IP Library › Granted Patent US 11,383,850
Granted Patent B2
US 11,383,850 · App. 16/703,225 · Granted Jul 12, 2022

Integrated electric propulsion assembly

Inventors: Raffaelo Verna (Creedmoor, NC); Riley Griffin (Montpelier, VT); Nathan Wiegman (Essex Junction, VT)
Assignee: BETA AIR, LLC
B64D27/24H02K5/1735H02K7/085H02K7/14H02K9/06H02K11/33H02K21/22B64C29/0008
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Quick Facts
Patent No.
US 11,383,850
App. No.
16/703,225
Granted
Jul 12, 2022
Kind
B2
Abstract

An integrated electric propulsion assembly includes a stator including at least a first magnetic element generating first magnetic field. The assembly includes a propulsor with an integrated rotor, the propulsor further including a hub rotatably mounted to the stator and at least a second magnetic element affixed to the hub, the at least a second magnetic element generating a second magnetic field. At least one of the first magnetic field and the second magnetic field varies with respect to time, wherein the varied magnetic field includes generating a magnetic force between the at least a first magnetic element and the at least a second magnetic element, and the magnetic force causes the hub to rotate with respect to the stator.

Claims (39)

1. An integrated electric propulsion assembly, the assembly comprising:

a stator, wherein the stator comprises a first magnetic element configured to generate a first magnetic field;

a propulsor with an integrated rotor, the propulsor comprising:

a hub rotatably mounted to the stator; and

a second magnetic element affixed to the hub, the second magnetic element configured to generate a second magnetic field;

wherein at least one of a first magnetic field and the second magnetic field further comprises:

a varying magnetic field that varies, wherein the varying magnetic field generates a magnetic force between the a first magnetic element and the a second magnetic element and the magnetic force causes the hub to rotate with respect to the stator; and

wherein the hub further comprises:

an interior space; and

an impeller inserted in the interior space, wherein the impeller is affixed to the hub.

2. The assembly in claim 1 , wherein at least a first magnetic element further comprises an electromagnet.

3. The assembly of claim 1 , wherein:

the at least a first magnetic element further comprises magnetic poles oriented in at least a first direction; and

the second magnetic element further comprises magnetic poles oriented in a second direction.

4. The assembly of claim 1 , wherein:

the stator further comprises a through-hole; and

the hub is coupled to the stator by a shaft rotatably inserted through the through-hole.

5. The assembly of claim 1 , further comprising a bearing cartridge attached to a vehicle, wherein:

the bearing cartridge further comprises a bore; and

at least a portion of the shaft is configured to be inserted through the bore.

6. The assembly of claim 5 , wherein the bearing cartridge contains at least a roller bearing, wherein the at least a roller bearing is:

incorporated within the bore; and

in contact with at least a portion of the shaft.

7. The assembly of claim 1 , wherein the at least a second magnetic element further comprises at least a permanent magnet.

8. The assembly of claim 1 , wherein the at least a varying magnetic field is generated by a variable supply of electric current to at least one of the first magnetic element and the second magnetic element.

9. The assembly of claim 8 , wherein the variable supply of electric current comprises an inverter.

10. The assembly of claim 1 , wherein:

the first magnetic element is housed in a first annular cylindrical section; and

the second magnetic element is housed in a second annular cylindrical section.

11. The assembly of claim 10 , wherein the second annular cylindrical section is concentric with respect to the first annular cylindric section.

12. The assembly of claim 10 , wherein the first annular cylindrical section is concentric with respect to the second annular cylindrical section.

13. The assembly of claim 1 , wherein the stator further comprises an outer cylindrical surface having a first radius.

14. The assembly of claim 13 , wherein the hub further comprises an inner cylindrical surface having a second radius greater than the first radius.

15. The assembly of claim 14 , wherein the outer cylindrical surface is concentrically inserted in the inner cylindrical surface.

16. The assembly of claim 1 , wherein the impeller is configured to generate an air flow within the interior space when the hub rotates.

17. The assembly of claim 1 , wherein the assembly further comprises:

a power source, wherein the power source provides electrical power to at least the stator and the rotor.

18. The assembly of claim 1 , wherein the stator is affixed to a vehicle.

19. The assembly of claim 18 , wherein the vehicle is an electric aircraft.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 27, 2020
From: WIEGMAN, NATHAN
To: BETA AIR, LLC
Reel/Frame 051945/0551 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 25, 2020
From: VERNA, RAFFAELO
To: BETA AIR, LLC
Reel/Frame 051917/0139 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 25, 2020
From: GRIFFIN, RILEY
To: BETA AIR, LLC
Reel/Frame 051917/0429 →
Continuity (2)
Provisional Application 62858281 · Jun 6, 2019
Related Publication 20200385130A1 · Dec 10, 2020