Harold A Craig

US Patent:

46503994, Mar 17, 1987

Filed:

May 7, 1984

Appl. No.:

6/669560

Inventors:

Harold M. Craig - West Hartford CT
Ernest Feder - West Hartford CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

F01D 518

US Classification:

416 97R

Abstract:

A rotor blade 14 having a spar 138 and shell 134 is disclosed. Various construction details are developed for efficiently transferring rotational loads on the rotor blade to the root section 28 of the spar. The spar has a projection 139 over which extends a portion 100 of the shell and a platform 36 of the rotor blade.

US Patent:

55534554, Sep 10, 1996

Filed:

Dec 21, 1987

Appl. No.:

7/136307

Inventors:

Harold M. Craig - West Hartford CT
Otis Y. Chen - West Hartford CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

F42C 700

US Classification:

60753

Abstract:

A hybrid ceramic article for high temperature applications is disclosed. The thermal barrier comprises an array of refractory ceramic tiles embedded in a fiber reinforced glass-ceramic matrix composite structure. The hybrid ceramic article exhibits high thermal stability and elevated temperature load bearing ability. A combustor liner and a combustor liner panel for a gas turbine engine and also disclosed.

US Patent:

45010536, Feb 26, 1985

Filed:

Jun 14, 1982

Appl. No.:

6/388349

Inventors:

Harold M. Craig - West Hartford CT
Ernest Feder - West Hartford CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B21K 304
B23P 1502
B23P 1504

US Classification:

291568R

Abstract:

A coolable rotor blade 14 for an axial flow rotary machine and a method for making the rotor blade are disclosed. The rotor blade includes a spar 38 and a shell 34 for defining the airfoil surface of the rotor blade. A platform 36 extends over the shell and the spar. The spar has a root 42 and an airfoil section 40. The shell is spaced from the spar and is joined to the airfoil section of the spar for defining cooling passages in the blade. The shell and the platform are each attached to the spar for support against rotational force. The method includes the steps of joining a shell to the airfoil section of the spar which extends over a portion of a projection 139 on the spar and forming a platform about the spar and the shell such that the platform is attached to the spar and extends over the projection and a portion of the shell. In one embodiment, the spar is formed of a first material, the shell of a second material, and the platform a third material.

US Patent:

45839140, Apr 22, 1986

Filed:

Jun 14, 1982

Appl. No.:

6/388328

Inventors:

Harold M. Craig - West Hartford CT
Ernest Feder - West Hartford CT

Assignee:

United Technologies Corp. - Hartford CT

International Classification:

F01D 508
F01D 530

US Classification:

416204A

Abstract:

A rotor assembly 10 having a coolable rotor blade 14 for a gas turbine engine is disclosed. Various construction details are discussed which enable the rotor blade to satisfy the aerodynamic requirements of the engine and the requirements of fatigue life for the rotor assembly. The rotor blade includes a spar 38 and a shell 34 which extends chordwisely beyond the root 42 of the spar. In one embodiment, an axis of symmetry A. sub. r of the root of the spar is parallel to the axis of rotation A of the rotor assembly.

US Patent:

44148160, Nov 15, 1983

Filed:

Apr 2, 1980

Appl. No.:

6/136652

Inventors:

Harold M. Craig - West Hartford CT
Walter B. Wagner - Bolton CT
William J. Strock - Vernon CT

Assignee:

The United States of America as represented by the Administrator of the
National Aeronautics and Space Administration - Washington DC

International Classification:

F23R 360

US Classification:

60757

Abstract:

A combustor liner is fabricated from a plurality of individual segments each containing counter/parallel Finwall material and are arranged circumferentially and axially to define the combustion zone. Each segment is supported by a hook and ring construction to an opened lattice frame with sufficient tolerance between the hook and ring to permit thermal expansion with a minimal of induced stresses.

US Patent:

56395310, Jun 17, 1997

Filed:

Dec 21, 1987

Appl. No.:

7/136306

Inventors:

Otis Y. Chen - West Hartford CT
Harold M. Craig - West Hartford CT
Glenn M. Allen - Ellington CT
David C. Jarmon - Kensington CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B32B 314

US Classification:

428 49

Abstract:

A process for making a hybrid ceramic article is disclosed. The process involves embedding an array of refractory ceramic tiles in a fiber reinforced glass-ceramic matrix composite substrate. The hybrid ceramic article so formed exhibits high thermal stability and elevated temperature load-bearing ability.