Back to results
US 10,538,315 B2Granted
Method of balancing a main rotor hub
AssigneeSikorsky Aircraft Corporation
InventorKrzysztof Kopanski
Life of this patent
Estimating the term…
Abstract
A rotor system is provided including a rotor hub configured to rotate about an axis and a plurality of rotor blade assemblies mounted to the rotor hub and configured to rotate within a plane about the axis. A vibration reducing system is operably coupled to the rotor hub. The vibration reducing system is arranged at a position offset from a center of rotation of the rotor hub.
Claims13
A rotor system, comprising:
- a rotor hub configured to rotate about an axis;
- a plurality of rotor blade assemblies mounted to the rotor hub and configured to rotate within a plane about the axis;
- a vibration reducing system operably coupled to the rotor hub, the vibration reducing system being arranged at a position offset from a center of rotation of the rotor hub;
- and
- a mechanism having a movable platform mounted to the rotor hub, the vibration reducing system being attached to the movable platform such that the mechanism is configured to move the vibration reducing system relative to the rotor hub.
2 more elements
A rotary wing aircraft, comprising:
- an airframe;
- a main rotor system operably coupled to the airframe, the main rotor system being rotatable about an axis, the main rotor system including:
- a rotor hub;
- a plurality of rotor blade assemblies mounted to the rotor hub and configured to rotate within a plane about the axis;
- a vibration reducing system operably coupled to the rotor hub, the vibration reducing system being arranged at a position offset from a center of rotation of the rotor hub;
- and
- a mechanism having a movable platform mounted to the rotor hub, the vibration reducing system being attached to the movable platform such that the mechanism is configured to move the vibration reducing system relative to the rotor hub.
4 more elements
A method of suppressing vibrations of a rotary wing aircraft, comprising:
- measuring an imbalance between a plurality of rotor blade assemblies mounted to a rotor hub of a rotor system of the rotary wing aircraft;
- determining a balanced position of a vibration reduction system, the balanced position being offset from a center of the rotor hub;
- and
- moving the vibration reduction system to the balanced position.
1 more element
Dependencies are inferred from the claim text.