Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Erodable or permanently deformable
Patent
1978-12-15
1981-03-24
Powell, Jr., Everette A.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Erodable or permanently deformable
277 53, F01D 1108
Patent
active
042577357
ABSTRACT:
A seal and method for making same is provided for use in a gas turbine engine. The seal includes a composite article having a substrate of sintered metallic fibers with an apparent density within the range of 14.0% to 22.5%. The substrate comprises a network of interconnected pores and metallic bonds at points of contact between fibers. The substrate further includes an external face having surface pores communicating with the network of pores. A thin film barrier surface layer, impervious to the passage of fluid, is disposed on the external face of the substrate and fills the surface pores.
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NASA Tech. Memo TM-X-73650 Apr. 1977.
Bradley John S.
Dix Alan W.
General Electric Company
Lawrence Derek P.
Policinski Henry J.
Powell Jr. Everette A.
Walk Donald W.
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