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Smart Helicopter Rotors

Name: Smart Helicopter Rotors
Brand: Springer International Publishing AG
SKU: 09523647
Price: 568.64 RON
Availability: InStock
Author: Ranjan Ganguli
ISBN: 9783319247663

Optimization and Piezoelectric Vibration Control

Ranjan Ganguli

Dipali Thakkar

Sathyamangalam Ramanarayanan Viswamurthy

Limba

engleză

Carte Copertă tare

Codul Libristo: 09523647

Editura Springer International Publishing AG, decembrie 2015

Exploiting the piezoelectric materials tom minimize vibration in rotor-blade actuators, this book de... Descrierea completă

Codul Libristo: 09523647

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568.64 lei

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Exploiting the piezoelectric materials tom minimize vibration in rotor-blade actuators, this book demonstrates the potential of smart helicopter rotors to achieve the smoothness of ride associated with jet-engined, fixed-wing aircraft. Vibration control is effected using the concepts of trailing-edge flaps and active-twist. The authors' optimization-based approach shows the advantage of multiple trailing-edge flaps and algorithms for full-authority control of dual trailing-edge-flap actuators are presented. Hysteresis nonlinearity in piezoelectric stack actuators is highlighted and compensated for by use of another algorithm. The idea of response surfaces provides for optimal placement of trailing-edge flaps.§The concept of active twist involves the employment of piezoelectrically induced shear actuation in rotating beams. Shear is then demonstrated for a thin-walled aerofoil-section rotor blade under feedback-control vibration minimization. Active twist is shown to be significant in reducing vibration caused by dynamic stall. The exposition of ideas, materials and algorithms in this monograph is supported by extensive reporting of results from numerical simulations of smart helicopter rotors.§This monograph will be a valuable source of reference for researchers and engineers with backgrounds in aerospace, mechananical and electrical engineering interested in smart materials and vibration control.