Rotorcraft-mounted rotor blade collision warning system and method for alerting a rotorcraft crew member of a potential collision of a rotor blade
US11345483B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2019 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Apr 10, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D2203/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method is provided for alerting a rotorcraft crew member of a potential collision of a rotor blade of the rotorcraft having a rotor shaft and a rotor azimuth. The method comprises estimating a total rotor flapping value associated with the rotor blade during an operating condition of the rotorcraft. The estimated total rotor flapping value is relative to the rotor shaft as a function of the rotor azimuth. The method also comprises comparing the estimated total rotor flapping value to a rotor flapping limit value during the operating condition of the rotorcraft. The method further comprises sending a warning signal to a warning device when the estimated total rotor flapping value lies outside of the rotor flapping limit value to alert the rotorcraft crew member of a potential collision of the rotor blade of the rotorcraft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.