Composite ice protection heater and method of producing same
US7291815B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 24, 2006 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Feb 24, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2214/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention includes a composite ice protection heater for an aircraft. The composite heater includes at least one electrically insulating layer, and at least one electric heater element comprising an electrically conductive layer bonded to the insulating layer. The conductive layer may include a pre-impregnated woven fabric that includes a plurality of threads that include an electrically conductive material, such as carbon or graphite fibers. The composite heater can be incorporated into a composite surface structure of an aircraft. The conductive layer and insulating layer may include a plurality of spaced openings through the layers that cooperate with an underlying open-cell matrix to attenuate noise at the associated surface of an aircraft. A desired electrical resistance of the conductive layer may be obtained by introducing a plurality of discontinuities in the layer, such as spaced holes or slits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.