Robert Christian Ackerman

US Patent:

6439837, Aug 27, 2002

Filed:

Jun 27, 2000

Appl. No.:

09/604127

Inventors:

John Peter Heyward - Loveland OH
Robert Ingram Ackerman - West Chester OH
Richard Hartley Pugh - Maineville OH
Steven Curtiss Warfield - Mason OH
Kenneth Morand Lieland - Cincinnati OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

F04D 2938

US Classification:

415115, 416 97 R

Abstract:

A nozzle vane includes a row of trailing edge apertures and cooperating inboard slots joined in flow communication with a mid-chord cavity. An outboard slot is spaced outwardly from a respective last one of the inboard slots, and outboard of a respective last one of the trailing edge apertures. The outboard slot extends behind a braze joint between the vane and a supporting band and is effective for backside cooling thereof.

US Patent:

6464457, Oct 15, 2002

Filed:

Jun 21, 2001

Appl. No.:

09/886820

Inventors:

Clive A. Morgan - Cincinnati OH
Todd S. Heffron - Indian Springs OH
Eric J. Wienholts - Wyoming OH
Robert I. Ackerman - West Chester OH
John P. Heyward - Loveland OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

F01D 1100

US Classification:

4151742, 415135, 415139, 277630, 277637, 277644

Abstract:

A gas turbine engine arcuate segment has an arcuate band segment, at least one tab and an arcuate rail segment spaced axially apart from the tab and located along an axial end of the band segment. The tab and the arcuate rail segment extend radially away from the band segment and a space is located between the tab and the rail segment. A tab aperture extends entirely through the tab. The rail segment has a rail aperture entirely therethrough. A leaf seal and a spring are disposed within the space to bias the leaf seal against the aft rail. In an exemplary embodiment, a spring aperture extends entirely through the spring, a seal aperture extends entirely through the leaf seal, and a headless pin is disposed in the apertures such that the leaf seal and the spring are radially restrained by the pin.

US Patent:

6579061, Jun 17, 2003

Filed:

Jul 27, 2001

Appl. No.:

09/916352

Inventors:

John Peter Heyward - Loveland OH
Robert Ingram Ackerman - West Chester OH
Gregory Alan White - Cincinnati OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

F01D 904

US Classification:

415189, 4152092, 4152094, 2988922

Abstract:

A turbine nozzle includes segments of outer and inner bands supporting corresponding vane pairs. The bands adjoin each other at corresponding ends along splitlines, with each band having a forward land, an opposite aft land, and a middle land extending therebetween. The forward lands have a nominal aft-facing step, the aft lands have a nominal forward-facing step and the middle lands are nominally flush.

US Patent:

6592330, Jul 15, 2003

Filed:

Aug 30, 2001

Appl. No.:

09/943528

Inventors:

Leslie Eugene Leeke - Burlington KY
Sean Robert Keith - Fairfield OH
Ronald Eugene Mc Rae, Jr. - Wyoming OH
Robert Ingram Ackerman - West Chester OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

F03B 314

US Classification:

416219R, 2988921

Abstract:

A dovetail assembly including non-parallel relief faces that facilitates reduced pressure face brinelling in turbine engines. The assembly includes a plurality of rotor blades, each including a dovetail. Each dovetail includes at least a pair of blade tangs including blade relief faces. The dovetail assembly also includes a rotor disk including a plurality of dovetail slots, each sized to receive a dovetail. Each dovetail slot is defined by at least one pair of opposing disk tangs including disk relief faces. The disk relief faces are non-parallel to the blade relief faces when the dovetail is mounted in the dovetail slot.

US Patent:

8544173, Oct 1, 2013

Filed:

Aug 30, 2010

Appl. No.:

12/871084

Inventors:

Matthew Nicklus Miller - Maineville OH, US
David Edwin Budinger - Loveland OH, US
Marek M. Steplewski - Mission TX, US
Wayne Ray Grady - Hamilton OH, US
Robert Ingram Ackerman - West Chester OH, US
Cary Michael Kinder - Franklin OH, US
Ian Craig Linscott - Hamilton OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B23P 6/00

US Classification:

298891, 29888021, 4152093

Abstract:

A turbine nozzle may be repaired by severing the inner band from the vanes and outer band, which may then be discarded. A replacement nozzle is cast to include replacement vanes extending between a replacement outer band and an inner web, with the replacement outer band and vanes conforming with the original outer band and vanes. The new web is configured differently than the old inner band and includes a tie bar. The inner band is machined to form vane seats. The web is machined to form plinths atop the tie bar at each of the replacement vanes. The plinths and tie bar are assembled through the vane seats and bonded to the machined inner band to collectively form the repaired turbine nozzle.

US Patent:

52115364, May 18, 1993

Filed:

May 13, 1991

Appl. No.:

7/699060

Inventors:

Robert I. Ackerman - Mason OH
Alan Walker - Wyoming OH
Ronald E. Schlechtweg - Loveland OH

Assignee:

General Electric Company - Cincinnati OH

International Classification:

F01D 2508

US Classification:

415177

Abstract:

The invention comprises the use of a split retaining ring cooperating with an inner nozzle support member to retain nozzle segments and a stationary seal without the use of threaded fasteners. Elimination of bolt heads from the rotor/stator cavity reduces windage losses and enables a shortening of the inner nozzle band overhang, reducing the requirement for high pressure cooling and cavity purge air.

US Patent:

55846513, Dec 17, 1996

Filed:

Oct 31, 1994

Appl. No.:

8/331401

Inventors:

Edward F. Pietraszkiewicz - Maineville OH
David A. Frey - West Chester OH
Robert I. Ackerman - West Chester OH
Carl D. Wright - Clarksville OH

Assignee:

General Electric Company - Cincinnati OH

International Classification:

F01D 1108
F01D 2512

US Classification:

415115

Abstract:

A shroud includes a panel having leading and trailing edges and inner and outer surfaces extending therebetween. A cooling passage extends through the panel from adjacent the leading edge to an intermediate location and is generally parallel to the inner and outer surfaces. The cooling passage has an inlet for receiving cooling air from adjacent the panel outer surface, a plurality of spaced apart turbulators disposed adjacent to the panel inner surface, and an outlet disposed at the leading edge for discharging the cooling air from the passage.