Detailed measurements of dynamic stability derivatives under roll oscillations for standard dynamic model in Ankara wind tunnel

Nacaklı, Yavuz


Experimental evaluation of “ball rubber bearings” at different temperatures
Erdal, Serkan; Caner, Alp; Department of Civil Engineering (2010)
Rubber material used in seismic isolation systems has a tendency to stiffen in cold climate conditions. Structural responses of rubber based seismic isolation bearings are known to be temperature dependent. The main focus of this research is to investigate the temperature related behavior shifts at a certain type of a rubber based seismic isolation system. This research is a complementary study to a recent experimental study on a newly developed seismic isolator called “Ball Rubber Bearing” (BRB). BRBs can ...
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Hipermedya İle Öğrenmede Kişisel Farklılıklar: Bilişsel Stillerin, Bilgisayar Kullanım Yeterliği ve Ön Alan Bilgisi Düzeylerinin Öğrenme Stratejileri Üzerine Etkisi - Bu çalışma, öğrencilerin, bilişsel stilleri, bilgisayar kullanımı yeterlik düzeyleri ve ön alan bilgilerinin eğitim amaçlı bir hipermedya programındaki öğrenme stratejileri üzerindeki etkilerini incelemektedir. Bu amaçla, Web destekli bir öğrenme ortamındaki 111 öğrenciden 16 sı bilişsel stilleri, bilgisayar kullanımı yeterlik düzeyleri ve ön ...
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Bilyaz, Serhat; Tarı, İlker; Department of Mechanical Engineering (2015)
Various heat transfer fluids and thermal storage materials are considered for concentrating solar power systems to improve the storage capability of the system which compensates the fluctuating behavior of the solar resources. Solid particles can be a good alternative since they have high sensible heat capacity. In addition, they are cheap, environmentally benign and chemically and mechanically stable at high temperatures. In this thesis, hydrodynamics of circulating fluidized bed solar receiver was numeric...
Predicting gold and silver spot prices in Turkey
Deveci, Duygu; Yıldırım Kasap, Dilem; Department of Economics (2013)
The major aim of this study is to determine the best models describing the price movements of gold and silver and generate further reliable forecasts using appropriate macroeconomic and financial indicators. In that sense, modeling and forecasting analysis is conducted under the framework of a benchmark linear model-ARIMAX and a probit model using monthly data for the period between January 2002 and November 2012. To determine the best models, a variable selection procedure is implemented through a search a...
Quantitative electrostatic force measurement in AFM
JEFFERY, Steve; Oral, Ahmet; Pethica, John B. (2000-04-02)
We describe a method for measuring forces in the atomic force microscope (AFM), in which a small amplitude oscillation(similar to 1 Angstrom(p-p)) is applied to a stiff(similar to 40 N/m) cantilever below its first resonant frequency, and the force gradient is measured directly as a function of separation. We have used this instrument to measure electrostatic forces by applying an ac voltage between the tip and the sample, and observed a variation in contact potential difference with separation. We also sho...
Citation Formats
Y. Nacaklı, “Detailed measurements of dynamic stability derivatives under roll oscillations for standard dynamic model in Ankara wind tunnel,” M.S. - Master of Science, Middle East Technical University, 2003.