Radar absorbing structure

Patent metadata

Field	Value
Publication number	US-12474469-B2
Application number	US-202118010966-A
Country	US
Kind code	B2
Filing date	Mar 30, 2021
Priority date	Jun 19, 2020
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

A radar-absorbing structure is disclosed which includes a fiber, at least one binding agent disposed on the fiber and thus enabling the fiber to bind to another fiber.

First claim

The invention claimed is:

1 . A radar absorbing structure ( 1 ) comprising:
a plurality of fibers ( 2 ), each of the plurality of fibers ( 2 ) being a glass fiber reinforced fibers or a carbon fiber reinforced fiber, at least one binding agent ( 3 ) disposed on each of the plurality of fibers ( 2 ), enabling each of the plurality of fibers ( 2 ) to bind to another of the plurality of fibers ( 2 ), at least one barrier coating ( 4 ) disposed so as to cover the surface of each of the plurality of fibers ( 2 ), wherein at least one rod ( 5 ) which is graphene and/or graphene-based nanoribbons is disposed on the barrier coating ( 4 ) and at least one particle ( 6 ) is disposed on the binding agent ( 3 ), so that the at least one rod ( 5 ) is adhered to the associated fiber ( 2 ), and enabling the at least one rod ( 5 ) on each associated fiber ( 2 ) to absorb radar, at least one layer ( 7 ) composed of the plurality of fibers ( 2 ) and a binding agent ( 3 ), and at least one part ( 8 ) composed of the at least one layer ( 7 ), and wherein the at least one part ( 8 ) forms at least a part of an aircraft body ( 9 ).

2 . The radar absorbing structure ( 1 ) according to claim 1 , wherein the at least one rod ( 5 ) is disposed on the barrier coating ( 4 ) in a predetermined direction.

3 . The radar absorbing structure ( 1 ) according to claim 1 , wherein one of the as least one layer ( 7 ) is produced from glass fiber reinforced fibers ( 2 ).

4 . The radar absorbing structure ( 1 ) according to claim 1 , wherein one of the at least one layer ( 7 ) is produced from carbon fiber reinforced fibers.

5 . The radar absorbing structure ( 1 ) according to claim 1 , wherein the plurality of fibers ( 2 ) are disposed in the incident direction of radio waves (W) arriving at the least one part ( 8 ).

6 . The radar absorbing structure ( 1 ) as claimed in claim 1 , wherein the at least one layer ( 7 ) comprises at least two layers ( 7 ), wherein one of the at least two layers ( 7 ) is produced from glass fiber reinforced fibers ( 2 ) and another of the at least two layers ( 7 ) is produced from carbon fiber reinforced fibers ( 2 ), wherein the layer ( 7 ) produced from glass fiber reinforced fibers ( 2 ) being disposed closer to an outer surface of the aircraft body ( 9 ) than the layer ( 7 ) produced from carbon fiber reinforced fibers ( 2 ).

7 . The radar absorbing structure ( 1 ) according to claim 1 , wherein each of the plurality of rods ( 5 ) gradually increase in density and/or length from an outer surface of the aircraft body ( 9 ) towards an interior of the aircraft body ( 9 ).

8 . The radar absorbing structure ( 1 ) according to claim 1 , wherein each of the plurality of rods ( 5 ) is coated on the barrier coating ( 4 ) by chemical vapor deposition (CVD) and/or spray coating method.

9 . The radar absorbing structure ( 1 ) according to claim 1 , comprising transition metal particles ( 601 ) from transition metals.

10 . The radar absorbing structure ( 1 ) according to claim 9 , comprising iron-based particles ( 602 ) which are iron-based nanoparticles.

11 . A part ( 8 ) for use in air and/or space and/or marine vehicles formed from the radar absorbing structure ( 1 ) of claim 1 .

Assignees

• Tusas—Turk Havacilik Ve Uzay Sanayii Anonim Sirketi
• Tusas Turk Havacilik Ve Uzay Sanayii Anonim Sirketi

Inventors

• Oz Yahya
• Ergonenc Yavas Zeynep

Classifications

• H01Q17/008

  with a particular shape (H01Q17/007 takes precedence) · CPC title

• H01Q17/005 Primary

  using woven or wound filaments; impregnated nets or clothes · CPC title

• G01S13/933 Primary

  of aircraft or spacecraft · CPC title