Ground proximity warning system with time based mode switching
US4495483A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1981 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | Apr 30, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C5/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To increase the effectivity of warnings and to decrease nuisance warnings in a ground proximity warning system having several modes of operation, the switching from one mode to another is done as a function of time. In addition, in a ground proximity warning system where a warning signal is generated in accordance with a predetermined relationship between flight parameters, one or more of these parameters can be varied as a function of time in order to, for example, increase the altitude above ground as a function of time from take-off that a terrain clearance warning may be generated or to decrease as a function of time, the radio altitude below which a negative take-off after a climb warning may be generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.