Abstract: In a compressor there is a hermetic case (1) having a high pressure gas outlet (1a) that houses a cylinder block (3) defining a gas suction chamber (7) and a gas discharge chamber (8). A main gas discharge tube (9) has an inlet end (9a) in fluid communication with the gas discharge chamber (8) and an outlet end (9b) communicating the gas discharge chamber (8) with the gas outlet (1a) of the case. At least one gas discharge auxiliary tube (10) is provided with an inlet end (11) receiving gas from the discharge chamber (8) and an outlet end (12) to provide the gas to the gas stream flowing in the main gas discharge tube.

Abstract: The arrangement comprises a swirler for producing at least one air stream for mixing with a supply of fuel but wherein the supply of fuel is initially injected into at least one zone adjacent a respective air stream but shielded (by 26) therefrom whereby fuel-rich pockets of fluid are formed in the zone(s). The pockets ensure flame stability at least at lower power settings. The zone is defined by a wall of the swirler. The fuel is injected through nozzles. Additional nozzles for supplementary supply of fuel may be provided in a block. A plate is arranged between the block and the swirler.

Abstract: A variable capacity single-headed piston type compressor having a cylinder block defining therein a plurality of cylinder bores in which single-headed pistons are reciprocated so as to compress refrigerant gas in response to a rotation of rotation-to-reciprocation converting unit arranged in a crank shaft defined by the cylinder block and a front housing hermetically attached to a front end of the cylinder block, the crank chamber being provided with a suction gas inlet port formed so as to open into the crank chamber, a rear housing hermetically attached to a rear end of the cylinder block and defining a suction chamber for the refrigerant gas before compression and a discharge chamber for the refrigerant gas after compression, the suction chamber being in fluid communication with the crank chamber so as to receive the refrigerant gas from the crank chamber via a fluid passageway for the suction of the refrigerant gas, and a flow regulating valve arranged in the fluid passageway to adjustably change the cros

Abstract: A transition piece for connection between a gas turbine combustor and a stage of the gas turbine, the transition piece being generally tubular and having an upstream end for connection to the gas turbine combustor and a downstream or aft end for connection to the turbine stage, the aft end defined by radially inner and outer sides, and wherein the aft end is formed with a peripheral rib extending about the end and wherein at least one of the radially inner and outer sides has an external frame support secured thereto and extending substantially completely between the opposite sides which provides resistance to external pressure at the aft end while permitting the transition piece to expand thermally.

Abstract: A noise reduction system is provided for installation on a bypass turbine having a core engine, an outer casing and a thrust reverser. The system is comprised of an acoustically treated nose cowl conventional for the engine; a respaced inlet guide vane upstream of the core engine for reducing wake disturbances striking the engine fan; a flow diverter downstream of the core engine for turning fan air inward toward the engine center line and for turning core air outward; a structure for supporting and positioning said flow diverter relative to the engine; a core flow expansion chamber device for slowing the peak velocity of the exhaust gas prior to exhausting it to the atmosphere; and an acoustic tailpipe assembly configured to define an outlet area sized and shaped to compensate for the mass flow loss created by the core flow expansion chamber device.

Abstract: The invention relates to a device 1 for creating pressure, especially for use as an air pump or a standing compressor, with a stepped housing which is provided with at least one valve connection and whereby a first 8 and a second pressure chamber 61, 62 form a part of the housing's interior; the volume of the former can be altered by a piston and a seal 60 which is effective in only one direction connects the pressure chambers 8, 61, 62. It is proposed that the disadvantages of the known devices, a considerable expenditure of energy being necessary to obtain the final pressure, can be eliminated in that the second pressure chamber comprises two individual pressure chamber sections 61, 62 which are coaxial to the first pressure chamber 8 and which are in a working connection.

Abstract: An oil pump apparatus incorporates, an oil pump housing, and a rotor located in the oil pump housing, wherein the rotor forms a first set of pockets having a capacity increasing toward the rotating direction of the rotor and a second set of pockets having a capacity decreasing toward the rotating direction of the rotor. The apparatus further includes a plurality of suction ports connected with the first set of pockets, each of the suction ports being isolated from other adjacent suction ports, a discharge port connected with the second set of the pockets, and a control valve.

Abstract: In a method for keeping clean and/or cleaning, during operation, the inner surfaces affected by deposits of a gas turbine including a turbine part (2) and an upstream compressor part (3), the "fouling" is effectively prevented without disturbing the operating procedure by subjecting the inside of the gas turbine (1) to sound waves, at least at times, in particular from sound transmitters (8a, . . . , 13b) arranged on the gas turbine (1).

Abstract: A peristaltic pump and tube body system disclosed includes a pump housing, a pump rotor rotatably mounted in the housing, and a motor for driving the rotor. The housing has a pair of opposed side walls hinged and releasably latched to the housing whereby insertion and removal of a pump tube is facilitated. The rotor has two rollers disposed at 180 degrees to one another together with opposed rigid bearing surfaces inside the housing which squeeze the latch to produce a pumping action when the rotor is rotated in either direction.

Abstract: A fuel injection system for injecting gasoline or other fuel directly into the combustion chambers of an internal combustion engine including a pump that incorporates a rotary driven swash plate, a plurality of fuel pumping pistons radially separated from one another and operatively mounted for axial fuel pumping movement in a fixed barrel. A special bearing assembly and creeper plate is operatively interposed in the pump housing to transmit pumping forces of the swash plate to the pumping pistons while isolating the pumping pistons from rotation so that they stroke axially in the barrel. With this arrangement, check type valves are effectively used to control the inlet and discharge of fuel to and from the pumping chambers of the pistons eliminating rotary sliding valves with attendant heat build-up and undesirable fuel vaporization.

Abstract: The exhaust in a gas turbine engine is lined with stacks of hollow cooling blocks made of a composite material. Air is pumped into each stack and escapes into the exhaust flow from a slot between the blocks in each stack. In addition, the blocks contain passages so that some of the airflow escapes to a space between the stacks. The blocks are attached using special fasteners that does not create mechanical stresses on the composite material.

Abstract: A pumping system in accordance with the invention comprises n (n.gtoreq.1) piston or diaphragm primary pumping modules (P1 to Pn) including each at least one pumping unit, connected by means of unidirectional valves (V11-V1n) respectively to n tanks (R1-Rn) containing fluids, a collecting head (CH) receiving the fluids delivered by the various primary modules, and a secondary piston pumping unit (S) for discharging the mixture of fluids collected in this head with a substantially constant flow rate. The pistons are shifted alternately for example by the translation motion of endless screws (9) driven by motors (12). A control set (17-20) associated with position detectors (AC1-ACn) and pressure detectors (C1 to Cn, Cs) proportion the fluids injected and adjust the phases, the piston strokes and their velocities in order to obtain a substantially constant discharge rate. Each primary module can also comprise a second pumping module also allowing a constant rate to be obtained during the suction phase.

Abstract: A method for the enhanced accuracy in dispensing from a fluid roller dispensing pump, wherein a keyed one way insertable cassette with pump compressible tubing is utilized with the fluid dispensing pump. The cassette holds and maintains a compressible plastic tube adjacent a roller pump, whereby the rollers of the pump compress the tubing to draw and accurately dispense predetermined exact amounts of liquids into vials, hypodermics and the like for accurate medical and/or laboratory use, and wherein slightly improper placement still provides dispensing but with not always detectable inaccuracies. The cassette is provided with positive proper position indicator elements to ensure both proper orientation and complete locking engagement to ensure accurate pumping and dispensing. In a preferred embodiment the pump embodies current use sensors which determine if the cassette, which causes the pump to use more current, is present. A keyed one-way cassette fitting prevents improper placement.

Abstract: A cam plate is mounted on a drive shaft in a crank chamber. A plurality of pistons are operably coupled to the cam plate. The rotation of the drive shaft is converted to a linear reciprocal movement to compress and discharge refrigerant gas containing oil mist. An extracting passage extracts the refrigerant gas from the crank chamber to remove an excessive pressure in the crank chamber. The extracting passage is open to an accommodating chamber which receives the refrigerant gas from the passage. A bearing is disposed in the accommodating chamber and receives an axial load acting on the drive shaft. A bolt absorbs an assembly tolerance of the bearing. A first protuberance is provided on the bearing protruding in a radial direction with respect to the drive shaft so as to become aligned with the passage. The first protuberance engages an inner surface of the accommodating chamber to prevent rotation of the bearing.

Abstract: A method and apparatus are provided for controlling rocket and/or jet engine thrust by producing a strong electric, magnetic or electro-magnetic field, and applying the field to deflect the thrust stream as it exits from the engine until the desired thrust vector is obtained. The method of modifying an exhaust plume produced by combustion of fuel and ejected from an exhaust nozzle of a vehicle comprises the steps of: generating a field and producing a flow of electrons across the stream of the exhaust plume for interacting with charged ions and particles in the exhaust plume to deflect the direction of the exhaust plume, and controlling the magnitude and extent of deflection to steer the vehicle to a desired course.

Abstract: Indications of non-recoverable compressor surge and blowout are provided by sensing compressor pressure, temperature and speed and comparing exhaust temperature with stored values and successive values depending upon instantaneous compressor speed and its derivative. Blowout indication is provided in timed intervals that are reset if surge indications are present.

Abstract: A linear actuator and pump unit for precision displacement of fluids in which a positive displacement, piston pump is coupled to an actuator mechanism having a carriage on a guide that is displaced by a rotary drive connected to a take-up drum on an anchor structure that has a pulley line anchored to the anchor structure looped around a first idler pulley on the carriage, looped around an idler pulley on the anchor structure, looped around a second anchor structure on the carriage, and connected to the take-up drum, the positioning of the carriage being detected by a sensor and the rotary drive that controls the precision operation of the piston pump.

Abstract: A combustor liner includes an inner layer for facing combustion gases, and an opposite outer layer for facing a cooling fluid. The outer layer has a greater coefficient of thermal conductivity than the inner layer for reducing temperature gradients in the liner. In a preferred embodiment, the outer layer significantly reduces temperature gradients in the liner which are caused by the varying cooling ability of impingement cooling air jets for more uniformly cooling the combustor liner and reducing the maximum temperature thereof.

Abstract: An automatic pneumatic pump preferably used with a waste water disposal system is disclosed. The pump forcibly introduces sludge-laden liquid into a tank (30) and in turn feeds the liquid to a filter unit (F) for filtering off the sludge. The pump has one air pressure pipe (61) and two air exhaust pipes (62, 63) provided to the upper portion of the tank (30). The air pipes (61 to 63) include their solenoid valves (71 to 73) which are selectively opened in accordance with the liquid level inside the tank (30). An air compressor (C) is mounted to the air pressure pipe (61) and selectively operated during a time when the liquid level inside the tank (30) reduces from a top level to a bottom level (S.sub.1). A vacuum pump (P.sub.2) is mounted to the second air exhaust pipe (63) and selectively operated during a time when the liquid level inside the tank (30) increases from the bottom level (S1) to the top level (S.sub.2).

Abstract: The invention pertains to an oil-sealed vacuum pump (1) with a pump chamber (8, 9), with a rotor 3 rotatively mounted therein, with a bearing piece (13) delimiting the pump chamber on the drive side and with a passage (35) in the bearing piece (13) which contains a coupling piece (37) used to interlock the rotor (3) with the shaft (36) of the drive motor (4) and a sealing ring (55) to seal off the coupling piece from the passage (35) in the bearing piece (13). To simplify manufacture of the pump, the invention proposes that the interlocking connections between rotor (3) and coupling piece (37) as well as coupling piece (37) and shaft (36) are effected from the faces, and that the coupling piece (37) is a support for a rotor (46) for an oil pump (45, 46), the pump chamber (45) of which is formed in the end plate (13).