Development and testing of a 3 DOF tandem flapping wing mechanism

Mutlu, Talha
Scope of the thesis is to develop a tandem flapping wing mechanism, capable of mimicking the insect flight, in order to investigate the 3-D complex nature of the flow around the flapping wings. Thus, valuable data about the unsteady aerodynamics of such flow can be obtained in order to provide necessary knowledge for development of future Micro Air Vehicles (MAVs). The mechanism is equipped with a state of art multi axial force and torque sensor. By placing the sensor to the root chord of the wing, any force and moment that are exerted to wing can be measured in real-time. In order to design the mechanism, wing trajectories of various insect and birds are investigated. Moreover; different flapping MAVs and flapping wing test setups are examined to provide a better understanding of existing flapping wing technology. By doing so, requirements for a new mechanism are decided. The mechanism has a robotic wrist, enabling the rotation in three axis, which are driven by three motor for each wing. A custom made micro controller with embedded software ‘Wing-Sim’ governs the motor drivers, sensors and data transfer between the main computer and wings. Furthermore; different wing trajectories can be performed and logged by Wing-Sim. During the vi experiments a bio-inspired wing measuring 24 cm span and 8 cm chord, with 3 mm thickness flat plate airfoils are used. Calibration and validation test of the system are completed and presented in the results. .


Design and testing of a four-bar flapping wing mechanism
Şenol, Münire Gülay; Kurtuluş, Dilek Funda; Department of Aerospace Engineering (2016)
The purpose of this thesis is to design and test a flapping wing four-bar mechanism. A four-bar linkage system kinematic analysis is introduced for flapping wing motion. The type of mechanism is double rocker and the motion has a single-degree of freedom. Four-bar mechanism is activated by a servo motor which is driven by microcontroller. From the design of four bar mechanism, two different simulations result two different flapping angles and flapping frequencies. This thesis provides a detailed description...
Experimental analysis of 3-D sweeping wings
Çakır, Hasan; Kurtuluş, Dilek Funda; Department of Aerospace Engineering (2015)
The aim of this thesis is to modify the mechanism, which is capable of mimicking the insect flight and developed previously by the Aerospace Engineering Department, and to measure the forces and moments of three types of flapping wings fixed to this mechanism. The flapping wing design is a new research topic, comparably young area and can be the future for micro unmanned air vehicles. Time varying force and moment data obtained from the experiments conducted in water as part of this thesis can be used to de...
Aeroservoelastic analysis and robust controller synthesis for flutter suppression of air vehicle control actuation systems
Akmeşe, Alper; Platin, Bülent Emre; Department of Mechanical Engineering (2006)
Flutter is one of the most important phenomena in which aerodynamic surfaces become unstable in certain flight conditions. Since the 1930’s many studies were conducted in the areas of flutter prediction in design stage, research of design methods for flutter prevention, derivation and confirmation of flutter flight envelopes via tests, and in similar subjects for aircraft wings. With the use of controllers in 1960’s, studies on the active flutter suppression began. First the classical controllers were used....
Experimental investigation of 3D flow field around a Flapping wing making figure-of-eight motion in hover Using PIV technique
Ersöz, İrem; Alemdaroğlu, Hüseyin Nafiz; Department of Aerospace Engineering (2014)
This thesis presents the results of experimental investigation of vortex formation around a three dimensional flapping wing making figure-of-eight motion in hovering flight at low Reynolds numbers. These results are compared with those obtained from previous computational and experimental studies of the same flapping motions. Analysis of vortex formations around the three dimensional flapping wing and the investigations of the effect of different parameters such as the amplitude of motion in y direction and...
Aerodynamic and inertial characterization of a generic flapping wing mechanism
Beker , Can; Kurtuluş, Dilek Funda; Department of Aerospace Engineering (2020-10)
The primary focus of this thesis is to conduct an aerodynamical and inertial characterization of a generic flapping wing mechanism. Firstly, a CAD model of the utilized flapping mechanism is created, and a custom test platform is developed for the performed flapping-wing test sequence. Experimental validation of the modal analysis performed for the developed test platform is presented. In the inertial force characterization study, the standalone effect of the inertial forces that occur during flapping motio...
Citation Formats
T. Mutlu, “Development and testing of a 3 DOF tandem flapping wing mechanism,” M.S. - Master of Science, Middle East Technical University, 2014.