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Aeromechanical Stability Augmentation Through Semi-Active Control

Agarwal:Aeromechanical Stability Augmen
Autor: Sandeep Agarwal
Verfügbarkeit: Auf Lager.
Artikelnummer: 1306619
ISBN / EAN: 9783639175325

Verfügbarkeit: sofort lieferbar

Inkl. MwSt. , zzgl. Versandkosten


Helicopter rotors have traditionally been equipped§with passive dampers for aeromechanical stability. §These passive systems have fixed characteristics, and§add to mechanical complexity and high maintenance§cost. Furthermore, they are unable to change to§compensate for an unexpected loading trends as§typically encountered by a rotary wing vehicle. §Semi-active control strategies are dissipative in§nature, inherently stable, and require a little§energy to operate. Hence, they appear to be§particularly promising in addressing a§number of the challenges facing active control§strategies, in that the devices are low power,§fail-safe, and reliable. In this study, author§investigates friction based semi-active approach for§ground resonance stability augmentation and proposes§novel strategies for the adaptive, selective and§individual damping control. The effectiveness of§these control strategies is validated on a§comprehensive multibody system model of an army§helicopter. The analytical study is supplemented with§a novel design of a semi-active lead lag damper and§various aspects of its design in application to§commercial rotors are discussed.


Autor Verlag VDM Verlag Dr. Müller
ISBN / EAN 9783639175325 Bindung Taschenbuch

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