Rotary kinetic fluid motors or pumps – Including thermal expansion joint – Radially sliding
Patent
1979-11-06
1981-11-17
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
Including thermal expansion joint
Radially sliding
F01D 2526
Patent
active
043008682
ABSTRACT:
A nozzle guide vane assembly for a gas turbine engine comprises a circumferentially extending array of angularly spaced apart aerofoils each having projections adapted to engage with structure to retain the aerofoil in its longitudinal direction. Inner and outer platform members are separate from the aerofoils and each comprises a thicker support skin and a thinner inner skin. Both skins have aerofoil shaped apertures through which the aerofoils project, the support skin retaining the aerofoil against twisting, circumferential or axial loads and the inner skin serving to define a respective boundary of the gas flow through the assembly. The aerofoil is free to slide through the apertures sufficiently to permit relative expansion in a direction longitudinal of the aerofoil, and sealing means are associated with the inner skins and provide a seal between the skins and the aerofoils.
REFERENCES:
patent: 2799473 (1957-07-01), Smith et al.
patent: 2903237 (1959-09-01), Petrie et al.
patent: 3394919 (1968-07-01), Catterfeld
patent: 3965066 (1976-06-01), Sterman et al.
patent: 4083648 (1978-04-01), Asplund
patent: 4126405 (1978-11-01), Bobo et al.
Henshaw Harry
Wilkinson Wilfred H.
Garrett Robert E.
Rolls-Royce Limited
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