HELICOPTER
First Claim
1. A helicopter comprising a body;
- a main rotor with blades which is driven by a rotor shaft and which is hinge mounted on this rotor shaft, such that the angle between the plane of rotation of the main rotor and the rotor shaft may vary;
a control for moving the angle of incidence of at least one blade of the rotor relative to the angle of incidence of another blade of the rotor cyclically along at least part of a 360 degree rotation path around the rotor shaft, causing a variation in lift force of the blade along at least part of the rotation path and thereby cause the body to be urged in a relatively horizontal direction from a relative position of rest, the control having a control element being movable in a first direction such that the control acts to move the angle of incidence in a first direction, and control element being movable in a second direction opposite to the first direction such that the control acts to move the angle of incidence in a second direction opposite to the first direction.
2 Assignments
0 Petitions
Accused Products
Abstract
A helicopter includes a system to effect motion in a horizontal dimension thereby to direct the desired direction. The rotor blades are driven by a rotor shaft and which is hinge mounted on this rotor shaft, such that the angle between the plane of rotation of the main rotor and the rotor shaft may vary. A control for moving the angle of incidence of at least one blade of the rotor cyclically along at least part of a 360-degree rotation path around the rotor shaft. This causes a variation in a lift force of the blade along at least part of the rotations path. This causes the body to be urged in a relatively horizontal direction from a relative position of rest. The control includes an actuator for engaging with an assembly depending from the rotor, the inter-engagement of the actuator and assembly effecting a change in the angle of incidence of at least the one blade of the rotor. The system includes a rotor, preferably complemented with a stabilizer rotor. There is a control ring attached to the main rotor, and an actuator device connected with the helicopter body structure. The control ring is generally centered around the vertical rotor axis, and moves with the rotor when tilted around the feather axis.
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Citations
54 Claims
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1. A helicopter comprising a body;
- a main rotor with blades which is driven by a rotor shaft and which is hinge mounted on this rotor shaft, such that the angle between the plane of rotation of the main rotor and the rotor shaft may vary;
a control for moving the angle of incidence of at least one blade of the rotor relative to the angle of incidence of another blade of the rotor cyclically along at least part of a 360 degree rotation path around the rotor shaft, causing a variation in lift force of the blade along at least part of the rotation path and thereby cause the body to be urged in a relatively horizontal direction from a relative position of rest, the control having a control element being movable in a first direction such that the control acts to move the angle of incidence in a first direction, and control element being movable in a second direction opposite to the first direction such that the control acts to move the angle of incidence in a second direction opposite to the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- a main rotor with blades which is driven by a rotor shaft and which is hinge mounted on this rotor shaft, such that the angle between the plane of rotation of the main rotor and the rotor shaft may vary;
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12. A helicopter comprising a body with a front end and a rear end, and a longitudinal axis between the ends, a main rotor with blades which is driven by a rotor shaft and which is hinge mounted on this rotor shaft, such that the angle between the plane of rotation of the main rotor and the rotor shaft may vary;
- a tail rotor which is driven by a second rotor shaft directed transversally to the longitudinal axis, an auxiliary rotor driven by the rotor shaft of the main rotor and provided with two rotor elements extending essentially in a line with their longitudinal axis in the sense of rotation of the main rotor is essentially parallel to the longitudinal axis of at least one of the rotor blades of the main rotor or is at a relatively small acute angle relative to the axis, the auxiliary rotor being mounted in a swinging relationship on an oscillatory shaft which is provided essentially transversally to the rotor shaft of the main rotor and being directed essentially transversally to the longitudinal axis of the rotor elements, and the main rotor and the auxiliary rotor being mechanically reactive with each other, such that the swinging motion of the auxiliary rotor controls the angle of incidence of at least one of the rotor blades of the main rotor, and a control for moving the angle of incidence of at least one blade of the rotor cyclically along at least part of a 360 degree rotation path around a rotor shaft, causing a variation in lift force of the blade along the rotational path and thereby cause the body to be urged in a relatively horizontal direction from a relative position of horizontal rest, the relative position of horizontal rest being a relatively hovering position above a ground level.
- View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A helicopter comprising a body having a longitudinal axis between a front end and a rear end, a rotor with rotor blades which is driven by a rotor shaft and which is mounted on this rotor shaft, such that the angle between the plane of rotation of the rotor and the rotor shaft may vary;
- a rotor at the rear end which is driven by a second rotor shaft directed transversally to the longitudinal axis, and multiple controls located at different locations of the rotor shaft for moving the angle of incidence of at least one blade of the rotor cyclically along at least part of a 360 degree rotation path around the rotor shaft, causing a variation in a lift force of the blade along at least part of the rotations path and thereby cause the body to be urged in a relatively horizontal direction from a relative position of rest.
- View Dependent Claims (22, 23, 24)
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25. A helicopter comprising:
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a body; a main rotor with blades, the blades having a generally first longitudinal axis, and the blades being driven by a rotor shaft around a first plane of rotation, and the blades being hinge mounted on the rotor shaft, such that the angle of incidence of at least one blade of the main rotor may vary; an auxiliary rotor driven by the rotor shaft of the main rotor and provided with radial elements having a generally second longitudinal axis extending essentially in a defined relationship with the generally first longitudinal axis, and having a second plane of rotation; the auxiliary rotor being mounted relative to the main rotor to be in a variable angular swinging relationship such that the second plane of rotation is variable relative to the first plane of rotation;
the variation in the second plane of rotation acting to vary the angle of incidence of at least one blade;the main rotor having a first area removed from and partly about the rotor shaft, and the auxiliary rotor having second area removed from and partly about rotor shaft, the first area and the second area being in engagement to adopt different positions of repose between them, such that the relative positions of the first plane of rotation and the second plane of rotation are changeable as the positions of repose change; and motion of the auxiliary rotor acting to control the angle of incidence of at least one of the rotor blades of the main rotor along at least part of a 360 degree rotation path around a rotor shaft. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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42. A helicopter comprising:
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a body; a main rotor with blades, the blades having a generally first longitudinal axis, and the blades being driven by a rotor shaft around a first plane of rotation, and the blades being hinge mounted on the rotor shaft, such that the angle of incidence of at least one blades of the main rotor may vary; an auxiliary rotor driven by the rotor shaft of the main rotor and provided with radial elements having a generally second longitudinal axis extending essentially in a defined relationship with the generally first longitudinal axis, and having a second plane of rotation;
the second plane of rotation being spaced from the first plane of rotation;the auxiliary rotor being mounted relative to the main rotor to be in a variable angular swinging relationship such that the second plane of rotation is variable relative to the first plane of rotation;
the variation in the second plane of rotation acting to vary the angle of incidence of at least one blade;the main rotor having a hub with a pair of engaging faces removed from the rotor shaft, and the auxiliary rotor having a pair of followers directed away from about rotor shaft, the engaging faces and the followers being in engagement, such that the relative positions of the first plane of rotation and the second plane of rotation are changeable relative to different positions of engagement of the engaging faces and followers; and motion of the auxiliary rotor acting to control the angle of incidence of at least one of the rotor blades of the main rotor along at least part of a 360 degree rotation path around a rotor shaft.
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43. A helicopter comprising:
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a body; a main rotor with blades, the blades having a generally first longitudinal axis, and the blades being driven by a rotor shaft around a first plane of rotation, and the blades being hinge mounted on the rotor shaft, such that the angle of the blades of the main rotor may vary; an auxiliary rotor driven by the rotor shaft of the main rotor and provided with radial elements having a generally second longitudinal axis extending essentially in a defined relationship with the generally first longitudinal axis, and having a second plane of rotation;
the second plane of rotation being spaced from the first plane of rotation;the auxiliary rotor being mounted relative to the main rotor to be in a variable angular swinging relationship such that the second plane of rotation is variable relative to the first plane of rotation;
the variation in the second plane of rotation acting to vary the angle of incidence of at least one blade;the main rotor having a hub with a engaging face removed from the rotor shaft, and the auxiliary rotor having a follower, the engaging face and the follower being in engagement, such that the relative positions of the first plane of rotation and the second plane of rotation are changeable relative to different positions of engagement of the engaging face and follower; and motion of the auxiliary rotor acting to control the angle of incidence of the rotor blades of the main rotor along at least part of a 360 degree rotation path around a rotor shaft. - View Dependent Claims (44)
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Specification