Aircraft excessive descent rate warning system
US4215334A · kind A · utility
37Cited by
7References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1978 |
| Grant date | Jul 29, 1980 |
| Priority date | — |
| Expiry date | Feb 9, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D1/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an aircraft excessive rate of descent warning system that utilizes barometric descent rate compared with aircraft altitude above ground to generate a warning, nuisance warnings at airports having terrain that slopes generally downwardly towards the runway can be substantially reduced by modifying either the descent rate signal or the altitude above ground signal as a function of radio altitude rate thereby having the effect of increasing the descent rate required to trigger a warning when the aircraft is descending essentially parallel to the ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.