Solid State Adaptive Rotor Using Postbuckled Precompressed, Bending-Twist Coupled Piezoelectric Actuator Elements
Joint Authors
Barrett, Ronald M.
Barnhart, Ryan
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-04-05
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
This paper is centered on a new actuation mechanism which is integrated on a solid state rotor.
This paper outlines the application of such a system via a Post-Buckled Precompression (PBP) technique at the end of a twist-active piezoelectric rotor blade actuator.
The basic performance of the system is handily modeled by using laminated plate theory techniques.
A dual cantilevered spring system was used to increasingly null the passive stiffness of the root actuator along the feathering axis of the rotor blade.
As the precompression levels were increased, it was shown that corresponding blade pitch levels also increased.
The PBP cantilever spring system was designed so as to provide a high level of stabilizing pitch-flap coupling and inherent resistance to rotor propeller moments.
Experimental testing showed pitch deflections increasing from just 8° peak-to-peak deflections at 650 V/mm field strength to more than 26° at the same field strength with design precompression levels.
Dynamic testing showed the corner frequency of the linear system coming down from 63 Hz (3.8/rev) to 53 Hz (3.2/rev).
Thrust coefficients manipulation levels were shown to increase from 0.01 to 0.028 with increasing precompression levels.
The paper concludes with an overall assessment of the actuator design.
American Psychological Association (APA)
Barrett, Ronald M.& Barnhart, Ryan. 2012. Solid State Adaptive Rotor Using Postbuckled Precompressed, Bending-Twist Coupled Piezoelectric Actuator Elements. Smart Materials Research،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-501794
Modern Language Association (MLA)
Barrett, Ronald M.& Barnhart, Ryan. Solid State Adaptive Rotor Using Postbuckled Precompressed, Bending-Twist Coupled Piezoelectric Actuator Elements. Smart Materials Research No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-501794
American Medical Association (AMA)
Barrett, Ronald M.& Barnhart, Ryan. Solid State Adaptive Rotor Using Postbuckled Precompressed, Bending-Twist Coupled Piezoelectric Actuator Elements. Smart Materials Research. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-501794
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-501794