Gurney flap
AssigneeClaverham Limited
InventorsSuat Bekircan, Paul Brewer
Life of this patent
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Abstract
A gurney flap arrangement comprises: an airfoil with an opening in a surface of the airfoil; a gurney flap having a first position in which at least a portion of the gurney flap extends through the opening and projects outwardly from the airfoil surface, and a second position in which the gurney flap does not project from the airfoil surface or projects outwardly from the airfoil surface to a lesser extent; and a seal disposed about the opening to seal a gap in the opening between the gurney flap and the airfoil.
Claims6
A gurney flap arrangement comprising:
- an airfoil having an airfoil surface, the airfoil surface having an opening formed therein;
- a seal disposed in the opening that seals the opening;
- and
- a gurney flap having a first position in which at least a portion of the gurney flap extends through the opening and projects outwardly from the airfoil surface, and a second position in which the gurney flap does not project from the airfoil surface or projects outwardly from the airfoil surface to a lesser extent;
- wherein the seal comprises a cap section fixed to a projecting end of the gurney flap that projects outwardly from the airfoil surface and provides an aerodynamic surface of the gurney flap.
A gurney flap arrangement comprising:
- an airfoil having an airfoil surface, the airfoil surface having an opening formed therein;
- a seal disposed in the opening that seals the opening;
- and
- a gurney flap having a first position in which at least a portion of the gurney flap extends through the opening and projects outwardly from the airfoil surface, and a second position in which the gurney flap does not project from the airfoil surface or projects outwardly from the airfoil surface to a lesser extent;
- wherein the seal comprises a cap section fixed to an end of the gurney flap and provides an aerodynamic surface of the gurney flap;
- wherein the seal comprises a fold section connecting the cap section to the airfoil, wherein in the first position the fold section defines a surface curving out from the airfoil towards the end of the gurney flap, and wherein in the second position the fold section retracts into the airfoil.
A gurney flap arrangement comprising:
- an airfoil having an airfoil surface, the airfoil surface having an opening formed therein;
- a seal disposed in the opening that seals the opening;
- and
- a gurney flap having a first position in which at least a portion of the gurney flap extends through the opening and projects outwardly from the airfoil surface, and a second position in which the gurney flap does not project from the airfoil surface or projects outwardly from the airfoil surface to a lesser extent;
- wherein the seal comprises a cap section fixed to an end of the gurney flap and provides an aerodynamic surface of the gurney flap;
- wherein the seal completely covers the opening and fully seals the gurney flap inside the airfoil.
Dependencies are inferred from the claim text.