An aircraft having a fuselage and a pair of fixed wings, and a propeller comprising at least one mounting member secured to at least one of the wings, a first and second blades rotatably connected to each mounting member and each having an airfoil shape. The first blade is configurable in a locked condition extending parallel to a leading edge of the wing during take-off and landing of the aircraft, and an unlocked, rotating condition, during flight for propelling the aircraft. The first blade is configured to be in the same plane in both the locked and unlocked conditions. The second blade is configured to rotate with the first blade within the plane in an unlocked, rotating condition and is pivotable about a hinge so as to extend transverse to the plane in a stowed condition. The first propeller blade can act as a Handley-Page slat during take-off and landing.
L'invention concerne une hélice (70) pour un aéronef (20) ayant un fuselage (22) et une paire d'ailes fixes (50a, 50b), qui comprend un élément de montage (76) fixé à au moins une aile. Au moins une pale (72) est reliée de façon rotative à chaque élément de montage (76) et a un profil aérodynamique. Ladite pale (72) est dans un état verrouillé pendant le décollage et l'atterrissage de l'aéronef (20) s'étendant parallèlement à un bord d'attaque de l'aile, et dans un état rotatif déverrouillé pendant le vol pour propulser l'aéronef (20).
QUIET SLAT PROPELLER
HELICE A PALE SILENCIEUSE
2021-02-16
Patent
Elektronische Ressource
Englisch