公开(公告)号：WO1991007592A1

公开(公告)日：1991-05-30

申请号：PCT/US1990005712

申请日：1990-10-04

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  KASSEL, John, M.

IPC: F04C19/00

CPC classification number: F04D9/02 ,  F04C19/00 ,  F04C2210/1044 ,  F04D5/003 ,  F04D5/007

Abstract: The problem of space and weight limitations for liquid ring pumps and regenerative pumps in aerospace applications is solved by a pump having a housing defining a first chamber (22) and a second chamber (24) independent of the first chamber. An impeller (10) is rotatably mounted in the housing and includes impeller blades (16) successively movable through the first chamber for cooperation therewith to provide a liquid ring portion of the pump, and through the second chamber for cooperation therewith to provide a regenerative portion of the pump. An inlet admits fluid to the first chamber. A first outlet from the first chamber feeds the fluid to an inlet of the second chamber for pressurization therein. An outlet from the second chamber feeds the pressurized fluid for appropriate use, such as in a fuel pump system. A dual pump configuration also is contemplated with a pair of first chambers (22, 22a) and liquid ring portions of the pump, and a pair of second chambers (24, 24a) and regenerative portions of the pump. The fluid in the dual ring pump portions is fed to one of the liquid compressor portions and then to the other regenerative pump portion for doubling the effectiveness of the pump. All of this is accomplished by a unitary housing and a single impeller.

公开(公告)号：WO1991006778A1

公开(公告)日：1991-05-16

申请号：PCT/US1990005705

申请日：1990-10-04

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DUSSOURD, Jules, L.

IPC: F04D05/00

CPC classification number: F04D9/02 ,  F04C19/00 ,  F04D5/002 ,  F04D29/188

Abstract: A regenerative pump (1) and method of discharging pressurized fluid therefrom wherein direct flow of pressurized fluid from side channels (10, 11) of the pump into discharge ports (16, 17) of the pump is blocked by walls (18, 19) of the pump casing (2) thereby requiring the pressurized fluid to flow into the space between the blades (4) of the impeller of the pump and radially inward to the discharge ports to provide a more ordered flow at the discharge port while improving the self-priming capability of the pump. The cross-sectional area of each of the side channels (10, 11) is progressively reduced in the vicinity of the discharge ports by tapering inwardly the radially outer walls (26, 27) of the casing defining the side channels for facilitating movement of the pressurized fluid into the impeller and to the discharge ports in a controlled manner. The discharge ports are each shaped such that its radially outer edge (23) is progressively more radially outward in a direction from the upstream end (25) of the discharge port to the downstream end (24) thereof for optimizing the gas pumpiping ability, with a minimum loss of liquid for improved performance of the pump as both a liquid ring pump for gas and as a side channel pump for liquid.

Abstract translation: 一种再生泵（1）和从其中排出加压流体的方法，其中加压流体从泵的侧通道（10,11）直接流入泵的排放端口（16,17）被壁（18,19）阻挡， （2），从而要求加压流体流入泵的叶轮（4）的叶片（4）之间的空间并且径向向内流到排出口，以在排出口处提供更有序的流动同时改善自身 泵的起动能力。 每个侧通道（10,11）的横截面面积在排出口附近通过向内锥形地限定限定侧通道的壳体的径向外壁（26,27）逐渐减小，以便于 加压流体以受控的方式进入叶轮和排出口。 排出口各自的形状使得其径向外边缘（23）在从排出口的上游端（25）到其下游端（24）的方向上逐渐更径向向外，以优化气体泵浦能力，与 液体的最小损失，用于改善泵的性能，作为用于气体的液体环泵和液体的侧通道泵。

公开(公告)号：WO1991001582A1

公开(公告)日：1991-02-07

申请号：PCT/US1990003197

申请日：1990-06-05

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  CARTLIDGE, Norman ,  ANDRADE, Luiz ,  THOM, James, B.

IPC: H02H07/06

CPC classification number: H02H7/062 ,  H02J3/40 ,  Y10T307/735 ,  Y10T307/852

Abstract: A protection system (80) for a first generator unit (12) connectible by a first switch (24) to a power generating system having at least one additional generator unit with the at least one additional generator unit being connectible in parallel to the first generator unit with the first switch being opened in response to a first control signal to enable the first generator unit to be disconnected from the parallel connection to the at least one additional generator unit in accordance with the invention includes a signal generator (12) for generating a reference signal having a frequency proportional to a frequency of a voltage generated by the first generator unit; a sensor (14) for sensing a common frequency at a point of reference of voltage generated by the generator units of the power generating system; and a controller (14), responsive to the signal generator and the sensor, for calculating a difference between the frequency of the reference signal and the common frequency and for generating the first control signal in response to the difference being greater than a threshold.

公开(公告)号：WO1991001052A1

公开(公告)日：1991-01-24

申请号：PCT/US1990003198

申请日：1990-06-05

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DAVIS, Randall, D.

IPC: H01R13/58

CPC classification number: H01R13/58

Abstract: The problem of preventing breakage of the terminating connections of electrical wires (32) is solved by a strain relief device (12) adapted for use with an electrical connector (10) for terminating a multi-wire electrical cable (18). The strain relief device includes a pair of shell members (34) adapted for assembly to a terminating end of the electrical connector and for embracing the electrical cable. A first groove (36) is formed about the outside of the shell members when in assembly. A locking ring (38) is positionable in the first groove to hold the shell members in assembly on the electrical connector. A second groove (40) is formed on the inside of the assembled shell members. A clamping ring (42) is positionable in the second groove for clamping about the electrical cable when the shell members are held in assembly by the locking ring. A third groove (46) is formed on the inside of the assembled shell members for receiving an outwardly projecting flange (48) at the terminating end of the electrical connector to position the shell members in assembly on the connector. The connector and the shell members combine to define a fourth groove (49) on the outside of the assembly for receiving a sealing O-ring (26) for positioning within an opening (14) in an appropriate housing (16).

公开(公告)号：WO1990008427A1

公开(公告)日：1990-07-26

申请号：PCT/US1989005242

申请日：1989-11-16

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  SHEKHAWAT, Sampat, S. ,  DHYANCHAND, P., John

IPC: H03K17/04

CPC classification number: H03K17/04126 ,  H03K17/615

Abstract: Prior base drive circuits for Darlington-connected transistors have accomplished a significant increase in the rate at which such transistors can be turned off and on. However, such circuits have utilized relatively numerous circuit elements or components to accomplish this result. In order to overcome this problem, a drive circuit (26) for rapidly switching driver (Q4) and driven (Q5) transistors connected in a Darlington configuration includes a first controllable switch (Q1) coupled to a control electrode of the driver transistor (Q4), an inductor (Q1) coupled to the first controllable switch and the control electrode of the driver transistor (Q4) and a second controllable switch (Q2) coupled to the control electrode of at least one of the transistors. A driving stage (32) is coupled to the controllable switches (Q1, Q2) and closes same at the beginning of a turn on sequence to establish current flow through the inductor (L1). The driving stage (32) subsequently opens the second controllable switch (Q2) while maintaining the first switch (Q1) closed so that the current flow through the inductor (L1) is provided to the driver transistor (Q4) to turn on same. The drive circuit (26) utilizes fewer circuit components than prior drive circuits.

公开(公告)号：WO1990006611A1

公开(公告)日：1990-06-14

申请号：PCT/US1989004442

申请日：1989-10-10

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  SHEKHAWAT, Sampat, S. ,  DHYANCHAND, John, D.

IPC: H02H07/122

CPC classification number: H03K17/615 ,  H02M1/08 ,  H03K17/04213 ,  H03K17/0424 ,  H03K17/666

Abstract: A proportional base drive (100, 200, 300 and 400) for at least one bipolar transistor (102) having a controlled conductivity which is proportional to current flowing in a load coupled to the switch in accordance with the invention includes a current transformer (112) having a primary winding (114) coupled to an output of the bipolar transistor switch and at least one secondary winding (116); a positive feedback circuit (110) coupled between an emitter of the bipolar transistor switch and the base of the bipolar transistor switch for applying positive feedback from the emitter to the base; a feedback switch (122) disposed in the positive feedback circuit for controlling the flow of current in the positive feedback circuit with the feedback switch having conductive and non-conductive states; a rectifier (120), disposed in the positive feedback circuit, for permitting current to flow to the base of the bipolar transistor switch from the emitter of the bipolar transistor switch when the bipolar transistor switch is conductive and blocking flow of current from the base to the emitter; a first secondary winding of the current transformer being disposed in the feedback circuit for causing a positive feedback to be applied to the base of the bipolar transistor switch when the bipolar transistor switch is conductive; and a base drive control circuit (106) for producing at least one control signal coupled to the base of the bipolar transistor switch and to a control electrode of the feedback switch with the at least one control signal controlling the conductivity of the feedback switch and the bipolar transistor switch.

Abstract translation: 对于根据本发明的具有与耦合到开关的负载中流动的电流成比例的受控电导率的至少一个双极晶体管（102）的比例基极驱动器（100,200,300和400）包括电流互感器 ）具有耦合到双极晶体管开关和至少一个次级绕组（116）的输出的初级绕组（114）; 耦合在双极晶体管开关的发射极和双极晶体管开关的基极之间的正反馈电路（110），用于从发射极向基极施加正反馈; 设置在正反馈电路中的反馈开关（122），用于通过具有导电和非导通状态的反馈开关来控制正反馈电路中的电流流动; 设置在正反馈电路中的整流器（120），用于当双极晶体管开关导通并阻止电流从基极流到电流时，允许电流从双极晶体管开关的发射极流到双极晶体管开关的基极 发射器 电流互感器的第一次级绕组设置在反馈电路中，用于当双极晶体管开关导通时使正反馈施加到双极晶体管开关的基极; 以及用于产生耦合到双极晶体管开关的基极的至少一个控制信号和反馈开关的控制电极的基极驱动控制电路（106），所述至少一个控制信号控制反馈开关的导电性和 双极晶体管开关。

公开(公告)号：WO1990005959A1

公开(公告)日：1990-05-31

申请号：PCT/US1989004436

申请日：1989-10-10

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  LAWRENCE, Trevor ,  CONN, William, H. ,  DENACI, Edward, N.

IPC: G06F15/74

CPC classification number: G05B23/0264 ,  F05B2220/50

Abstract: A turbine engine monitoring system is provided which disposes a data storage device (40) in permanent association with an engine being monitored. The data storage device (40) comprises an electrically erasable programmable read-only memory (120) which is contained in an enclosure (80, 110) and permanently attached to the engine. A connection link (122) is provided to connect the memory device (40) in signal communication with an external device, such as an engine control unit (44). The engine control unit (44) is connected in signal communication with a plurality of transducers (30, 32) that enable the engine control unit (44) to monitor the operational status of a plurality of parameters relating to the turbine engine. By permanently attaching the data storage device (40) to the turbine engine, a lifetime information of the turbine engine can be maintained in permanent association with the turbine engine regardless of replacement of the turbine engine or its related engine control unit (44).

公开(公告)号：WO1990005856A1

公开(公告)日：1990-05-31

申请号：PCT/US1989004437

申请日：1989-10-10

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  SHERVINGTON, Roger, M.

IPC: F16C33/64

CPC classification number: F16C35/04 ,  F16C19/525 ,  F16C35/077 ,  Y10T403/213

Abstract: A temperature compensated shaft bearing support assembly in a magnesium alloy housing (10) wall includes a liner (30) made of a material which has a coefficient of thermal expansion between the coefficients of thermal expansion for the magnesium alloy and for the steel bearing (14, 16). A support spigot (18) has two hubs (17, 36), one for supporting the shaft bearing (16) and the other for supporting the liner (30) that in turn is supported by the housing wall (10).

公开(公告)号：WO1990005412A1

公开(公告)日：1990-05-17

申请号：PCT/US1989004445

申请日：1989-10-10

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  SHEKHAWAT, Sampat, S. ,  DHYANCHAND, John, J.

IPC: H03K17/04

CPC classification number: H03K17/04213 ,  H03K17/615 ,  H03K2217/0036

Abstract: A Darlington connected switching circuit (20) having a bipolar driver transistor (22) and at least one driven transistor (24) having a rapid and reliable turn-off characteristic with low losses suitable for use in power applications such as inverters. The collector to emitter potential of the at least one driven transistor is sensed by a comparator (26) to produce an output signal for controlling the conduction of minority carriers from the base of the driven transistor in response to sensing that the emitter to collector potential has become greater in magnitude than a reference potential (Vref) applied to the comparator. The reference potential is chosen to be at least a function of the switching characteristic of the driven transistor. Appropriate selection of the reference potential applied to the comparator insures that the driver transistor is sufficiently turned off to prevent false turn-offs under light load conditions while additionally ensuring that the at least one driven transistor is rapidly turned off after the driver transistor has been turned sufficiently off to prevent possible false turn-offs.

公开(公告)号：WO1990005402A1

公开(公告)日：1990-05-17

申请号：PCT/US1989004285

申请日：1989-09-29

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  HENDERSON, Eric, A.

IPC: H02J01/10

CPC classification number: H02J3/44 ,  Y10T307/724 ,  Y10T307/735

Abstract: A power generation system (40), (120) is disclosed in which the phase and frequency of alternating current generated by one or more generators (14) is locked to the phase of alternating current generated by a master generator (12) or to an external power source (124). A master control unit (42), (122) contains a master count generator (52) which generates a synchronization count which is transmitted to each generator control unit (44). The synchronization count at any point in time of the master count generator is directly proportional to the phase of electrical current being generated by the master generator or the external power source. Each generator control unit (44) receives the synchronization count and compares the synchronization count with a locally generated synchronization count which is proportional to the phase of electrical current being generated by a generator controlled by the generator control unit receiving the synchronization count. The phase of the alternating current generated by the generators controlled by the each generator control unit receiving the synchronization count is adjusted as a function of the difference of the received and locally generated synchronization count to lock the phase and frequency of the alternating current with the phase and frequency of alternating current generated by the master generator or the phase and frequency of the external power source.