Cycloidal rotor micro-air vehicle
AssigneeThe Texas A&M University System
InventorsMoble Benedict, Carl C. Runco, David A. Coleman
Life of this patent
Estimating the term…
Abstract
A cycloidal rotor air vehicle includes an airframe, a first cycloidal rotor assembly supported by the airframe and configured to rotate about a first axis of rotation relative to the airframe, the first cycloidal rotor assembly including a blade having a longitudinal axis oriented parallel to the first axis of rotation, a first motor configured to rotate the first cycloidal rotor assembly about the first axis of rotation, a first servo coupled to the blade of the first cycloidal rotor assembly and configured to adjust the pitch of the blade, and a control system supported on the airframe and configured to control the operation of the first motor and the first servo.
Claims20
A cycloidal rotor air vehicle, comprising:
- an airframe;
- a first cycloidal rotor assembly supported by the airframe and configured to rotate about a first axis of rotation relative to the airframe, the first cycloidal rotor assembly comprising a rotor frame and a plurality of blades spaced circumferentially around the first axis of rotation, each blade having a longitudinal axis oriented parallel to the first axis of rotation and extending between a root and a longitudinally opposed tip and a pitch rod that is offset from the longitudinal axis, wherein each blade is coupled to the rotor frame by a separate root rod extending longitudinally from the root thereof to cantilever the blade to the rotor frame;
- a first motor configured to rotate the first cycloidal rotor assembly about the first axis of rotation;
- a first servo coupled to each of the plurality of blades of the first cycloidal rotor assembly, wherein the first servo is configured to adjust the pitch of each of the plurality of blades in response to activation of the first servo;
- an offset link having a first end pivotably coupled to an output of the first servo and a second end opposite the first end;
- a plurality of pitch links, wherein each pitch link has a first end pivotably coupled to the second end of the offset link and a second end opposite the first end pivotably coupled to the pitch rod of a separate blade of the plurality of blades, wherein the plurality of pitch links are configured to adjust the pitch of the plurality of blades in response to rotation of the offset link by the first servo;
- and
- a control system supported on the airframe and configured to control the operation of the first motor and the first servo.
A cycloidal rotor air vehicle, comprising:
- an airframe;
- a first cycloidal rotor assembly supported by the airframe and configured to rotate about a first axis of rotation, the first cycloidal rotor assembly comprising a blade having a longitudinal axis parallel with the first axis of rotation, wherein the blade has a longitudinal axis and comprises an outer frame which extends continuously about the entire perimeter of the blade, a root rod extending from the outer frame parallel with the longitudinal axis, and a pitch rod that extends from the outer from parallel with, but offset from, the longitudinal axis and the root rod;
- and
- a first motor configured to rotate the first cycloidal rotor assembly about the first axis of rotation;
- wherein the outer frame of the blade of the first cycloidal rotor assembly comprises a material formed from unidirectional pre-impregnated carbon fiber.
A method for forming a cycloidal rotor air vehicle, comprising:
- (a) laying a strip of unidirectional pre-impregnated carbon fiber onto a mold;
- (b) clamping first and second plates against the pre-impregnated carbon fiber to push the pre-impregnated carbon fiber into the mold;
- (c) curing the pre-impregnated carbon fiber in the mold to form a rotor blade of the cycloidal rotor air vehicle;
- and
- (d) forming the strip of unidirectional pre-impregnated carbon fiber into an outer frame that extends continuously about the entire perimeter of the formed rotor blade.
Dependencies are inferred from the claim text.