Drone for triggering sea mines
Various embodiments may include a drone for triggering sea mines by means of an external magnetic field. For example a drone may include: a drive having an electric motor; the electric motor comprising a stator and a rotor mounted on a shaft. The stator includes a stator winding arranged on a first carrier. The rotor includes a second carrier and a magnetic or electromagnetic element arranged on the second carrier. The element may be configured to magnetically interact with the stator winding to form a superordinate magnetic field during operation of the electric motor. During operation, the electric motor forms an external magnetic field outside of the electric motor with a magnetic flux density of at least 0.5 mT.
1. A drone for triggering sea mines by generating an external magnetic field, the drone comprising:
a drive having an electric motor for locomotion in water;
the electric motor comprising a stator and a rotor mounted on a rotor shaft;
wherein the stator includes a stator winding arranged on a first carrier;
the rotor includes a second carrier and a magnetic or electromagnetic element arranged on the second carrier;
the magnetic or electromagnetic element and the stator forming a superordinate magnetic field during operation of the electric motor and forming an external magnetic field outside of the electric motor with a magnetic flux density of at least 0.5 mT.
2. The drone as claimed in claim 1 , wherein the rotor is arranged radially inside the stator.
3. The drone as claimed in claim 1 , wherein the stator is arranged radially inside the rotor.
4. The drone as claimed in claim 1 , wherein at least one of the first carrier and the second carrier comprises multiple sections of a material with an effective relative permeability number μr of at most 300.
5. The drone as claimed in claim 1 , further comprising a nonmagnetic motor housing.
6. The drone as claimed in claim 1 , wherein:
the electric motor comprises a synchronous motor; and
the rotor includes an element for generating a magnetic field.
7. The drone as claimed in claim 1 , wherein:
the electric motor comprises an asynchronous motor; and
the rotor includes an element forming a closed current path.
8. The drone as claimed in claim 1 , wherein at least one of the first carrier and the second carrier comprises multiple sections of a material comprising a nonmagnetic steel and/or a plastic.
9. The drone as claimed in claim 1 , wherein the electric motor comprises a superconducting element.
10. The drone as claimed in claim 9 , wherein the rotor comprises a block of superconducting material.
11. The drone as claimed in claim 9 , wherein the rotor comprises a block including a plurality of stacked superconducting tape conductors.
12. The drone as claimed in claim 9 , wherein the rotor includes a superconducting field coil.
13. The drone as claimed in claim 9 , wherein the stator winding includes a superconducting electrical conductor.
14. The drone as claimed in claim 9 , wherein the superconducting electrical conductor comprises a superconducting material.
15. The drone as claimed in claim 6 , wherein the rotor includes at least one of a permanent magnet or an electrical field coil.
16. The drone as claimed in claim 7 , wherein the rotor includes at least one of a squirrel cage, an annularly short-circuited rotor coil, or a short-circuitable rotor coil.
17. The drone as claimed in claim 14 , wherein the superconducting electrical conductor comprises at least one of magnesium diboride or a material having a formula: REBa 2 Cu 3 O x .