Rotor and aircraft passively stable in hover
First Claim
1. A rotor, generating lift, comprising at least two rotor blades and a generally vertical rotor shaft having a central axis, each rotor blade extending outwards from the rotor shaft, ending in a tip, the rotor having a rotating plane defined by a path that each tip of the rotor blades follows when the rotor rotates, whereinthe rotating plane is tiltable in any direction with respect to a reference plane perpendicular to the rotor shaft axis,at least a part of one or more of the rotor blades has a pitch angle generally fixed relative to said reference plane,at least a part of one or more of the rotor blades has a pitch angle generally fixed relative to the rotating plane.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention discloses a rotor that enables an aircraft to be passively stable in hover. The rotor, having a generally fixed geometry is tiltably connected to its rotor shaft. The outer part of the rotor blades have a pitch fixed relative to the rotational plane, whereas the inner part of the rotor blades have a pitch fixed relative to a reference plane perpendicular to the rotor shaft.
61 Citations
11 Claims
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1. A rotor, generating lift, comprising at least two rotor blades and a generally vertical rotor shaft having a central axis, each rotor blade extending outwards from the rotor shaft, ending in a tip, the rotor having a rotating plane defined by a path that each tip of the rotor blades follows when the rotor rotates, wherein
the rotating plane is tiltable in any direction with respect to a reference plane perpendicular to the rotor shaft axis, at least a part of one or more of the rotor blades has a pitch angle generally fixed relative to said reference plane, at least a part of one or more of the rotor blades has a pitch angle generally fixed relative to the rotating plane.
Specification