Back to results
US 8,727,265 B2Granted
Helicopter with cycloidal rotor system
AssigneeAirbus Helicopters Deutschland GmbH
InventorsAndree Altmikus, Marius Bebesel
Life of this patent
Estimating the term…
Abstract
The invention is related to a helicopter (10) comprising a main rotor (12), a cycloidal rotor (14) and a rotating cylinder (18). The rotating cylinder (18) extends along a longitudinal axis of a tail boom (13). The cycloidal rotor (14) extends at least partly along said same tail boom (13) and rotates outside the rotating cylinder (18).
Claims16
A helicopter comprising:
- at least one main rotor, and
- a tail boom extending along a longitudinal axis, said tail boom being provided with at least one anti-torque device,
- wherein at least one cycloidal rotor with individual airfoil blades is provided, said at least one cycloidal rotor extending along said longitudinal axis of the tail boom and being driven to rotate for anti-torque around said longitudinal axis with a controllable rotational speed, and the radius of the main rotor is greater than a length of the cycloidal rotor blades, and wherein at least one rotating cylinder is provided, said rotating cylinder extending at least partly along said same tail boom and rotating inside the cycloidal rotor with an axis of rotation that is eccentrically arranged with respect to an axis of rotation of the cycloidal rotor.
A helicopter comprising:
- a main rotor;
- a tail boom extending along a longitudinal axis;
- and
- a cycloidal rotor surrounding a portion of the tail boom and having an axis of rotation parallel to the longitudinal axis, the cycloidal rotor including a plurality of blades having spans oriented generally parallel to the axis of rotation and configured to generate a lateral anti-torque force;
- and
- a rotating cylinder extending along the longitudinal axis within a portion of the cycloidal rotor and configured to generate a lateral anti-torque force, an axis of rotation of the rotating cylinder being eccentrically offset from the axis of rotation of the cycloidal rotor.
3 more elements
Dependencies are inferred from the claim text.