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 1047 for “"rotor"”.
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Study of tandem helicopter rotor-rotor interference effects on the thrust of the rear rotor
Thesis: M.S., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 1963
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A coupled rotor-fuselage aeroelastic analysis using complex rotor modes
… capable of analysing the aeroelastic response of rotorcraft in both steady and manoeuvring flight is developed. Particular emphasis is given to the correct modelling of the dynamic interactions between the rotor and the fuselage. This is achieved via the use of complex rotor modes, which allows …
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Quasiturbine rotor development optimization
… important components which they are housing and rotor .Quasiturbine rotor contains a number of parts such as blades, seal, support plate and mechanism .This research focus on modeling and simulation for Quasiturbine seal to improve it and reduce the wear by using motion analysis tool and …
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Double Rotor Induction Motor
Made available in DSpace on 2014-12-08T22:24:27Z (GMT). No. of bitstreams: 1 6901370.pdf: 3996298 bytes, checksum: c55708b13fe70ffef117a486f0c36ed2 (MD5) Previous issue date: 1968
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The Quantum Kicked Rotor
The quantum kicked rotor has served as a model for testing the ideas of quantum chaos since the field's inception. In this thesis we present an overview of the kicked rotor, both from a semiclassical standpoint as well as from a purely quantum standpoint. At the heart of our kicked rotor model is a …
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Computation of helicopter rotor wake geometry and its influence on rotor harmonic airloads
Thesis. 1975. Ph.D.--Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.
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Two-dimensional analysis of rotor suction and the impact on rotor-stator interaction noise
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1994.
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The smart rotor wind turbine
The smart rotor is an upgrade to the wind turbine rotor that facilitates active modification of the blade aerodynamics, thus allowing enhanced control of the rotor loads. In this thesis a number of research areas relating to the smart rotor are explored and advanced. The synthesised wind field …
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Coaxial contrarotating twin rotor aerodynamics
The modelling of a Coaxial Contrarotating Twin Rotor (CCTR) system has been developed from single rotor modelling techniques. Particular attention has been paid to the characteristics of the tip vortex, namely, vortex strength, structure and decay. Equations are presented which describe both the …
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Induction Motors With Rotor Helical Motion
… aside one another. Both armatures have a common rotor which can be either solid or cage rotor. The rotor can move rotary, linearly or with helical motion. The linear motion generates dynamic end effect on both linear and rotary armature. Modeling such an effect in rotary armature is a significant …
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Rotor eólico Darrieus: um estudo experimental
Performance analyse of a Darrieus rotor with straight an.d troposkien blades using NACA 0012 and NACA 0015 profiles was realized. A reduzed scale model (height = diameter = 500 mm) with "Prony" brake dynamometer was tested in a wind tunnel with a 1 m2 test section and maximum wind velocity of 8,0 …
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Analyses of electronic asymmetric rotor spectra
<p>Seven type C bands of the 3700 A Ã<sup>1</sup>B<sub>1</sub>-X̃<sup>1</sup>A<sub>1</sub> system of pyridazine (1,2-diazine) have been analyzed by rotational band contour analysis. The rotational constants, in either the upper or lower state, of each band were adjusted until the simulated contour …
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Rotor Wakes; Formations, Interactions, and Design
… investigates the fundamental flow physics of rotor wakes and presents a rotor design methodology that enables the creation of mission-tailored wakes for improved aero-propulsive integration. These goals are addressed through a series of experimental campaigns involving both ducted and unducted …
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High Fidelity Open Rotor Noise Prediction
… the next generation of jet engines. An ``open rotor'' replaces the fan of the turbofan with a set of external rotors. This has the potential to offer a significant improvement in propulsive efficiency, but the design for low noise is a key challenge. Hence, high fidelity noise prediction …
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Active control of a flexible rotor
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.
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Dynamics of full annular rotor rub
Thesis (Ocean E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1986.
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Piezoelectric actuators for helicopter rotor control
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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