31 results about "Dual-thrust" patented technology

A hybrid aerodynamic thrust system as a prime mover for aircraft or other high-speed vehicles. An arrangement of dual thrust resources to alternately accommodate low and high airspeed regimes. Electromotive force is used in lieu of hot section power turbines to achieve engine air compression or alternately perform thrust work at low velocities.

An optimized flywheel energy storage system utilizing magnetic bearings, a high speed permanent magnet motor / generator, and a flywheel member. The flywheel system is constructed using a high strength steel wheel for kinetic energy storage, high efficiency magnetic bearings configured with dual thrust acting permanent magnet combination bearings, and a high efficiency permanent magnet motor generator. The steel wheel provides a cost effective, high speed construction for the energy storage rotor.

A central drive shaft-sliding knuckle combined with a peripheral crank pin-swing link mechanism (CSPS) to provide an orbiting scroll with radial and axial compliant capability. The CSPS mechanism can be applied to both dual floating scroll and single floating scroll structures to improve performances of scroll devices, particularly in oil-free operations. In addition, an orbiting dual thrust ball bearing mechanism is provided to take thrust load in, for example, a floating scroll compressor with a CSPS mechanism.

The invention discloses a method for preparing a blank of a bimetallic thrust sliding bearing and the tooling used. The method includes the following steps: the first step, mixing alloy materials and auxiliary materials: uniformly mixing copper alloy particles, copper gas flux, and charcoal particles; The second step is to put the mixed alloy material and auxiliary materials into the mold, and press the two clamping flange devices on the two ends of the mold respectively through the external force application device; the third step is to place the induction heating device on the outer periphery of the mold , then rotate the mold, adjust the centrifugal speed and the heating power of the induction heating device, and melt the alloy particle mixture; the fourth step, remove the induction heating device, and place the bimetallic blank prepared in the third step in a mobile cooling device, First use the lower water spray device to cool for a certain period of time, and then turn on the upper water spray device to work together to cool the bimetallic blank to room temperature. Tooling consists of moulds, clamping flange units and mobile cooling units. The invention has reasonable process and can reduce the defects of bimetallic blanks.

The application provides a single-chamber double-thrust solid rocket motor and the rocket, wherein the motor includes a combustion chamber casing, a thermal insulation layer attached to the inner surface of the combustion chamber casing, a propellant grain located in the combustion chamber casing, and a The igniter at one end of the casing and the nozzle assembly arranged at the other end of the combustion chamber casing; the propellant grain is provided with an inner hole passing through both ends; The front wing slot extending to the direction, and the end of the inner hole close to the nozzle assembly is evenly provided with a radially extending tail slot; the ratio of the wing slot depth of the front wing slot and the tail slot to the maximum thickness of the propellant grain is greater than or equal to 0.81; The slope range of the axial slope of the rear wing of the grain column is 160-170 degrees. The present invention has a large thrust variation range and stable grain structure. When the thrust mode of the engine is switched, the combustion surface of the grain changes at a low speed, which can effectively reduce the pressure change speed of the combustion chamber and ease the thrust change speed.

Disclosed is a variable-pitch flight unit, comprising: a support and a plurality of rotor blades mounted on the support; each rotor blade comprises a drive shaft, a first flap, a second flap, a hub and a drive part; the drive part comprises a first slider sleeved on the drive shaft and located below the hub; the drive part further comprises a power device capable of driving the first slider to rise; the power device comprises a second slider, a variable-pitch rocker arm, a connecting rod and a steering engine; a first connecting part and a second connecting part are symmetrically disposed at two sides of the second slider; and the variable-pitch rocker arm has a first branch arm rotatably connected to the first connecting part and a second branch arm rotatably connected to the second connecting part. The variable-pitch rocker arm of the present invention is a dual-thrust structure, such that the variable-pitch rocker arm applies symmetrical force on the second slider, extending the service life of the power device.

The invention discloses a permanent magnet polarization hybrid axial magnetic bearing. The permanent magnet polarization hybrid axial magnetic bearing comprises a rotor assembly and a stator assembly, wherein the rotor assembly comprises a rotating shaft and a rotor dual-thrust disc; the stator assembly comprises a stator shell, an upper stator end plate, an upper permanent magnet, a stator center plate, a lower permanent magnet, a lower stator end plate and a stator magnet exciting coil; the upper stator end plate and the lower stator end plate can form an outer upper air gap and an outer lower air gap together with the outer end surface of the rotor dual-thrust disc respectively, and the stator center plate and the inner end surface of the rotor dual-thrust disc can form an inner upper air gap and an inner lower air gap; the upper permanent magnet and the lower permanent magnet can axially magnetized, and magnetizing directions of the upper permanent magnet and the lower permanent magnet are opposite; the inner and outer air gaps can internally generate a permanent magnet polarization magnetic field, a magnetic field generated by the stator magnet exciting coil can regulate the permanent magnet polarization magnetic field. The magnetic bearing provided by the invention has a firm and reliable structure and high energy density, can be applied in a high-speed operation occasion, and is suitable for a high-speed system which has high power and large capacity.

The invention relates to a bearing oil groove machining technology, in particular to a clamp for machining an oil groove, shaped like the Arabic number 8, of the inner spherical face of a joint bearing and a producing and using method of the clamp. The clamp is composed of a mold with an alpha angle face, a clamping hole, a screw hole and a fastening screw rod. The screw hole is located in the surface of the mold. The fastening screw rod is correspondingly screwed into the screw hole. The center line of the mold is perpendicular to the alpha angle face of the mold. An angle alpha is formed between the center line of the mold and the rotation axis of a lathe spindle, and the angle alpha is larger than 0 degree and equal to or smaller than 15 degrees. The clamp is used for clamping the oil groove, shaped like the Arabic number 8, of the inner spherical face of the joint bearing, and therefore an oil groove, shaped like the Arabic number 8, of the inner arc spherical face of a dual-thrust joint bearing can be machined on a common lathe, the bearing can be effectively protected by the copper head fastening screw rod, and when clamped, the bearing can be clamped many times by performing alignment one time; and the using method is easy to operate, and size control is more convenient and accurate.