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 1001 for “"Blade"”.
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Development of an integral twist-actuated rotor blade for individual blade control
An integral twist-actuated rotor blade has been developed for helicopter individual blade control (IBC) applications. A I/6th Mach scale CH-47D blade was designed, fabricated, and tested in hover at the MIT Hover Test Stand Facility. The design incorporates active fiber composite actuators (AFC) …
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Gas turbine blade cooling
Thesis (M.S.) Massachusetts Institute of Technology. Dept. of Mechanical Engineering, 1947.
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Acoustics comparison of a novel reduced tip vortex rotary blade and a traditional blade
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2023-12-01
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Micro-scale turbopump blade cavitation
The possibility of a silicon micro-fabricated turbopump for the use in a micro-fabricated bipropellant liquid rocket engine is of interest. Such a pump might have airfoils on the order of 1mm chord and 0.2mm span and operate at a Reynolds number of 6000. Cavitation is a major technical issue in …
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Marine propeller blade tip flows
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1982.
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Blade resolved simulation of wind farms
… the time to solution for a high-fidelity, blade-resolved CFD simulation of a wind farm using Tenasi. The intent is to reduce the overall cost by initializing the flow fields of the individual turbines in the wind farm using a steady state or an unsteady simulation of a single turbine. This …
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Rotational effects on turbine blade cooling
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1994.
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Probabilistic analysis of turbine blade durability
The effect of variability on turbine blade durability was assessed for seven design/operating parameters in three blade designs. The parameters included gas path and cooling convective parameters, metal and coating thermal conductivity and coating thickness. The durability life was modelled as …
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Vibration Analysis of a Fan/Compressor Blade
<p>The vibration of blades in gas turbine engines has become an important issue during the last decade because of its significant impact on high cycle fatigue failure due to resonant vibrations. The main objective of this thesis is the vibration analysis of compressor/fan blade using …
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Blade mounted actuation for helicopter rotor control
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1993.
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Blade row interaction effects on compressor measurements
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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Compression Molding of Carbon Composite Prosthetic Foot Blade
… of compression molding carbon composite foot blades. A proven method was selected from the literature, the method was chosen due to its usage for compression molding composites with curved surfaces where an elastic medium is used as an interface between the solid mold halve and a laminate.Two …
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Structural design of waste-thermoplastic wind turbine blade
Wind turbine blades are unrecyclable at end of life, which has led to the testing of thermoplastics to replace thermosets in the composite; thus making recycling possible. Another challenge, waste plastics of which 55% of all plastics produced in 2015 were discarded into the environment. Utilising …
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Fatigue mechanisms in FV520B, a turbine blade steel.
An investigation has been undertaken to examine the effect of microstructure on the mechanical properties of FV520B, a precipitation hardenable martensitic stainless steel. This high performance grade of stainless steel was heat treated to three commercially available material specifications, …
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Below-Rated Control of Swept-Blade Wind Turbines
… shown that 1.5 and 3.0 MW wind turbines with blade sweep have an increased annual energy production (AEP) of approximately 5% when compared to straight-blade wind turbines. The objective of the research was to further increase below-rated, variable speed, power capture when using swept-blades. …
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Damage Modeling Method For Turbine Compressor Blade Tuning
The thesis presents a method of evaluation for blade damage in Combustion Turbine Compressor Section. This method involves use of multiple domains within a single Finite Element Model to predict the effect of damage on the blade properties. This approach offers significant time and effort savings …
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