Aircraft window and aircraft having an electromagnetic shield

• US 9,415,854 B2
• Filed: 07/03/2014
• Issued: 08/16/2016
• Est. Priority Date: 09/14/2011
• Status: Active Grant

• Current Assignee: Mitsubishi Aircraft Corporation (Mitsubishi Heavy Industries, Ltd.)
• Original Assignee: Mitsubishi Aircraft Corporation (Mitsubishi Heavy Industries, Ltd.)
• Inventors: Yokoi, Takashi
• Primary Examiner(s): O'Hara, Brian M
• Assistant Examiner(s): Giczy, Alexander V
• Application Number:
  US14/323,654
• Publication Number:
  US 20140319276A1
• Time in Patent Office: 775 Days
• US Class Current: 1/1
• CPC Class Codes: B60J 10/16 consisting of two or more plastic materials having different physical or chemical properties B60J10/17 takes precedence
• CPC Class Codes: B64C 1/1492 Structure and mounting of the transparent elements in the window or windscreen
• CPC Class Codes: B64D 45/00 Aircraft indicators or protectors not otherwise provided for camouflage F41H3/00
• CPC Class Codes: B64D 45/0063 by avoiding the use of electronic equipment during flight, e.g. of mobile phones or laptops

Abstract

A window body constituting a window of an aircraft includes an electromagnetic shield film, and a conductive paint is applied to an outer perimeter edge face of the window body. A fixing member secures the window body to an airframe with a gasket seal and a window frame interposed therebetween. The fixing member has a first bonding surface on which a conductive film is formed. The first bonding surface is in direct contact with the gasket seal. An electrical path is formed through the electromagnetic shield film, the conductive paint, the gasket seal, the fixing member, and the window frame.

Claims

1. A window of an aircraft attached to an opening formed in an airframe of the aircraft, comprising:

a window body;

a window frame that is made of a conductive material and surrounds an outer perimeter part of the window body;

a gasket seal that is made of a conductive rubber material, at least a portion of the gasket seal being held between the outer perimeter part of the window body and the window frame; and

a fixing member that is made of a conductive material and secures the window body to the airframe with the gasket seal and the window frame interposed between the fixing member and the airframe,

wherein the window body comprises a window panel having light transmissibility, and an electromagnetic shield film that is made of a conductive material and laminated on the window panel,

a conductive paint is applied to an outer perimeter edge face of the window body,

the fixing member has a first bonding surface in direct contact with the gasket seal,

a conductive film is formed on the first bonding surface of the fixing member, and

an electrical path is formed through the electromagnetic shield film, the conductive paint, the gasket seal, the fixing member, and the window frame.

2. The window according to claim 1,

wherein the fixing member is made of an aluminum alloy, and

the conductive film is a chemical conversion coating film.

3. The window according to claim 2,

wherein the chemical conversion coating film is a chromate film.

4. The window according to claim 1,

wherein the fixing member includes a clamp, and

the first bonding surface is formed on a first end of the clamp.

5. The window according to claim 4,

wherein the clamp has a crank shape.

6. The window according to claim 4,

wherein the fixing member further includes a second member having a different shape from the clamp, and

a second bonding surface in direct contact with the second member is formed on a second end of the clamp.

7. The window according to claim 6,

wherein the second member is a clip having an L-shaped cross section.

8. The window according to claim 6,

wherein a conductive film is formed on the second bonding surface of the clamp.

9. The window according to claim 6,

wherein the second member has a third bonding surface in direct contact with the second bonding surface of the clamp, and

a conductive film is formed on the third bonding surface.

10. The window according to claim 6,

wherein one end of the second member is secured to the window frame.

11. The window according to claim 10,

wherein the second member is secured to the window frame by a conductive rivet.

12. The window according to claim 1,

wherein the window frame comprises a plate part that faces a skin of the airframe, and

the window frame is fastened to the skin by a fastener that penetrates through the skin and the plate part.

13. The window according to claim 12,

wherein the fastener comprises a bolt made of metal, and

the bolt has a conductive coating on a surface of the bolt.

14. The window according to claim 13,

wherein an electrical path is formed through the electromagnetic shield film, the conductive paint, the gasket seal, the fixing member, the window frame, the fastener, and the airframe.

15. The window according to claim 1,

wherein the electromagnetic shield film is an electromagnetic shield mesh composed of plated polyester fibers.

16. The window according to claim 1,

wherein the electromagnetic shield film is held between the two window panels.

17. The window according to claim 1,

wherein an electrical bonding resistance of the first bonding surface is smaller than 2.5 mΩ

.

18. The window according to claim 6,

wherein an electrical bonding resistance of the second bonding surface is smaller than 2.5 mΩ

.

19. The window according to claim 1,

wherein the airframe, the window frame, and the fixing member are made of an aluminum alloy.

20. An aircraft comprising the window according to claim 1.