Magnetically lifted vehicles using hover engines
Electromechanical systems using magnetic fields to induce eddy currents and generate lift are described. Magnet configurations which can be employed in the systems are illustrated. The magnet configuration can be used to generate lift and/or thrust. Arrangements of hover engines, which can employ the magnet configurations, are described. Further, vehicles, which employ the hover engines and associated hover engines are described.
1. A hover system comprising:
an electric motor including a winding, a first set of permanent magnets, a shaft and a first structure which holds the first permanent magnets wherein the first structure is coupled to the shaft such that, when an electric current is applied to the winding, the shaft, the first structure and the first set of permanent magnets rotate about a first axis of rotation;
a second structure holding a second set of permanent magnets wherein the second set of permanent magnets are rotated about a second axis of rotation to induce eddy currents in a substrate such that the induced eddy currents and the second set of permanent magnets interact to generate a lift force;
wherein the second set of permanent magnets is located between a first radial distance and a second radial distance that is greater than the first radial distance, as measured along a first line perpendicular to the second axis of rotation wherein the second set of magnets includes i) a first plurality of pole magnets each of the first plurality of pole magnets having a first polarity direction which is approximately parallel to the first axis of rotation and ii) a first plurality of guide magnets each of the first plurality of guide magnets having a second polarity direction which is approximately perpendicular to the second axis of rotation;
a third structure holding third second set of permanent magnets wherein the third set of permanent magnets are rotated about a third axis of rotation to induce eddy currents in the substrate such that the induced eddy currents and the third set of permanent magnets interact to generate the lift force;
wherein the third set of permanent magnets is located between a third radial distance and a fourth radial distance that is greater than the third radial distance, as measured along a second line perpendicular to the third axis of rotation, wherein the third set of magnets includes a second plurality of pole magnets each of the second plurality of pole magnets having a third polarity direction which is approximately parallel to the third axis of rotation and a second plurality of guide magnets each guide magnet having a fourth polarity direction which is approximately perpendicular to the third axis of rotation;
a torque transmission mechanism configured to transfer torque from the electric motor to the second structure and the third structure to cause the second structure to rotate about the second axis of rotation and the third structure to rotate about the third axis of rotation;
a first housing, which at least partially encloses the second structure, the housing having a first top, a first bottom and first sides,
wherein a first portion of the first bottom is disposed beneath the second set of permanent magnets and between the first radial distance and the second radial distance; and
a second housing, which at least partially encloses the third structure, the second housing having a second top, a second bottom and second sides,
wherein a first portion of the second bottom is disposed beneath the third set of permanent magnets and between the third radial distance and the fourth radial distance.
2. The hover system of claim 1 , wherein the first axis of rotation, the second axis of rotation and the third axis of rotation are parallel to one another.
3. The hover system of claim 1 , wherein the torque transmission mechanism further comprises one or more of gears, belts or combinations thereof.
4. The hover system of claim 1 , further comprising:
wherein the bottom of the first housing includes an interior side facing the second set of magnets and an exterior side facing the substrate further comprising:
a fourth structure on the interior side of the housing configured to receive a bearing that allows rotational motion wherein a rotating portion of the second structure is in contact with the bearing.
5. The hover system of claim 4 , wherein the fourth structure includes a first portion in an interior of the housing and a second portion exterior to the housing.
6. The hover system of claim 5 , wherein the second portion of fourth structure extends towards the substrate to allow the hover system to rest on the substrate without the bottom of the first housing touching the substrate.
7. The hover system of claim 1 , wherein first set of permanent magnets is disposed on a side of the windings within a radial distance range, as measured along a line perpendicular to the first axis of rotation, that is greater than the winding.
8. The hover system of claim 1 , further comprising a fourth structure wherein the electric motor, the second structure and the third structure are coupled to fourth structure.
9. The hover system of claim 8 , further comprising a battery configured to supply power to the electric motor and mechanically coupled to the fourth structure.
10. The hover system of claim 8 , further comprising an electronic speed controller electrically coupled to the electric motor and mechanically coupled to the fourth structure.
11. The hover system of claim 1 , wherein the electric motor is one of an AC motor or a DC motor.
12. A vehicle comprising:
an electric motor including a winding, a first set of permanent magnets, a shaft and a first structure which holds the first permanent magnets wherein the first structure is coupled to the shaft such that, when an electric current is applied to the winding, the shaft, the first structure and the first set of permanent magnets rotate about a first axis of rotation;
a second structure holding a second set of permanent magnets wherein the second set of permanent magnets are rotated about a second axis of rotation to induce eddy currents in a substrate such that the induced eddy currents and the second set of permanent magnets interact to generate a lift force;
wherein the second set of permanent magnets is located between a first radial distance and a second radial distance that is greater than the first radial distance, as measured along a first line perpendicular to the second axis of rotation wherein the second set of magnets includes i) a first plurality of pole magnets each of the first plurality of pole magnets having a first polarity direction which is approximately parallel to the first axis of rotation and ii) a first plurality of guide magnets each of the first plurality of guide magnets having a second polarity direction which is approximately perpendicular to the second axis of rotation;
a third structure holding third second set of permanent magnets wherein the third set of permanent magnets are rotated about a third axis of rotation to induce eddy currents in the substrate such that the induced eddy currents and the third set of permanent magnets interact to generate the lift force;
wherein the third set of permanent magnets is located between a third radial distance and a fourth radial distance that is greater than the third radial distance, as measured along a second line perpendicular to the third axis of rotation, wherein the third set of magnets includes a second plurality of pole magnets each of the second plurality of pole magnets having a third polarity direction which is approximately parallel to the third axis of rotation and a second plurality of guide magnets each guide magnet having a fourth polarity direction which is approximately perpendicular to the third axis of rotation;
a torque transmission mechanism configured to transfer torque from the electric motor to the second structure and the third structure to cause the second structure to rotate about the second axis of rotation and the third structure to rotate about the third axis of rotation;
a first housing, which at least partially encloses the second structure, the housing having a first top, a first bottom and first sides,
wherein a first portion of the first bottom is disposed beneath the second set of permanent magnets and between the first radial distance and the second radial distance;
a second housing, which at least partially encloses the third structure, the second housing having a second top, a second bottom and second sides,
wherein a first portion of the second bottom is disposed beneath the third set of permanent magnets and between the third radial distance and the fourth radial distance
a fourth structure wherein the electric motor, the second structure and the third structure are coupled to the fourth structure; and
an on-board electric power source, coupled to the fourth structure, that supplies the electric current to the electric motor.
13. The vehicle of claim 12 , further comprising a platform, coupled to the fourth structure, configured to receive a payload.
14. The vehicle of claim 12 , wherein the substrate is formed from one of copper or aluminum.
15. The vehicle of claim 12 , wherein the permanent magnets are neodymium magnets.
16. The vehicle of claim 12 , further comprising a flight control board.
17. The vehicle of claim 12 , wherein the on-board electric power source is one of lithium ion or lithium polymer batteries.
18. The vehicle of claim 12 , further comprising an electronic speed controller coupled to the electric motor.
19. The vehicle of claim 12 , wherein the first axis of rotation, the second axis of rotation and the third axis of rotation are parallel to one another.
20. The vehicle of claim 12 , wherein the torque transmission mechanism further comprises one or more of gears, belts or combinations thereof.