United Technologies Corporation

Charles D Stoner

Robert Russell Mayer

James P Allore

Stephen A Paul

Robert F Mayer

An extended impingement cooling structure to cool outside an air supply plenum comprises an inner wall; an impingement sheet; a series of supports to maintain the inner wall in spaced relation to the impingement sheet, and a baffle supported between the inner wall and the impingement sheet. The baffle has a collector plenum area that receives impingement cooling air from the air supply plenum and a channel in fluid communication with the collector plenum and extending outside the air supply plenum with openings to allow impingement cooling air to pass therethrough and having a series of lands extending into the channel wherein the lands are located in proximity to impingement cooling air outlets in the inner wall.

Extended impingement cooling device and method

A variable geometry exhaust nozzle for a turbine engine includes convergent and divergent flaps that circumscribe a gaspath and define convergent and divergent nozzle sections with a throat therebetween. A projection , which resides on the divergent flaps, extends radially inwardly from the nozzle. The nozzle also includes a coolant flowpath comprising an interior space in the nozzle, an intake for admitting coolant C into the interior space, and a coolant outlet aft of the intake for discharging the coolant from the interior space. The intake resides forward of the throat. During operation, a coolant film flows along the radially inner surface of the nozzle. The projection encourages a portion of the coolant film to enter and flow through the the coolant flowpath to convectively cool the nozzle. The location of the intake, forward of the throat, takes advantage of the locally high gaspath pressure to ensure that an adequate quantity of the coolant enters and flows through the coolant flowpath.

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Rocky Hill, CT, United States of America

Charles D Stoner