Ground proximity warning system with means for altering warning threshold in accordance with wind shear
US4189777A · kind A · utility
19Cited by
10References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 1, 1978 |
| Grant date | Feb 19, 1980 |
| Priority date | — |
| Expiry date | May 1, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An aircraft air speed signal is differentiated to provide a signal related to rate of change of air speed. This signal is added to a signal related to aircraft barometric altitude change with the sum signal being compared against aircraft radio altitude to generate warning if the aircraft rate of descent is excessive for the conditions encountered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.