Abstract: A projectile carrying a Loran processor is directed to a target along a line, referred to as a lorhumb line, which is the locus of all points i for which TDA- TDA.sub.i /TDB- TDB.sub.i is constant. Any deviation results in a cross-track error directing the projectile back on a correct path to the target. No vertical tracking is necessary because the projectile is flown near to the target and caused to execute a ballistic foldover so that it travels vertically downward towards the target. During vertical descent an along-path error signal is generated to control the vertical fins of the projectile.

Abstract: A turbine blade having a porous hollow sheet metal airfoil and a base defining a platform, stalk, and root. The airfoil portion is integral with an extension which lies within the blade stalk, the base being cast around this extension. The cast metal lies around the blade wall and also through tubes welded from wall to wall of the extension. The stalk also includes an opening to admit air to the interior of the blade for transpiration through the blade wall.

Abstract: A rifle with a cylinder lock comprising a receiver, a breech bolt with a firing member, a trigger, and a spring actuated sear which in an operating position is in locking engagement between a shoulder on it and another shoulder on the trigger, the sear being depressed at firing by the firing member into an inoperative position, a safety mechanism having an "on" and an "off" position and cooperating with a ledge on the sear to lock the sear in either the operative position or in the inoperative position depending on the condition, that is locked or released, of the trigger.

Abstract: An underwater light unit is constructed to be placed together within simi units around a ship anchorage on the bottom of a body of water. The construction of the optical portion of the housing permits the uniform illumination of said bottom with a high intensity light so as to produce good silhouette in the volume of water space located above the light units, as well as permitting direct observation of objects on said bottom. The optical portion and base portions interfit in such a manner as to have their watertight integrity remain uneffected by nearby explosions. The housing and mounting stake are constructed and arranged so as to provide a low mounting height above the bottom, so as not to interfere with the passage of surface vessels through the illuminated water space.

Abstract: A side looking sonar transducer which has sound absorbing material extending forwardly of the active surface of the transducer elements to diminish the acoustic response over a predetermined zone for reducing the effect of erroneous reflection signals.

Abstract: A device for handling fuel, breeder or absorber rods of nuclear reactors, particularly liquid-metal cooled nuclear reactors, with a hoisting unit situated on a slotted rotary cover and with a remote control grip for grasping the rods, and means for moving the hoisting unit along the slot. Thus, rotation of the cover and movement of the hoisting unit along the slot permits the grip to be moved into position for transfer of any desired rod-shaped member. The slot in the reactor rotary cover as well as the handling device are enclosed by a shielding box.

Abstract: The shell includes a core wedged rearwardly in a shoe and attached by a glue joint to a destructible plastics skirt fixed to the shoe. The invention is particularly useful for small or medium calibre shells.

Abstract: A system for controlling the annular nozzle throat area (and hence the tht) of a solid-propellant rocket by means of a pintle or plug the position of which is caused to vary in response to pressure variations within the combustion chamber of the rocket.

Abstract: 1.

Abstract: A propellent-charge cartridge case which comprises a cartridge-case stub which has a cartridge-case wall and includes at least one part provided with a resilient gas check which can be pressed against a barrel wall. The cartridge-case wall is formed with an annular groove cut from the outside into the cartridge-case wall which weakens the cross section of the wall. A resilient insert fills the annular groove so that as gas pressure builds up within the cartridge case upon firing, the cartridge case stub is deformed in the region of the annular groove so as to reduce the size thereof and squeeze the insert out of the annular groove in gas-sealing manner against the barrel wall.

Abstract: A graphite jacket for a fuel element for nuclear reactors is made by placing a dry mixture of graphite and a powdered thermosetting resin in a mold without application of pressure and heating said mixture to thermoset said resin and then subjecting to a coking treatment. The coked jacket is then filled with a mixture of fissile particles and graphite and the complete assembly is closed and treated with a gaseous hydrocarbon at an elevated temperature to deposit pyrolytic carbon.

Abstract: A device is provided which is installed in a reactor prior to carrying out refueling operations and which accurately locates and isolates a selected core location to permit rapid withdrawal and insertion of fuel subassemblies at that location. A shielded plug designed to cooperate with the refueling apparatus is inserted into an access port in the reactor head. A structural shroud extends down from the plug and carries at its lower end a radially floating, hexagonal spreader tube with mechanisms to rotate it for angular alignment purposes and a linear drive for inserting it into the core. The upper end of the spreader tube serves as a guide for leading the fuel handling apparatus into alignment with the chosen subassembly.

Abstract: An electrostatographic developer mixture comprising finely divided toner particles electrostatically clinging to the surface of larger carrier beads, each of the carrier beads comprising a core particle surrounded by a thin outer layer of a poly(p-xylylene) polymer. Imaging processes of developing electrostatic latent images with the developer mixture are also disclosed.

Abstract: A process for simulating the infrared radiation in wave length and intensity and the spatially extended characteristics of the plumes of turbojet engines comprising burning fuel-rich solid gas generator compositions, comprising an organic binder, an oxidizer, and dispersed inorganic particles, of a character such that venting of the combustion products directly into the atmosphere or venting them into the inadequate plume of a separate gas generator to provide a combined plume, produces a plume having the size and radiating characteristics of the turbojet plume being simulated.

Abstract: A device suitable for preventing escape and subsequent circulation of toxic gases comprising an enclosure which is sealed by a surrounding air lock, automatic means for partially evacuating said enclosure and said air lock and for ventilating said enclosure and means for disconnecting said enclosure ventilating means, whereby a relatively undisturbed atmosphere is created in said enclosure.

Abstract: A solid fire-extinguishing composition comprisingA. carbamic powder containing a major proportion by weight of the compound KC.sub.2 N.sub.2 H.sub.3 O.sub.3 andB. a non-hygroscopic powder having greater bulk density and median particle size than the said carbamic powder.

Abstract: A piezoelectric ceramic transducer assembly for broadband noise-measuring drophone. A longitudinally polarized lead zirconate-titanate cylinder provided with end caps is sealed by O-rings within a circumferentially polarized lead zirconate-titanate cylinder providing high sensitivity, smooth response, omnidirectionality, and stability with temperature and hydrostatic pressure variations.

Abstract: A transportation machine such as a ballistic missile disposed for operation n a linear path is provided with a chassis including an aerate atmosphere and a gyroscopic rotor for development therearound of a pressurized aerate ring and for axial orientation in the linear path. A stabilizer develops signals responsive to differences in pressures between the aerate atmosphere and the pressurized ring for rotation of the chassis to axial coincidence with the rotor responsive to the signals.

Abstract: The invention is an automatically controlled magnetic marine mine sweeping ystem that does not constitute a safety hazard to the ship deploying it. It includes a ship that trails a pair of electrodes within the water which are, in turn, electrically energized by a variable current generator to induce a magnetic field therein. The intensity of said magnetic field is sensed by a magnetometer; and by means of a closed-loop, negative-feedback circuit incorporating said magnetometer, said current generator, and said sea water, the intensity of said magnetic field is limited to the extent that it does not extend under the ship and detonate marine mines that are close enough to be destructive thereto.

Abstract: This invention relates to a control and shim rod arrangement for a nuclear reactor. A second shield of concrete completely encloses a biological shield. Moveable plugs are mounted in said shield.