Gas turbine engine two degree of freedom variable bleed valve for ice extraction
作者： Thomas Ory Moniz , Raymond Gust Holm , Steven Alan Ross , Byron Andrew Pritchard , George Gould Cunningham
DOI:
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摘要: A gas turbine engine variable bleed apparatus (48) includes a valve door (50) disposed in inlet (47) transition duct (29), rotatable about two or more separate pivot points (160), operable to open and close an aft slot (170) extending outwardly from forward (180) inwardly into (29). Door is between first position with closed second without fully closing (50). axis (160) translatable the points. Transition (29) having conical angle (Al) at least 10 degrees greater than booster (A2) of outer shroud (222) upstream
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