Abstract: A method and apparatus for providing high pressure cooling air to the turbine vanes of a gas turbine engine is disclosed. A centrifugal compressor stage is interposed in the flow path of cooling air to the turbine vanes. The centrifugal compressor stage raises the pressure of the cooling air to a value substantially greater than the pressure of the combustion gases entering the turbine. The availability of high pressure cooling air allows the incorporation of improved cooling systems in the turbine vanes. Increasingly effective cooling systems are necessary to the continued development of low pressure drop combustion chambers which discharge high temperature gases to the inlet of the turbine.

Abstract: An engine is shown having means for providing cooling fluid to turbine blades on a disk while providing sealing means between the blade roots and cooperating disk slots and providing means for retaining the turbine blades on their disk. The device comprises a full ring coverplate which engages a small coverplate fixed to each blade. A small coverplate is fixed, such as by bonding, to the forward end of the root section of each blade and contoured so that it extends over the edges of the root and bears against the forward side of the disk when the blade root has been inserted in a blade slot. The blades are held in the disk by the full ring coverplate which engages all of the small coverplates at a midpoint between the inner and outer ends of the root. The position of the full ring coverplate can be adjusted to provide and vary a biasing force against the small coverplates to maintain a force keeping the small coverplates against the disk.

Abstract: A flexible missile shield disposed about a turbine element. This shield is deflectable to dissipate and absorb kinetic energy associated with flying objects emanating from the turbine apparatus and able to maintain the flying objects within a predetermined volume surrounding the turbine.

Abstract: To aid in maintaining at a desired temperature a fluid being propelled through a fluid-circulating pump, a jacket means is provided which has a hollow housing of heat-conductive material substantially surrounding the body of the pump and through which a temperature controlling fluid is circulated in heat-transferring relation to the body of the pump.

Abstract: A sectionalized turbine wheel mounted for rotation about a vertical axis and having a plurality of turbine blades mounted to its circumference. There is an outer circumferential feeder pipe surrounding a distribution pipe that defines a distribution chamber, which in turn leads through a plurality of vane assemblies to the turbine blades. The turbine blades are substantially enclosed in a housing structure which provides an annular downward opening. Water under pressure flows into the feeder pipe, thence into the distribution chamber and through the vane means to impinge on the turbine blades, from which the water is discharged in a downward direction.

Abstract: A pump is provided with a stationary impeller housing having a motor driven diagonal impeller mounted therein. A diffuser is mounted coaxially with the impeller for converting the kinetic energy of the pumped fluid into a pressure head. A hollow body mounted in the diffuser defines a diffuser passage in which curved diffuser blades are mounted. The impeller has a conical hub having a diameter equal to 40-80 percent of the maximum diameter of the impeller blades.

Abstract: A diffuser for a radial-flow compressor with a circumferentially and radially extending annular splitter plate dividing the entrance portion of each diffusing passage into two parallel passages.

Abstract: An inspection port structure is provided for turbines to allow examination of interior regions of the turbine for possible damage or deleterious conditions in the flow path. A sealing member is provided in the port with spring means for locking the sealing member in place during normal operation. The sealing member can readily be removed when desired, to permit the insertion of a suitable instrument for internal inspection, and can then be easily replaced in a manner which reliably reestablishes the necessary seal.

Abstract: The purpose of this invention is a propeller capable of generating high tst at reduced noise levels, weight and drag. The propeller blades employ a tangential slot along the trailing edge of each propeller blade and circulation control blowing from the tangential slot over the trailing edge. Lift is generated by the coanda blowing. The lift is proportional to the momentum flow of the air out of the slot and is substantially independent of the rotational velocity. Additionally a circulation control shroud expands the thrusting slipstream of the propeller so that the shroud diffusion angle is increased and the average exit velocity is reduced, thereby increasing efficiency and reducing noise.

Abstract: A pump unit for liquid-cooled internal combustion engines preferably for vehicle engines and of the type including a pump unit housing, an impeller, a drive member operatively connected to the impeller to rotate the same and forming therewith a rotatable assembly, bearing means supporting the drive member for rotation relative to the housing and a seal adapted to seal an annular space between the rotatable assembly and housing characterized in that the axial length of the pump unit as measured from the impeller to the oppositely located end of the drive member and the pitch diameter of the bearing are of about the same order of magnitude.

Abstract: An axial fan operative to control the developed air volume and pressure by varying the pitch of the fan blades. The fan housing is adapted to be connected to the main air conduit as an axial continuation thereof and centrally mounts a fan motor which directly drives the fan. The blade pitch control mechanism adjacent the fan utilizes an axially reciprocable actuator coupled through linkages to each of the fan blades whereby the pitch of all of the blades is simultaneously changed upon movement of the actuator. The control mechanism is contained within the fan hub and within a cylindrical central fairing located adjacent the fan and radially inwardly of the blades. This protects the control mechanism and reduces drag. The actuator is moved axially by means located externally of the main air conduit and connected to the actuator by a single lever arm extending through the central fairing and main air conduit.

Abstract: A vacuum turbine for a drill has a housing of tubular configuration about an axis and has a sleeve disposed within the housing and also of tubular configuration about the axis. The sleeve is spaced from the housing to provide an annular air passage between them. A pair of bearings within the sleeve supports a turbine shaft rotatable about the axis. At one end of the shaft is a turbine runner including blades extending across the air passage and also including a shroud at the periphery of the blades and having a rim face normal to the axis and in very close axial relationship to an end face on the housing to reduce the travel of air therebetween.

Abstract: A turbodrill comprises a housing in which there are fixed stators having blades forming a circular pattern and defining guide passages for the flow of drilling fluid fed by mud pumps, and a shaft mounted on a thrust bearing and having rotors fixed thereto, the blades of the rotors also forming a circular pattern and having the direction opposite to the stator blades so that the rotor rotates relative to the stator. The rotor and stator blades are shaped such a manner that an angle .theta. between the tangents to the middle line of the profile at the inlet and outlet edges of the blade determining the profile camber is selected in accordance with the relationship .theta. = 180.degree. - (from 4.5 to 7).alpha..sub.1, an angle .alpha..sub.2 between the line perpendicular to the axis of the pattern and the tangent to the middle line of the profile at the outlet edge of the blade is selected in accordance with the relationship .alpha..sub.2 = (from 3.5 to 6).alpha..sub.1, wherein .alpha..sub.

Abstract: An outlet diffusor for a centrifugal compressor built up from two planar discs and a number of elements shaped as segments of a circle interposed therebetween; each element is defined by two opposed shaped edge faces, which together with corresponding faces in adjacent segments form tubular passages in the diffusor; the geometrical form of these passages may be varied by altering the cross section of the channels or the spacing between the segments, and by mounting the segments so they are angularly adjustable so that the flow characteristics of the diffusor may be altered and during use.

Abstract: A gear-driven transport ring rotates around a toroidal chamber. Spaced sealing rings carried by the transport ring divide the chamber into compartments which serve to transport liquid from a feed station to a discharge station. Gas or vapor pressure is employed at the discharge station to bring the liquid up to desired discharge pressure and to transport it to, for example, the feed water intake of a steam boiler.

Abstract: A method and apparatus for sensing the velocity of a fluid flow, especially within the boundary layer of a fluid flow path through a compressor. A reference flow under constant pressure is established through an orifice dividing two plenum chambers, and directed through a flow sensing opening in a probe positioned in the flow to be sensed. The flow sensing opening is slightly larger than the orifice. A relative pressure indicator connected to the two plenum chambers indicates the velocity of the sensed fluid flow. The flow sensing opening is arranged so that the normal reference flow of fluid therethrough is in the same direction as the normally expected flow direction of the flow to be sensed.

Abstract: A double action fluid pump consisting of the combination of a rotor with multiple blades feathered at an angle perpendicular to the fluid surface, all enclosed within a casing which is contoured to the said rotor-blade assembly and its its related fluid movement area, said casing having a main suction chamber and a discharge chamber in line with each other and in line with the lower one third periphery of the rotor which requires the fluid to flow in a straight line through the pump. A supplementary suction chamber is located in the upper quadrant of the casing on its discharge side which furnishes additional fluid to the main suction chamber to balance the vacuum-pressure relationship of the two suction chambers and cause a rise of pressure behind the blade travel path, thereby minimizing or eliminating blade cavitation as well as increasing the supply and momentum of fluid through the main suction chamber.

Abstract: A rotary cell pump is provided for the conveying of sausage stuffing and the like. The pump has a stationary hub and a stator surrounding the hub in concentric relation therewith and an eccentric rotor. The rotor divides the pump into an inner pumping chamber for the sausage mix and an outer pump chamber forming an air pump to evacuate air from the sausage mix.