Abstract: The cable includes bundles of plastic-impregnated nylon fibers acting both s strain members and strain accumulators. An inner core bundle is wound with an electrical conductor that stretches with the fibers when the cable is tensioned. The winding pitch assures that the fractional change in volume per fractional change in length is the same for the winding as it is for the fibers. An outer sheath-like bundle surrounds the inner bundle and its winding. Preferably, the cable is used as a limited length section of an otherwise conventional co-axial cable for suspending various objects from a ship. The section length is limited to that needed for its accumulator action.

Abstract: A pair of structural members are coupled by a tongue and groove joint hav a groove half and a tongue half. To secure the joint, bolts extend transversely through aligned bolt holes and, on each side of the tongue half holes, are so-called `collapsing` slots. A linear explosive is placed in the base of the groove near the inner end of the tongue. The metal thickness of the tongue lying between the explosive and its holes and slots forms a `web` which, upon detonation, collapses into the slots. The collapse stretches the web portion adjacent the bolt holes sufficiently to produce a rupture or opening through which the bolts pass to permit separation of the structural members. The separation also is responsive to the explosive force so that the members are accelerated apart in opposite directions.

Abstract: The gage includes a cam follower formed of a plurality of radially expande segments each provided with a pair of inclined surfaces riding on a pair of cams carried by an elongate shaft reciprocably mounted in a suitable housing. When reciprocated in one direction one of the cams radially expands the segments. Upon reverse reciprocation, the other cam contracts them. Threads formed on the segments are formed ot mesh with the threads to be measured. A primary function of the gage is to measure the concentric relationship between a cylindrical object and the cylindrical configuration of a threaded end portion of the object. For this purpose, the shaft is floatably supported and, as the threaded segments move into their meshed engagement, it floatably assumes the axis of the threads being measured. When fully meshed, non-contact transducers can measure any inclination of the shaft from an original disposition.

Abstract: The reliability of electronic navigational equipment, such as missile guice sets, frequently requires a precisely-aligned support or mounting which must be rigidly maintained during the missile operation or flight. To maintain the alignment, the housing for the electronics is rigidly supported by a link mechanism pivotally coupled at one end to the missile airframe and, at the other, to the electronic housing through a crosshead assembly which includes a crosshead block slidably mounted in dove-tailed tracks of a crosshead guide carried by the housing. A spring-urged plunger of the crosshead assembly has its ends engaged in steep-walled detents to normally, during flight, lock the block in a fixed position. Extreme, non-operational, acceleration forces such as otherwise would damage the electronics, overcome the spring force on the plunger permitting a slidable breakaway displacement. Resilient shock absorbers then protectively cushion the force.

Abstract: Ocean thermal energy conversion (OTEC) uses a fluid, such as ammonia, hea by high-temperature surface water to provide a turbine-driving working gas. To condense the gas for re-use, a slurry of phase-transformation particles and cold ambient sea water is mixed in a deeply-submerged tank and delivered to a surface tank essentially at the cold sub-surface temperature. Condensing of the working gas is performed at the ocean surface level by exposure to the cold slurry temperature. Particle phase-transformation, which occurs at a temperature between that of the cold sub-surface water and the reject temperature of the heat-exchanger, maintains a surface tank temperature at about that of the sub-surface water.

Abstract: Memory apparatus for use in a data processing system and which includes in ts entirety a number of multi-access modules each formed of a plurality of data bit cells. Each module is accessed through multiple independent channels and each channel is capable of servicing a different request during the same memory cycle. Structurally, each independent channel is coupled by a drive line to a data bit storage cell and each drive line is energizable to close a switch mechanism for connecting a read-write bit line circuit to the cell. Individual cells have their own independent bit line circuits and switch mechanisms. Thus, plural requests for a read-out of a single cell can be serviced simultaneously. Special circuitry is suggested for resolving conflicts arising in situations involving simultaneous read-write or write requests addressed to a single cell.

Abstract: A first thin-film resistor member, preferably TaN, is disposed over a sec thin film member, such as NiCr, to completely cover the second member and act as a passivating layer preventing anodization of the second. The thin-film materials used for the first and second members have substantially an equal thin-film, sheet-resistance, resistance value per square (.OMEGA..quadrature.), with the first material being trimmable for this purpose. Also, the TCR (temperature coefficient of expansion) of the first material is negative while that of the second is positive. These members are coupled in parallel with substantially equal lengths but with differing widths which permit the first to completely cover the second. The arrangement permits the TCR of the parallel circuit to be brought substantially to a zero value and, in any event, a value no greater than .+-. 50 ppm/.degree. C.

Abstract: A flexible wire is secured at one end to the umbilical plug and at the ot to a sheave of a rotary actuator. The actuator is driven by launch-gas pressure to reel in the wire and retract the plug. A plug stop is mounted on the launch tube in the path of travel of the plug. Lift-off of the missile carries the plug into the stop to disengage and free it for retraction. The flexible wire coupling is provided with a slack portion to accommodate shock excursions and assure disengagement of the plug prior to retraction.

Abstract: A pack of ordinary, commercially-available batteries is provided with a con electrolyte-filled reservoir coupled to each battery by a small tube. The reservoir includes a compliant diaphragm which, when exposed to deep-sea pressure, applies the pressure to the reservoir electrolyte to force it into the battery. Forceful filling of the cells equalizes their internal and external pressures. Electrical discharge currents are reduced to a minimum by making the tubes as small as and as long as possible.

Abstract: Polymeric sulfur nitride is a conductive metallic compound providing a highly electronegative contact for both n- and p- type semiconductor materials. Tests show the electronegativity to be higher than Au. Larger barriers are obtained for n-type semiconductors and smaller barriers, or Ohmics, for p-types.

Abstract: The system employs a sliding tone FM signal to command a remote device such s a balloon; for example, to fire a squib for balloon release. The tone is a slowly-changing, progressively-increasing signal received and detected by discriminator circuitry for application to a phase-locked loop circuit. Comparison of the loop output with a reference voltage provides a release signal when the reference voltage is exceeded. Since the reference voltage is determined by the loop voltage produced by a predetermined command tone, the generation of the release signal is dependent upon the presence of that particular command frequency. A unijunction transistor and an SCR then function as a relay to close a battery-squib circuit. The slowly-changing, sliding tone, as well as the time constant of the phase locked loop circuit, provide a high degree of security from accidental commands and also permit a wide variation in component tolerance including temperature tolerance.

Abstract: 1.

Abstract: 9. A clipped speech channel coded communication receiver comprising: input eans for receiving radiated energy containing trains of pulses therein; channel decoder means operatively connected to said input means and comprising means for receiving said trains of pulses and retaining said trains of pulses; a multiplicity of channel coincidence circuit means operatively connected to the output of said channel decoder means for selecting a coded train of pulses corresponding to a particular channel input and producing an output pulse when the coded train of pulses is coincident therein; intelligence restoring means each restoring means being operatively connected to each of said coincidence circuit means and comprising means for converting output pulses from said coincidence circuit means to a clipped waveform; and output means operatively connected to said converting means for reproducing intelligence corresponding to an original composite waveform.

Abstract: The two-stroke engine has a piston mounted in a cylinder having a full diameter bore throughout its major length and a reduced diameter upper bore portion. The piston has the same configuration and in its upward compression stroke, air and finely-divided water droplets are admitted into an annular space formed between the piston's reduced diameter and the cylinder's full diameter. Flow of the air water mixture through an exhaust valve cools the motor. At TDC (top dead center) the upper surfaces of the piston and the cylinder mutually form a relatively small spheroidal combustion chamber. Differing compression ratios in the annular and the spheroidal chamber cause the air-water mixture to rush into the spheroid in a swirling motion to intimately mix with injected fuel. Ignition produces a complete burning. End gases or the like are burnt in the cooler annular space to avoid detonation. The fuel injection is in measured increments determined by the temperature and pressure of the water mixture.

Abstract: 1.

Abstract: A heterogeneous metallocarborane catalyst bound to a polymeric support by a carbon-boron bond. Chloromethylated polystyrene beads provide the support. The catalytic beads are characterized as3,3-(Ph P)-3-H-4 polystyrylmethyl - 3,1,2-Rh C.sub.2 B.sub.9 H.sub.10.

Abstract: The fabricated pressure vessel is a filament wound structure having a connt winding angle assuring maximum filament utilization efficiency and also having polar end openings of different sizes. Fabrication of the vessel includes a first step of forming a structure having filament windings and identically-sized polar openings equal to or less than the smaller of the openings dictated by the design. Identical openings permit the constant winding angle. In the winding operation, wafer-like mats formed of dimensionally-stable material are interspersed between the filament layers at each polar end. In the final step, the polar openings then are machined to the desired size. The interspersed mats encircle the polar openings and reinforce the polar regions.

Abstract: A typical rocket motor includes a motor casing containing a cast propellant onded to the casing and provided with a port through which combustion gases are delivered to the motor nozzle. During storage and operation, mechanical stresses in the propellant may produce tears resulting in motor malfunctions. Tear strength can be increased by reactively forming on selected port surface areas a thin-film cross-linked polymeric gel coating formed essentially of a highly functional polyglycol adipate and a polyfunctional isocyanate. Cross-linking with the propellant can be achieved by controlling the hydroxyl to isocyanate ratios of the coating and the propellant. The coating is particularly useful on XLDB (cross-linked, composite-modified double base) and on CMDB (composite-modified double-base) propellants.

Abstract: Presently available transducer systems provide analog electrical outputs portional to the linear displacement of an active element from the surface being measured. However, use requires that all or part of the surface be conductive. The present cartridge permits use of these transducers on any surface, conductive or not. It includes a tubular casing receiving both an active element portion of the transducer and a plunger formed of a conductive material. The plunger is reciprocally mounted with a compression spring normally urging it outwardly so that its tip end can contact and follow the surface to be measured. A set screw arrangement limits the plunger reciprocation. The length of the received portion of the transducer is precisely adjustable so that its active element can be disposed a precise spaced distance from the plunger when it is spring-pressed to its limit. As the plunger tip rides the surface being sensed its inward motion is limited by contact with the transducer end wall.

Abstract: The adhesion of HMX crystals to the binder of a propellant material is sificantly improved by providing a polymeric polyurethane coating. The HMX crystals are tumbled in benzene to which is added a dilute solution of poly-aryl phenylisocyanate in methylene chloride, water and triethylamine. A secondary coating then may be applied by reacting residual isocyanates with ethanol.