Rotary kinetic fluid motors or pumps – Working fluid bypass
Reexamination Certificate
2006-02-08
2009-06-23
Edgar, Richard (Department: 3745)
Rotary kinetic fluid motors or pumps
Working fluid bypass
C415S914000
Reexamination Certificate
active
07549838
ABSTRACT:
A turbomachine compressor comprises at least one plurality of moving blades and spaced apart therefrom in an axial direction relative to a central longitudinal axis of the turbomachine, a plurality of stationary vanes, and a stationary casing surrounding said plurality of moving blades and including a plurality of bleed holes centered in the range 5% to 50% of the blade chord length and having a diameter less than or equal to 30% of the blade chord length, each bleed hole sloping at two angles of inclination relative to the central longitudinal axis. Advantageously, each bleed hole has a first axis of inclination presenting an angle φ relative to the central longitudinal axis lying in the range 30° to 90°, and a second axis of inclination perpendicular to the first and presenting an angle θ relative to the central longitudinal axis lying in the range 30° to 90°.
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Edgar Richard
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Snecma
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