Christopher L Nash

US Patent:

20180202295, Jul 19, 2018

Filed:

Oct 11, 2017

Appl. No.:

15/729861

Inventors:

- Indianapolis IN, US
Tyler C. Gillen - Indianapolis IN, US
Christopher Nash - Indianapolis IN, US
Brian Shoemaker - Indianapolis IN, US
Brett J. Barker - Indianapolis IN, US

International Classification:

F01D 5/18

Abstract:

An airfoil with dual wall cooling for a gas turbine engine comprises a spar having pressure and suction side walls that meet at leading and trailing edges of the airfoil, with a tip extending therebetween. An interior of the spar includes a coolant cavity, and each of the pressure and suction side walls includes an arrangement of pedestals on an outer surface thereof and a plurality of cooling holes in fluid communication with the coolant cavity. A pressure side coversheet overlies the pressure side wall and terminates in a radial direction short of the tip of the spar to form a shelf extending along a chordal direction. Flow channels between the pressure side wall and coversheet are configured to direct coolant from the cooling holes to radial flow outlets adjacent to the shelf. A suction side coversheet overlies the suction side wall, and a coolant circuit between the suction side wall and coversheet does not include radial coolant outlets.

US Patent:

20150343547, Dec 3, 2015

Filed:

Jun 1, 2015

Appl. No.:

14/727593

Inventors:

- Indianapolis IN, US
Christopher Owen Nash - Indianapolis IN, US
Rusty M. Garner - Brownsburg IN, US

International Classification:

B23K 3/08
B23K 37/04
B23K 20/02
B23K 1/00
B23K 20/00

Abstract:

A fixture may include a plurality of alloy pressure pads shaped to contact a component to be brazed or diffusion bonded, a plurality of springs, and at least one alloy support. In some examples, each spring of the plurality of springs is shaped to have a substantially constant stress throughout the spring. The plurality of springs may be between and contacting the at least one alloy support and the plurality of alloy pressure pads to exert spring forces on the plurality of alloy pressure pads. In some examples, the plurality of springs include a plurality of silicon nitride springs.