Automatic reconfiguration of electronic landing display
US4999780A · kind A · utility
24Cited by
16References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1989 |
| Grant date | Mar 12, 1991 |
| Priority date | — |
| Expiry date | Mar 3, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0676
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Automatically reconfiguring an electronic landing display that includes a flight path vector (FPV) symbol and a rising runway symbol combined with a digital altitude value that merge at low aircraft altitudes is disclosed. During approach, when the aircraft descends below a predetermined minimum altitude, e.g., 200 feet, the FPV symbol is removed. When the aircraft is on the ground and during takeoff, the rising runway symbol is removed. Removing one or the other of the merging symbols prevents the symbols from overlapping. Thus, the potential for pilot error due to one of the merging symbols occluding the other is avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.