Abstract: A gimballed mirror assembly having an inner gimbal unit which carries a reflective mirror, an outer gimbal unit and a housing. The inner gimbal unit rotates within the outer gimbal unit, about a vertical axis. The top and bottom of the inner gimbal unit include conical depressions in which are located ball bearings to allow azimuth rotation. The outer gimbal unit rotates within the housing, about a horizontal axis. The sides of the outer gimbal unit include conical depressions in which are located ball bearings to allow elevation rotation. A first adjusting screw assembly contacts conical depressions in the back of the inner gimbal unit on opposite sides of the vertical axis to maintain the inner gimbal unit in a predetermined fixed orientation. A second adjusting screw assembly contacts conical depressions in the back of the outer gimbal unit on opposite sides of the horizontal axis to maintain the outer gimbal unit in a predetermined fixed orientation.

Abstract: Sonobuoy apparatus which fits into an A sized canister for use in the water environment. The apparatus includes an array of telescopic arms connected by hinges to a housing which contains receiver transducer electronics. An acoustic projector bears against projections on the last arm section of each arm such that it will cause the nested arm sections to extend while dropping through the water. When the canister falls free, an arm deployment arrangement causes the arms to assume a horizontal orientation. These deployed arms carry receive transducers for detecting acoustic echos from a potential target.

Abstract: This invention is for the protection and surface treatment of aluminum, aluminum alloys and coated aluminum substrates against corrosion. The aluminum substrates are treated with an acidic aqueous solution containing small but effective amounts of at least one trivalent chromium salt such as a trivalent chromium sulfate, at least one alkali metal hexafluorazirconate such as potassium hexafluorozirconate in combination with small but effective amounts of at least one water soluble or dispersible thickening agent such as a cellulose compound and at least one water soluble surfactant. The corrosion resistant aluminum substrates of this invention have improved adhesion for overlaying coatings e.g. paints and a lower electrical resistance contact.

Abstract: A refueling drogue for rearward deployment from a tanker aircraft into an air stream includes a fuel valve for receiving fuel from the tanker aircraft and controlling a flow of the fuel; a coupling attached to the fuel valve for receiving fuel from the fuel valve; and a plurality of struts, each strut having a proximal end and a distal end wherein each strut is rotatably connected to the coupling at the proximal end and each strut includes a winglet at the distal end.

Abstract: This invention relates to an on-line statistical process control device for solder paste and residues. The invention consists of electronics hardware, software, and probing systems. The electrical hardware of the invention provides voltage and current measurements of solder paste materials, the software of the invention controls the hardware, provides real-time complex, non-linear least squares curve fitting for equivalent circuit analysis, data storage and retrieval of circuit parameters and behavior, and statistical process control tracking and charting. The probing systems of the invention allows for 2, 3, and 4 probe surface and bulk measurements of the solder paste and residues.

Abstract: The marine Vessel Traffic System (VTS) is an improved radar harbor surveillance sensor, computer and display system that monitors marine harbor traffic, provides advisories to vessels in areas selected by the system operators, and provide the operators of the system with an early warning of unacceptable traffic conflicts in the confined waterways of the harbor. The VTS collects harbor traffic information from multiple remote sensor collection sites around the harbor and integrates, records, merges and presents the remote site data onto a single operator display, selected from a plurality of operator displays. VTS provides quick accurate computer generated graphic display of the harbor traffic, possible surface and subsurface conflicts, and key vessel identification information and the VTS documents incidents and traffic conditions for the Coast Guard or other waterway authorities.

Abstract: A modular air-conditioning system is disclosed and consists of a power supply module, blower module(s), air-conditioning module(s), and an air-distribution module. The power module may be comprised of batteries, whereas the blower module provides ventilation through the air-conditioning system that extracts heat from the flow of fluid and directs the extracted heat to a heat exchanger. The heat exchanger is a closed-low pressure system consisting of a liquid filled with a water adsorbing material. The heat is extracted from boiling liquid in a lower chamber of the heat exchanger and transferred to an upper chamber of the heat exchanger by way of heat and mass transfer.

Abstract: An apparatus for creating a fine liquid mist includes a container capable of holding fluid; one of a perforated basket and a porous bag disposed in the container; a liquid supply connector connected to the container; a mixing chamber connected to the container; and at least one convergent/divergent nozzle connected to the mixing chamber. A method of forming an effervescent fine liquid mist includes mixing liquid and chemical reactant to form non-toxic, noncombustible gas bubbles; mixing the liquid and the gas bubbles to form a two-phase fluid flow; and directing the two-phase fluid flow through at least one convergent/divergent nozzle.

Abstract: A landing guidance system is disclosed for use with helicopters or other aircraft during the terminal phase of approach to a marine structure, such as a moving ship at sea. Signals from shipboard pitch and roll position sensors are routed to a signal processor that computes stabilization corrections which, in turn, are applied to a multi-axis electromechanical system that moves internal elements of an optical system to compensate for motion of a shipboard platform resulting in a stabilized optical presentation in inertial space to the pilot of an approaching aircraft. A dual display is provided through the use of a spectral beam splitter that allows both an infrared and visible display to be presented to an approaching pilot. This allows the pilot to use the display with and without night vision devices. The visible energy display to the pilot is color-coded with three distinct colors.

Abstract: A vest particularly suited for survival purposes is disclosed. The vest has removably attachable pockets as well as a removably attachable hoisting harness so as to facilitate the needs for survival and, in addition, has provisions for easily adjusting the size thereof.

Abstract: Acoustic intensity is measured by a submerged probe consisting of two passive geophones mounted in spaced relationship with their sensing axes aligned. The geophones are connected through a cable to a remote spectrum analyzer in which acoustic intensity is computed from the velocity gradient between the two geophones. The exclusive use of geophones, which inherently have low impedance outputs, eliminates the need for preamplification in the probe. The geophones are mounted inside an acoustically transparent, thin rubber shell, which reduces the effects of noise due to flow.

Abstract: A system, and a method of operation thereof, for analyzing the performance f a tape recorder having a playback head is disclosed. The system allows for the recorded data of the tape recorder to be routed to a analog-to-digital converter whose output is delivered to a digital signal processor preferably having a routine to convert the digital data to an FFT data stream which, in turn, is routed to a microprocessor. The computer analyzes the FFT data and provides digital signals to external display devices that indicate the proper recording of the tape recorder, the need for the recorder's heads to be cleaned, the occurrence of excessive dropout data recording rate, or the need to manually or automatically adjust the bias and equalization levels of the tape recorder.

Abstract: An active regulator that reduces the noise occurring on an image intensif tube particularly suited for use in night vision system is disclosed. The active regulator reduces the noise thereof and increases the sensitivity of the night vision system.

Abstract: An air-launched sonobuoy, particularly useful for under-ice surveillance, rries a descent-retardation parachute whose lanyards activate a surface float during descent. Upon impact into an ice region, a slip-rod is jarred loose from the cannister top thus freeing the surface float, and its RF antenna, to remain above the ice while the remainder of the components deploy.

Abstract: A system for verifying the operational performance of command tone generas, transmitters, and antennas including its signal quality and strength as well as its reflected power is disclosed. The system includes a receiver that receives a RF signal and develops an output AM demodulated signal having a d.c. component that is proportional to the amplitude of the received RF signal. The d.c. component serves as an AGC input for the receiver so as to hold the AM demodulated signal constant within a specified range for the input RF signal. The AGC value is digitized to form tuned RF power in sync with the address detection with a microprocessor correcting for AGC nonlinearities.

Abstract: A system for conserving power and reducing heat generation, and a method of operation thereof, that turns off an analog-to-digital converter during e period of time of non-data acquisition is disclosed.

Abstract: A cooling and heating device that may be used in conjunction with a perso air conditioned apparatus is disclosed. The cooling and heating device not only cools the user of the personal conditioned air apparatus, but provides for heating a user by harnessing the by-product of the cooling process, as well as provides ballistic protection for the person using the personal conditioned air apparatus.

Abstract: An optical fiber coupled to a high power laser carries laser energy to la-activated sound generating materials disposed at intervals along its length. The sound-generating materials are acoustically coupled to an object or objects to be monitored. Acoustic reflections from the objects modulate the periods of Bragg gratings formed in a separate core of the fiber, or in the core of a separate fiber. The modulation of a Bragg grating period is detected as a Doppler shift in an interrogation beam reflected by the grating.

Abstract: The present invention is directed to a coating process for forming a high ality, high ductility, metallurgically bonded coating on a substrate or part. The process comprises applying a coating to the substrate using an HVOF spray coating technique and subjecting the coated substrate to a stepped heat treatment for diffusing the coating into the substrate while substantially avoiding the formation of macro cracks.

Abstract: An adapter is disclosed for operatively mating an optical laser interfere filter with an objective lens of night vision goggles, without causing an incompatibility between the night vision goggles and the Gideon NVG Head Up Display.