Abstract: A power system is disclosed that includes a chassis configured to house one or more boards in which the boards are electrically coupled to one another. The boards are configured to receive external power and to output power using a plurality of different voltages. The boards are configured to receive power from at least one internal power source electrically coupled boards and to output power using a plurality of different voltages. The boards include one or more converters configured to convert power. The one or more converters are thermally interfaced with one or more portions of the chassis.

Abstract: A power system is disclosed that includes a chassis configured to house one or more boards in which the boards are electrically coupled to one another. The boards are configured to receive external power and to output power using a plurality of different voltages. The boards are configured to receive power from at least one internal power source electrically coupled boards and to output power using a plurality of different voltages. The boards include one or more converters configured to convert power. The one or more converters are thermally interfaced with one or more portions of the chassis.

Abstract: A power system is disclosed that includes a chassis configured to house a first board, a second board, and a third board, in which the boards are electrically coupled to one another. The first board is configured to receive power and to output power at a first voltage and a second voltage. The second board is configured to receive power from the first board or at least one internal battery electrically coupled to the second board and to output power using at least two voltages. The third board is configured to receive power from the second board and to output power at two voltages. The boards include one or more converters configured to convert power. The one or more converters are thermally interfaced with one or more portions of the chassis so as to conduct heat into a respective portion of the chassis.

Abstract: A power system is disclosed that includes a chassis configured to house a first board, a second board, and a third board, in which the boards are electrically coupled to one another. The first board is configured to receive power and to output power at a first voltage and a second voltage. The second board is configured to receive power from the first board or at least one internal battery electrically coupled to the second board and to output power using at least two voltages. The third board is configured to receive power from the second board and to output power at two voltages. The boards include one or more converters configured to convert power. The one or more converters are thermally interfaced with one or more portions of the chassis so as to conduct heat into a respective portion of the chassis.

Abstract: The present invention relates to a blade folding apparatus that may incorporate an overhead blade lifting system that reduces binding loads on blade pins induced by blade weight and pitch, and a folding mechanism that removes the necessity of personnel with external guide-poles to rotate main rotor blades. The apparatus may include flap locks, an overhead lifting system support structure attached to the flap locks, and two blade support beams to create and support a lifting point near each blade's longitudinal and lateral center of gravity. The blade support beams may be fitted with an articulation mechanism that lifts and/or lowers the overhead lifting structure. The apparatus facilitates rapid folding of the main rotor blades, and, when used with blade clamping mechanisms, is capable of aiding in the removal and/or the re-installation of the main rotor blades without external lifting mechanisms.

Abstract: A method cleans a plurality of filters in parallel, each filter having an inlet side and an outlet side separated by a filter barrier. In an operational phase, water is filtered using a plurality of the filters, by passing the water through the filter. In a cleaning phase, at least one of the filters is cleaned while the other filters are filtering water in the operational phase. Each filter is cleaned by supplying sodium hypochlorite to an inlet side of the filter when the filter is off-line. The inlet side of the filter is allowed to soak in the sodium hypochlorite for at least 30 seconds without the sodium hypochlorite being pressurized through the filter barrier during the soaking process. The filters are cycled through the cleaning phase such that each filter is repeatedly cleaned while other filters are filtering in the operational phase.

Abstract: A document is compared to the documents in a document collection using a hash algorithm and collection statistics to detect if the document is similar to any of the documents in the document collection.

Abstract: A system of having a circuit having an electrical coil configured to generate a magnetic field based on properties of a surrounding space and an object presented to the electrical coil and a sensor configured to sense inductance and resistance of the electrical coil and to discriminate the object presented to the electrical coil in accordance with the sensing. A precision variable resistor to control resistance of an in-loop photoresistor with an out-loop photoresistor that are located parallel to each other.

Abstract: A document is compared to the documents in a document collection using a hash algorithm and collection statistics to detect if the document is similar to any of the documents in the document collection.

Abstract: A blade clamp for a helicopter blade having a width and leading and trailing edges includes a first clamping part, a first flexible liner attachable to the first clamping part, a second clamping part, a second flexible liner attachable to the second clamping part, a hinge mechanism to pivot the first clamping part and the first flexible liner with respect to the second clamping part and the second flexible liner and a connector provided opposite to the hinge mechanism. The flexible liners evenly distribute clamping force upon the blade clamp to prevent damage to the blade. The hinge mechanism allows the first and second clamping parts to open wide enough to safely and easily accommodate a helicopter blade during removal and installation of the blade.

Abstract: An active sonar detection system may include a transmitter, which may project into the transmissive medium signals of any frequency, amplitude or phase using one or more transducers. A transmit beamformer to provide transmission directionality may also be included. Generated transmit waveforms may have different temporal and frequency spectra that are adapted for different purposes.

Abstract: A multiple unit surface effect vehicle movable through an aquatic environment is provided including connected units and lift fans. The multiple unit surface effect vehicle may further include a coupling system and/or a plurality of skirt portions connecting one of the connected units with another of the connected units. The multiple unit surface effect vehicle includes the connected units connected to form a continuous movable unit movable in an aquatic environment. Each connected unit includes a forced air containment chamber defined within each of the connected units. The forced air containment chambers of each of the connected units are connected to form a continuous pressurized air cushion. The lift fans force air into the forced air containment chamber to pressurize the continuous pressurized air cushion.

Abstract: A method cleans a plurality of filters in parallel, each a filter having an inlet side and an outlet side separated by a filter barrier. In an operational phase, water is filtered using a plurality of the filters, by passing the water through the filter, from the inlet side to the outlet side. These filters may be a hollow fiber membrane. In a cleaning phase, at least one of the filters is cleaned while the other filters are filtering water in the operational phase. Each filter is cleaned by supplying sodium hypochlorite to the inlet side of the filter when the filter is off-line. The inlet side of the filter is allowed to soak in the sodium hypochlorite for at least 30 seconds without the sodium hypochlorite being pressurized through the filter barrier during the soaking process. This oxidizes organic contaminates near the surface of the filter. The filters are cycled through the cleaning phase such that each filter is repeatedly cleaned while other filters are filtering in the operational phase.

Abstract: An image projection system that communicates an image into the air includes screen material particles, a screen generation device, a delivery device and a light projecting system. The screen generation device disperses the screen material particles from the screen generation device at a targeted screen location, thereby forming a projection screen. The delivery device launches the screen generation device from a launch location to the targeted screen location in the air. The light projecting device projects light from a projection location onto the screen to form the image on the screen so as to be visible from an observation location of a viewer.

Abstract: A document is compared to the documents in a document collection using a hash algorithm and collection statistics to detect if the document is similar to any of the documents in the document collection.

Abstract: A blade clamp for a helicopter blade having a width and leading and trailing edges includes a first clamping part, a first flexible liner attachable to the first clamping part, a second clamping part, a second flexible liner attachable to the second clamping part, a hinge mechanism to pivot the first clamping part and the first flexible liner with respect to the second clamping part and the second flexible liner and a connector provided opposite to the hinge mechanism. The flexible liners evenly distribute clamping force upon the blade clamp to prevent damage to the blade. The hinge mechanism allows the first and second clamping parts to open wide enough to safely and easily accommodate a helicopter blade during removal and installation of the blade.

Abstract: An image projection system that communicates an image into the air includes screen material particles, a screen generation device, a delivery device and a light projecting system. The screen generation device disperses the screen material particles from the screen generation device at a targeted screen location, thereby forming a projection screen. The delivery device launches the screen generation device from a launch location to the targeted screen location in the air. The light projecting device projects light from a projection location onto the screen to form the image on the screen so as to be visible from an observation location of a viewer.

Abstract: A multiple unit surface effect vehicle movable through an aquatic environment is provided including connected units and lift fans. The multiple unit surface effect vehicle may further include a coupling system and/or a plurality of skirt portions connecting one of the connected units with another of the connected units. The multiple unit surface effect vehicle includes the connected units connected to form a continuous movable unit movable in an aquatic environment. Each connected unit includes a forced air containment chamber defined within each of the connected units. The forced air containment chambers of each of the connected units are connected to form a continuous pressurized air cushion. The lift fans force air into the forced air containment chamber to pressurize the continuous pressurized air cushion.

Abstract: A simulation system for generating movie “scenes” that show interactions between simulated entities that populate a synthetic environment used to support training exercises and equipment. The simulation system includes a simulation engine that produces simulated entity state and event data; a visualization suite that allows an editor to display 2-D and 3-D views of the synthetic battlespace and to hear the battlefield and communications sounds associated with an interaction; a digital data logger that records simulation entity state and event data; an editing processor that provides the functionality required to identify, filter, specify, and organize the “scenes” that make up an interaction of interest; a “scene” generator that converts the entity state and event data for the set of scenes that make up an interaction into a digital movie file; and a repository for storage of complete movies and copying of movies to removable media.

Abstract: A method and apparatus for decoding forward error correction (FEC) encoded data. A stream of units of FEC encoded bits are received, where the units are derived from a transmitted signal, where each unit represents a one-bit data value, and where each unit includes correctness bits that together reflect a level of probability that the one-bit data value represented by the unit differs from corresponding bits in the signal before it was transmitted. The stream of units of FEC encoded bits are decoded by using the quality level of bits to perform soft-decision convolution decoding on the stream of units of FEC bits, where the soft-decision convolution decoding produces, for block decoding, a stream of symbols made up of bits.