Hamilton Sundstrand Corporation

Collins Engine Nozzles, Inc.

Andrew M Caldecutt

Murtuza Lokhandwalla

Mark R Gurvich

Haralambos Cordatos

Thomas J Ocken

Joseph Samo

Jay W Kokas

Richard E Versailles

Jerry Logsdon

Alan F Hunter

Rebecca R Stoner

Nathan Devore

Mark J Kelly

A method of manufacturing a last chance screen for an aircraft engine includes forming an array of holes through a metal sheet with a wire electrode using electrical discharge machining. The array of holes comprises a plurality of holes. Each hole of the plurality of holes comprises a first end and a second end and is surrounded by a wall section such that the last chance screen is defined by the plurality of holes and the plurality of wall sections. The first and second end of each hole are widened by either applying a flow of an abrasive flow medium to the array of holes in two directions or using a conical sinker electrode on either side of the metal sheet. Shaping the first and second end of each hole results in an airfoil-shaped cross-section of each wall section.

Airfoil last chance screen utilizing EDM and AFM

A method of forming a degassing system includes the step of forming a bundle of hollow tube membrane members by wrapping hollow tube membrane members to form the bundle at a temperature above 100° F. (38° C.). Another method of forming a degassing system includes the step of the inserting bundle into an outer canister at a temperature above 100° F. (38° C.). A fuel supply system made by these methods is also disclosed.

Membrane bundle for fuel deoxygenation with enhanced durability

Growing community of inventors

Vernon, CT, United States of America

Andrew M Caldecutt