# US 11,440,641 B2 · Aircraft wing comprising a mobile leading edge flap driven by a linear electric motor

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- Number: US 11,440,641 B2
- Document ID: US11440641B2
- Status: Granted
- Kind: B2
- Application number: 16/345,767
- Filed: 2017-11-02
- Published: 2020-02-20
- Granted: 2022-09-13
- Earliest claimed: 2016-11-04
- Assignees: Sonaca S.A.
- Applicants: Sonaca S.A.
- Inventors: Stéphane Debaisieux; Steve Sciarrabone
- Web page: https://patentgrep.com/patent/US11440641B2

## CPC

- B64C 13/50: using electrical energy
- B64C 9/02: Mounting or supporting thereof
- B64C 9/22: at the front of the wing
- H02K 7/14: Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06)
- H02K 41/031: {of the permanent magnet type}
- B64C: AEROPLANES; HELICOPTERS
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

The invention relates to an aircraft wing comprising a stationary central wing body as well as at least one mobile leading edge flap intended for being moved relative to the stationary central body between an extended position and a retracted position, the wing comprising a device for moving the mobile leading edge flap, the device being provided with at least one mobile drive rail including a front end connected to the mobile flap. According to the invention, the movement device comprises a linear electric motor including: a primary assembly provided with at least one stationary carriage comprising coils, the primary assembly being rigidly connected to the stationary central body of the wing; and a mobile secondary assembly including a magnetic track arranged on the drive rail.

## Claims

### Claim 1

An aircraft wing comprising a fixed central wing body, as well as at least one mobile leading edge flap intended to be moved relative to said fixed central body between a deployed deposition and a retracted position, the wing comprising a device for movement of the mobile leading edge flap, said device being equipped with at least one mobile drive rail comprising a front end connected to the mobile flap,
wherein said movement device comprises a linear electric motor comprising:
a primary assembly equipped with at least one fixed truck comprising coils, the primary assembly being rigidly connected to the fixed central body of the wing; and
a mobile secondary assembly comprising a magnetic pathway arranged on the drive rail, the magnetic pathway including a plurality of permanent magnets attached to the drive rail, said permanent magnets being spaced from one another along the drive rail.

### Claim 2 (depends on 1)

An aircraft comprising at least one wing according to claim 1.

### Claim 3 (depends on 1)

The aircraft wing according to claim 1, wherein the at least one fixed truck includes a slot that receives a flange of the drive rail, said flange having a wall that faces the coils, and wherein the plurality of permanent magnets are attached to said wall of the drive rail.

### Claim 4 (depends on 3)

The aircraft wing according to claim 3, wherein the at least one fixed truck includes rims shaped to receive lateral ends of the flange.

### Claim 5 (depends on 1)

The aircraft wing according to claim 1, wherein the primary assembly comprises at least two fixed trucks spaced apart from each other along the mobile drive rail, wherein said drive rail is guided by the fixed truck, and wherein each of said at least two fixed trucks guides said drive rail.