Slat-thrust reverser clearance

Patent metadata

Field	Value
Publication number	US-2016245227-A1
Application number	US-201514626800-A
Country	US
Kind code	A1
Filing date	Feb 19, 2015
Priority date	Feb 19, 2015
Publication date	Aug 25, 2016
Grant date	—

Abstract

A nacelle is provided comprising, a thrust reverser comprising a translating sleeve configured to translate between a stowed position and a deployed position, the translating sleeve comprising a slat cutout for clearance, and a slat door disposed at least partially in the slat cutout in response to the thrust reverser being in the stowed position, wherein the slat door is configured to move in response to the thrust reverser being in the deployed position to expose a portion of the slat cutout to accept a portion of a deployed forward wing slat.

First claim

We claim:

1 . A nacelle comprising:
a thrust reverser comprising a translating sleeve configured to translate between a stowed position and a deployed position, the translating sleeve comprising a slat cutout formed therein; and a slat clearance door disposed at least partially covering the slat cutout when the translating sleeve is in the stowed position, the slat clearance door creating a generally continuous, smooth aerodynamic surface over the slat clearance door relative to the translating sleeve, wherein the slat clearance door is configured to move in response to the thrust reverser being moved to the deployed position to expose a portion of the slat cutout to receive a portion of an aircraft wing slat.

2 . The nacelle of claim 1 , wherein the slat clearance door is coupled to the translating sleeve via a hinge.

3 . The nacelle of claim 2 , further comprising a pylon upon which the thrust reverser is mounted.

4 . The nacelle of claim 3 , wherein the hinge beam comprises a track.

5 . The nacelle of claim 4 , wherein a pin is coupled to the slat clearance door and wherein the pin is mounted in the track.

6 . The nacelle of claim 5 , wherein the pin travels within the track in response to being driven by the translating sleeve.

7 . The nacelle of claim 6 , wherein the slat clearance door is configured to rotate in a second direction in response to the thrust reverser being in the stowed position, the second direction radially outward of a centerline of the nacelle.

8 . The nacelle of claim 6 , wherein the slat clearance door is configured to rotate about the hinge.

9 . The nacelle of claim 1 , wherein the slat clearance door is coupled to a hinge beam via a hinge.

10 . The nacelle of claim 9 , wherein the hinge beam is mounted to a pylon.

11 . The nacelle of claim 9 , wherein the hinge comprises a torsion spring to bias the slat clearance door radially outwards away from a centerline of the nacelle.

12 . The nacelle of claim 11 , wherein, in response to translation of the translating sleeve, the slat clearance door rotates radially outward of the centerline of the nacelle.

13 . The nacelle of claim 12 , wherein the slat clearance door is driven by the translating sleeve.

14 . A method comprising:
translating a translating sleeve of a thrust reverser of a nacelle to a deployed position from a stowed position, the translating sleeve comprising a slat cutout formed therein; moving a slat clearance door in response to the translating to expose a portion of the slat cutout to receive a portion of an aircraft wing slat.

15 . The method of claim 14 , further comprising:
rotating the slat clearance door about a hinge, the hinge coupling the translating sleeve and the slat clearance door.

Assignees

• Rohr Inc

Inventors

• Crawford Sara Christine
• Aten Michael
• Lacko Anthony

Classifications

• B64D29/06

  Attaching of nacelles, fairings or cowlings · CPC title

• B64D33/04

  of exhaust outlets or jet pipes · CPC title

• F02K1/82

  Jet pipe walls, e.g. liners · CPC title

• F02K1/72

  the aft end of the fan housing being movable to uncover openings in the fan housing for the reversed flow · CPC title

• B64C9/22

  at the front of the wing · CPC title