Theses and Dissertations
Improved aerothermodynamic measurements of the T63-A-700 gas turbine engine
(Monterey, California. Naval Postgraduate School, 2005-09)
This thesis contains an analysis of the failure of the instrumentation ring for measuring the combustor exit temperature and total pressure in the T63-A-700 gas turbine engine. An improved ring design has been constructed ...
Aerodynamic validation of emerging projectile and missile configurations
(Monterey, California. Naval Postgraduate School, 2010-12)
The M549 projectile has been analyzed using two different aerodynamic codes. The semi-empirical AP05 code has provided a very fast way to obtain results. The CFX code, based on the numerical solution of the full Navier-Stokes ...
Particle Image Velocimetry (PIV) measurements in the wake of a cascade of compressor blades at stall
(Monterey California. Naval Postgraduate School, 2006-03)
The flow around second generation controlled-diffusion compressor blades in cascade at stall was examined through the use of a Particle Image Velocimeter (PIV). This examination was conducted from the trailing edge of the ...
Experimental and computational investigation of flow in a transonic compressor inlet
(Monterey, California. Naval Postgraduate School, 2005-09)
As part of an initial baseline survey of the inlet flow-field into a transonic compressor rotor, a five-hole probe was calibrated and used to determine the Mach number and inlet pitch angle distributions. The data for Mach ...
Numerical and experimental investigation of performance improvements of a cross-flow fan
(Monterey, California. Naval Postgraduate School, 2010-06)
The cross-flow fan has an inherent ability to provide thrust to an airfoil as well as provide boundary layer control. The thrust can be easily vectored and usually the cross-flow fan is fully embedded within the airfoil, ...
Energy efficient waste heat recovery from an engine exhaust system
(Monterey, California: Naval Postgraduate School, 2016-12)
The purpose of this thesis was to design and demonstrate the effectiveness of a new style of heat exchanger for waste heat recovery. The new design sought to optimize heat recovery from a gas turbine engine exhaust as well ...
Steady state and transient measurements within a compressor rotor during steam-induced stall at transonic operational speeds
(Monterey, California. Naval Postgraduate School, 2006-09)
Steam leakage from an aircraft carrier catapult is sometimes ingested into the aircraft engines upon launch which may induce compressor stall. Investigation of this phenomenon is of particular interest to the Navy with its ...
Viability of Cross-Flow Fan for Vertical Take-Off and Landing Aircraft
(Monterey, California. Naval Postgraduate School, 2012-06)
The present study is focused on determining a housing design that, when paired with an off-the-shelf cross-flow fan rotor, will generate a trust-to-weight ratio significant enough to allow for vertical take-off. The ...
Experimental and computational analysis of a miniature ramjet at Mach 4.0
(Monterey, California: Naval Postgraduate School, 2013-09)
A miniature ramjet engine designed to perform at Mach 4.0 was tested in a supersonic wind tunnel. Cryogenic strain gauges were used to measure drag and Schlieren imaging techniques were used to observe the inlet Mach cone ...
Experimental investigation of a six inch diameter, four inch span cross-flow fan
(Monterey California. Naval Postgraduate School, 2008-06)
Investigations into the use of a cross-flow fan as a potential source of propulsion and lift have arisen due to the cross-flow fan's geometry, light weight and safety by shielding from bystanders. The application of a ...
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Hobson, Garth V. (61)
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Mechanical Engineering (61)