United Technologies Corporation

Raytheon Technology Corporation

Raytheon Technologies Corporation

St. Mary, Christopher

Baxley, Richard C.

Yilmaz, Cagdas

Odell, Gary S.

Christopher St Mary

Bernard W Pudvah

Eugene C Gasmen

Stanley Wiecko

Kevin L Corcoran

Jody M Grosso

William S Pratt

Ryan Edward LeBlanc

David Maliniak

Xuedong Zhou

Kevin J Cummings

Charles P Gendrich

Kaliya Balamurugan

John Joseph Papalia

Cagdas Yilmaz

Joseph Wieser

Zhen Wu

Jeff M Carrico

Joseph Steele

Richard C Baxley

Danoris Garcia-Chabrier

Gary S Odell

Donald A Hill

An airfoil has pressure and suction sides spaced apart from one another in a thickness direction and joined to one another at leading and trailing edges. The airfoil extends in a radial direction a span that is in a range of 0.70-0.83 inch (17.8-21.1 mm). A chord length extends in a chordwise direction from the leading edge to the trailing edge at 50% span is in a range of 0.34-0.45 inch (8.5-11.5 mm). The airfoil element includes at least three of a first mode with a frequency of 3748&#xb1;15% Hz, a second mode with a frequency of 6416&#xb1;15% Hz, a third mode with a frequency of 14418&#xb1;15% Hz, a fourth mode with a frequency of 17417&#xb1;15% Hz, a fifth mode with a frequency of 19326&#xb1;15% Hz and a sixth mode with a frequency of 26648&#xb1;15% Hz.

Gas turbine engine airfoil frequency design

A synchronization ring for a variable vane assembly of a gas turbine engine may include a first ring portion and a second ring portion. The first ring portion and the second ring portion may be detachably coupled together to jointly define a plurality of cylindrical bores circumferentially distributed around the synchronization ring and extending radially through the synchronization ring.

Split synchronization ring for variable vane assembly

The present disclosure provides devices and methods related to rotor disk bosses. For example, a rotor disk assembly comprises a first rotor disk, wherein the first rotor disk comprises a web, disposed between a rim and a bore. The rotor disk assembly further comprises a second rotor disk operatively coupled to the first rotor disk, an inter-disk device disposed on the second rotor disk and extending axially toward the first rotor disk, and a boss disposed on the first rotor disk, wherein the boss protrudes axially from the web toward the inter-disk device.

Rotor disk boss

An assembly for operating a device, such as a variable vane, has an arm, a stem to which the arm is connected, the stem having a slot, and a member having a tab which fits into the slot.

Vane arm assembly

A synchronizing ring assembly for a variable guide vane system is disclosed. The synchronizing ring assembly is disposed about an engine axis and includes a synchronizing ring having a radially outer surface with a clevis bracket mounted to the radially outer surface of the synchronizing ring and defining radially extending openings through the clevis bracket. A plurality of fasteners are configured and adapted to be received within the radially extending openings in the clevis bracket for securing the clevis bracket to the radially outer surface of the synchronizing ring.

Radial fastening of tubular synchronizing rings

An alignment tool for use in a gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a clamp portion, a component engagement portion and an arm portion that extends between the clamp portion and the component engagement portion. The clamp portion establishes a fixed datum surface for positioning a component within the gas turbine engine.

Alignment tool for use in a gas turbine engine

An exemplary variable vane actuation system includes, among other things, a vane arm with a vane stem contact surface and a radially outward facing surface. The vane stem contact surface is to contact a vane stem of a variable vane and thereby actuate the variable vane about a radially extending axis. The vane stem contact surface is angled relative to both the radially extending axis and the radially outward facing surface.

Machined vane arm of a variable vane actuation system

A rotor disk for a gas turbine engine includes a hub; a rim with a forward portion and an aft portion; and a plurality of circumferentially spaced radial scallops in the rim to form cooling slots between two disks when the rotor disk is connected to another rotor disk.

Compressor disk bleed air scallops

Growing community of inventors

Hebron, CT, United States of America

Christopher St Mary