Abstract: In a practice ammunition including a self-destruct, fin-stabilized subprotile containing an elongated body composed of a plurality of mating segments having means for releasably holding said segments together, the means includes a heat sensitive nose cap including a pyrotechnic composition, which contains a fuel and an oxidizing agent. The nose cap holds the forward portions of the segments together, and due to the pyrotechnic composition, is adapted to burn and disintegrate essentially instantaneously in flight at a predetermined aerodynamic temperature to release the segments, whereby the distance at which the subprojectile self-destructs in its trajectory can be realized more accurately and reliably.

Abstract: The disclosure is a dual controlled linear resonance cryogenic cooler and comprised of a remote cold finger and a compressor, both driven by linear motors. A motor control means is used with the linear motors to drive both motors with a phase delay of the cold finger motor from that of the compressor motor such that the compressor linear motor alternately drives a piston to produce alternating pressure waves in a light cooling gas in working relation with a regenerator-displacer in the remote cold finger and the cold finger linear motor has a delayed phase relationship with the compressor linear motor. The use of linear motors which are slightly out of phase with each other selectively provides flat top and bottom dead center with constant linear increases and decreases therebetween for the compressor piston to follow and to eliminate the normal side forces of the piston that cause excessive wear.

Abstract: A curvilinear solid propellant gas generator which includes a housing that as a diameter or width that is larger than the length of the gas generator and with a curvilinear solid propellant grain mounted therein to provide a long burning time propellant with a short length housing.

Abstract: A smoke-producing composition which will produce a dense smoke in about 5 conds and continues to produce a visible cloud having a duration of about 10 minutes for military screening operations in the field. The composition has critical limits in proportions and particle size for effective and efficient use in the 81 mm mortar cartridge. The composition consists essentially of 75 to 90 parts red phosphorus of 10.+-.5.mu. in size, 10 to 20 parts sodium nitrate of 30.+-.15.mu., and 4 to 10 parts of an epoxy binder. All parts being by weight.

Abstract: A method and apparatus for receiving and detecting pulsed RF signals within first frequency band. Incoming pulsed RF signals are supplied to a linear amplifier which amplifies any of the signals within a broader second frequency band. The pulsed RF output signals of the amplifier are supplied to an in-band signal detection circuit controlling switches in the outputs of a first video detector and a frequency discriminator which are also supplied with the amplifier output signals, so that output video and frequency signals are provided only for pulsed RF signals within the first frequency band.

Abstract: A composition comprising 1,4,6,9-tetranitrodiamantane, and process for its reparation are disclosed.

Abstract: Aluminum alloy armor weld joints are ballistic shock tested by first sepaely determining the ballistic impact capability of the components to be joined by the weldment by firing a plate proofing projectile at 0.degree. obliquity at each of said components at different striking velocities. The welded joint designs and welding procedures are then tested by firing the same projectile at the same angle at each of the components of the weldment so that the projectile impacts each component in the vicinity of the weld at a velocity comparable to the critical velocity of the component being impacted.

Abstract: An automatic velocity delay circuit utilizes the output signal of a radio equency velocimeter for determining the time a projectile takes to pass a sensor located at the muzzle end of a gun. The circuit uses this time interval pulse and clocking pulses to provide an X-ray trigger pulse at the precise instant that the projectile passes an X-ray head located at a selected position along a parallel path of projectile travel, thus insuring a photographic record of the projectile in the muzzle blast region.

Abstract: A mechanically offset fluid amplifier for converting the absolute pressure f a pressurized fluid to a differential pressure indicating the pressure of the pressurized fluid relative to a predetermined set point pressure. The device includes two outlets separated by a splitter, a supply nozzle for directing a jet of the pressurized fluid toward a first of the two outlets at a velocity determined by the absolute pressure, and control elements for deflecting the jet toward the second outlet such that as the jet velocity increases from zero, the deflection of the jet increases to a maximum value and then decreases until the differential pressure between the two outlets is equal to zero when the absolute pressure of the pressurized fluid is equal to the predetermined set point pressure.

Abstract: A fire detection system using optical fibers to transmit flame signals from a plurality of remote monitoring stations to a central detection and analysis station, the invention comprises a network of optical fibers which connect the monitoring stations to the central detection station for the purpose of transmitting incident analog optical, infrared and ultraviolet spectra to the central station for detection of fire conditions. The central detection and analysis station preferably includes a rotary scanner which scans each of the optical fibers, light from the fibers being dispersed by a prism associated with the scanner to allow detection of the various spectral components of the dispersed light by light sensitive semiconductors. The detected spectral components are then compared to known fire signal signatures which include flicker rate and spectral content information.

Abstract: Apparatus for catching a sample of solid high explosive detonation products hat get ahead of the shock front during the detonation process. The device is passive. The door of the rectangular box of the device is open to allow the passage of solid products ahead of the shockwave into the box. The door to the box is closed mechanically, by pressure applied to both sides of the bent (angled) door. The shockwave is the source of this pressure. A mechanical latch secures the door on closing. The device is made of steel plate and pipe of sufficient thickness to withstand explosive shock.

Abstract: Dual field-of-view detection allows reflected energy from a target to be eived in one detector and extraneous reflected energy adjacent to the target area to be simultaneously detected in a separate detector. Comparison of the desired signal with a threshold level and with the detected extraneous energy level allows superior false alarm rejection while improving sensitivity by allowing reduced threshold levels for the true target. This dual detection in a single receiver allows the receiver to have two separate but immediately adjacent fields-of-view which interact with a transmitted beam to form a pair of adjacent sensing zones. A vehicle such as a missile equipped with this detection system can pass in close proximity to a target and distinguish a true target passing through the established sensing zone from extraneous background signals.

Abstract: A mechanism for protecting the tires of military vehicles from destruction y enemy small arms fire. The mechanism includes a plate or disk of armor material radiating from the vehicle wheel to a point slightly less than the expected radial deformation of the tire so that the disk is prevented from impacting against the terrain during severe jounce motions of the tire. As an auxiliary feature, a series of paddles can be retractably mounted on each disk for extension from the disk preferably when it is desired to operate the vehicle in mud, sand, or other soft terrains. The paddles tractively engaged the terrain to prevent wheel spin.

Abstract: A tone signalling adapter for providing standard dual tone dialing capabiy to a ring-down type military field telephone set and comprising a 16 button key set mounted on a generally rectangular body secured to a saddle member which clips onto the top portion of the telephone set so that it fits beneath the cradled handset of the telephone, thus enabling the entire assembly to be carried within the confines of an existing carrying case without obstruction. The pushbutton key set, moreover, connects into the field telephone via a preexisting headset-microphone connector on the base of the telephone. The adapter also includes a releasably hinged cover on the side of the saddle member so that it may selectively face forward or backward, for inhibiting use, at certain times, of a hand-crank located on the side of the telephone set.

Abstract: A novel method has been developed for improved chemotherapy of animals infected with African trypanosomiasis. The method involves the concurrent administration of therapeutically effective amounts of cis-diamminedichloroplatinum (II) and bis-(diethylthiocarbamoyl)disulfide (disulfiram) or diethyl dithiocarbamate to the hydrated animal.

Abstract: A chirp transform correlator having asynchronous operation is made possible by the use of a pair of paralleled signal processing channels to which the unknown signal to be correlated is applied. The two channels include sweeping local oscillators which are interlaced in timing so that any arbitrarily timed unknown input signal will be fully transformed by one or the other of the channels.

Abstract: An adjustable shim structure for use between shaft-mounted equipments and aft-support bearings, whereby axial play of the equipments is prevented. The shim structure includes two collars having meshed threads enabling the collars to be rotated relative to one another for adjusting the axial length of the collar assembly. The shaft may be connected to each bearing by means of an expansible plug extending within a circular cavity in the shaft; the plug exerts an outward radial force on the shaft wall, thus expanding the shaft into an interference fit with the associated bearing.

Abstract: This disclosure concerns a communications network information system, and ovides apparatus and a method for efficiently providing survivable communications capability to every surviving node in the communications network from every other surviving node. The types of information provided can include high priority message between users of the communications system, or perhaps of even greater importance, very frequently updated status information about the communications network nodes and their interconnecting links for use in optimally utilizing the surviving resources of a heavily damaged network. With this capability every surviving node in the network will be automatically and efficiently provided with the status of every node and interconnecting link.

Abstract: Amine salts which are adducts of an ammonium ion donor selected from ammom perchlorate, ammonium sulfate, ammonium formate, and equal molar mixture of ammonium perchlorate and ammonium formate and cyanoethyl substituted tetraethylene pentamine (TEPAN) or the glycidol reaction product of cyanoethyl substituted tetraethylene pentamine (TEPANOL) are employed as a bonding agent in a solid propellant composition employing a polyester binder of polydiethyleneglycoladipate.Unlike hydroxy-terminated polybutadiene wherein a bonding agent is solubilized and still can function as a bonding agent for inorganic ammonium oxidizer salts in the propellant matrix, polyester binders that solubilize the bonding agent renders the bonding agent ineffectual as a bonding agent. Therefore, with a polyester binder it was found that the bonding agent could not be soluble in the prebinder to be effective in improving mechanical properties.

Abstract: An improved storable tie-down device. The tie-down device has a center bar ith a pair of spared, parallel V-shaped arms extending from the center bar. A mounting arm extends outward from the V-shaped legs. A housing located below the surface of a frame holds the mounting arms so that the tie-down device can be rotated from a retracted storage position to an active attachment position.