Donald G Bahr

Author:

Donald M. Bahr

ISBN #:

0816503036

Author:

Donald M. Bahr

ISBN #:

0816517746

Author:

Donald M. Bahr

ISBN #:

0816520801

Author:

Donald Bahr

ISBN #:

0520084683

Author:

Donald Bahr

ISBN #:

0520084675

US Patent:

41094590, Aug 29, 1978

Filed:

Feb 21, 1975

Appl. No.:

5/551545

Inventors:

Edward E. Ekstedt - Cincinnati OH
Edwin J. Beck - Cincinnati OH
Donald W. Bahr - Cincinnati OH
Barry Weinstein - Georgetown MA

Assignee:

General Electric Company - Cincinnati OH

International Classification:

F02C 718

US Classification:

60 3966

Abstract:

A combustor for use in a gas turbine engine is provided with a first wall defining a combustion zone; an outer casing partially defining a cooling plenum about the first wall; a second wall spaced apart from the first wall and defining together therewith a second plenum, the second wall bearing a plurality of perforations for passing fluid from the first plenum in impinging streams upon the first wall; and a plurality of ribs extending between the first and second walls and compartmentalizing the second plenum. The ribs add substantial stiffness to the combustor as well as providing for independently controlled cooling of the substantially isolated compartments formed thereby. The impinging streams provided by the perforations in the second wall substantially increase local fluid velocities and conductive heat transfer.

US Patent:

51972786, Mar 30, 1993

Filed:

Dec 17, 1990

Appl. No.:

7/628290

Inventors:

Paul E. Sabla - Cincinnati OH
Willard J. Dodds - West Chester OH
Donald W. Bahr - Cincinnati OH

Assignee:

General Electric Company - Cincinnati OH

International Classification:

F02C 722

US Classification:

60 3902

Abstract:

A method of operating a double dome combustor includes channeling compressed airflow through an inner dome for generating inner combustion gases having an inner reference velocity greater than an outer reference velocity of outer combustion gases generated from compressed airflow channeled through an outer dome, and diffusing the outer and inner combustion gases in outer and inner combustion zones. One double dome combustor effective for practicing the method in accordance with the present invention includes outer and inner combustor liners and domes, with the domes having outer and inner carburetors disposed therein, respectively. The inner carburetors are sized for generating inner combustion gases in the inner combustion zone having an inner reference velocity greater than an outer reference velocity of the outer combustion gases generated in the outer combustion zone. In a preferred embodiment, the combustor includes an annular centerbody which, along with the combustor outer and inner liners, defines diverging outer and inner combustion zones.