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 882 for “"Wheel"”.
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Applied System Identification for a Four Wheel Reaction Wheel Platform
Applied System Identification for a Four Wheel Reaction Wheel Platform By Seth Franklyn Silva At the California Polytechnic State University, San Luis Obispo there is a four-wheel reaction wheel pyramidal simulator platform supported by an air-bearing. This simulator has the current capability to …
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Control and Sensor Development on a Four-Wheel Pyramidal Reaction Wheel Platform
<p>The Pyramidal Reaction Wheel Platform, or PRWP, is used to simulate three-axis controls in a torque free space-like environment. The primary purpose of the system will be to evaluate the effects of conjoining sensors to maximize pointing accuracy. Furthermore, the system will incorporate a star …
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Open wheel racecar steering
The steering system of a rear wheel drive open wheel racecar is the only directional control the driver possesses while driving. Steering linkages must be carefully designed to allow cars to navigate turns without exhausting the driver. Motorsports vehicles are designed to make tight turns while …
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The Development and Optimization of a Teleoperated Four-Wheel Drive/ Four-Wheel Steer Vehicle
A teleoperated four wheel drive/four wheel steer vehicle was developed. The vehicle was designed according to no slip conditions in which the wheels maintained zero velocity relative to the ground in both longitudinal and latitudinal directions. The vehicle was controlled with an intuitive …
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Edge of the Wagon Wheel
This is a satirical sci-fi novel set in the near future. Following the inadvertent melting of the ice caps, the United States splits—peacefully, like a mutual breakup—into four new countries. In an attempt to prove that the earth is flat, the Best States of America (BSA) have launched a replica of …
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Design for a ferris wheel
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1900.
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The Medicine Wheel for Carbohydrate Counting
… culturally specific web-based tool “The Medicine Wheel for Carbohydrate Counting.” This web-based educational tool reflects Native American culture and values, primarily of the Native Americans of the Northern Plains. In-depth interviews from ten adult Native Americans with a diagnosis of diabetes …
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Identify Mind Wandering Behind the Wheel
… asked to press a button mounted on the steering wheel any time they found themselves “zoning out”. Driving performance metrics and oculomotor scanning data were analyzed to compare driving behaviors and performance under attentive versus inattentive mental states. The results showed that mind …
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Experimental Evaluation of Wheel-Rail Interaction
… provides a detailed experimental evaluation of wheel-rail interaction for railroad vehicles, using the Virginia Tech Federal Railroad Administration (VT-FRA) Roller Rig. Various contact dynamics that emulate field application of railroad wheels on tracks are set up on the rig under precise, …
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Reaction Wheel Ball Bearings Microvibration Source Characterisation
… high speed rotating devices such as Reaction Wheel Assemblies (RWA) have been a satellite stability issue since the beginning of the human space exploration. The potential RW rotor unbalances, assembly misalignments and imperfections affecting the ball bearing components, are some of the main …
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Wheel Path Wandering Based On Field Data
<p>The position and width of wheel path on a pavement lane is an important consideration in conducting pavement distress survey, especially for distinguishing longitudinal cracking from fatigue cracking. Currently, the widely used wheel path definition is derived from the LTPP distress manual with …
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Structural performance of spoke wheel roof systems
A spoke wheel roof system consists of tension rings, compression rings, and radial spokes and resists loads mainly through axial forces. Due to its light weight and ability to achieve a column-free, long span, it has been a popular solution to structures such as stadia since its first use in 1960s. …
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The design process for wheel-robot integration
In this thesis, the design process for wheel-robot integration was documented and reflected on. The project focused on redesigned certain aspects a half-scale wheel-robot to be integrated with a half-scale CityCar prototype being built by the MIT Media Lab's Smart Cities Group. Primary attention …
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Optimization of Rover Wheel Geometries for Planetary Missions
… explorations, the rovers need to have reliable wheels to drive around. However, due to the soil being soft, the wheels on the rover start to lose traction and the wheels sink while driving to various locations. Previous work in this field has been done experimentally or with the use of …
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The disability press: A wheel still in spin
This study, exploring the messages of the disability press, also utilizes Marxist theory to explain empowerment in the disability community. Although Marxism has significant value for explaining disability oppression, Marx's theory of internal relations, describing an interconnected web of …
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Ring motor front wheel for electric motorcycle applications
… of a ring motor meant for replacing the front wheel of an electric motorcycle for performance benefits such as traction and additional acceleration. Gas motorcycles are unable to power the front wheel without some degree of mechanical complexity, but electric machinery is not subject to the …
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Fatigue and fracture of a railway wheel steel
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1994.
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Prediction of wheel wear profiles by analytical methods
… the prediction of the wear history of a train wheel by a numerical simulation. The method consists of three fundamental steps. First, the wheel/rail contact geometry is characterized. Contact points, Herzian contact patch area and creep coefficients are determined as functions of the wheelset …
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