Patent ID: 9669923
Date: 2017-06-06
CPC Classifications: B64C

Claim:
1. A helicopter comprising a rotor blade control device comprising: a swash-ring including a non-rotating component and a rotating component; at least three actuators disposed around a rotor shaft axis of the helicopter and attached to a stationary component fixed to the helicopter; and at least three coupling means, each of the at least three coupling means for connecting one of the at least three actuators to the non-rotating component; wherein each of the at least three actuators comprises a control shaft capable of rotating about a control axis; wherein each of the at least three coupling means comprises a first lever and a second lever, the first and second levers connected in a fixed manner to one of the control shafts at a first end and a second end of the respective control shaft, respectively; wherein each of the at least three coupling means is coupled to the non-rotating component at a swash-ring coupling point; wherein each control shaft is capable of rotating about an adjustment angle independently of the other control shafts; wherein each of the at least three coupling means further comprises a pushing member including a first end and a second end, each pushing member connected to the corresponding first and second levers of the respective coupling means at the first end of the respective pushing member; wherein each pushing member is capable of pivoting in a rotational joint about a pivotal axis; wherein the first and second levers of each respective coupling means form, together with the respective pushing member, the respective rotational joint; wherein the respective pivotal axis is disposed parallel to the respective control axis; and wherein each pushing member is coupled at the second end to the non-rotating component via a ball joint at the corresponding swash-ring coupling point, such that the corresponding swash-ring coupling point is capable of being pushed along the rotor shaft axis by the respective rotational joint and such that at the corresponding swash-ring coupling point, the non-rotating component and each pushing member are capable of tilting relative to one another in any direction.