Rotary kinetic fluid motors or pumps – Selectively adjustable vane or working fluid control means – Upstream of runner
Patent
1991-10-28
1997-11-04
Carone, Michael J.
Rotary kinetic fluid motors or pumps
Selectively adjustable vane or working fluid control means
Upstream of runner
415159, F01D 1712, F03B 314
Patent
active
056832257
ABSTRACT:
A turbine nozzle for a gas turbine engine subassembly having an axial turbine. The turbine nozzle airfoil-shaped vanes are fixedly attached to one or both of the annular inner and outer casings. Apparatus is provided to vary the vane airflow passage area between the casings and between the pressure side of one vane and the suction side of an adjacent vane. The apparatus varies the area near at least the pressure side of the one vane. Various embodiments of the apparatus include: a small pivotable flap pivotally attached to the outer casing and positioned near the pressure side of the one vane; a small movable flap attached to the outer casing to be movable along the pressure side of the one vane, and a plug member insertable into and withdrawable from the vane airflow passage through the outer casing near at least the pressure side of the one vane.
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"Partially Variable Area Turbine Nozzle", b R.H. Andersen and R.C. Haubert, GE, Cincinnati, OH, presented at AIAA/SAE/ASME 15th Joint Propulsion Conference, Jun. 18-20, 1979, Las Vegas, Nevada.
Dunbar Lawrence Wayne
Orlando Robert Joseph
Carone Michael J.
General Electric Company
Hess Andrew C.
Scanlon Patrick R.
Wesson Theresa M.
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