公开(公告)号：WO1992014160A1

公开(公告)日：1992-08-20

申请号：PCT/US1992000895

申请日：1992-02-04

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  HULSING, Rand, H, II

IPC: G01P15/08

CPC classification number: G01P15/18 ,  F02G1/044 ,  F02G1/0445 ,  F02G2250/18 ,  F02G2253/03 ,  F16F2230/0052 ,  F16F2230/34 ,  F16L37/24 ,  G01C19/5719 ,  G01C19/5747 ,  G01P15/0802 ,  G01P15/097 ,  G01P2015/0828 ,  Y10S73/01

Abstract: A sensor (10) is disclosed for measuring the specific force and angular rotation rate of a moving body and is micromachined from a silicon substrate (16). First and second accelerometers (32a and b) are micromachined from the silicon substrate (16), each having a force sensing axis (38) and producing an output signal of the acceleration of the moving body along its force sensing axis (38). The accelerometers (32a and b) are mounted within the substrate (16) to be moved along a vibration axis (41). The accelerometers (32a and b) are vibrated or dithered to increase the Coriolis component of the output signals from the accelerometers (32a and b). A sinusoidal drive signal of a predetermined frequency is applied to a conductive path (92) disposed on each of the accelerometers. Further, magnetic flux is directed to cross each of the conductive paths (92), whereby the interaction of the magnetic flux and of the drive signal passing therethrough causes the desired dithering motion.

公开(公告)号：WO1992014159A1

公开(公告)日：1992-08-20

申请号：PCT/US1992000918

申请日：1992-02-04

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  HULSING, Rand, H., II

IPC: G01P09/04

CPC classification number: G01P15/18 ,  G01C19/5705 ,  G01P15/097

Abstract: A sensor (10) for measuring angular rate and linear acceleration of the body, in which first and second rotors (30, 31), each carrying a plurality of accelerometers (44, 49), are mounted for counter-rotating dithering motion on opposite sides of a base plate (11). A single permanent magnet (70) is mounted centrally of the base plate, with one pole (71) disposed adjacent the first rotor and the other pole (72) disposed adjacent the second rotor. First and second X-shaped pole pieces (80, 81) are mounted at the respective opposite poles of the magnet, and a plurality of velocity sensing pick-off coils (86) are mounted on the arms (82, 83, 84 and 85) of the pole pieces for cooperation with flux splitting protrusions (34, 35 and 36) on the rotors. The arms of the pole pieces are associated with the flux splitting protrusions so that differential flux splitting is obtained as the rotors are rotated in opposite directions.

公开(公告)号：WO1992010656A1

公开(公告)日：1992-06-25

申请号：PCT/US1991008298

申请日：1991-11-06

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  JEWESS, Gordon, F. ,  VESSA, Phillip, B. ,  KEETLEY, R., G.

IPC: F02C07/28

CPC classification number: F01D11/00 ,  F01D25/145

Abstract: A first annular seal (46) is mounted on the housing (10) and extends into the space (32) between the compressor (26) and the turbine wheel (16). The seal (46) includes a main sealing and support section (54) adjacent the compressor (26) and an insulating section (86) adjacent the turbine wheel (16). The insulating section (86) is mounted on and generally spaced from the main support section (54). A peripheral groove (66) opens axially towards the turbine wheel (16) and is located at a radially outer extremity of the first seal (46). The groove (66) includes a first and second wall, with the first wall (70) located radially inward of the second wall (78). A mounting element (68) is attached to a radially inward side (69) of the first wall (70) to form a gap (75) between the first wall (70) and the mounting element (68). A second annular seal (74) includes an inner and outer edge. The inner edge (73) is sealingly engaged in the gap (75) and the second edge (79) is secured between a turbine side of the second wall (78) and the housing support (10).

公开(公告)号：WO1991013711A1

公开(公告)日：1991-09-19

申请号：PCT/US1990001260

申请日：1990-03-07

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  RIORDAN, Robert, Michael ,  WENTLAND, William, L.

IPC: B22D19/00

CPC classification number: B22D19/08

Abstract: A method of making a bearing composed of a bronze preform (10) having aluminum or aluminum alloy cast thereabout. The method includes the step of placing the bronze preform (10) in a mold (12) so as to be supported at one end (14) thereof. The bronze preform (10) is formed of bronze having lead with a determined melting point and boiling point. The molten aluminum or aluminum alloy as at (16) is at a temperature between the melting point and boiling point of lead in the bronze preform (10) and is fed into the mold (12) under pressure after the bronze preform (10) has been placed therein. The molten aluminum or aluminum alloy as at (16) contacts the bronze preform (10) and produces a molten lead during partial erosion of the surface (18) thereof. In this manner, the molten aluminum or aluminum alloy as at (16) forces the molten lead away from the surface (18) of the bronze preform (10) and is metallurgically bonded without an intervening lead band directly to the bronze preform (10).

公开(公告)号：WO1991009467A1

公开(公告)日：1991-06-27

申请号：PCT/US1990006561

申请日：1990-11-08

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  LATOS, Thomas, S. ,  WINGATE, Kevin, L.

IPC: H03K17/687

CPC classification number: H03K17/567 ,  H03K17/162

Abstract: Previous drives for insulated gate devices had undesirably low noise immunity. This advantage is overcome by a circuit providing improved noise immunity having a first transistor (10) including power terminals and a gate, the power terminals being connected to a power supply and to a load, and the gate being connected to receive control pulses from a pulse source (26) for turning the first transistor (10) on and off. A second transistor (44) has power terminals connected across the gate and one power terminal of the first transistor (10), and a gate connected to a varying voltage circuit (42, 43). This varying voltage circuit (42, 43) provides a voltage on the gate of the second transistor (44) which varies in proportion to the spacing between the control pulses and turns on the second transistor (44) when the spacing is greater than a preset value. The pulse source (26) charges the varying voltage circuit (42, 43) during normal operation and the charge turns off the second transistor (44). During inactivity of the pulse source (26) for a preset time period, the varying voltage circuit (42, 43) changes to the level where the second transistor (44) turns on and shunts the first transistor (10), thereby preventing the first transistor (10) from being turned on by noise signals.

Abstract translation: 用于绝缘栅极器件的先前驱动器具有不期望的低噪声抗扰度。 通过提供改进的抗噪声性的电路克服了这个优点，该电路具有包括电源端子和栅极的第一晶体管（10），电源端子连接到电源和负载，并且栅极被连接以从 用于使第一晶体管（10）接通和断开的脉冲源（26）。 第二晶体管（44）具有连接在第一晶体管（10）的栅极和一个电源端子之间的电源端子，以及连接到变化电压电路（42,43）的栅极。 这个变化的电压电路（42,43）在第二晶体管（44）的栅极上提供一个电压，当第二晶体管（44）的间隔大于预设值时，该电压与第二晶体管（44）之间的间隔成比例地变化， 值。 脉冲源（26）在正常操作期间对变化的电压电路（42,43）充电，并且电荷关断第二晶体管（44）。 在脉冲源（26）处于预置时间段的不活动状态期间，变化电压电路（42,43）变为第二晶体管（44）导通的电平，并分流第一晶体管（10），从而防止第一晶体管 晶体管（10）不被噪声信号导通。

公开(公告)号：WO1991009457A1

公开(公告)日：1991-06-27

申请号：PCT/US1990006559

申请日：1990-11-08

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DHYANCHAND, P., John ,  PATEL, Sunil ,  NG, Chai-Nam ,  NGUYEN, Vietson

IPC: H02M03/335

CPC classification number: H02M7/49

Abstract: A regulator (32) for a stepped-waveform inverter having first and second subinverters (70, 78) which produce waveforms having a variable phase displacement therebetween and a summing transformer (112) which sums the outputs of the subinverters includes circuitry (158) for detecting a deviation of a parameter of the AC output power produced by the inverter from a reference and circuitry (160) coupled to the detecting circuitry for deriving a phase command signal from the detected deviation. A comparator (208) compares the phase command signal with a ramp signal to obtain a comparison signal and circuitry (140, 144) operates the first and second subinverters responsive to the comparison signal to cause the phase displacement to vary in accordance with the phase command signal.

公开(公告)号：WO1990007819A1

公开(公告)日：1990-07-12

申请号：PCT/US1989005541

申请日：1989-12-05

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  RECKER, Bradley, J. ,  ROZMAN, Christopher, J. ,  ROE, Derrick, I.

IPC: H02M05/42

CPC classification number: H02M5/272 ,  H02J3/46 ,  Y10T307/615 ,  Y10T307/625

Abstract: Prior variable speed constant frequency (VSCF) system controls which operate the VSCF system while it is coupled in parallel with an external AC source across a load have controlled inverter output voltage based only upon the reactive current level supplied by the inverter. This has in turn resulted in the possibility of unstable system operation under load. In order to overcome the foregoing problem, a control (30) for controlling the supply of power to a load (27) from an inverter (22) coupled in parallel with an AC power source (28) across the load (27) senses the real and reactive components of the current supplied by the inverter (22) and the phase displacement of the power developed by the AC power source (28) to derive an angular displacement signal. The frequency and phase of the inverter output are controlled in dependence upon the real current component supplied by the inverter (22) and the angular displacement signal while the magnitude of the inverter output is controlled in dependence upon the real and reactive current components. The present control is capable of operating VSCF inverter in a stable fashion under load.

公开(公告)号：WO1990005406A1

公开(公告)日：1990-05-17

申请号：PCT/US1989004474

申请日：1989-10-10

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  KRINICKAS, Alexander, Jr.

IPC: H02M07/00

CPC classification number: H01F27/303 ,  H01F30/12 ,  H02M5/42

Abstract: A variable speed, constant frequency generating system has a neutral forming autotransformer (22) connected between a variable speed generator (21) and an AC to AC converter (24, 28). The converter includes a three phase, full wave rectifier (24) with positive and negative rails (26, 27) connecting the rectifier with a DC to AC inverter (28). Each turn of the transformer windings (46, 48, 49) has at least one surface exposed to air for cooling.

公开(公告)号：WO1990002256A1

公开(公告)日：1990-03-08

申请号：PCT/US1989003218

申请日：1989-07-26

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  SAWYER, Ken, W. ,  VERSHURE, Roy, W., Jr.

IPC: F02C07/042

CPC classification number: F02C9/20 ,  F01D17/16 ,  F04D27/0246 ,  F04D29/4213 ,  F04D29/462 ,  F05D2250/51

Abstract: A guide vane assembly (22) for controllably varying fluid mass flow rates past compressor blades (14) in an auxiliary power unit. The auxiliary power unit comprises a rotary apparatus (10) for compressing fluid in a compressor housing (12) wherein a plurality of compressor blades (14) are mounted on a rotating hub (16). A fluid flow path extends through the housing (12) which has a duct portion (18) extending upstream of the compressor blades (14) to an inlet plenum (20) to define at least a portion of the fluid flow path. The guide vane assembly (22) includes a central gear box (24) adjacent the compressor housing (12) which has a ring gear (26) mounted for limited rotational movement. A plurality of guide vanes (28) are disposed in the duct portion (18) of the housing (12) and are mounted for pivotal movement responsive to rotational movement of the ring gear (26). The guide vane assembly (22) is adapted to convert rotation of the ring gear (26) to pivotal movement of the guide vanes (28).

公开(公告)号：WO1990001624A1

公开(公告)日：1990-02-22

申请号：PCT/US1989003227

申请日：1989-07-26

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  ROGERS, Colin ,  GEISER, Robert, J.

IPC: F02C03/10

CPC classification number: F02C3/10 ,  F02C3/36 ,  F02C7/143

Abstract: High pressure ratios in a Brayton cycle gas turbine engine are achieved in a construction utilizing a low pressure spool (10), an intermediate pressure spool (12) and a high pressure spool (14). Intercoolers (30 and 32) are located between the stages defined by the spools (10, 12 and 14) to densify the air compressed by a low pressure compressor (18) and an intermediate compressor (34) associated with the spools (10 and 12) respectively.

Abstract translation: 在利用低压阀芯（10），中间压力阀芯（12）和高压阀芯（14）的结构中实现了布雷顿循环燃气涡轮发动机中的高压比。 中间冷却器（30和32）位于由阀芯（10,12和14）限定的级之间，用于致密化由低压压缩机（18）压缩的空气和与阀芯（10和12）相关联的中间压缩机（34） ） 分别。