Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"wing performance"”.
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Effect of Slot Span on Wing Performance
… aerodynamic properties of a three-dimensional wing that features a partial to full span fixed slot. Fixed slots have been thoroughly studied in the past with regards to their operation and the relation between slot geometry and wing performance. There have also been many studies on the …
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Measurements of Wings at Very Low Reynolds Numbers
… low Reynolds number aerodynamics is a rapidly growing field of interest, especially in regard to the design and development of micro- and nano-air vehicles. In the work culminating in this thesis, force measurement apparatuses were designed and prototyped to measure wing performance at very low …
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Prediction and experimental evaluation of planar wing spanloads for minimum drag
Optimum wing spanloads were evaluated by comparing wing performance values from theoretical predictions and experimental wind-tunnel measurements. The optimum spanloads were found using a Lagrange multiplier optimization method. They were designed with a prescribed wing-root bending moment …
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The effect of free stream disturbances and control surface deflections on the performance of the Wortmann airfoil at low Reynolds numbers
A wing with a Wortmann FX-63-137-ESM airfoil section has been used to study some unique problems encountered in wing aerodynamics in the range of Reynolds numbers between 50,000 and 500,000. The wind-tunnel testing conducted in the 6'x 6' Stability tunnel included strain-gauge data, pressure data, …
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The aerodynamic and structural study of flapping wing vehicles
… and structural study carried out on flapping wings and flapping vehicles. Theoretical and experimental investigation of aerodynamic forces acting on flapping wings in simple harmonic oscillations is undertaken in order to help conduct and optimize the aerodynamic and structural design of …
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Concept Study of a High-Speed, Vertical Take-Off and Landing Aircraft
… and landing (VTOL) with an integral, circular wing for high-speed flight. Tests were conducted to generate basic aerodynamic characteristics of the DiscRotor in hover and in fixed-wing flight. To assess the DiscRotor during hover, small scale tests were conducted on a 3ft diameter rotor without …
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The development of a novel air bearing device for aerodynamic flow control
… been considerable effort devoted to improving wing performance. Many techniques have been developed to reduce drag and improve the lift of aerofoil. This research introduces a new novel method, a so called "air bearing device" (ABD) which provides both drag reduction and enhancement of …
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Rotor Wakes; Formations, Interactions, and Design
… A rotor-test stand was used to monitor rotor performance throughout these experimental campaigns. The current program considers the swirl produced by three different propulsive devices: a ducted fan device with standard stators, a ducted fan device with swirling stators, and an open propeller. …