Method and device for determining a state of a rotor of a rotary-wing aircraft
Patent Information
- Application Number
- DE602021036973
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2020-05-20
- Filing Date
- 2021-03-25
- Publication Date
- 2025-08-27
- Estimated Expiration
- 2041-03-25
AI Technical Summary
Existing methods for measuring the state of a rotorcraft rotor, including longitudinal and lateral cyclic pitches and cone angles, are complex, prone to errors, and inaccurate due to reliance on multiple sensors and neglect of aerodynamic forces.
A method utilizing direct measurements from a gyrometer, such as MEMS type, attached to a rotor blade to determine angular velocity components, processed through Fourier series analysis to estimate cyclic pitches and cone angles relative to the TPP disk plane, eliminating the need for additional sensors and reducing bias.
Provides accurate and robust measurement of rotor states by eliminating sensor bias and errors, allowing precise estimation of cyclic pitches and cone angles, and enabling improved control and safety features like automatic takeoff.