Vortex generation
US-9505485-B2 · Nov 29, 2016 · US
Lifting surface of an aircraft for increasing the generated lift force
US2018148164A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018148164-A1 |
| Application number | US-201715817388-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 20, 2017 |
| Priority date | Nov 25, 2016 |
| Publication date | May 31, 2018 |
| Grant date | — |
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Abstract
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A lifting surface of an aircraft, comprising a leading edge and a notch located in the leading edge. The notch comprises two walls adapted to be parallel to the direction of the incident flow to the lifting surface and a third wall adapted to face the incident flow to the lifting surface when it is in flight. The lifting surface also comprises a retractable cover element, the notch and the retractable cover element being configured such that when the retractable cover element does not cover the notch, the notch is exposed to the incident flow generating a vortex which increases the lift force of the lifting surface, delaying stall.
First claim
Opening claim text (preview).
1 . A lifting surface of an aircraft, comprising: a leading edge and a notch located in said leading edge, the notch comprising two walls adapted to be parallel to the direction of the incident flow to the lifting surface and a third wall adapted to face the incident flow to the lifting surface when it is in flight, the lifting surface also comprising a retractable cover element, the notch and the retractable cover element being configured such that when the retractable cover element does not cover the notch, said notch is exposed to the incident flow generating a vortex which increases the lift force of the lifting surface, delaying stall. 2 . The lifting surface of an aircraft, according to claim 1 , wherein the retractable cover element is movable along the leading edge in the spanwise direction of the lifting surface. 3 . The lifting surface of an aircraft, according to claim 1 , wherein the cross-section of the retractable cover element follows the shape of the cross-section of the leading edge. 4 . The lifting surface of an aircraft, according to claim 1 , wherein the third wall of the notch comprises a streamlined shape. 5 . The lifting surface of an aircraft, according to claim 1 , wherein the length in the chord direction of said notch is smaller than the leading edge chord. 6 . The lifting surface of an aircraft, according to claim 1 , wherein the retractable cover element is retracted toward the root of the lifting surface and it is placed inside the leading edge of the lifting surface when retracted. 7 . The lifting surface of an aircraft, according to claim 1 , wherein the retractable cover element is retracted toward the tip of the lifting surface and is placed above the leading edge of the lifting surface when retracted. 8 . The lifting surface of an aircraft, according to claim 1 , further comprising an actuation mechanism for retracting said retractable cover element. 9 . The lifting surface of an aircraft, according to claim 1 , wherein the aspect ratio chord/span of the notch is greater than 1. 10 . An aircraft comprising a lifting surface according to claim 1 .
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- What does patent US2018148164A1 cover?
- A lifting surface of an aircraft, comprising a leading edge and a notch located in the leading edge. The notch comprises two walls adapted to be parallel to the direction of the incident flow to the lifting surface and a third wall adapted to face the incident flow to the lifting surface when it is in flight. The lifting surface also comprises a retractable cover element, the notch and the retr…
- Who is the assignee on this patent?
- Airbus Operations Sl
- What technology area does this patent fall under?
- Primary CPC classification B64C23/06. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu May 31 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).