LOW-NOISE AIRFOIL FOR AN OPEN ROTOR

LOW-NOISE AIRFOIL FOR AN OPEN ROTOR

An airfoil section of a blade 32 for an open rotor includes: a pressure side 38 and a suction side 40, the pressure side 38 and the suction side 40 intersecting at a leading edge 42 and a trailing edge 44, wherein a chord of the airfoil section is defined as a straight-line distance between the lead...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: TWEEDT, Daniel Lawrence
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
AEROPLANES
AIRCRAFT
AVIATION
COSMONAUTICS
HELICOPTERS
PERFORMING OPERATIONS
TRANSPORTING
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Beschreibung
Zusammenfassung:An airfoil section of a blade 32 for an open rotor includes: a pressure side 38 and a suction side 40, the pressure side 38 and the suction side 40 intersecting at a leading edge 42 and a trailing edge 44, wherein a chord of the airfoil section is defined as a straight-line distance between the leading edge 42 and the trailing edge 44; the airfoil section has a meanline 48 defined midway between the pressure side 38 and the suction side 40; the meanline 48 is shaped such that it includes a predetermined total turning; the meanline 48 is shaped such that less than 15% of the total turning occurs from 40% to 75% of the chord; and the meanline 48 is shaped such that greater than 35% of the total turning occurs in the aft 25% of the chord.