An Aeroelastic Analysis Of Helicopter Rotor Blades Incorporating Piezoelectric Fiber Composite Twist Actuation
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Author | : National Aeronautics and Space Adm Nasa |
Publisher | : Independently Published |
Total Pages | : 72 |
Release | : 2018-11-02 |
Genre | : Science |
ISBN | : 9781730726682 |
A simple aeroelastic analysis of a helicopter rotor blade incorporating embedded piezoelectric fiber composite, interdigitated electrode blade twist actuators is described. The analysis consist of a linear torsion and flapwise bending model coupled with a nonlinear ONERA based unsteady aerodynamics model. A modified Galerkin procedure is performed upon the rotor blade partial differential equations of motion to develop a system of ordinary differential equations suitable for numerical integration. The twist actuation responses for three conceptual full-scale blade designs with realistic constraints on blade mass are numerically evaluated using the analysis. Numerical results indicate that useful amplitudes of nonresonant elastic twist, on the order of one to two degrees, are achievable under one-g hovering flight conditions for interdigitated electrode poling configurations. Twist actuation for the interdigitated electrode blades is also compared with the twist actuation of a conventionally poled piezoelectric fiber composite blade. Elastic twist produced using the interdigitated electrode actuators was found to be four to five times larger than that obtained with the conventionally poled actuators. Wilkie, W. Keats and Park, K. C. Langley Research Center...
Author | : |
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Total Pages | : 68 |
Release | : 1996 |
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Publisher | : DIANE Publishing |
Total Pages | : 115 |
Release | : 2001 |
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ISBN | : 1428995803 |
Author | : Nesbitt Hagood IV |
Publisher | : CRC Press |
Total Pages | : 822 |
Release | : 1999-03-11 |
Genre | : Technology & Engineering |
ISBN | : 9781566767552 |
Author | : |
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Total Pages | : 180 |
Release | : 1997 |
Genre | : Aeronautics |
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Author | : American Society of Mechanical Engineers. Aerospace Division |
Publisher | : |
Total Pages | : 834 |
Release | : 1996 |
Genre | : Technology & Engineering |
ISBN | : |
Contains papers from three symposia at the November 1996 congress. Sections on structures and materials for aerospace vehicles, adaptive structures and material systems, and micro-electro-mechanical systems include section introductions, and present the latest research.
Author | : Ahmed Khairy Noor |
Publisher | : AIAA |
Total Pages | : 472 |
Release | : 2000 |
Genre | : Airframes |
ISBN | : 9781600864407 |
Author | : |
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Total Pages | : 536 |
Release | : 1999 |
Genre | : Airframes |
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Total Pages | : |
Release | : 1998-07 |
Genre | : Government publications |
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Author | : Pascual Marqués |
Publisher | : John Wiley & Sons |
Total Pages | : 799 |
Release | : 2017-07-11 |
Genre | : Technology & Engineering |
ISBN | : 1118928687 |
Comprehensively covers emerging aerospace technologies Advanced UAV aerodynamics, flight stability and control: Novel concepts, theory and applications presents emerging aerospace technologies in the rapidly growing field of unmanned aircraft engineering. Leading scientists, researchers and inventors describe the findings and innovations accomplished in current research programs and industry applications throughout the world. Topics included cover a wide range of new aerodynamics concepts and their applications for real world fixed-wing (airplanes), rotary wing (helicopter) and quad-rotor aircraft. The book begins with two introductory chapters that address fundamental principles of aerodynamics and flight stability and form a knowledge base for the student of Aerospace Engineering. The book then covers aerodynamics of fixed wing, rotary wing and hybrid unmanned aircraft, before introducing aspects of aircraft flight stability and control. Key features: Sound technical level and inclusion of high-quality experimental and numerical data. Direct application of the aerodynamic technologies and flight stability and control principles described in the book in the development of real-world novel unmanned aircraft concepts. Written by world-class academics, engineers, researchers and inventors from prestigious institutions and industry. The book provides up-to-date information in the field of Aerospace Engineering for university students and lecturers, aerodynamics researchers, aerospace engineers, aircraft designers and manufacturers.