Door of aircraft and aircraft having the same

Patent metadata

Field	Value
Publication number	US-9957033-B2
Application number	US-201313740693-A
Country	US
Kind code	B2
Filing date	Jan 14, 2013
Priority date	Jan 17, 2012
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

A fence 30 A is installed on an inner surface 21 a of a door 20 A on the side which faces a landing gear bay 15 , the fence 30 A rising inwardly of the airframe from the inner surface 21 a . When the door 20 A opens outwardly of an airframe due to a pressure difference between the side of an outer surface 21 c of the door 20 A and the side of an inner surface 21 a facing inner part of the landing gear bay 15 during a flight of an aircraft 10 , the fence 30 A closes a gap between the door 20 A and an opening 15 a of the landing gear bay 15 , and thereby prevents air from flowing into the landing gear bay 15 through the gap.

First claim

What is claimed is:

1. An aircraft door which closes an opening formed in an airframe surface of an aircraft, comprising:
a door body installed on the opening, the door body being movable between an open position and a closed position; and
a fence installed at least on an outer periphery portion of the door body that faces a forward side of the airframe, the fence rising inwardly of the airframe from the door body,
wherein when the door body opens outwardly of the airframe due to a differential pressure occurring between an outer side face of the door body facing outward of the airframe and an inner side face of the door body facing inward of the airframe during a flight of the aircraft, the fence closes a gap between an outer periphery of the opening and the outer periphery portion of the door body facing the forward side of the airframe.

2. The aircraft door according to claim 1 , wherein the fence includes a sloped portion sloping toward the forward side of the airframe from a base end portion to a front end portion, the base end portion being located on the side of the door body and the front end portion rising inwardly of the airframe.

3. The aircraft door according to claim 1 , wherein the fence is installed on the inner side face of the door body.

4. The aircraft door according to claim 3 , wherein the fence rises from the inner side face of the door body in an orthogonal direction.

5. The aircraft door according to claim 3 , wherein the fence includes a curved plate portion curved convexly toward a rear part of the airframe.

6. The aircraft door according to claim 1 , wherein the door body is installed on a landing gear leg retractable into a landing gear bay installed in an airframe so as to close the landing gear bay.

7. An aircraft having the aircraft door according to claim 1 .

8. The aircraft door according to claim 1 , wherein the fence extends along the outer periphery portion of the door body that faces a forward side of the airframe.

9. An aircraft door which closes an opening formed in an airframe surface of an aircraft, comprising:
a door body installed on the opening, the door body being movable between an open position and a closed position; and
a fence installed at least on an outer periphery portion of the door body that faces a forward side of the airframe, the fence rising inwardly of the airframe from the door body,
wherein the fence is a flat plate that extends along the outer periphery portion of the door body facing the forward side of the airframe.

10. The aircraft door according to claim 9 , wherein when the door body opens outwardly of the airframe due to a differential pressure occurring between an outer side face of the door body facing outward of the airframe and an inner side face of the door body facing inward of the airframe during a flight of the aircraft, the fence closes a gap between an outer periphery of the opening and the outer periphery portion of the door body facing the forward side of the airframe.

11. The aircraft door according to claim 9 , wherein the flat plate includes first and second surfaces that are sloped toward the forward side of the airframe from a base end portion to a front end portion, the base end portion being located on the an inner side face of the door body and the front end portion rising inwardly of the airframe.

12. The aircraft door according to claim 9 , wherein the fence is installed on an inner side face of the door body.

13. The aircraft door according to claim 9 , wherein the fence rises from an inner side face of the door body in an orthogonal direction.

14. The aircraft door according to claim 9 , wherein the door body is installed on a landing gear leg retractable into a landing gear bay installed in an airframe so as to close the landing gear bay.

15. An aircraft having the aircraft door according to claim 9 .

16. The aircraft door according to claim 9 , wherein the flat plate is oriented such that a rise angle between the flat plate and an inner surface of the door body is an acute angle.

17. An aircraft door which closes an opening formed in an airframe surface of an aircraft, comprising:
a door body installed on the opening, the door body being movable between an open position and a closed position; and
a fence installed at least on an outer periphery portion of the door body that faces a forward side of the airframe, the fence rising inwardly of the airframe from the door body,
wherein the fence includes a curved plate portion curved convexly toward a rear part of the airframe.

18. The aircraft door according to claim 17 , wherein when the door body opens outwardly of the airframe due to a differential pressure occurring between an outer side face of the door body facing outward of the airframe and an inner side face of the door body facing inward of the airframe during a flight of the aircraft, the fence closes a gap between an outer periphery of the opening and the outer periphery portion of the door body facing the forward side of the airframe.

19. The aircraft door according to claim 17 , wherein the fence is installed on the inner side face of the door body.

20. An aircraft having the aircraft door according to claim 17 .

Assignees

• Mitsubishi Aircraft Corp

Inventors

• Maeda Ichiro
• Maeda Hirofumi

Classifications

• B64C25/12

  sideways · CPC title

• B64C1/1407 Primary

  Doors; surrounding frames · CPC title

• B64C25/16

  Fairings movable in conjunction with undercarriage elements · CPC title

• B64C2025/125

  into the fuselage, e.g. main landing gear pivotally retracting into or extending out of the fuselage · CPC title