Systems and methods of redundancy for aircraft inertial signal data
US8204635B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2008 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Mar 13, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C23/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An aircraft inertial system comprises at least two inertial reference units (IRU) that provide a first set of inertial signal data for an aircraft and at least two attitude heading reference systems (AHRS) that provide a second set of the inertial signal data for the aircraft. At least one primary flight display receives the first and the second sets of the inertial signal data, and a standby flight display receives at least the second set of the inertial signal data from at least one of the AHRS. When a single fault condition occurs, the primary flight display continues to operate with fail-operational redundancy from at least three independent sources of the inertial signal data comprising one or more IRU and AHRS combinations. The standby flight display will operate using a different source of the inertial signal data than the source of the inertial signal data for the primary flight display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.