Abstract: A terrestrial acoustic sensor array for detecting and preventing airspace collision with an unmanned aerial vehicle (UAV) includes a plurality of ground-based acoustic sensor installations, each of the acoustic sensor installations including a sub-array of microphones. The terrestrial acoustic sensor array may further include a processor for detecting an aircraft based on sensor data collected from the microphones of at least one of the plurality of acoustic sensor installations and a network link for transmitting a signal based on the detection of the aircraft to a control system of the UAV.

Abstract: A novel metallized film capacitor is contemplated. The capacitor includes a first film and a second film. Each of the first film and second film have a metallized layer added. Each of the metallized layers includes alternating metallized sections and margin sections. The outermost sections on one film are metallized sections, while the outermost sections on the other film are margin sections. This pattern and proper sizing of the sections creates overlap regions where a metallized section from one film overlaps a metallized section from the other film. These overlap regions create sub-capacitors that give the capacitor low inductance while allowing for high current and high voltage.

Abstract: A steerable, high-power microwave antenna includes: a forward-traveling, leaky-wave feed antenna; a trans-reflecting conical-sectional reflector disposed spaced-apart and above said leaky-wave feed antenna and having a conical surface facing said leaky-wave feed antenna and formed of a plurality of electrical conductors held in parallel order in a grill; and a twist-reflector pivotally mounted opposite and spaced-apart from said conical surface of said trans-reflecting conical-sectional reflector.

Abstract: A system and a method for suppressing the build up of metal carbonates in the electrolyte, using a porous cell separator is used to allow the use of different electrolyte compositions around the anode (anolyte) and the cathode (catholyte). This cell configuration enables the oxygen cathode to operate in a molten hydroxide electrolyte, and the carbon anode to operate in mixed carbonate-hydroxide melt, so that most of the advantages of using a molten hydroxide electrolyte will be retained.

Abstract: A wind-shielded acoustic sensor, having a microphone and a housing of the microphone. The housing has a streamlined, continuous profile about a latitudinal axis and a longitudinal axis thereof, such that wind-induced noise can be reduced. A plurality of uniformly spaced sound ports are formed along a plurality of circumferences centered about a longitudinal axis thereof. At least one region of the housing is sufficiently thin and pliable such that deformation will occur while subjected to wind. Thereby, both acoustic signals and wind-related random-like pressure fluctuations are transmitted into the cavity enclosed by the housing.

Abstract: A low profile broadband antenna capable of measuring shielding effectiveness (SE) of a shielded boundary above or below ground for permanent installation behind walls, under floors, above ceilings and other areas with limited transverse (as opposed to lateral) available space is provided. A spiral antenna having a wide operating bandwidth is positioned within the interior of an environmentally sealed enclosure. The enclosure likewise has a low profile suited for installation in such locations.

Abstract: An acoustic collision detection system that enables an aircraft to detect an approaching target, recognize the potential for collision and change course to maintain a safe separation distance, with or without operator invention. The acoustic collision detection system consists of an array of acoustic probes and a digital signal processor which receives acoustic data from the approaching target. The digital signal processor is configured to receive acoustic data from the array of acoustic probes; filter out noise and its own acoustic signals; extract the acoustic signals emanating from the approaching target; calculate the intensity, the bearing and the bearing angle rate of change of the approaching target, and determine whether the aircraft and the approaching target are on a potential collision course.

Abstract: A LMMHD power generation cell, having a fluid channel in which a conductive fluid is forced to flow in response to an external force. A pair of pressure conveying members such as bellow reservoirs can be used for conveying the external force to the conductive flow. A magnetic field is established across the fluid channel by a pair of magnets. A pair of electrodes is disposed with respect to the fluid channel to collect the electric current induced by the conductive fluid flowing through the magnetic field. The magnets are selected from either permanent magnets or electromagnets. Preferably, the conductive fluid is selected from low-density, low-viscosity, high-conductivity liquid metal such as NaK-78.

Abstract: A system for suppressing ambient signals from a signal containing radiated emissions of a electronic device and ambient signals. The system comprises a first receiver operative to receive the ambient signals and the radiated emissions from the electronic device. The first receiver is operative to demodulate and digitize the ambient signals and the radiated emissions. The system further comprises a second receiver operative to receive primarily the ambient signals wherein the second receiver is time and frequency synchronized to the first receiver and operative to demodulate and digitize the ambient signals. A central computer is in electrical communication with the first and second receivers and is operative to store and process the ambient signals and the radiated emissions from respective ones of the first and second receivers. Accordingly, the central computer is configured as an adaptive filter operative to suppress the ambient signals correlated between the first and second receivers.

Abstract: A process of producing a high energy chemical oxygen-iodine laser, including the steps of obtaining a quantity of oxygen in the singlet delta energy state [O2(a1&Dgr;)], combining the O2(a1&Dgr;) with a quantity of non-reactive carrier gas, combining the singlet delta oxygen and carrier gas with a non-reactive iodine donor gas and homogenizing the entire mixture, creating and maintaining an electrical discharge plasma downstream from a nozzle, passing the homogenized mixture through the nozzle and the discharge plasma at supersonic speeds to dissociate the iodine into free iodine atoms and directing the flow of gasses and free iodine atoms into the optical cavity laser action region of a laser.

Abstract: A compact, lightweight, steerable, high-power, microwave weapon including a self-powered, steerable vehicle having at least one exterior antenna support surface, a self-powered, microwave radiation source mounted in the vehicle and including a waveguide to connect the power source to the exterior surface, a feed horn, extending from the waveguide means, including a window transparent to microwave energy for receiving and radiating a pulsed, high-energy microwave radiation beam, a transreflector fixedly mounted on the exterior surface arranged spaced-apart and above the feed horn and having a concave surface facing the feed horn window and formed of a plurality of electrical conductors held in parallel order in a frame, and a twistreflector pivotally mounted opposite and spaced-apart from the concave surface of the transreflector and adapted to receive microwave energy reflected to it from the concave surface of the transreflector and to rotate the polarization by 90° and reflect the microwave energy back

Abstract: A carbon-air fuel cell defined by an enclosed heat insulating container, a cathode supported in the container and arranged to form an air space about the inside thereof, an anode basket positioned inside the cathode, spaced-apart from the container, and containing therein a charge of carbon, a charge of molten electrolyte, in the form of a hydroxide that is selected from the group consisting of Aluminum, Calcium, Cesium, Potassium, Sodium, Rubidium, Strontium and mixtures thereof, filling the space between the cathode and the charge carbon; and, a bubbler for passing an oxygen-containing stream of gas through the cathode into the molten electrolyte where the oxygen ionizes and diffuses through to the anode basket into contact with the carbon to produce an electrical charge at the anode basket.

Abstract: A method of enhancing the remediation of contaminated soils and ground water, production of oil and gas, and production of any solid, gas, and/or liquid from subsurface geologic and man-made formations including the steps of estimating the geometric boundaries of the region containing the material to be recovered, drilling a recovery well(s) into subsurface in a strategic location to recover the material of interest, establishing multiple sources of acoustical power in an array about and spaced-apart from the surface or at various depths below the surface in a borehole(s) and/or well(s), directing a volume of acoustical excitation from the sources into the region containing the material to be recovered, the excitation in the form of either controllable sinusoidal, square, pulsed, or various combinations of these three waveforms, and controlling the phasing, frequency, power, duration, and direction of these waveforms from the sources to increase and control the intensity of acoustical excitation in the region

Abstract: An ocean wave energy conversion system comprising a float adapted to ride on the surface of the ocean in reciprocal vertical motion in response to ocean wave front action, first support means extending downward from the float deeper into the ocean; and, magnetohydrodynamic electric generator means mounted to the first means at a level of attenuated vertical wave action in the ocean, the generator comprising a duct arranged to channel the flow of sea water vertically therethrough in response to the reciprocal vertical motion of the float, second means including magnetic field elements for applying a strong magnetic field cross-wise to the longitudinal axis of the duct and the flow of sea water therethrough, electrode means positioned in the duct and in contact with the flowing sea water therethrough such that the electrode means receives electrical energy generated by magnetohydrodynamic phenomenon as the sea water passes upwardly and downwardly in a relative manner through the magnetic field, and transfer mea