Richard John Hoppe

US Patent:

7105937, Sep 12, 2006

Filed:

Jul 14, 2004

Appl. No.:

10/891370

Inventors:

Richard J. Hoppe - Roscoe IL, US
Scott M. Thomson - Rockford IL, US
Douglas J. Turner - Rockford IL, US

Assignee:

Hamilton Sundstrand Corporation - Windsor Locks CT

International Classification:

F02N 11/04
H02K 23/60
F16H 48/22
F16H 48/26

US Classification:

290 38R, 475 88

Abstract:

A starter/generator system for a gas turbine engine used in aeronautical applications that couples a single dynamoelectric machine to the gas turbine engine through a torque converter in a starting mode, and then disengages the torque converter and engages the engine to the dynamoelectric machine through an adjustable speed transmission in a generating mode after the engine reaches self-sustaining speed, wherein the speed of the adjustable speed transmission is set to match the frequency of AC generated by the dynamoelectric machine with on-board electrical equipment requirements to suit flight conditions.

US Patent:

7116003, Oct 3, 2006

Filed:

Jul 14, 2004

Appl. No.:

10/890740

Inventors:

Richard J. Hoppe - Roscoe IL, US

Assignee:

Hamilton Sundstrand Corporation - Windsor Locks CT

International Classification:

F02B 63/04
H02K 7/18
H02P 3/00
H02P 9/06
H02P 15/00

US Classification:

290 1A, 322 10

Abstract:

A starter/generator electrical system for gas turbine powered aircraft with mixed power architecture to combine advantages of each. The mixed power architecture may be selected from constant frequency (CF), adjustable variable frequency (AVF) and narrow range variable frequency (NRVF) alternating current (AC) systems to suit aircraft requirements for on-board electric components and redundancy, with at least two separate power generation systems provided for each gas turbine engine on the aircraft.

US Patent:

20130247539, Sep 26, 2013

Filed:

Mar 26, 2012

Appl. No.:

13/429703

Inventors:

Richard John Hoppe - Madison WI, US

International Classification:

F02C 6/00

US Classification:

60 3915

Abstract:

A gas turbine engine power generation system includes first and second spools respectively connected to first and second turbine sections. First and second shafts respectively are coupled to the first and second spools. First and second generators respectively are configured to provide first and second electrical powers. A generator gearbox operatively connects the first and second shafts respectively to the first and second generators. An electrical summing device is electrically connected to the first and second generators and is configured to receive the first and second electrical powers and combine the first and second electrical powers to produce a common output power.

US Patent:

53651081, Nov 15, 1994

Filed:

Nov 19, 1992

Appl. No.:

7/979088

Inventors:

W. Kyle Anderson - Rockford IL
Richard J. Hoppe - Rockford IL
William J. Durako - Rockford IL
Mark Metzler - Davis IL
Lawrence Hughes - Rockford IL
Stephen E. Jackson - Rockford IL

Assignee:

Sundstrand Corporation - Rockford IL

International Classification:

H01L 2302
H01L 2312

US Classification:

257678

Abstract:

A power semiconductor assembly, particularly a semiconductor switch assembly which has a number of discrete emitter connection pads, comprised of a metal matrix composite housing and a copper or aluminum post with a cross-sectional area sufficiently large to carry the rated current providing a single-point, external connection to all emitter pads. The post passes through and is supported by an insulating ceramic insert such as aluminum oxide in the wall of the metal matrix composite housing. The post is hollowed out in the region where it passes through the ceramic insert in order to reduce the mechanical stress between the post and the insulating insert as a result of the mismatch in their thermal expansion coefficients. Buses on either side of the semiconductor die provide surfaces for connection from the post to the discrete emitter connection pads on the die.

US Patent:

49566261, Sep 11, 1990

Filed:

Jan 13, 1989

Appl. No.:

7/296830

Inventors:

Richard J. Hoppe - Rockford IL
Mark W. Metzler - Davis IL

Assignee:

Sundstrand Corporation - Rockford IL

International Classification:

H01F 2710

US Classification:

336 60

Abstract:

Plate fin heat exchangers (11,12 or 34,35,36) for transformers (10) and inductors (30) made of laminated iron cores (16 and 44) and insulated wire coils (13,14,15 or 45, 46, 47, 48) placed around the legs of the cores (16 and 44) is provided in the form of a plate fin between the coils of wire. The wire coils (13,14,15 or 45,46,47,48) and respective heat exchangers (11,12 or 34,35,36) are sandwiched together with the leg of the iron core (16 or 44) passing through the sandwich. The heat generated in the coils is in direct contact with the surface of the heat exchangers (11,12 or 34,35,36). A narrow air gap (28 or 49) is incorporated in each of the plate fin heat exchangers (11,12 or 34,35,36) at the core leg of each coil (13,14,15 or 45,46,47,48) to reduce the path eddy currents can travel and thereby reduce eddy current losses which reduce the power of the transformer (10) or inductor (30).

US Patent:

49758241, Dec 4, 1990

Filed:

Dec 11, 1989

Appl. No.:

7/448313

Inventors:

John Huss - Rockford IL
Richard J. Hoppe - Rockford IL
Lawrence E. Crowe - Lindenwood IL
Thomas Sutrina - Rockford IL
Eric D. Lakin - Rockford IL

Assignee:

Sundstrand Corporation - Rockford IL

International Classification:

H01M 100

US Classification:

363132

Abstract:

Prior power converters have utilized discrete components mounted on circuit boards of different design. Failure of one or more of the components requires the components to be separately tested to determine which is faulty. The faulty component or the board containing same must then be replaced. This results in significant down time for the inverter and can require stocking of a large number of specialized boards. In order to overcome these problems, an inverter is assembled using a series of circuit boards of standardized type. Each circuit board includes separate layers which interconnect components mounted thereon together with a heat exchanger which cools high power components. When a malfunction of a component occurs, the entire board may be replaced so that inverter down time is minimized. Also, the use of standardized boards reduces stocking requirements and inventory costs.

US Patent:

45816956, Apr 8, 1986

Filed:

Dec 12, 1984

Appl. No.:

6/682271

Inventors:

Richard J. Hoppe - Rockford IL

Assignee:

Sundstrand Corporation - Rockford IL

International Classification:

H02M 100
H02K 1100

US Classification:

363145

Abstract:

Resistance to centrifugally acting forces in an axially and radially compact rectifier assembly particularly suited for mounting in a rotary component of a dynamoelectric machine is achieved in a full wave, three phase rectifier assembly. The assembly includes first and second blocks 18, 20, each having three radially outwardly facing diode receiving surfaces 22, 24, 26. Six diode wafers 28 are located on the surfaces and are sandwiched thereagainst by six electrically conductive load shoes 40. Three phase conductors 54 are interposed between the load shoes 40 and a shrink fitted cylindrical housing 10 and electrically connect aligned load shoes 40 associated with each of the blocks 18 and 20.

US Patent:

49281380, May 22, 1990

Filed:

Jun 30, 1989

Appl. No.:

7/374136

Inventors:

Derek N. Walton - Roscoe IL
Richard J. Hoppe - Rockford IL

Assignee:

Sundstrand Corporation - Rockford IL

International Classification:

H02M 112

US Classification:

363 40

Abstract:

A power supply in accordance with the present invention includes a chassis (26) associated with the power supply; a voltage source (12) providing an output voltage varying at a fundamental frequency and having a noise component changing as a function of time at a frequency above the fundamental frequency; a filter (41) including an inductance (44) in series with the voltage source for attenuating the noise component and outputting the fundamental frequency; and a cooling apparatus (42) thermally and capacitively coupled to the inductor for conducting heat from the inductor and shunting the noise component to the chassis.