Wing ice protection heater element network
US7922120B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2007 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Dec 20, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D15/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An ice prevention network comprising a plurality of non-overlapping heater elements arranged in a grid along an airfoil is provided, powered by a multiphase power source, each phase powering selected heater elements that can selectively be powered on and powered off. The grid has a number of zones extending along the airfoil perpendicular to the airflow over the airfoil and a number of sections extending along the surface of the airfoil parallel to the airflow over the airfoil. Each of the heater elements is assigned to a single power phase and arranged such that an arbitrary section may be deactivated without causing a phase imbalance of more than one heating unit and such that a single zone may be activated without causing a phase imbalance of more than one heating unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.