Method and system for engaging hovering flight for a rotary wing aircraft, enabling it to maintain either track or heading depending on its forward speed
US9573675B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2015 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Jul 27, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/102
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and a system for engaging hovering flight for a rotary wing aircraft. A first mode of operation makes it possible, while the longitudinal speed UX of the aircraft is greater than a first threshold speed Vthresh1 to approach a stop position S while maintaining track relative to the ground, the flight setpoints of an autopilot being a ground course angle TKsol, a deceleration rate Ga for the forward speed Va of the aircraft, a flight path angle P, and a heading Ψ. A second mode of operation makes it possible, when the longitudinal speed UX is less than a second threshold speed Vthresh2, to engage hovering flight at the stop position S while maintaining heading, the flight setpoints being the longitudinal speed UX, a lateral speed VY, a vertical speed WZ, and the heading Ψ, the speeds UX, VY, and WZ being reduced progressively to zero speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.