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 the rotor shaft, the main rotor being in a plane of rotation at an angle relative to the rotor shaft, a control for moving an 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 the 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, and including a slider between an actuator and an assembly, and wherein the slider includes a pin, the pin being fixedly mounted on the slider and extending in a direction transverse to a direction of a sliding movement of the slider, the pin being for engaging a ring associated with the assembly, and the sliding movement being transverse to the rotor shaft.
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.
241 Citations
16 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 the rotor shaft, the main rotor being in a plane of rotation at an angle relative to the rotor shaft, a control for moving an 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 the 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, and including a slider between an actuator and an assembly, and wherein the slider includes a pin, the pin being fixedly mounted on the slider and extending in a direction transverse to a direction of a sliding movement of the slider, the pin being for engaging a ring associated with the assembly, and the sliding movement being transverse to the rotor shaft.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- 12. 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 the rotor shaft, 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 an 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, and including a slider between an actuator and an assembly, and wherein slider includes a pin, the pin being fixedly mounted on the slider and extending in a direction transverse to a direction of a sliding movement of the slider, the pin being for engaging a ring associated with the assembly, and the sliding movement being transverse to the rotor shaft.
Specification