the guide rod may be used to secure the contact rod in engaging position.

Abstract: A lightweight pyrogen igniter assembly including an elongated molded plastic tube adapted to contain a pyrogen charge and to be inserted into a rocket motor casing for ignition of the rocket motor charge with a molded plastic closure cap provided for the elongated tube and including an ignition charge within the cap for igniting the pyrogen charge and an electrically actuated ignition squib within the cap for igniting the ignition charge. The ignition charge is contained within a portion of the closure cap and it is retained therein by a noncorrosive ignition pellet retainer or screen which is adapted to rest on a shoulder of the elongated tube when the closure cap and tube are assembled together. The interior of the closure cap and the exterior of the elongated tube are provided with matching tapered spiral buttress threads to serve as the attachment means therefor.

Abstract: A hydrophone is disclosed which has a cardioid-shaped directional lobe for elective reception of acoustic waves. The device comprises a cylindrical casing having an acoustic window in a rear member thereof and a piezoelectric transducer supported by an annular internally groove front member. A bottom member located in the opening of the front member and spaced from the piezoelectric transducer is provided with a wall element. A ring element is located in the groove of the front member. Cavities are thus formed between the bottom member of the wall element and between the ring element and the front part of the casing to form thin sheets of air for producing acoustic decoupling to permit reception of acoustic waves impinging on the rear member of the casing and minimizing the effect of acoustic waves received from other directions.

Abstract: A tool for reconditioning and reloading spent shotgun shells is disclosed. The tool has a movable table upon which is mounted a rotating die cage. The cage contains a series of floating dies for sizing the spent shells. A fixed tool head at the top of the apparatus carries a series of filling tubes and crimping dies. Means for rotating the die cage and the operation of the floating dies is described.

Abstract: The invention relates to improvements in armor-piercing projectiles formed in two component units, a first unit being a hollow envelope or shell, which is impact-resistant, and a second, being a ballast of a high specific weight, which is mounted in the hollow cavity of the envelope. The ballast improves the piercing performance of the projectile without detracting from impact resistance.

Abstract: An acoustic transducer for simultaneously producing broadband sound sources n the conventional and overtone resonance modes. Two sets of ceramic and aluminum discs are fixed adjacent each other with the ceramic discs of each set facing one another across an air gap. By selection of respective relative diameters and thicknesses for the ceramic and aluminum discs, the transducer exhibits dual resonance output signals when excited by an input voltage.

Abstract: A brush spring and brush housing construction affording maximum operable brush wear without the danger of the brush spring contacting the commutator even if the brush might drop out of the housing. A hook on the brush end of the spring moves against an inclined wall of a tapered slot in the side of the housing and is directed to engage the end of the slot and be restrained from moving or twisting out of interlocking relation with the housing wall as well as being withheld from engagement with the commutator.

Abstract: Acoustic wave transducer comprising a sensitive element subjected on one face to the pressure variations of an external medium and on the other face to the pressure prevailing in an inner cavity of the body of the transducer, associated with automatic regulation means whereby said cavity communicates either with the external medium or with a source of fluid at a pressure exceeding that of the external medium, depending on the pressure level in said cavity as compared to that of the external medium.

Abstract: 1. An apparatus for filling sealed containers with a predetermined quantity f liquid comprising a reservoir for the filling liquid, a separator container under vacuum, a filling nozzle having three orifices, one of the orifices having a pipeline connection to the separator, a second orifice having a pipeline connection to the separator and the third orifice having a pipeline connection to the atmosphere, said pipeline connection to the reservoir having a valve therein opening to a source of pressure and means for opening said valve when the desired amount of liquid has entered the sealed container.

Abstract: An improved-performance transducer for deep submersion operation.An axially operating sandwich type transducer has its active part arranged in a housing designed and embodied to form a filter for decoupling the active face. Such a transducer is usable in systems for underwater acoustics.

Abstract: A simultaneously transmitting and receiving multipath sonar antenna comprs an acoustic lens which focuses received acoustic beams on a focal surface, and at least two intercalated groups of piezoelectric transducers disposed on the focal surface of the lens. The transducers of the at least two groups are tuned to different frequencies, and the transducers of each group are excited with a phase difference between one column and the next column of the same group.

Abstract: A projectile for heavy armor formed of a casing having at its forward end a double cone construction, one surrounding the other, to provide an annular space between the cones. This space is filled with an explosive. The inner cone is located nearer the forward end of the projectile and is provided with a series of flutes extending from the apex toward the outer edge. The recesses formed by the flutes contain a part of the explosive provided within the annular space between the cones. Thus, the flutes form shaped charges and since the interior of the cone is presented to the forward end of the projectile, the force of the explosive on contact with the armor produces not only an opening in the target but also linear gashes which extend radially outward from the opening. The remainder of the projectile is formed of a hollow penetrator body which contains explosive for internal blasting and there is a jet propelling explosive at the rear end of the casing for propelling the projectile through the air.

Abstract: A chaff cartridge is made up of a plurality of chaff interpackets contained in subprojectiles. The subprojectiles are each provided with fins and the fins of each subprojectile in a chaff cartridge provide a different drag to cause the spacing out of the subprojectiles. The fins, additionally, cause the subprojectiles to rotate and thereby radially disperse the chaff.