Excessive sink rate warning system for aircraft
US4060793A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1976 |
| Grant date | Nov 29, 1977 |
| Priority date | — |
| Expiry date | Jul 19, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C5/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an aircraft ground proximity warning system that compares the rate of descent of an aircraft with its altitude above the terrain and in response thereto generates a warning signal when the aircraft's sink rate exceeds a predetermined limit for a particular altitude, a first type of advisory voice warning is generated for combinations of lesser descent rates and greater altitudes and a second type of imperative voice warning is generated for greater sink rates at lower altitudes where the danger of the aircraft impact with the terrain is more significant. In addition, the repetition rate of the advisory warning is increased as a function of increasing descent rate and the amplitude of the advisory warning can similarly be increased as function of increasing descent rate in order to call attention to an increasing undesirable operating condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.