Abstract: 4. A towable sea-going vehicle for carrying communications equipment for in conjunctive cooperation with communications equipment of another vessel comprising:an essentially hollow body having openings in its walls for free flooding and self-bailing of said body;said body having an essentially rounded, gently pointed nose section and a V-bottom portion, said V-bottom portion providing a surface for the planing of said body on the surface of water and providing a face portion for contributing to the hydrodynamic lifting of said body when in an underwater position;buoyancy producing means located in said body to the extent that the weight of said body in air is substantially less than the excess buoyancy of said body when immersed in water;and said body having an upper cambered portion for producing lift when said body is in an underwater position;whereby said communications-carrying vehicle may be towed either submerged or on the water surface at speeds up to and in excess of 35 knots.

Abstract: This anti-sway device uses roller chains to greatly restrict the lateral movement of the lifting lines suspended from hoists or cranes. The roller chain is suspended parallel to the lifting lines or lifting chains. One end is attached to the free end of the lifting lines. The other end of the roller chain is wound around a takeup reel which prevents the roller chain from going slack. Since roller chains tend to be very stiff in a direction parallel to the pivotal axes of the roller links, the roller chain will tend to prevent the lifting lines from moving in the plane of the pivotal axes of the roller links.

Abstract: 1. A shock crush sub-foundation comprising a base, a frame member reinforcing said base, an equipment support member, and deformation absorbing means between said frame member and said equipment support member for absorbing plastic deformation of said base and said base frame member to prevent deformation of said support member, said deformation absorbing means comprising a hollow member containing viscous fluid and having an orifice normally sealed by a diaphragm which is designed to rupture upon plastic deformation of said base member and said frame member.

Abstract: A temperature probe for use by submersibles when under ice, whereby impinent of the Bathythermograph against the under surface of the ice causes the probe to be released and fall to the bottom. The probe may also be released by the bathythermograph reaching the surface.

Abstract: In a pump having scroll vane impellers, rapid-opening additional discharge orts are formed by slats in the scroll vanes overlapping slats in the opposing end plates, thereby allowing fluids to be pumped without over-pressurization.

Abstract: 1.

Abstract: The invention is a new linkage for connecting the piston and the piston actuator in a high pressure pump. All of the compression forces transmitted from the piston actuator to the piston by this linkage will be axial forces parallel to the axis of the piston since the linkage will not transmit forces to the piston which are transverse to its axis. This linkage allows the use of hard brittle materials such as ceramic materials in the piston because any misalignment between the axises of the piston actuator and the piston will not result in bending forces being applied to the piston which would cause it to break.

Abstract: A method and apparatus for reproducing in minute detail a surface underwater. The apparatus consists of a layer of wax supported in a frame for movement into and out of contact with the surface to be reproduced, there being provided means for heating wax material to soften it and means for withdrawing the water from between the wax and surface to be molded to provide a substantially water free surface for molding.

Abstract: This system monitors the operation of ball bearings in rotating machinery by continuously measuring the radial deflections of the outer race of these bearings using a fiber optic proximity probe. A second sensor is used to measure the rate of rotation of the machine's shaft. One of the frequency components in the signal produced by the proximity probe will be equal to the rate at which the balls in the bearing pass by the probe. The ratio of this ball pass frequency to the rotation frequency from the second probe is computed. The ratio of the peak value to the RMS value of the higher frequency noise components from the proximity probe signal is also computed. These two ratios are used to predict oncoming bearing failures and to determine if bearings have been properly installed. The component of the proximity probe output which is at the frequency of rotation of the rotor may be filtered and its phase angle may be measured to determine the angular placement of any unbalanced weight on the rotor.

Abstract: A sidewall drag reduction system for captured air bubble type surface eff ships having rigid surface-piercing sidewalls. Pressurized air is discharged vertically down into the surface effect ship air cushion chamber from platform ports, and horizontally into the air cushion chamber from nozzles located near the bottom of the internal surface of the sidewalls.

Abstract: An automatic dual-mode shipboard wastewater treatment system employing ozone for disinfection of the primary effluent. Solids are removed and pumped, for example, to the ship's boiler or other equipment for incineration, while the liquid waste is pumped through a series of ozone reactors and then to a holding tank from which it is discharged overboard, after accumulating to a predetermined level. The system operates continuously by recirculating the effluent, during low flow periods, between a second holding tank and the ozone reactors.

Abstract: A cable fairing to reduce the "strumming" of a tow cable comprising a pluity of tabs or stubs, having a height radially of the cable, less than the cable diameter, extruded onto the armor sheath of the cable. The stubs are integrally formed in a thermal-setting plastic sheath in a spiral pattern of small angle along the length of the cable. The spiral pattern is reversed at periodic intervals, or two sets of tabs are provided and arranged in opposite-hand spiral patterns criss-crossing within the same cable length.

Abstract: 1. A method of decreasing the deleterious effects of cavitation on a ship propeller comprising providing a propeller having supercavitating blade sections, rotating said propeller to drive said ship, and ejecting air from the suction side of each said blade when said ship speed and propeller speed reach a predetermined point to thereby produce a cavity which extends from the leading edge to a point in the water beyond the trailing edge of said blade and envelops the entire suction side of said blade.

Abstract: 1. A method for determining the sound generated by a submarine propeller by esting a model submarine in a wind tunnel comprising the steps of:placing said model submarine containing a propeller in an air stream;rotating the propeller of said submarine model,measuring the sound generated by the model submarine.

Abstract: 6. A torpedo detecting and explosive charge carrying mechanism comprising an electrically conductive cable, a shielding means adapted for slide on said cable for minimizing the effect of electrically induced eddy currents, and means for transferring power from said cable mounted within said shielding means.

Abstract: 13. A minesweeping system comprising a pair of floats, means for towing the loats of said pair in laterally spaced relationship, a hydrofoil shaped pressure plate, and suspension means for suspending said pressure plate from said pair of floats, said suspension means including shock absorber means for eliminating shock caused by wave action on said floats.

Abstract: 1. A towed decoy system adapted to be towed from a towing vessel, an electrically powered noisemaker, an electrical tow cable attached to said noisemaker, a depressor vane, a depresser cable connected to said depressor vane and to the towing vessel, and means interconnecting said depressor cable and said electrical tow cable at a point near said depressor vane, said interconnecting means comprising a pair of cable grips respectively attached at one end to adjacent sections of said electrical tow cable and at their other ends to a snatch block movably mounted on said depressor cable thereby providing slack in said electrical tow cable, whereby said noisemaker is towed at a depth not less than that of the point of attachment of said snatch block to said depressor cable.

Abstract: 4. An underwater noise generator comprising a thick-walled hollow cylindrl housing, said housing having continuous inner and outer cylindrical surfaces and at least one hollow portion between said inner and outer surfaces; a spindle rotatably mounted within said housing along the longitudinal axis thereof, means for rotating said spindle, and a roller mounted on said spindle and driven thereby in rolling contact with said inner surface of said housing, said roller having a plurality of grooves cut in the exterior surface thereof, whereby sound is produced as said rollers roll on said cylindrical housing.

Abstract: A positive displacement pumping action is obtained from two meshed scroll ne impellers by mounting the two impellers on parallel but offset drive shafts and rotating them synchronously in the same direction.

Abstract: In fluid jet transfer valves comprising two opposing jet tube openings with high pressure fluid flowing out of one opening towards the other, the end surfaces of the jet tubes are provided with a novel shape which allows the tube ends to seal tightly together when they are coaxially aligned with each other and also to be deflected apart without binding. The shape of the end surface on one of the tubes is an inverted reproduction of the surface on the opposing tube so that when the tubes are coaxially aligned with each other and pressed together a tight seal will be formed. The end surfaces on the tubes are shaped so that the tubes may be freely moved laterally relative to each other without binding. The tilt of the end surfaces of the two tubes is minimized so that small lateral closure forces will generate much larger axial seating forces and so that the lateral opening forces created by escaping high pressure fluid are minimized.