Ground proximity warning instrument using flight path modulation of glide slope alerting function
US5196847A · kind A · utility
36Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 18, 1991 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Sep 18, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0676
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A ground proximity warning system monitors the flight path angle or barometric or inertially derived descent rate of the aircraft and modulates the glide slope alerting function in accordance with flight path angle or descent rate when the aircraft is not descending rapidly even though it is below the glide slope in order to reduce nuisance warnings without compromising system sensitivity. Alternatively, the repetition rate of the alert may be varied as a function of the flight path angle or descent rate to provide less frequent alerts when the aircraft is not descending rapidly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.