Biomimetic flight and propulsion mechanisms

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• OKTAY FIRAT TANRISEVER

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• ULUÇ SARANLI

Research over the past several decades has elucidated some of the mechanisms behind high speed, highly efficient, and robust locomotion in insects such as cockroaches. Roboticists have used this information to create biologically inspired machines capable of running, jumping, and climbing robustly over a variety of te…

• ONUR ÖZCAN

The thrust and/or propulsive efficiency of a single flapping airfoil is-maximized by using a numerical optimization method based on the steepest ascent. The flapping motion of the airfoil is described by a combined sinusoidal plunge and pitching motion. Optimization parameters are taken to be the amplitudes of the plu…

• MUSTAFA KAYA

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• ONUR PEKCAN

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• OĞUZHAN HASANÇEBİ

Even for the stationary airfoils, due to the boundary and shear layer interactions of upper and lower surface of the airfoils, alternating vortex patterns form and the flow becomes time dependent. In the current study, the unsteady behavior of the flow around a symmetric airfoil is considered as incidence angle increa…

We present the design, modeling and preliminary control of RHex, an autonomous dynamically stable hexapod possessing merely six actuated degrees of freedom (at the hip attachment of each leg). Our design emphasizes mechanical simplicity as well as power and computational autonomy, critical components for legged roboti…

The animation show the three-dimensional vorticity field around a free-swimming hydromedusa Aequorea victoria (crystal jellyfish).

• MEHMET ŞAHİN

The thrust-generating mechanism of a prolate hydromedusa Sarsia tubulosa and an oblate hydromedusa Aequorea victoria was investigated by solving the incompressible Navier-Stokes equations in the swirl-free cylindrical coordinates. The calculations clearly show the vortex dynamics related to the thrust-generating mecha…

• MEHMET ŞAHİN

Most legged vertebrates use flexible spines and supporting muscles to provide auxiliary power and dexterity for dynamic behaviors, resulting in higher speeds and additional maneuverability during locomotion. However, most existing legged robots capable of dynamic locomotion incorporate only a single rigid trunk with a…

The effects of trailing-edge shape on the wake and propulsive performance of a pitching panel are examined. Concave trailing edges delay the natural vortex bending and compression of the wake, whereas convex trailing edges promote wake compression. The trailing edge alters performance significantly.

• UTKU ŞENTÜRK