Clark L Applegate

US Patent:

8282336, Oct 9, 2012

Filed:

Dec 28, 2007

Appl. No.:

11/966416

Inventors:

Aspi Rustom Wadia - Loveland OH, US
Seyed Gholamali Saddoughi - Clifton Park NY, US
Clark Leonard Applegate - West Chester OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F01D 17/20

US Classification:

415 1, 415914

Abstract:

An instability mitigation system is disclosed, comprising a detection system for detecting an onset of an instability in a rotor during the operation of the rotor, a mitigation system that facilitates the improvement of the stability of the rotor when the onset of instability is detected by the detection system, a control system for controlling the detection system and the mitigation system.

US Patent:

8282337, Oct 9, 2012

Filed:

Dec 28, 2007

Appl. No.:

11/966532

Inventors:

Aspi Rustom Wadia - Loveland OH, US
Seyed Gholamali Saddoughi - Clifton Park NY, US
Clark Leonard Applegate - West Chester OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F01D 17/20

US Classification:

415 1, 415914

Abstract:

An instability mitigation system is disclosed, comprising a stator stage located axially proximate to a rotor, the stator stage having a row of a plurality of stator vanes arranged around a centerline axis, and a mitigation system comprising at least one plasma actuator mounted on the stator vane that facilitates the improvement of the stability of the rotor, and a control system for controlling the operation of the mitigation system. An instability mitigation system further comprising a detection system for detecting an onset of an instability in a rotor and a control system for controlling the detection system and the mitigation system are disclosed.

US Patent:

8348592, Jan 8, 2013

Filed:

Dec 28, 2007

Appl. No.:

11/966473

Inventors:

Aspi Rustom Wadia - Loveland OH, US
Seyed Gholamali Saddoughi - Clifton Park NY, US
Clark Leonard Applegate - West Chester OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F01D 17/20

US Classification:

415 1, 415914

Abstract:

An instability mitigation system is disclosed, comprising a rotor having a row of blades arranged around a centerline axis, and a mitigation system comprising at least one plasma actuator mounted on a blade that facilitates the improvement of the stability of the rotor, and a control system for controlling the operation of the mitigation system. An instability mitigation system further comprising a detection system for detecting an onset of an instability in a rotor and a control system for controlling the detection system and the mitigation system are disclosed.

US Patent:

20090169356, Jul 2, 2009

Filed:

Dec 28, 2007

Appl. No.:

11/966384

Inventors:

Aspi Rustom Wadia - Loveland OH, US
Seyed Gholamali Saddoughi - Clifton Park NY, US
Clark Leonard Applegate - West Chester OH, US

International Classification:

F02C 9/00
F04D 27/00
F01D 5/02

US Classification:

415 26, 415118, 415129

Abstract:

A compression system is disclosed, the compression system comprising a rotor having a circumferential row of blades each blade having a blade tip, a static component located radially outwardly and apart from the blade tips, a detection system for detecting an instability in the rotor during the operation of the rotor, and a mitigation system that facilitates the improvement of the stability of the rotor when an instability is detected by the detection system. A gas turbine engine comprising a detection system for detecting an instability during the operation of the fan section and a mitigation system that facilitates the improvement of the stability of the fan section is disclosed.

US Patent:

20090169363, Jul 2, 2009

Filed:

Dec 28, 2007

Appl. No.:

11/966503

Inventors:

Aspi Rustom Wadia - Loveland OH, US
Seyed Gholamali Saddoughi - Clifton Park NY, US
Clark Leonard Applegate - West Chester OH, US

International Classification:

F01B 25/16
F02C 7/00
F02C 9/16

US Classification:

415118, 415176

Abstract:

A compression system is disclosed, the compression system comprising a stator stage having a row of a plurality of stator vanes arranged around a centerline axis, each stator vane having a vane airfoil and at least one plasma actuator located on the stator stage. Exemplary embodiments of a detection system for detecting an instability in a compression system rotor and a mitigation system that facilitates the improvement of the stability of the rotor are disclosed.

US Patent:

20100047055, Feb 25, 2010

Filed:

Dec 28, 2007

Appl. No.:

11/966445

Inventors:

Aspi Rustom Wadia - Loveland OH, US
Seyed Gholamali Saddoughi - Clifton Park NY, US
Clark Leonard Applegate - West Chester OH, US

International Classification:

F02C 9/16
F01D 17/00
F01D 7/00

US Classification:

415 13, 415148, 415129

Abstract:

A compression system is disclosed, the compression system comprising a rotor having a plurality of blades arranged around a centerline axis, each blade having a blade airfoil and a blade tip, and at least one plasma actuator located on a blade. Exemplary embodiments of a detection system for detecting an instability in a compression system rotor and a mitigation system comprising at least one plasma actuator mounted on a blade to facilitate the improvement of the stability of the rotor are disclosed.

US Patent:

20100284785, Nov 11, 2010

Filed:

Dec 28, 2007

Appl. No.:

11/966242

Inventors:

Aspi Rustom Wadia - Loveland OH, US
Seyed Gholamali Saddoughi - Clifton Park NY, US
Clark Leonard Applegate - West Chester OH, US

International Classification:

F04D 29/00

US Classification:

415118

Abstract:

A system for detecting onset of a stall in a rotor is disclosed, the system comprising a sensor located on a static component spaced radially outwardly and apart from tips of a row of blades arranged circumferentially on the rotor wherein the sensor is capable of generating an input signal corresponding to a flow parameter at a location near the tip of a blade, a control system capable of generating a rotor speed signal, and a correlation processor capable of receiving the input signal and the rotor speed signal wherein the correlation processor generates a stability correlation signal.

US Patent:

44517696, May 29, 1984

Filed:

Dec 7, 1981

Appl. No.:

6/328058

Inventors:

George E. Minnich - Vestal NY
Clark L. Applegate - Binghamton NY

Assignee:

The Singer Company - Binghamton NY

International Classification:

G05D 1700

US Classification:

318689

Abstract:

Electronic compensation apparatus for modifying an input control signal, to produce a drive signal for a torque motor of an electrohydraulic servovalve. The torque motor has a frequency variable response characteristic. The apparatus includes means to determine a first voltage magnitude across the armature of the torque motor when it is not moving; means to determine a second voltage magnitude across the armature of the torque motor when it is moving; and means to determine a difference voltage of the first and second voltages. The difference voltage measures the dynamic motion of the armature and provides a feedback control signal. The apparatus further includes compensation means responsive to the feedback control signal for compensating the electrohydraulic servovalve so as to avoid resonance, and feedback means connected to the compensation means for providing a modified control signal.