Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1980-10-15
1983-03-08
Crane, Daniel C.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
291568H, 416 97A, 416241B, C04B 3900, F01D 508
Patent
active
043760040
ABSTRACT:
A transpiration cooled ceramic blade for a gas turbine is shown wherein a spar or strut member defining a root portion and an airfoil portion provides the main structural component of the blade. The air foil portion contains longitudinal grooves in the surface in flow communication with an air flow passage in the root portion and a flexible perforated ceramic tape is wrapped around the air foil portion with the perforations therein in registry with the grooves in the core. The flexible ceramic tape and the strut assembly are heated initially to a low temperature to drive off the binder forming the tape and then heated to a relatively high temperature to fuse the ceramic component of the tape together and to the strut to form a unitary blade structure with internal air flow paths and transpiration cooling orifices through the skin.
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"Application and Firing Instructions for Transfer Tapes" from Vitta Corporation Publication, Wilton, Conn., Bulletin No. AI-01, Aug., 1971.
Andersson Clarence A.
Bratton Raymond J.
Crane Daniel C.
Possessky E. F.
Westinghouse Electric Corp.
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