Abstract: A night guiding device for self-propelled missiles, comprising a daylight sighting telescope and an infrared goniometer, the unit being called a localizing apparatus, for detecting an infrared missile-borne source, or tracer, a night sighting thermal telescope, a visualization device associated therewith, further comprising a computer arranged for receiving through storing, amplifying and processing means, on the one hand signals transmitted by the localizing apparatus and characteristic of the missile position in relation to the optical axis of said localizing apparatus, and on the other hand signals supplied by the thermal telescope and characteristic of the missile position in relation to the optical axis of said thermal telescope, said computer supplying to said visualization device, signal representative of the difference between the signals received respectively from the localizing apparatus and the thermal telescope.

Abstract: A car exhaust gas purification device controlling circuit wherein a deviation between an output of an exhaust gas sensor and a set value is converted into a time-width signal and a proportional electromagnetic valve is controlled by an integrated output of the time-width signal to control the air-fuel ratio around a theoretical air-fuel ratio, whereby an offset of air-fuel ratio due to hysteresis of such as the proportional electromagnetic valve used for controlling the air-fuel ratio is eliminated.

Abstract: The various air motors of a rock drilling rig are supplied with oil through oil lines which are furnished with predetermined metered oil flows from positive displacement pumps that are operated in synchronism with each other by an air operated oscillator. There is a normally closed shut-off valve in each oil line. The respective shut-off valve is opened when the respective air line is pressurized. When a shut-off valve is closed, the respective metered oil flow escapes through a pressure relief valve.

Abstract: A fuel injection apparatus for internal combustion engines, having a digital control apparatus for producing an actuating electrical signal for the engine injection valves proportional to the engine speed and the quantity of air aspirated by the engine, and a signal correction apparatus for modulating the injection actuating pulse in accordance with other parameters of the engine, such as fuel enrichment during starting or warmup of the engine, adjustment for idle, partial load, and full load conditions, and adjustment for the air-fuel ratio for both short time variable conditions, and long time variations such as variations in barometric pressure. This correction apparatus includes auxiliary storage register, interconnected to numerical frequency converters, which produce the correction signal from the information stored in the auxiliary storage registers.CROSS REFERENCE TO RELATED APPLICATIONSU.S. Application of Rolf Daumer et al, Ser. No. 742,715, filed Nov. 17, 1976.

Abstract: The air flow rate and the speed of an internal combustion engine are sensed and translated into pulse trains of variable frequency. During a time interval defined by the rpm related signal, a digital counter receives and counts the air flow rate frequency. Subsequently, the contents of this counter are counted out by a pulse train whose frequency is adjustable depending on other engine conditions such as start-up, warm-up, idling, full-load and the like. The apparatus also includes circuitry for generating a control pulse of minimun length.

Abstract: A fuel injection device comprises an air valve located upstream of an operator actuated throttle in the air intake passage. The air valve is actuated by airflow through the passage and opens in proportion to the increase in the flow rate of air. Fuel under pressure is delivered to the air passage through an electrically energized injector valve. A metering system which is sensitive to the position of the air valve supplies the valve with repetitive electrical pulses during normal operation of the engine. During cranking, the metering system delivers a continuous energization signal to the valve for maintaining it permanently open. The pressure of the fuel delivered to the valve is substantially decreased during cranking, i.e. as long as a continuous energization signal is delivered to the injector valve.

Abstract: A jet propulsion engine and a method of operating a jet propulsion engine for propulsion of an aircraft over a wide range of speed from zero to supersonic. The engine is a turbofan type with a duct burner and with separate variable exhausts from the duct burner and from the gas turbine engine. The gas turbine core engine includes a gas generator and a low pressure turbine which drives the fan. The fan includes variable outlet guide vanes and the low pressure turbine includes a variable first-stage nozzle. The engine is operated as a normal duct burning by-pass jet engine from zero air speed up to about Mach 3. The fuel to the core engine is shut off through a transition range of speeds. Above this range the engine operates with only the duct burner supplied with fuel, with the gas generator windmilling, and with the low pressure turbine continuing to drive the fan to supercharge the duct burner, which operates as a supercharged ramjet.

Abstract: A speed sensitive pressure regulator system includes a diaphragm of resilient flexible material positioned within a housing and forming an actuating chamber therein. A valve is associated with a passage and is movable between a first position at which fluid pressure in the actuating chamber is substantially equal to the fluid pressure in the passage and a second position at which the fluid pressure in the actuating chamber is less than the fluid pressure in the passage. The valve is connected to the diaphragm in a manner sufficient for biasing the valve toward the second position in response to pressurized fluid in contact with the diaphragm. A flyweight assembly is associated with the valve and is of a construction sufficient for moving the valve to its first position in response to rotation of the flyweight assembly above a preselected speed and for permitting the valve to move to the second position in response to a decrease in the rotational speed of the flyweight assembly below the preselected speed.

Abstract: An infrared radiation suppressor secured to the discharge end of a gas turbine engine has a series of movable vanes maintained in an open trailing edge configuration in which they form converging flow passages for the gases emanating from the gas turbine engine and passing between the vanes, thereby decreasing the gas static pressure at the vane trailing edges below ambient levels. Flow passages in heat exchange relationship with the duct walls of the suppressor carry ambient air through the passages to a point downstream of the vanes. The lowered static pressure at this point causes ambient air to flow through the passages and into the gas stream, thereby cooling the duct walls and the gas stream. The hollow center of the movable vanes are also open to ambient air at the outer ends. The lowered static pressure at the vane trailing edges also causes large quantities of ambient air to enter into the hollow vanes and out the trailing edges into the gas stream further cooling the gases.

Abstract: A projectile fired from a gun barrel, aimed in straight flight upon a small arget, has a massive armor-piercing body spacedly surrounded by a sleeve which defines with its outer surface a ring channel that may also serve as a combustion chamber for generating additional thrust. The sleeve, whose cylindrical outer periphery provides guidance in the gun barrel, is axially divided into a rear portion rigid with the massive body and a relatively slidable front portion. In an initial forward position of this front portion, an annular shutter mounted on its inner surface obstructs the ring channel by engaging an annular shoulder on the body, the sleeve then effectively acting as a sabot which blocks the escape of combustion gases from the gun blast.

Abstract: This invention relates to a device for starting a rocket-driven missile whose filght course is directed opposite the flight course of a carrier aircraft, which comprises aerodynamically-acting braking means adapted to act upon said rocket-driven missile,Said braking means being adapted to be extended from a position of low resistance to a position of higher resistance,And means for separating said braking means from said rocket-driven missile upon completion of the braking operation.

Abstract: A hollow cooled blade or vane for a gas turbine engine is provided with cooling on certain areas of its interior surface by an impingement plate which is supported from and sealed to the blade interior by a pair of ribs.

Abstract: The invention described herein relates to a liquid spraying device capable of producing minuscule particles of liquid in a uniform pattern by having a thin material movably mounted for causing it to be continuously conveyed through a liquid, the material further having openings in its surface, by way in which constructed or processed, for transporting the liquid in film form. As the material emerges from this liquid, its surface being of such characteristics by shape and size of the openings and the material from which formed that, stressed free liquid films are caused to form in the openings thereof. Under certain conditions surface film will appear on the surface of the material which prevents the formation of free films. Means are therefore provided for removing this unwanted surface film in such a way that free films are caused to form in the openings of the affected portion.

Abstract: An electronic ignition device for an internal combustion engine comprises a capacitor supplied by a charging circuit, a thyristor controlling discharge of the capacitor into the primary of an ignition coil, and a control circuit including an oscillator successively producing non-conduction and conduction of the thyristor several times in response to each opening of a contact-breaker. The device also comprises an RC delay element and a bistable trigger controlled to prevent operation of the control circuit when the device is switched on while the contact-breaker is in a given position, said trigger permitting operation of the control circuit as soon as the contact-breaker comes into action.

Abstract: In a spark ignition internal combustion engine with power output controlled by a throttle, a throttle switch provides a wide open throttle signal and a knock sensor provides a knock level signal. A normal spark pulse train, corrected for intake manifold vacuum, engine speed and dwell angle, is fed through a shift register which delays each spark pulse by a fixed number of counts. A pulse train generator responsive to crankshaft rotation produces a crankshaft reference angle pulse each fixed number of degrees of crankshaft rotation; and these pulses are counted by the shift register to provide a normal spark timing.

Abstract: In a closed-loop mixture control system for internal combustion engines, the concentration of an exhaust composition contained in the emissions from the engine is compared with a predetermined value in a comparator to determine whether the fuel quantity is to be corrected in a direction to increase it or decrease it. The rate of change of the correction is controlled in response to a sensed acceleration or deceleration of the engine for a small duration of time to compensate for the error arising from the transport delay time of the engine at the instant of the acceleration or deceleration.

Abstract: A single pick-up coupled to sense engine crankshaft position can be utilized for both starting and running of the engine in an electronic spark timing advance control system. During starting, pulses from the pick-up are coupled via a zero crossing detector to the output ignition stage to cause spark plug firing at an essentially constant firing angle at or just slightly in advance of piston top dead center position. During running, the pulses from the pick-up reset, via a reset circuit, an integrator circuit so that a sawtooth waveform representative of engine crankshaft rotational position is developed. A desired timing signal derived from one or more parameters useful in controlling the time of ignition firing is compared against the sawtooth reference waveform and when a predetermined relationship between the two is attained, the ignition is fired. Should this predetermined relationship not be attained during a cycle of the sawtooth, the reset signal from the reset circuit forces ignition firing.

Abstract: An electronic ignition controller operable from a Hall Effect pickup Device in a ballast-resistorless, inductive-type ignition system for an automotive vehicle internal combustion engine and featuring programmed dwell and automatic shut-down timer circuits, which control current dissipation in the ignition coil. The programmed dwell timer circuit enables energization of the ignition coil for a controlled or substantially constant period of time over substantially the entire range of engine operating speeds up to a predetermined high engine speed above which the ignition system reverts to a constant duty cycle characteristic determined by the character of the triggering input or pickup device.

Abstract: 1.

Abstract: The embodiment of the invention disclosed is a conveyor roll having a cylindrical shell with integral end caps and axial sleeves extending inwardly from the end caps. The shell, end caps and sleeves are rotatably journalled about the shaft by roller bearings between the sleeves and the shaft. An internal labyrinth is provided in each sleeve between the bearing and the end of the shell, this internal labyrinth including a rotatable collar and a non-rotatable bushing carried respectively by the shell and shaft and having a series of facing cylindrical and annular surfaces providing a labyrinthine passageway of restricted cross-section extending from the bearing means to an annular outlet at the end of the shell. An external labyrinth is provided outside the end cap. This includes first and second annular flanges carried respectively by the shaft and shell and axially spaced from the annular outlet and from one another. These two flanges provide inner and outer radial passages.