Theses and Dissertations
Reactive obstacle avoidance for the REMUS Autonomous Underwater Vehicle utilizing a forward looking sonar
(Monterey California. Naval Postgraduate School, 2006-06)
One day fully autonomous AUV's will no longer require human interactions to complete its missions. To make this a reality, the AUV must be able to safely navigate in unfamiliar environments with unknown obstacles. This ...
Heat conduction analysis of randomly dispersed singlewalled carbon nanotubes
(Monterey, California. Naval Postgraduate School, 2007-06)
This thesis studies the effective thermal conductivity of randomly oriented, percolated carbon nanotubes. To that end, a multiscale analysis approach was adopted. At the nanoscale, molecular dynamics simulation was performed ...
Friction stir processing of AS-CAST AA5083 Superplastic response
(Monterey, California. Naval Postgraduate School, 2009-06)
Plates of continuously cast AA5083 were subjected to friction stir processing (FSP) by three overlapping plunge and traverses. The FSP used a threaded pin tool with a pin diameter of 3 mm, pin length of 3 mm and a shoulder ...
Wind Tunnel renovation, flow verification and flapping wing analysis.
(Monterey, California. Naval Postgraduate School, 2006-06)
The Naval Postgraduate School (NPS) Micro-Air Vehicle (MAV) wind tunnel was refurbished in this study. This wind tunnel has a 61 by 38 centimeter test section with a contraction ratio of 6.75, and testing speeds up to 9 ...
A microstructural and mechanical property correlation of friction stir processed nickel aluminum bronze
(Monterey, California. Naval Postgraduate School, 2004-09)
Friction Stir Processing (FSP) is novel technique for localized modification of the surface layer of materials. FSP produces high local strains, strain rates and local temperatures that are 0.8 - 0.9 Tm, where Tm is the ...
Unsteady casewall pressure measurements in a transonic compressor during steam induced stall
(Monterey, California. Naval Postgraduate School, 2006-06)
During launch of aircraft off of a carrier deck, steam leakage is sometimes ingested into the aircraft's engine and may cause a compressor stall or 'pop-stall'. As the US Navy prepares to field the single engine F-35C Joint ...
Design of a coaxial split flow pulse detonation engine
(Monterey, California. Naval Postgraduate School, 2006-06)
Future Navy Capabilities indicate the need for a supersonic cruise missile. Thus the need exists for a low cost, light-weight, and efficient means of supersonic propulsion. NPS has been developing the Pulse Detonation ...
Analytical modeling of composite-to-composite (scarf) joints in tension and compression
(Monterey, California. Naval Postgraduate School, 2007-06)
Fracture mechanics-based multi-level computational modeling and simulation techniques were developed to predict failure strengths of composite scarf joints under tension or compression. Global, local, and element level ...
Numerically-based ducted propeller design using vortex lattice lifting line theory
(Monterey California. Naval Postgraduate School, 2008-06)
This thesis used vortex lattice lifting line theory to model an axisymmetrical-ducted propeller with no gap between the duct and the propeller. The theory required to model the duct and its interaction with the propeller ...
Autonomous underway replenishment at sea for Riverine operations
(Monterey, California. Naval Postgraduate School, 2008-03)
Currently the United States Navy is making a small footprint in the world's littoral regions with the help of the United States Marine Corps. In Iraq, the Marine Corps is actively conducting Riverine operations, however ...
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