Aircraft antenna cover, aircraft member cover, aircraft, and rain erosion boot for aircraft

Patent metadata

Field	Value
Publication number	US-9896220-B2
Application number	US-201514670629-A
Country	US
Kind code	B2
Filing date	Mar 27, 2015
Priority date	Jul 30, 2014
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

An antenna cover of an aircraft including: a cover that protects an antenna mounted in the aircraft; a conductive layer having conductivity that is provided on an outer side of the cover; and a rain erosion boot that covers one region of the conductive layer, wherein the rain erosion boot includes a main material having an insulating property, is given conductivity, and is grounded to an airframe via the conductive layer, or the rain erosion boot includes a main material having an insulating property, and is given hydrophilicity.

First claim

What is claimed is:

1. An antenna cover of an aircraft comprising:
a cover that protects an antenna mounted in the aircraft;
a conductive layer having conductivity that is provided on an outer side of the cover; and
a rain erosion boot that covers one region of the conductive layer, wherein the rain erosion boot does not entirely cover the conductive layer,
wherein the rain erosion boot includes a main material having an insulating property, is given conductivity, and is grounded to an airframe via the conductive layer, or
the rain erosion boot includes a main material having an insulating property, and is given hydrophilicity.

2. The antenna cover of an aircraft according to claim 1 , wherein the rain erosion boot covers a forward-most portion of the cover.

3. An antenna cover of an aircraft comprising:
a cover that protects an antenna mounted in the aircraft;
a conductive layer having conductivity that is provided on an outer side of the cover; and
a rain erosion boot that covers one region of the conductive layer,
wherein the rain erosion boot includes a main material having an insulating property, is given conductivity, and is grounded to an airframe via the conductive layer,
wherein the rain erosion boot comprises:
conductive particles mixed into the main material that give the rain erosion boot conductivity; or
a conductive filler mixed into the main material that gives the rain erosion boot conductivity.

4. An antenna cover of an aircraft comprising:
a cover that protects an antenna mounted in the aircraft;
a conductive layer having conductivity that is provided on an outer side of the cover; and
a rain erosion boot that covers one region of the conductive layer,
wherein the rain erosion boot includes a main material having an insulating property, and is given hydrophilicity, and
wherein the rain erosion boot comprises a surfacant mixed into the main material that gives the rain erosion boot hydrophilicity.

5. A member cover of an aircraft comprising:
a cover that protects a member mounted in the aircraft; and
a rain erosion boot that covers an outer side of the cover,
wherein the rain erosion boot includes a main material having an insulating property, and is given conductivity,
wherein the member is a lighting device emitting light,
wherein the light emitted from the lighting device is transmitted through the cover, and
wherein the rain erosion boot comprises:
conductive particles mixed into the main material that give the rain erosion boot conductivity; or
a conductive filler mixed into the main material that gives the rain erosion boot conductivity.

6. A member cover of an aircraft comprising:
a cover that protects a member mounted in the aircraft; and
a rain erosion boot that covers an outer side of the cover,
wherein the rain erosion boot includes a main material having an insulating property, and is given hydrophilicity,
wherein the member is a lighting device emitting light,
wherein the light emitted from the lighting device is transmitted through the cover, and
wherein the rain erosion boot comprises a surfacant mixed into the main material that gives the rain erosion boot hydrophilicity.

7. The antenna cover of an aircraft according to claim 3 ,
wherein surface resistivity of the rain erosion boot is 0.5 MΩ/sq to 15 MΩ/sq.

8. The antenna cover of an aircraft according to claim 3 ,
wherein the conductive layer has
a portion that is covered with the rain erosion boot, and
a portion where a lightning protection member through which a current of lightning striking the cover flows is arranged, and
the conductive layer is grounded to the airframe via a fastener that penetrates the conductive layer in a thickness direction and fastens the lightning protection member to the cover.

9. The antenna cover of an aircraft according to claim 8 ,
wherein the lightning protection member is a strip made of metal.

10. The antenna cover of an aircraft according to claim 1 ,
wherein the antenna is mounted at a front end of the airframe,
the cover is formed in a bowl shape so as to cover the antenna from a front side,
the conductive layer is applied to an entire outer surface of the cover, and
the rain erosion boot is provided in a predetermined region located at a front end of the cover.

11. The antenna cover of an aircraft according to claim 1 ,
wherein the rain erosion boot comprises a resin as the main material.

12. The antenna cover of an aircraft according to claim 11 ,
wherein the rain erosion boot is formed of a plurality of polymer layers having different characteristics.

13. The antenna cover of an aircraft according to claim 1 ,
wherein the conductive layer has a thickness of 0.31 to 0.36 mm, and the rain erosion boot has a thickness of 0.1 mm to 1 mm.

14. The antenna cover of an aircraft according to claim 13 ,
wherein the rain erosion boot has a thickness of 0.1 mm to 0.3 mm.

15. An aircraft comprising the antenna cover according to claim 1 .

16. An aircraft comprising the member cover according to claim 3 .

17. An aircraft comprising the member cover according to claim 4 .

18. An aircraft comprising the member cover according to claim 5 .

19. The antenna cover of an aircraft according to claim 5 ,
wherein surface resistivity of the rain erosion boot is 0.5 MΩ/sq to 15 MΩ/sq.

Assignees

• Mitsubishi Aircraft Corp

Inventors

• Yokoi Takashi

Classifications

• H01Q1/281

  Nose antennas · CPC title

• B64C1/36

  adapted to receive antennas or radomes · CPC title

• H01Q1/50

  Structural association of antennas with earthing switches, lead-in devices or lightning protectors · CPC title

• B64D45/02 Primary

  Lightning protectors; Static dischargers · CPC title

• H01Q1/42

  Housings not intimately mechanically associated with radiating elements, e.g. radome · CPC title