"The aim of the present work is the presentation and application of a methodology for the iden-. tification of multi-cyclic higher harmonic actuation of blade pitch motion suited for alleviation. of BVI loads, and hence of corresponding noise annoyance generated by helicopter main ro-. tors in low-speed descent flight. The blade pitch actuation is defined by a feedback control. law obtained through an optimal control approach. First, strong BVI phenomena occurring in. the specific flight condition are simulated as equivalent two-dimensional, multi-vortex, parallel. BVI problems, and then a local controller methodology is applied for the efficient identification. of the closed-loop control algorithm. This control methodology is validated by application to. a realistic helicopter main rotor in descent flight; results concerning its capability to alleviate. blade loads and emitted noise are presented and discussed.. "

Modini, S., Graziani, G., Bernardini, G., Gennaretti, M. (2013). Blade Vortex Interaction 2D Modelling for Rotor Noise Control Synthesis. In Proceedings of XXII AIDAA Conference.

Blade Vortex Interaction 2D Modelling for Rotor Noise Control Synthesis

BERNARDINI, Giovanni;GENNARETTI, MASSIMO
2013-01-01

Abstract

"The aim of the present work is the presentation and application of a methodology for the iden-. tification of multi-cyclic higher harmonic actuation of blade pitch motion suited for alleviation. of BVI loads, and hence of corresponding noise annoyance generated by helicopter main ro-. tors in low-speed descent flight. The blade pitch actuation is defined by a feedback control. law obtained through an optimal control approach. First, strong BVI phenomena occurring in. the specific flight condition are simulated as equivalent two-dimensional, multi-vortex, parallel. BVI problems, and then a local controller methodology is applied for the efficient identification. of the closed-loop control algorithm. This control methodology is validated by application to. a realistic helicopter main rotor in descent flight; results concerning its capability to alleviate. blade loads and emitted noise are presented and discussed.. "
9788890648427
Modini, S., Graziani, G., Bernardini, G., Gennaretti, M. (2013). Blade Vortex Interaction 2D Modelling for Rotor Noise Control Synthesis. In Proceedings of XXII AIDAA Conference.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/267801
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