Flight director go-around mode
US4577275A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1983 |
| Grant date | Mar 18, 1986 |
| Priority date | — |
| Expiry date | May 31, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0676
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An improved flight director go-around mode adjusts the collective stick position in a closed loop to increase lift to a desired value. If the engagement airspeed is below the maximum rate of climb airspeed, the airspeed is increased towards the maximum rate of climb airspeed at a moderate rate. When the maximum rate of climb airspeed is attained, or if the engagement airspeed is at least the maximum rate of climb airspeed, and the rate of climb is satisfactory, the airspeed is maintained. If the engagement airspeed is greater than the maximum rate of climb airspeed and the desired rate of climb is not achieved within ten seconds, the airspeed is decreased towards the maximum rate of climb airspeed. Heading or course is automatically maintained when go-around is engaged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.