Abstract: A method for providing a pilot with information associated with at least one region of a field of view visible to the pilot from within a cockpit without requiring a visual display. The method includes the steps of determining an eye gaze direction relative to a given frame of reference for at least one eye of the pilot, determining a reference direction relative to the given frame of reference, comparing the eye gaze direction with the reference direction, and if the eye gaze direction and the reference direction are equal to within a given degree of accuracy, generating audio output audible to the pilot and indicative of information associated with the reference direction.

Abstract: A micro-electromechanical optical inertial sensing device comprises a CMOS chip (3), comprising at least one integrated photodiode (6) and analog electronics; an elastically suspended proof mass (1); and a light source (4). A light beam from the light source casts a partial shadow of the proof mass over the photodiode when the proof mass is at rest. When subjected to an inertial movement, the proof mass swings causing the partial shadow to shift and modulate the illumination of the photodiode. An output current signal from the photodiode is processed by the analog electronics to generate measurement results.

Abstract: Method and apparatus for the storage and delivery of process gases to laser generators. The process gas is cooled to a few degrees K, at the required work pressure, to reach a desired density, in the order of hundreds of kg/m3. The cooled gas is then stored in a cryogenic environment at the work pressure. At the moment of use, the process gas is gradually released from the cryogenic environment and concurrently heated. the process gas flow rate from the cryogenic environment is controlled, so as to obtain the required work flow rate. The heat supplied to the gas is controlled, so as to maintain it constantly at the required work pressure. The heating of the process gas may be controlled synchronically with the flow rate of its release from the cryogenic environment to maintain the pressure substantially at its work value.

Abstract: An acoustic warning assembly capable of being launched from an underwater vehicle while being underwater. The acoustic warning assembly includes an acoustosensitive member for collecting above-surface acoustic signals. The acoustic warning assembly also includes a carrier member launchable from the underwater vehicle, the carrier member is designed to carry the acoustosensitive member above-surface. The acoustic warning assembly also includes a communication medium for communicating between the acoustosensitive member and the underwater vehicle, for transmitting the above-surface acoustic signals collected by the acoustosensitive member to the underwater vehicle.

Abstract: A resistance type pulse welding apparatus for workpieces, including a handpiece, a pair of electrodes mounted at the tip of the handpiece adapted for delivering weld current pulses to a workpiece to be welded, an electrochemical capacitor providing a high-current, low-voltage power source, and a triggering means located between the electrochemical capacitor and the electrodes to discharge the energy stored in the electrochemical capacitor through the electrodes upon the sensing of a threshold pressure between the electrodes, indicative of the forcing of the electrodes against the workpiece.

Abstract: A tracking device, a related combat simulator, and methods for their use. The tracking device comprises a SPS receiver, a communications interface for reversibly mounting therein a communications card, a combat simulation device interface, and a control unit for receiving location data from the SPS receiver, for transmitting the location data via the communications interface, and for exchanging combat simulation data between the combat simulation device interface and the communications interface. The combat simulator includes a control center for controlling several tracking devices. For civilian applications, the combat simulation device interface is replaced with an alarm button.

Abstract: A device for reducing base drag on cylindrical rear truncated objects moving in a fluid, caused by the shedding of vortices at the base of the object. The device consists of ring shaped winglets attached to the rear of the object which may be sub-divided into a plurality of hinged partial winglets. The parameters of distance of winglet from cylinder shaped object, winglet circumference, angle, profile and chord length may be varied automatically for optimum drag-reducing capability.

Abstract: A daylight operable, scan-free, laser spot locating device for locating a laser spot pointed at an object.

Abstract: A device (10) for purifying a gas stream (30) made up of a plurality of DBD cells (12a, 12b, 12c) in series and, for each of the DBD cells (12a, 12b, 12c), a power supply (24a, 24b, 24e) for providing alternating current to each DBD cell (12a, 12b, 12e).

Abstract: A method of reducing sidelobes of an antenna induced by a blockage in a radome covering the antenna, which includes providing at least one passive tuning element between the antenna and the blockage, and adjusting the position of the tuning element to reduce the blockage-induced sidelobes. An antenna apparatus which includes an antenna, a radome covering the antenna and including a blockage tending to induce a sidelobe in the radiation pattern of the antenna, and at least one passive tuning element between the antenna and the blockage for reducing the blocking-induced sidelobes.

Abstract: In a weapons system of the type in which a round having a case is fired from a gun, the round including a fuze processor, the round further made up of a firing circuit having a resistor and also having two contacts in the case of the round, the gun having two contacts which contact the two contacts of the round when the round is in the gun and ready to fire, the gun being fired by applying a voltage in excess of a certain threshold to the contacts of the round via the contacts of the gun, the weapons system including a fire control system outside the gun.

Abstract: Method and apparatus for optimally decoding messages from CDMA signal sent by a plurality of users and received asynchronously at one receiver, using a minimal number of computations and minimal memory and processing resources. It is based on a novel approach to signal correlation, as well as to subsequent decoding by decorrelation, that requires a correlation period of only one symbol length, by providing for each user a pair of partial signatures sequences, with which the signal is correlated, deccorelating the results with the inverse of the cross-correlation matrix of all partial sequences, and combining the resultant partial symbol estimates--to obtain final estimated symbol values. The partial sequences are formed by separating each original sequence at a point corresponding to the estimated symbol boundary time, relative to an arbitrary correlation window, of one symbol length.

Abstract: A method for creating a surface having a fast changing temperature, comprises providing a heat exchanger coupled to an orifice opening into a jacket which is in contact with the surface to be heated and cooled, the jacket forming a reservoir capable of housing a fluid in contact with the surface to be heated and cooled, and providing two gas sources, each gas source being independently connected to the said heat exchanger, one source providing a first gas, which liquefies when it expands through the orifice, and the other gas source providing a second gas, having an inversion temperature lower than the temperature obtained by the liquefaction of the first gas, and causing the exhaust gas flowing out from the jacket, to flow through the said heat-exchanger to preheat or precool the inflowing gas, as the case may be, and further causing the said first and the second gas alternately to flow through the said heat exchanger and orifice, to cool or to heat the surface; means being provided for allowing and stopping

Abstract: A FLIR staring array detector system for imaging an object scene using catadioptric optics has a cold shield efficiency approaching unity. The system provides a full format image of the object scene. The catadioptric optics include reflective objective optics for providing an intermediate image of the object scene and refractive relay optics for providing the full format image. The system further includes a staring detector for receiving the full format image.

Abstract: A multiple access communications system reuses a set of either N carrier frequencies or time slots in adjacent communications sites to provide more than N or T minimally cross-correlated frequency or time hopping communications channels respectively. A first set of communications channels is associated with a first of the communications sites. No two of the channels in the first set employ the same frequency or T time slots at the same time. A second set of communications channels is associated with a second of the adjacent communications sites. No two of the channels in the second set of channels employ the same one of the N carrier frequencies or T time slots at the same time. One or more sets of the minimally cross-correlated channels are further defined so that none of the channels in such sets employ the same frequency at the same time as more than a predetermined number of the channels in another of the sets of the minimally cross-correlated frequency-hopping communications channels.

Abstract: An optical fiber dispenser for the payout of optical fiber from a moving vehicle so as to maintain a wire communication link with a control station. The dispenser has a bobbin carrying a multi-layer optical fiber pack and holding heating means connectable to a power or heat supply.

Abstract: A monolithic semiconductor igniter for igniting a charge of explosive material. The igniter includes a semiconductor substrate, and one or more fuse which is diffused in the semiconductor substrate such that the fuse ignites the charge when an electrical current is passed through it. Also provided is a process for manufacturing a monolithic semiconductor igniter. The process includes providing a semiconductor substrate, and diffusing one or more fuses in the semiconductor substrate. An additional embodiment provides an igniter with multiple sawtooth bridge elements. The resistance of this igniter may be adjusted by cutting individual bridge elements.

Abstract: A dual-mode surveillance system with a radar and an electro-optical mode. The radar mode is afforded by a conventional manned radar surveillance station fitted with an imaging assembly. The electro-optical mode is afforded by means of at least one electro-optical surveillance station with tracking capability located remote of the manned radar surveillance station.

Abstract: An add-on reactive armor element effective against normal and skew attack. The element is a multilayer composite body in which each layer tightly bears against each contiguous layer, which multilayer composite body includes an outer cover, at least one explosive layer, at least one intermediary inert body and a base plate. The intermediary layer or layers may be, for example, of aluminium, glass or ceramics.

Abstract: A method of manufacturing a bobbin made essentially or partially of a curable resin comprises the steps of: a) providing a mold consisting of a male portion and of a female portion, the gap left between the said female and the male portions, in their operational mounted position, being of the shape and dimensions of the bobbin which it is desired to produce, the mold being provided with a resin inlet and vacuum port in communication with the gap; (b) laying on the surface of the male part of the mold, or winding thereon, any element or material which it is desired to embed within the resin; c) inserting the male part of the mold into the female part thereof and securely connecting the two parts, the two parts, when connected, being essentially sealed against pressure loss along their contact surfaces; d) causing a curable resin to flow into the gap through the resin inlet, while applying a vacuum at the vacuum port, until the empty space provided within the gap is substantially entirely filled with resin; e)