A THEORETICAL AND EXPERIMENTAL ANALYSIS OF THE AERODYNAMIC RESPONSE OF A PIEZOCOMPOSITE ORNITHOPTER WING

Mohammad Katibeh, Onur Bilgen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The mechanism-free ornithopter concept, also referred to as the solid-state ornithopter concept, has been previously proposed to utilize piezocomposite actuators to mimic flapping motion of an avian. In this concept, a set of Macro-Fiber Composite actuators are attached to a wing-shaped carbon fiber substrate, and the heaving and pitching type motion are generated through the strain induced by the actuators. In the proposed concepts, a large number of geometric and structural parameters determine the dynamic behavior and performance. Therefore, it is necessary to conduct multi-disciplinary design optimization to obtain the optimal configuration of the model parameters to achieve a feasible level of aerodynamic performance. The study of the fundamental aerodynamic characteristics of the solid-state ornithopter can be conducted using high-fidelity two-way fluid-structure interaction models; however, due to computational limits, these models are often not feasible for evaluating a large number of cases. It is possible to replace high-fidelity models with an approximate solution. In this paper, a low-fidelity model based on Theodorsen's solution for unsteady two-dimensional airfoils under harmonic motion is developed. The heaving and pitching motion of the wing required for the approximate solution are obtained using a finite element model for the piezocomposite wing under harmonic motion. The lift force and pitching moment are obtained using the approximate solution by discretization of the wing. Furthermore, wind tunnel experiments are conducted on the solid-state ornithopter wing prototype to investigate the aerodynamic response. The experimental results are compared with the simulation results to evaluate the accuracy of the proposed model. The approximate solution has limitations due to neglecting the three-dimensional flow over the wing and the effects of aerodynamic loads on the heaving and pitching motions.

Original languageEnglish (US)
Title of host publicationProceedings of ASME 2023 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2023
PublisherAmerican Society of Mechanical Engineers
ISBN (Electronic)9780791887523
DOIs
StatePublished - 2023
Externally publishedYes
Event16th Annual ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2023 - Austin, United States
Duration: Sep 11 2023Sep 13 2023

Publication series

NameProceedings of ASME 2023 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2023

Conference

Conference16th Annual ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2023
Country/TerritoryUnited States
CityAustin
Period9/11/239/13/23

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Civil and Structural Engineering
  • Mechanics of Materials

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