ROTOR BLADE CONTROL DEVICE

摘要

A rotor blade control device for a helicopter, comprising a swash-ring, said swash-ring comprising a non-rotating component of the swash-ring, coupled in a non-rotatable manner to the helicopter, a rotating component of the swash-ring, at least three actuators disposed around a rotor shaft axis of the helicopter, a coupling means between the actuators and the non-rotating component of the swash-ring. The coupling means can be adjusted in terms of its pitch, for changing the position of a swash-ring coupling point on the non-rotating component of the swash-ring along the rotor shaft axis by the actuator, by means of a control shaft, in order to adjust the rotor blades. The coupling means has a pushing member, in addition to at least one lever non-rotatably connected to the control shaft, which is connected at a first end to the lever in a rotational joint, such that it can pivot about a pivotal axis, and is coupled at a second end to the non-rotating component of the swash-ring at a swash-ring coupling point, in a ball joint.

主权项

1. A rotor blade control device for a helicopter, the 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 one of the coupling means for connecting one of the actuators to the non-rotating component, wherein each of the actuators comprises a control shaft capable of rotating about a control axis, and wherein each of the coupling means comprises a lever connected to one of the control shafts in a fixed manner, wherein the coupling means is coupled to the non-rotating component at a swash-ring coupling point, such that when one of the control shafts rotates towards the rotor shaft axis the coupling means pushes against the swash-ring coupling point along the rotor shaft axis, wherein each control shaft is capable of rotating through an adjustment angle independently of each other of the control shafts, and wherein the coupling means further comprises a pushing member including a first end and a second end, the pushing member connected to the lever at the first end, wherein the pushing member is capable of pivoting in a rotational joint about a pivotal axis, and wherein the pushing member is coupled at the second end to the non-rotating component via a ball joint at the swash-ring coupling point, such that at the swash-ring coupling point, the non-rotating component and the pushing member are capable of tilting unidirectionally with respect to one another.