COMPACT BLEED VALVE ASSEMBLIES

Compact bleed valve assemblies are disclosed. An example turbine engine comprises a rotor blade having an axial chord (C) measured at a tip of the rotor blade, and a variable bleed valve (VBV) including a VBV port defining a bleed flowpath and an exit angle (βexit) for bleed air exiting the VBV port...

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Bibliographische Detailangaben
Hauptverfasser:	Malkus, Thomas, LaMaster, Christopher E, Jothiprasad, Giridhar, Carnes, Jeffrey D
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	Compact bleed valve assemblies are disclosed. An example turbine engine comprises a rotor blade having an axial chord (C) measured at a tip of the rotor blade, and a variable bleed valve (VBV) including a VBV port defining a bleed flowpath and an exit angle (βexit) for bleed air exiting the VBV port, the VBV port including a forward entrance edge and an aft exit edge and a first length (LA) therebetween, and a VBV door corresponding to the VBV port, the VBV door to generate a bleed cavity having a bleed cavity area (BA) in the VBV port when the VBV is in a closed position, the VBV door to move between an open position and the closed position at a rotation angle (Δθ), the VBV door to extend a distance (LAact) beyond the first length (LA), whereinL⁢A+L⁢Aa⁢c⁢tC-2(B⁢V⁢I⁢P+0.1⁢5)-1.3⁢5≤-0.8,and whereinB⁢V⁢I⁢P=0.1⁢5B⁢AC2+0.8⁢5*Δ⁢θ+βe⁢x⁢i⁢t2⁢π.