United Technologies Corporation

United States of America As Represented by the Secretary of the Air Force

Joseph H Ewing, Jr

Daniel E Kane

Kevin L Worley

Arthur J Van Suetendael

Saed Safai

A composite thermal insulation structure particularly suited for gas turbine engine applications is disclosed. An aspect of the present invention includes a composite thermal insulation structure having a backing, a ceramic pile woven substantially perpendicular into the backing, and a ceramic matrix material infiltrated in the ceramic fiber pile.

Composite thermal insulation structure

A shroud for a rotor assembly is provided comprising a mounting ring, an aft seal ring, a forward seal ring, and a blade outer air seal. The mounting ring is fixed within the casing surrounding the rotor assembly, and includes a first attachment apparatus. The blade outer air seal includes a plurality of body segments. Each body segment includes a first face, a second face, a plurality of passages for receiving cooling air disposed between the faces, a second attachment apparatus, and a post for biasing each the body segment in contact with the aft seal ring. The first and second attachment apparatus cooperate to suspend the blade outer seal segments in close proximity to the rotor assembly.

Rotor assembly shroud

Lightweight, long-life combustion liner comprises a two-dimensional array of thin walled metal liner cells welded to a liner support structure and having thermal expansion gaps between side wall cell portions. Cooling air orfices are formed in the cells for producing a cooling air film at upper portions thereof. The resulting liner has no moving parts such as slip joints, which can fail under vibrational stresses, and thus maintenance costs are reduced.

Segmented cell wall liner for a combustion chamber

Disclosed is a two-dimensional nozzle for a gas turbine engine which, through the use of divergent flaps mounted on pivot shafts eccentric to the side disks in which they are received, provides thrust vectoring and low observability flight operation.

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Lake Park, FL, United States of America

Joseph H Ewing, Jr