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 20 of 330 for “"swept"”.
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An investigation of the aerodynamic characteristics of a combined swept back-swept forward wing configuration
Thesis (B.S.) Massachusetts Institute of Technology. Dept. of Aeronautical Engineering, 1953.
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Theory and algorithms for swept manifold intersections
… of interest towards geometric objects called swept volumes. Besides their great applicability in various practical areas, the mere geometry and topology of these entities make them a perfect testbed for novel approaches aimed at analyzing and representing geometric objects. The structure of …
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Small-scale Wind Energy Portable Turbine (SWEPT)
… small-scale wind energy portable turbine (SWEPT) operating in very low wind speed range of 1 m/s-5 m/s with extremely high power coefficient. In comparison to the published literature, SWEPT is one of the most efficient wind turbines at the small scale and very low wind speeds with the …
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Below-Rated Control of Swept-Blade Wind Turbines
… variable speed, power capture when using swept-blades. When operating in the variable speed region, the turbine’s torque is proportional to the square of the generator speed, and k is the proportionality constant (T = kΩ 2 ). Initial studies indicated that the value of k needed to be …
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Multivariable control of a forward swept wing aircraft
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1986.
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Swept Line Electron Beam Annealing of Ion-Implanted Semiconductors
The capabilities of a Swept Line Electron Beam (SLEB) in annealing ion-implanted semiconductors are examined. This technique employs a fixed geometry, line-shaped electron beam through which implanted samples are mechanically scanned. In general, this technique can produce annealing results …
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Chemical Sensing as a Utility using Swept-Source Raman Spectroscopy
… utility service model for chemical sensing using Swept Source-Raman Spectroscopy (SSRS) that addresses these challenges. First, we introduce the SSRS fiber-probe that allows to measure Raman spectra with a single-point detector and only a few milliwatts of tunable laser excitation. We validate the …
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Aeroelastic properties of straight and forward swept graphite/epoxy wings
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1983.
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Unconventional Swept Rotor Design using Open Vehicle Sketch Pad (OpenVSP)
… led to the emergence of several unconventional swept rotor designs that can improve aerodynamic and aeroacoustic performance. The present thesis aims to investigate the impact of achieving a balanced sweep distribution across a rotor blade and how it affects aerodynamic performance. The study …
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Crossflow stability and transition experiments in a swept-wing flow
… of crossflow instability and transition on a 45° swept wing is conducted in the Arizona State University Unsteady Wind Tunnel. The stationary-vortex pattern and transition location are visualized using both sublimating-chemical and liquid-crystal coatings. Extensive hot-wire measurements are …
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The Development and Control of Axial Vortices over Swept Wings
The natural unsteadiness in the post-breakdown flowfield of a 75° sweep delta wing at 40° angle of attack was studied with dual and single point hot-wire anemometry in the Engineering Science and Mechanics (ESM) Wind Tunnel at a Reynolds number Re = 210,000. Data were taken in five crossflow planes …
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Swept source optical coherence microscopy for pathological assessment of cancerous tissues
… pushed the development into the direction of swept source OCT technologies, and development of the OCM technology is likely to follow this path. This thesis describes construction, characterization and preliminary imaging results of a swept source OCM (SS-OCM) system utilizing a novel light …
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Wavelength swept spectrally encoded confocal microscopy for biological and clinical applications
… through the development of a novel wavelength swept laser which simultaneously provided high output power (> 10mrW), narrow linewidth (10GHz), broad wavelength tuning (80 nm centered at 1310 nm) and fast repetition rates (up to 16,000 Hz), while being compact and environmentally stable. Imaging …
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Integrated aerodynamic-structural design of a subsonic, forward- swept transport wing
… design optimization of a subsonic, forward-swept transport wing. A modular sensitivity approach for calculating the cross-sensitivity derivatives is employed. These derivatives are then used to guide the optimization process. The optimization process employed is an approximate technique due …
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Swept Neutral Pressure Instrument (SNeuPI): Investigating Gravity Waves In The Ionosphere
A swept neutral pressure instrument(SNeuPI) is used to study the effect of gravity waves on the composition of the ionosphere. When mounted on a nanosatellite in the low earth orbit, changes in atmospheric pressure due to gravity waves are measured as the changes in neutral gas density. This …
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Radiation Damage Analysis of the Swept Charge Device for the C1XS Instrument
… with ensuring high energy resolution from the swept charge devices (SCDs), essentially a non-pixellated version of the charge coupled device (CCD), for use in the Chandrayaan-1 X-ray Spectrometer (C1XS). C1XS, launched onboard Chandrayaan-1, was designed to detect the X-ray fluorescence, caused …
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