Helicopter trim with flap-lag-torsion and stall by an optimized controller
| Autor: | Mark V. Fulton, Mnaouar Chouchane, David A. Peters |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Applied Mathematics
Blade pitch Aerospace Engineering Torsion (mechanics) Stall (fluid mechanics) Aerodynamics Flight control surfaces Optimal control law.invention Space and Planetary Science Control and Systems Engineering law Control theory Autopilot Electrical and Electronic Engineering Helicopter rotor Mathematics |
| Zdroj: | Journal of Guidance, Control, and Dynamics. 13:824-834 |
| ISSN: | 1533-3884 0731-5090 |
| DOI: | 10.2514/3.25408 |
| Popis: | An autopilot is applied to helicopter rotor flap-lag-torsion equations to obtain the control settings for a trimmed flight condition. The rotor aerodynamic description includes a stage-space dynamic stall model for lift and for pitching moments. Thus, the rotor is trimmed for flight conditions in which significant stall and torsional deformations are present. The autopilot is extended to Q-bladed rotors by a series of time-delay terms. As a result, the optimum gains and time constants depend upon the number of blades as well as upon the torsional stiffness. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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