An airfoil, a fan assembly and an unducted contra-rotating fan engine include fabricating at least one airfoil 72 including a suction 83 and a pressure 81 side coupled together at a leading 84 and a trailing 86 edge and extending therebetween. The airfoil includes a plurality of chord sections having a chord length 94. The airfoil including a tip profile 100 defining a reducing slope extending from the leading edge at the tip portion 88 along at least a portion of the chord length. The tip profile is configured to reduce the high unsteady pressure near the tip portion of the airfoil.
Airfoils including tip profile for noise reduction and method for fabricating same
Tragflächen mit Spitzenprofil zur Geräuschreduktion und Verfahren zur Herstellung davon
Surfaces portantes comprenant un profil de pointe pour la réduction de bruit et son procédé de fabrication
2017-04-12
Patent
Elektronische Ressource
Englisch
IPC: | B64C AEROPLANES , Flugzeuge / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES / F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS |
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