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AssigneeMassachusetts Institute of Technology
InventorsDaniel L. Gysling, Jonathan S. Simon
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The invention is a turbo machine comprising a rotatably mounted blade row, such as a compressing or pumping rotor and apparatus for providing aerodynamic feedback to the blade row which feedback apparatus has substantially zero pressure difference across it. The feedback may be provided by various apparatus, including at least one free-rotor that is mounted in aerodynamic feedback with the blade row, for instance coaxially with respect to the axis of rotation of the blade row and freely rotatably with respect to the blade row. The free-rotor may also be located in ductwork in communication with the blade row. The feedback may also be provided by a blade row having a variable stagger angle and apparatus to adjust the stagger angle so that the mean pressure rise across the variable stagger angle blade row is zero. The invention also includes a method for controlling operating anomalies such as rotating stall and surge of a turbo machine such as a compressor using the above described apparatus.
A compressing turbo machine comprising:
A compressing turbo machine comprising a rotatably mounted blade row having a variable stagger angle that is automatically changed by fluid flow,.so that the mean pressure difference across the blade row is substantially zero.
A turbo machine for use in a compression system, said turbo machine comprising:
Dependencies are inferred from the claim text.