Main landing gear bay of aircraft and aircraft

Patent metadata

Field	Value
Publication number	US-9415864-B2
Application number	US-201414301792-A
Country	US
Kind code	B2
Filing date	Jun 11, 2014
Priority date	Jun 27, 2013
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

A main landing gear bay 15 which is formed inward of a fuselage 11 of an aircraft 10 from an opening portion provided in a surface of the fuselage 11 so as to store a main landing gear 13 of the aircraft 10 , the main landing gear bay 15 including inclined regions 16 and 17 that are continuous from a rim of the opening portion to the fuselage 11 surface in an airframe axis direction X of the aircraft 10 , wherein the inclined regions 16 and 17 are formed so as to have a larger depth toward the rim of the opening portion. Since the inclined regions 16 and 17 are formed so as to have a larger depth toward the rim of the opening portion, the aerodynamic drag acting on the main landing gear bay can be reduced. Accordingly, the fuel consumption of the aircraft can be improved.

First claim

What is claimed is:

1. An Aircraft comprising:
a fuselage having a longitudinal axis direction and a bottom surface;
a main landing gear bay formed inside the fuselage of the aircraft, the main landing gear bay having a storage bay for storing a wheel, the storage bay being defined by at least one wall extending into the fuselage, said at least one wall defining an opening in the bottom surface for accommodating the wheel; and
at least one inclined region forming a depression in the bottom surface of the fuselage and extending along said longitudinal axis direction from said at least one wall to a rim of the inclined region, said at least one inclined region becoming continuously deeper from the rim to said at least one wall.

2. The main landing gear bay of the aircraft according to claim 1 , wherein the at least one inclined region is formed on one or both of a front side and a rear side of the opening in the bottom surface.

3. The main landing gear bay of the aircraft according to claim 1 , wherein the at least one inclined region is formed within a range covered by the opening in a direction perpendicular to the longitudinal axis direction.

4. The main landing gear bay of the aircraft according to claim 2 , wherein the at least one inclined region is formed within a range covered by the opening in a direction perpendicular to the longitudinal axis direction.

5. The main landing gear bay of the aircraft according to claim 2 , wherein the at least one inclined region is formed on the front side of the opening in the bottom surface.

6. The main landing gear bay of the aircraft according to claim 2 , wherein the at least one inclined region is formed on the rear side of the opening in the bottom surface.

7. The main landing gear bay of the aircraft according to claim 2 , wherein the at least one inclined region is formed on both of the front side and the rear side of the opening in the bottom surface.

Assignees

• Mitsubishi Aircraft Corp

Inventors

• Takenaka Keizo
• Hatanaka Keita
• Kodama Masaru

Classifications

• B64C2025/003

  Means for reducing landing gear noise, or turbulent flow around it, e.g. landing gear doors used as deflectors · CPC title

• B64C25/12 Primary

  sideways · CPC title