System and method for protection against vortex ring state
US12054244B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2023 |
| Grant date | Aug 6, 2024 |
| Priority date | — |
| Expiry date | Feb 8, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D2109/25
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system and method for protecting a rotorcraft from entering a vortex ring state, the method including monitoring a vertical speed of a rotorcraft, comparing the vertical speed to a vertical speed safety threshold, and performing vortex ring state (VRS) avoidance in response to the vertical speed exceeding the vertical speed safety threshold. The performing the VRS avoidance includes determining a power margin available from one or more engines of the rotorcraft, limiting the vertical speed of the rotorcraft in response to the power margin exceeding a threshold, and increasing a forward airspeed of the rotorcraft in response to the power margin not exceeding the threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.