Fiber composite part for an aircraft or spacecraft

Patent metadata

Field	Value
Publication number	US-9669937-B2
Application number	US-86536309-A
Country	US
Kind code	B2
Filing date	Jan 20, 2009
Priority date	Jan 29, 2008
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

In a fiber composite component for an aircraft or spacecraft which has electrically conductive fibers at least in portions, the fibers are coupled with an electrical energy source for charging with current to heat up the fibers and/or for measuring the electrical resistance of the fibers.

First claim

The invention claimed is:

1. An aircraft or spacecraft comprising:
a fibre composite component consisting of a plurality of layers, the fibre composite component being an aerofoil which has an oncoming flow region and longitudinal and transverse regions, wherein electrically conductive fibres are integrally formed with the fibre composite component, said electrically conductive fibres each including a respective metallic coating layer and arranged at least in portions of the oncoming flow region and of the longitudinal and transverse regions, wherein lengths of the electrically conductive fibres in the longitudinal and transverse regions change under external force effects, said electrically conductive fibres running in upper layers or lower standard layers of the fibre composite component;
an electrical energy source coupled to the electrically conductive fibres in the oncoming flow region and in the longitudinal and transverse regions and adapted to provide current to heat the electrically conductive fibres, wherein the electrical energy source is configured to provide at least one of a previously determined measuring current or a previously determined measuring voltage to at least the electrically conductive fibres in the longitudinal and transverse regions, and wherein a connection between the electrical energy source and the electrically conductive fibres is switchable as a function of an air flow speed, a pressure and a temperature; and
a measuring device configured to measure changes in the lengths of the electrically conductive fibres in the longitudinal and transverse regions by measuring changes in resistance of the electrically conductive fibres in the longitudinal and transverse regions based on at least one of the previously determined measuring current or the previously determined measuring voltage.

2. The aircraft or spacecraft according to claim 1 , wherein the electrically conductive fibres comprise at least one of carbon fibres, natural fibres, boron fibres or glass fibres.

3. The aircraft or spacecraft according to claim 1 , wherein the electrical energy source is configured to provide a previously determined electrical power to heat the electrically conductive fibres.

4. The aircraft or spacecraft according to claim 1 , wherein the measuring device is configured for measuring resistance of the respective metallic coating layers of the electrically conductive fibres.

5. The aircraft or spacecraft according to claim 1 , further comprising a lighting protection system coupled to the electrically conductive fibres.

6. The aircraft or spacecraft according to claim 1 , wherein the fibre composite component is produced from prepreg components.

7. The aircraft or spacecraft according to claim 1 , wherein the fibre composite component is produced from infusion components.

8. The aircraft or spacecraft according to claim 1 , wherein at least a portion of the electrically conductive fibres is arranged as a unidirectional tape.

9. The aircraft or spacecraft according to claim 1 , wherein at least a portion of the electrically conductive fibres is arranged as a fabric tape.

10. The aircraft or spacecraft according to claim 1 , wherein the electrically conductive fibres are in the upper layers of the fibre composite component.

11. The aircraft or spacecraft according to claim 1 , wherein the electrically conductive fibres are in the lower standard layers of the fibre composite component.

Assignees

• Lengsfeld Hauke
• Airbus Operations Gmbh

Inventors

• Lengsfeld Hauke

Classifications

• B64D15/12 Primary

  by electric heating (heating arrangements specially adapted for transparent or reflecting areas H05B3/84) · CPC title

• B29C70/885

  with incorporated metallic wires, nets, films or plates (as lost heating elements B29C35/0272, B29C61/0625) · CPC title

• B29C70/882

  partly or totally electrically conductive, e.g. for EMI shielding (conductive floors or floor coverings H05F3/025; EMI shielding in general H05K9/00) · CPC title

• B64C3/26

  Construction, shape, or attachment of separate skins, e.g. panels · CPC title

• B64D43/00

  Arrangements or adaptations of instruments · CPC title