Swashplateless coaxial rotary wing aircraft
AssigneeSikorsky Aircraft Corporation
InventorsErez Eller, Steven D. Weiner, Frederick L. Bourne
Life of this patent
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Abstract
A main rotor system of an aircraft is provided including a first rotor coupled to a transmission and configured to rotate about an axis in a first direction. A second rotor is similarly coupled to the transmission and is configured to rotate about the axis in a second direction. At least the first rotor includes an individual blade control system (IBCS) configured to adjust a pitch of each of a plurality of blade of the first rotor independently. At least one slip ring is configured to transmit electrical power and/or a control signal to the at least one IBCS.
Claims23
A main rotor system of an aircraft comprising:
- a first rotor coupled to a transmission and configured to rotate about a first axis in a first direction;
- a second rotor coupled to the transmission, the second rotor being configured to rotate about the first axis in a second direction, wherein at least the first rotor includes an individual blade control system (IBCS) configured to adjust a pitch of each of a plurality of blades of the first rotor independently;
- and
- at least one slip ring configured to transmit electrical power and/or a control signal to the at least one IBCS.
A rotary wing aircraft comprising:
- an airframe having one or more engines mounted thereto;
- a main rotor system including:
- a first rotor including a first rotor hub and a plurality of first blades extending outwardly therefrom, the first rotor being coupled to a transmission and configured to rotate about an axis in a first direction;
- a second rotor including a second rotor hub and a plurality of second blades extending outwardly therefrom, the second rotor being coupled to the transmission and configured to rotate about the axis in a second direction, wherein the first rotor includes a first individual blade control system (IBCS) configured to adjust a pitch of each of the plurality of first blades independently and the second rotor includes a second IBCS configured to adjust the pitch of each of the plurality of second blades independently;
- and
- at least one slip ring configured to transmit electrical power and/or a control signal to the first IBCS and the second IBCS.
Dependencies are inferred from the claim text.