Prediction of drag force on gimbal system via balance technique and wake integration method

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Date

2014

Author

Yeşilyurt, Emrah

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This thesis study examines the drag force exerted on a mini gimbal system through two methods of drag prediction. Wind tunnel experiments are performed with the real gimbal model since it is small enough. Drag force is measured by the balance technique using a load-cell, consisting of a metal beam and strain gauges adhered to it, which is designed and produced. For various Reynolds numbers drag force exerted on the model is measured. Results are essential since there is a restricted literature about it due to its military feature. Also drag force is estimated for various Reynolds numbers by wake integration method which is based on the conservation of linear momentum over a control volume and related measurements in the wind tunnel. Results obtained by two methods are compared and discussed for optimum selection of the control volume for the second method used. Furthermore, flow over the gimbal is examined and some flow visuals are obtained in a qualitative manner.

Subject Keywords

Drag (Aerodynamics)., Wind tunnel testing., Fluid mechanics., Wakes (Fluid Dynamics).

URI

http://etd.lib.metu.edu.tr/upload/12616837/index.pdf
https://hdl.handle.net/11511/23424

Collections

Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

E. Yeşilyurt, “Prediction of drag force on gimbal system via balance technique and wake integration method,” M.S. - Master of Science, Middle East Technical University, 2014.