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US 2016/0244147 A1Published application
Quiet slat propeller
AssigneeNorthrop Grumman Systems Corporation
InventorALLEN A. ARATA
Life of this patent
Estimating the term…
Abstract
A propeller for an aircraft having a fuselage and a pair of fixed wings includes a mounting member secured to at least one wing. At least one blade is rotatably connected to each mounting member and has an airfoil shape. The at least one blade is in a locked condition during take-off and landing of the aircraft extending parallel to a leading edge of the wing and in an unlocked, rotating condition during flight for propelling the aircraft.
Claims20
A propeller for an aircraft having a fuselage and a pair of fixed wings comprising:
- a mounting member secured to at least one wing;
- and
- at least one blade rotatably connected to each mounting member and having an airfoil shape, the at least one blade having a locked condition during take-off and landing of the aircraft extending parallel to a leading edge of the wing and an unlocked, rotating condition during flight for propelling the aircraft.
An aircraft comprising:
- a fuselage extending along a centerline from a first end to a second end;
- a pair of fixed wings extending outwardly from the fuselage, a cross-section of each wing defining an airfoil having a leading edge extending perpendicular to the centerline;
- a tail secured to the second end of the fuselage;
- a first propeller secured to the first end of the fuselage and being rotatable for propelling the aircraft;
- and
- a pair of second propellers secured to the wings, each second propeller including a mounting member for securing the second propeller to each wing and at least one blade rotatably connected to the mounting member, each blade having a locked condition during take-off and landing of the aircraft extending parallel to the leading edge of the respective wing and an unlocked, rotating condition during flight for propelling the aircraft.
3 more elements
A propeller for an aircraft comprising:
- a mounting member securing the propeller to the aircraft;
- and
- at least one blade rotatably connected to the mounting member and having an airfoil shape, each blade having a locked condition during take-off and landing of aircraft extending parallel to an edge of the aircraft and an unlocked, rotating condition during flight for propelling the aircraft.
Dependencies are inferred from the claim text.