[Object] To provide a transonic airfoil capable of reducing pressure drag more than before, a wing having such an airfoil, and an aircraft including such a wing.[Solving Means] An airfoil 11 has a shape in which a pressure coefficient Cp of a static pressure in a chord direction of a leading edge 12 of the airfoil 11 is -0.04 or less at z/c=0.015 (where z represents a coordinate in a direction perpendicular to an airflow direction within a plane that forms an airfoil, with a leading edge being as a reference (an upper wing surface direction is positive, and a lower wing surface direction is negative), and c represents a chord length). Thus, a pressure distribution has a sharp rise, which can decrease pressure drag.
TRANSONIC AIRFOIL, BLADE, AND AIRCRAFT
TRANSSONISCHER TRAGFLÜGEL, SCHAUFEL UND FLUGZEUG
SURFACE PORTANTE TRANSSONIQUE, PALE ET AÉRONEF
2021-08-25
Patent
Elektronische Ressource
Englisch
IPC: | B64C AEROPLANES , Flugzeuge |
Europäisches Patentamt | 2021
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