Abstract: A current collector for use in a battery wherein the current collector is coaxial with the battery axis and is fabricated with a plurality of pairs of layers of electrically conducting material with alternate layers having different conductivities. An anisotropic resistivity structure is thus formed having a greater resistance in the axial direction than in a radial direction relative to the axis so as to provide for a more uniform current distribution.

Abstract: An array of receiver elements in a radar or sonar system is synthetically elongated resulting in a narrower beam pattern. This is accomplished by sampling each output signal of the receiver elements, converting the signal to I and Q components for determination of a magnitude and phase angle. The phase angle is modified by a certain phase modulation factor f.sub.m and new I and Q components are calculated using the modified phase angle. The modified I and Q components from all of the received elements are combined for display purposes.

Abstract: A connector having a metal shell which would normally be subject to galvanic action in an underwater environment. The metal shell includes a protective plastic coating of polyphenylene sulfide resin electrodeposited thereon and over a portion of which plastic coating an encapsulating boot is bonded. The arrangement insures that no delamination of the encapsulant will occur due to galvanic reactions.

Abstract: In a steam turbine-generator system wherein the turbine shaft is subject to an electrostatic charge buildup, an active grounding system continuously maintains the shaft at substantially ground potential. A feedback circuit is connected between two brushes contacting the rotating shaft and is operable to generate a current of a magnitude to prevent electrostatic discharge as a function of the voltage as sensed by one of the brushes. A current sensor monitors the current supplied by the feedback circuit to the shaft and the output of the current sensor is utilized to diagnose various operating conditions of the steam turbine-generator system.

Abstract: A separable joint for a two-part oceonographic sensor package wherein the two parts are cylindrically shaped and joined by a cylinder of chemically tempered glass. A pyrotechnic device inside the unit will, upon command, activate to shatter the glass thereby effecting separation. A second and similar pyrotechnic device is provided for redundancy.

Abstract: Drilling apparatus for trepanning a difficult to work material. A drill member includes a very thin wall cylindrical cutting head integral with a shank portion, with the assembly being machined from the same piece of stock to insure concentricity. A fluid supply collar includes lower and upper Teflon washer inserts which surround the shank portions and which are held in place respectively by a shoulder of the cutting head and a chuck or other holder of a machine which rotates the drill member. Fluid supplied to the collar is directed through radial and axial passageways in the drill member to the lower margin thereof, and which lower margin includes a continuous abrading surface on the inside, outside and edge thereof. The length of shank extending from the holder is extremely short due to the dimension of the collar thereby resulting in high stiffness to insure for concentricity during drilling operations.

Abstract: A high pressure steam turbine having a sealing gland where the turbine rotor penetrates the casing of the turbine. Under certain conditions the gland is sealed by an auxiliary steam supply, and under other conditions the gland is self sealed by turbine inlet steam. A control system is provided to modify the temperature of the auxiliary steam to be more compatible with the self sealing steam, so as to eliminate thermal shock to the turbine rotor.

Abstract: A method of making a transducer which has a head mass, a tail mass and a plurality of piezoelectric rings arranged in a stack with alternate electrodes, which are to be glued to the piezoelectric rings. The electrodes are of the type which have a surface on either side defining passageways when abutting an adjacent component. The components are assembled without the use of adhesive and then placed into a vacuum chamber where the pressure is reduced. The pressure is then brought back to normal atmospheric pressure in the presence of an adhesive surrounding the stack, with the adhesive being drawn into the passageways and toward the interior of the stack as a result of the pressure differential created. The adhesive joins the components together and also coats the outside of the stack so that after curing it functions as an anti-arcing coating.

Abstract: A hand controller having a control handle member supported by a hexagonal array of three pairs of oppositely-angled force sensors provides for creation of control signals according to degree of input manual effort in any and all linear and rotary directions: left; right; up; down; fore; aft; forward; rearward; leftward and rightward; tilt moments; and clockwise and counterclockwise yaw moments.

Abstract: A dipole hydrophone which includes a radiation target for acoustic energy and a counterbalancing mass. A first multilaminar magnetostrictive arm is connected to the radiation target at its center gravity and a second multilaminar magnetostrictive arm is similarly connected to the center of gravity of the counterbalancing mass. The lower portion of each arm is slotted to define two legs, and a permanent magnet, in conjunction with the slotted structure forms a closed magnetic path for flux. Windings for sensing a change in flux are slipped over the leg portions, yielding a high gain device. The two arms are connected by a coupling member which is compliantly suspended from a support structure.

Abstract: A dipole hydrophone transducer which includes first and second magnetostrictive arms and associated windings. One arm includes a radiation target for acoustic energy for production of proportional signals in the windings and the other arm includes a counterbalancing mass for acceleration cancelling. In one embodiment the radiation target is in the form of a disk and the counterbalancing mass is in the form of a ring surrounding the disk so that the disk and ring have the same center of gravity.