Numerical and experimental analysis of a piezoelectric flat plate in flapping motion

Download
index.pdf
2014
Harputlu, Özgür
Show full item record
258
views
135
downloads
The technology of unmanned aerial vehicles (UAV) has a rapid improvement and their use is increasing day by day for military and civilian missions. Developments in production technology enable the fabrication of micro aerial vehicles. Flapping wing systems have an important place among UAVs. These vehicles are superior to fixed wing aircrafts with their high maneuverability and hover capabilities and they can successfully perform many missions in which the fixed aircrafts are insufficient. Developments in material technology provided the use of smart materials and their integration to the engineering applications. Piezoelectric materials which possess the property of electromechanical coupling can be classified as smart materials and they are widely used in aerial vehicle applications. As an example to this fact, piezoelectric actuators which are exceptional choices to drive flapping wing micro air vehicles may be highlighted. The experiments are performed for different operating signal types and frequencies. The displacement fields obtained from the experimental analysis are used as inputs to the numerical analysis. The numerical simulation is performed using the structural analysis and aerodynamic flow analysis components of ANSYS software. The elastic deformations are inserted into the structural system and linked to the fluid flow system. Flow domain around the beam in flapping is then simulated. An analytical model is established to obtain elastic curve of the bimorph piezoelectric beam under actuation loading. The objective of this study is to analyze piezoelectric flat plate in flapping motion by experimental and numerical methods.
Flaps (Airplanes)., Piezoelectric materials., Drone aircraft., Micro air vehicles., Vehicles, Remotely piloted.
http://etd.lib.metu.edu.tr/upload/12616849/index.pdf
https://hdl.handle.net/11511/23315
Graduate School of Natural and Applied Sciences, Thesis

Suggestions

Mission planning for unmanned aerial vehicle (UAV) teams
Yılgın, Serdar; Polat, Faruk; Department of Computer Engineering (2014)
In recent years, use of Unmanned Aerial Vehicle (UAV) especially for reconnaissance and combat missions has become very popular in worldwide. There is no onboard human operator exists for UAVs and they are generally controlled by remote human operators. Depending on the operational environment; sometimes it becomes nearly impossible to provide optimal or an acceptable UAV – target assignment and scheduling, satisfying the constraints required to accomplish the mission, for the operators in control center. I...
Numerical analysis of 3D model flapping flat plate
Dizman, Begüm; Kurtuluş, Dilek Funda; Department of Aerospace Engineering (2016)
Flapping Micro Air Vehicles (MAV) studies gain an importance recently and in the future they will be used in civil and military applications in a widespread manner. Wing mechanism of MAV’s is similar to birds’ and insects’ wing motion and is highly maneuverable. This flapping motion provides them fly in low Reynolds Number. In order to understand successful flight of MAVs , time dependent aerodynamic performance must be investigated in detail. This study includes investigation of 3D sweeping of flat plate n...
Task assignment and scheduling in UAV mission planning with multiple constraints
Semiz, Fatih; Polat, Faruk; Department of Computer Engineering (2015)
In the recent years, unmanned aerial vehicles (UAVs) have started to be utilized as the first choice for high risk and long duration tasks, because UAVs are cheaper; they are hard to be noticed and they can perform long duration missions. Furthermore, the utilization of UAVs ensures to reduce the risk to the human life. Examples of this kind of missions includes signal collection, surveillance and reconnaissance and combat support missions. It is valuable to develop a fully autonomous UAV fleet to perform t...
Numerical investigation of flow control strategies on delta wings
Yıldırım, Alper; Sert, Cüneyt; Department of Mechanical Engineering (2019)
The use of Unmanned Aerial Vehicles (UAV), Unmanned Combat Aerial Vehicles (UCAV) and Micro Aerial Vehicles (MAV) have been increasing in recent years. The researchers aim to understand the complex flow structure around low sweep angle delta wings, which are frequently used in such vehicles.They are also interested in controlling the flight performance of these vehicles by various active and passive means. This study involves numerical simulations of flows around a delta wing with a sweep angle of 45oat hig...
Computational Investigation of Flow Through a Louvered Inlet Configuration
Tuncer, İsmail Hakkı (American Institute of Aeronautics and Astronautics (AIAA), 2002-9)
The aerodynamic analysis of subsonic lifting body concepts for future unmanned air vehicles and missiles has been an active research held in recent years. A lifting body combines three emerging technologies, namely, lifting body, thrust vector control,and flush louvered inlet. The flush louvered inlet configuration requires the flow to turn 360 deg in the plenum chamber before entering the engine. The pressure losses and flow distortions experienced in the plenum chamber are serious concerns. In the analysi...
Citation Formats
Ö. Harputlu, “Numerical and experimental analysis of a piezoelectric flat plate in flapping motion,” M.S. - Master of Science, Middle East Technical University, 2014.
METU IIS - Integrated Information Service open@metu.edu.tr