A helicopter has a main rotor with propeller blades which is driven by a rotor shaft and which is hinge-mounted to this rotor shaft. The angle between the surface of rotation of the main rotor and the rotor may vary. A swinging manner on an oscillatory shaft is essentially transverse to the rotor
A helicopter has a main rotor with propeller blades which is driven by a rotor shaft and which is hinge-mounted to this rotor shaft. The angle between the surface of rotation of the main rotor and the rotor may vary. A swinging manner on an oscillatory shaft is essentially transverse to the rotor shaft of the main rotor and is directed transversally to the longitudinal axis of the vanes. The main rotor and the auxiliary rotor are connected to each other by a mechanical link. The swinging motions of the auxiliary rotor controls the angle of incidence (A) of at least one of the propeller blades of the main rotor. There are wings from the body and a stabilizer at the tail.
대표청구항▼
What is claimed is: 1. A remote control toy helicopter comprising a body with a tail; a motor and a battery for the motor, the motor being controllable by a controller remote from the helicopter body; a main rotor with propeller blades which is driven by a rotor shaft on which the blades are mounte
What is claimed is: 1. A remote control toy helicopter comprising a body with a tail; a motor and a battery for the motor, the motor being controllable by a controller remote from the helicopter body; a main rotor with propeller blades which is driven by a rotor shaft on which the blades are mounted; a tail rotor which is driven by a second rotor shaft directed transversally to the rotor shaft of the main rotor, an auxiliary rotor driven by the rotor shaft of the main rotor for rotation in the sense of rotation of the main rotor, the auxiliary rotor being mounted such that the generally longitudinal axis of the auxiliary rotor, in the sense of rotation, is located at an angle relative to a generally longitudinal axis of one of the propeller blades of the main rotor, and wherein the generally longitudinal axis of the auxiliary rotor is along a center line of the auxiliary rotor passing to the rotor shaft, and the generally longitudinal axis of one of the propeller blades of the main rotor is determined from an end area of the blade to the rotor shaft, and the angle is less than about 25 degrees, and preferably about 10 degrees, and wherein the auxiliary rotor is mounted in a swinging relationship on an oscillatory shaft and the swinging motion being relatively upwardly and downwardly about the oscillatory shaft, and which oscillatory shaft is provided essentially transverse to the rotor shaft of the main rotor, such that the swinging motion of the auxiliary rotor controls the angle of incidence of at least one of the propeller blades of the main rotor, and a joint between a propeller blade of the main rotor formed of a spindle which is fixed to the rotor shaft of the main rotor, the spindle being directed substantially parallel to the generally longitudinal axis of at least one of the propeller blades of the main rotor. 2. A remote control toy helicopter comprising a body with a tail; a motor and a battery for the motor, the motor being controllable by a controller remote from the helicopter body; a main rotor with propeller blades which is driven by a rotor shaft on which the blades are a second rotor; a tail rotor which is driven by a second rotor shaft, an auxiliary rotor driven by the rotor shaft of the main rotor for rotation in the sense of rotation of the main rotor, the auxiliary rotor being mounted such that the generally longitudinal axis of the auxiliary rotor is located relative to a generally longitudinal axis of one of the propeller blades of the main rotor, and wherein the auxiliary rotor includes elongated members, the elongated members being directed in the plane defined by the rotation of the auxiliary rotor, and wherein each propeller blade has a profile wherein along the direction of its generally longitudinal axis of each blade includes a first longitudinal convex curve from a position towards the rotor shaft to a position towards an end area of the blade, the convex curve extending over a portion of the length of the blade, and wherein the auxiliary rotor is mounted in a swinging relationship on an oscillatory shaft and the swinging motion being relatively upwardly and downwardly about the oscillatory shaft, and which oscillatory shaft is provided essentially transverse to the rotor shaft of the main rotor, such that the swinging motion of the auxiliary rotor controls the angle of incidence of at least one of the propeller blades of the main rotor, and a joint between a propeller blade of the main rotor formed of a spindle which is fixed to the rotor shaft of the main rotor, the spindle being directed substantially parallel to the generally longitudinal axis of at least one of the propeller blades of the main rotor; and wherein the main rotor includes two propeller blades situated essentially in line with each other, and the elongated members are respectively two rotor elements situated essentially in line with each other, preferably there being only the two blades and only the two rotors respectively, and wherein each blade includes a second transverse convex curve in a profile on its top face from a position towards a leading edge towards a position towards a trailing edge, the second transverse convex curve preferably being present over a substantial generally longitudinal length of the blade, and wherein each rotor blade portion of the includes a transverse concave curve in a profile on its bottom face from a position towards a leading edge towards a position towards a trailing edge, the transverse concave curve preferably being present over a substantial portion of the generally longitudinal length of the blade. 3. A remote control toy helicopter comprising a body with a tail; a motor and a battery for the motor, the motor being controllable by a controller remote from the helicopter body; a main rotor with propeller blades which is driven by a rotor shaft on which the blades are mounted; a tail rotor which is driven by a second rotor shaft directed transversally to the rotor shaft of the main rotor, an auxiliary rotor driven by the rotor shaft of the main rotor for rotation in the sense of rotation of the main rotor, the auxiliary rotor being mounted such that the generally longitudinal axis of the auxiliary rotor, in the sense of rotation, is located at an angle relative to a generally longitudinal axis of one of the propeller blades of the main rotor, and wherein the generally longitudinal axis of the auxiliary rotor is determined along a center line of the auxiliary rotor passing to the rotor shaft, and the generally longitudinal axis of one of the propeller blades of the main rotor is determined from an end area of the blade to the rotor shaft, and the angle is essentially parallel to the generally longitudinal axis of at least one of the propeller blades of the main rotor or at a relatively small acute angle relative to the generally longitudinal axis of the propeller blade, the angle preferably being about 10 degrees, and wherein the auxiliary rotor is mounted in a swinging relationship on an oscillatory shaft and the swinging motion being relatively upwardly and downwardly about the oscillatory shaft, and which oscillatory shaft is provided essentially transverse to the rotor shaft of the main rotor, such that the swinging motion of the auxiliary rotor controls the angle of incidence of at least one of the propeller blades of the main rotor, and a joint between a propeller blade of the main rotor formed of a spindle which is fixed to the rotor shaft of the main rotor, the spindle being directed substantially parallel to the generally longitudinal axis of at least one of the propeller blades of the main rotor. 4. A helicopter according to claim 1 wherein the main rotor includes two propeller blades situated essentially in line with each other, and the auxiliary rotor includes two elongated members, selectively vanes, situated essentially in line with each other, preferably there being only the two blades and only the two elongated members, selectively vanes, respectively, and the center line is selectively a line from a radial end area of the auxiliary rotor passing to the rotor shaft. 5. A helicopter according to claim 2 wherein there is a center line being selectively a line from a radial end area of the auxiliary rotor passing to the rotor shaft. 6. A helicopter according to claim 3 wherein the main rotor includes two propeller blades situated essentially in line with each other, and the auxiliary rotor includes two elongated members, selectively vanes, situated essentially in line with each other, preferably there being only the two blades and only the two elongated members, selectively vanes, respectively, and the center line is selectively a line from a radial end area of the auxiliary rotor passing to the rotor shaft. 7. A helicopter according to claim 1 wherein the main rotor includes two propeller blades situated essentially in line with each other, and the elongated members are respectively two vanes situated essentially in line with each other, preferably there being only the two blades and only the two vanes respectively, and wherein each rotor blade includes a transverse convex curve in a profile on its top face from a position towards a leading edge towards a position towards a trailing edge, the transverse convex curve preferably being present over a substantial generally longitudinal length of the blade. 8. A helicopter according to claim 1 wherein the generally longitudinal axis of the auxiliary rotor is determined along a center line of the auxiliary rotor passing through the rotor shaft, and the generally longitudinal axis of one of the propeller blades of the main rotor is from an end area of the blade to the rotor shaft, and the angle is less than about 25 degrees, and preferably about 10 degrees, and wherein the main rotor includes two propeller blades situated essentially in line with each other, and the auxiliary rotor includes two elongated members, selectively vanes, situated essentially in line with each other, preferably there being only the two blades and only the two elongated members, selectively vanes, respectively, and the center line is selectively a line from a radial end area of the auxiliary rotor to the rotor shaft. 9. A helicopter according to claim 2 wherein the generally longitudinal axis of the auxiliary rotor is determined along a center line of the auxiliary rotor passing through the rotor shaft, and the generally longitudinal axis of one of the propeller blades of the main rotor is from an end area of the blade to the rotor shaft, and an angle between the generally longitudinal axis of the auxiliary rotor and the generally longitudinal axis of one of the propeller blades of the main rotor, in the sense of rotation, is less than about 25 degrees, and preferably about 10 degrees, and wherein the main rotor includes two propeller blades situated essentially in line with each other, and the auxiliary rotor includes two elongated members, selectively canes, situated essentially in line with each other, preferably there being only the two blades and only the two elongated members, selectively vanes, respectively, and the center line is selectively a line from a radial end area of the auxiliary rotor the rotor shaft. 10. A helicopter according to claim 3 wherein the generally longitudinal axis of the auxiliary rotor is determined along a center line of the auxiliary rotor passing through the rotor shaft, and the generally longitudinal axis of one of the propeller blades of the main rotor is from an end area of the blade to the rotor shaft, and wherein the main rotor includes two propeller blades situated essentially in line with each other, and the auxiliary rotor includes two elongated members, selectively vanes, situated essentially in line with each other, preferably there being only the two blades and only the two elongated members, selectively vanes, respectively, and the center line is selectively a line from a radial end area of the auxiliary rotor to the rotor shaft. 11. A helicopter according to claim 1 wherein the propeller blades of the main rotor, and the auxiliary rotor respectively are connected to each other with a mechanical linkage that permits the relative movement between the blades of the propeller and the auxiliary rotor. 12. A helicopter according to claim 2 wherein the propeller blades of the main rotor, and the auxiliary rotor respectively are connected to each other with a mechanical linkage that permits the relative movement between the blades of the propeller and the auxiliary rotor. 13. A helicopter according to claim 1 wherein a fastening point of a rod situated on the main rotor is at a distance from the axis of the spindle of the propeller blades of the main rotor, and another fastening point of the rod is situated on the auxiliary rotor at a distance from the axis of an oscillatory shaft of the auxiliary rotor. 14. A helicopter according to claim 2 wherein a fastening point of a rod situated on the main rotor is at a distance from the axis of the spindle of the propeller blades of the main rotor, and another fastening point of the rod is situated on the auxiliary rotor at a distance from the axis of an oscillatory shaft of the auxiliary rotor. 15. A helicopter according to claim 1 wherein the auxiliary rotor is provided with stabilizing weights which are fixed respectively to elongated members of the auxiliary rotor, the elongated members being directed in the plane of rotation of the auxiliary rotor. 16. A helicopter according to claim 1 wherein the auxiliary rotor is mounted for relative oscillating movement about the rotor shaft so that when one elongated member of the rotor moves relatively upwardly the other elongated arm moves relatively downwardly and being such that for different relative positions, the auxiliary rotor causes the angle of incidence of the main rotor to be different. 17. A helicopter according to claim 2 wherein the auxiliary rotor is mounted for relative oscillating movement about the rotor shaft so that when one elongated member of the rotor moves relatively upwardly the other elongated arm moves relatively downwardly and being such that for different relative positions, the auxiliary rotor causes the angle of incidence of the main rotor to be different. 18. A helicopter according to claim 3 wherein the auxiliary rotor is mounted for relative oscillating movement about the rotor shaft so that when one elongated member of the rotor moves relatively upwardly the other elongated arm moves relatively downwardly and being such that for different relative positions, the auxiliary rotor causes the angle of incidence of the main rotor to be different. 19. A helicopter according to claim 5 wherein the auxiliary rotor is mounted for relative oscillating movement about the rotor shaft so that when one elongated member of the rotor moves relatively upwardly the other elongated arm moves relatively downwardly and being such that for different relative positions, the auxiliary rotor causes the angle of incidence of the main rotor to be different.
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