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A rotor assembly having a rotor hub, a plurality of yokes, and a plurality of swing arms is provided. The yoke depending from the rotor hub. Each swing arm is movably positioned on the rotor hub for rotation between an unlocked position and a locked position. The yokes are freely movable about a pit

A rotor assembly having a rotor hub, a plurality of yokes, and a plurality of swing arms is provided. The yoke depending from the rotor hub. Each swing arm is movably positioned on the rotor hub for rotation between an unlocked position and a locked position. The yokes are freely movable about a pitch axis and a lead/lag axis when the swing arms are in the unlocked position and the yokes are locked in a predetermined pitch position and a predetermined lead/lag position when the swing arms are in the locked position.

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The inventioned claimed is: 1. A rotor assembly comprising: a rotor hub configured to rotate about a rotor hub axis; a plurality of yokes depending from said rotor hub; and a plurality of swing arms corresponding in number to said plurality of yokes, each of said plurality of swing arms being movab

The inventioned claimed is: 1. A rotor assembly comprising: a rotor hub configured to rotate about a rotor hub axis; a plurality of yokes depending from said rotor hub; and a plurality of swing arms corresponding in number to said plurality of yokes, each of said plurality of swing arms being movably positioned on the rotor hub for rotation about a swing arm axis between an unlocked position and a locked position, said plurality of yokes being freely movable about a pitch axis and a lead/lag axis when said plurality of swing arms are in said unlocked position and said plurality of yokes being locked in a predetermined pitch position and a predetermined lead/lag position when said plurality of swing arms are in said locked position, wherein said swing arm axis is perpendicular to said rotor hub axis. 2. The rotor assembly of claim 1, further comprising a plurality of blade hinges corresponding in number to said plurality of yokes, each of said plurality of blade hinges being secured to a respective one of said plurality of yokes for movement about a fold axis between a flight position and a non-flight position. 3. The rotor assembly of claim 2, further comprising a rotor blade secured to each of said plurality of blade hinges by a blade cuff. 4. The rotor assembly of claim 2, further comprising a locking pin at each of said plurality of blade hinges, said locking pin being moveable between an extended position and a retracted position, said plurality of blade hinges being moveable between said flight and non-flight positions when said locking pins are in said retracted position and said plurality of blade hinges being secured in said flight position when said locking pins are in said extended position. 5. The rotor assembly of claim 2, further comprising a distance between said swing arm axis and said rotor hub axis is smaller than a distance between said fold axis and said rotor hub axis. 6. The rotor assembly of claim 2, wherein said swing arm axis remains fixed with respect to said rotor hub axis during movement about said folding axis. 7. The rotor assembly of claim 1, wherein each of said plurality of swing arms comprise a locking pin that mates with a locking lug of said plurality of yokes when said plurality of swing arms are in said locked position. 8. The rotor assembly of claim 1, wherein said plurality of swing arms are configured to move said plurality of yokes to said predetermined lead/lag position as said plurality of swing arms are moved from said unlocked position to said locked position. 9. The rotor assembly of claim 8, wherein said predetermined lead/lag position is a neutral lead/lag position. 10. The rotor assembly of claim 1, wherein said predetermined pitch position for each of said plurality of yokes is different. 11. The rotor assembly of claim 10, wherein said plurality of swing arms are different from blade-to-blade. 12. The rotor assembly of claim 1, wherein each of said plurality of swing arms comprises a pair of swing arms. 13. A rotor assembly comprising: a rotor hub that rotates about a rotor hub axis; a yoke depending from said rotor hub; and a swing arm movably positioned on the rotor hub for rotation about a swing arm axis between an unlocked position and a locked position, said yoke being freely movable about a pitch axis and a lead/lag axis when said swing arm is in said unlocked position and said yoke being locked in a predetermined pitch position and a predetermined lead/lag position when said swing arm is in said locked position, wherein said swing arm axis is perpendicular to said rotor hub axis. 14. The rotor assembly of claim 13, further comprising a blade hinge secured to said yoke for movement about a fold axis between a flight position and a non-flight position. 15. The rotor assembly of claim 14, further comprising a locking pin being moveable between an extended position and a retracted position, said blade hinge being moveable between said flight and non-flight positions when said locking pin is in said retracted position and said blade hinge being secured in said flight position when said locking pin is in said extended position. 16. The rotor assembly of claim 15, further comprising a motor for moving said blade hinge between said flight and non-flight positions and said locking pin between said extended and retracted positions. 17. The rotor assembly of claim 13, wherein swing arm comprises a pair of swing arms each having a locking pin that mates with a locking lug of said yokes when said swing arm is in said locked position. 18. The rotor assembly of claim 13, wherein said swing arm is configured to move said yoke to said predetermined lead/lag position as said swing arm is moved from said unlocked position to said locked position. 19. A method for folding a blade of a rotorcraft, comprising: moving a swing arm on a rotor hub, which rotates about a rotor hub axis, from an unlocked position to a locked position so that said swing arm moves about a swing arm axis that is perpendicular to the rotor hub axis and moves a yoke depending from the rotor hub to a predetermined lead/lag position; and engaging a pin on said swing arm with a lug on said yoke when said swing arm is in said locked position to lock said yoke in said predetermined lead/lag position and to lock said yoke in a predetermined pitch position. 20. The method of claim 19, further comprising moving a locking pin from an extended position to a retracted position so that a blade hinge secured to the blade is pivotable on said yoke about a hinge pin. 21. The method of claim 20, further comprising pivoting said blade hinge on said yoke to fold the blade. 22. The method of claim 19, wherein said predetermined lead/lag position is a neutral lead/lag position. 23. The method of claim 19, further comprising adding or removing spacers between swing arm and said pin.