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Mechanical Engineering

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Boise State University

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Full-Text Articles in Engineering

Towards Optimization Of A Low Temperature Co-Fired Ceramic Catalyst Chamber For A Monopropellant Microthruster, Andrew Vissotski Apr 2010

Towards Optimization Of A Low Temperature Co-Fired Ceramic Catalyst Chamber For A Monopropellant Microthruster, Andrew Vissotski

McNair Scholars Research Journal

The reduction in space vehicle size and mass presents the need to develop a proportionally smaller propulsion system for orbital station keeping. A Low Temperature Co-Fired Ceramic (LTCC) monopropellant micropropulsion device has been developed at BSU. The simple, robust design features a heterogeneous catalyst chamber used to decompose a rocket-grade hydrogen peroxide monopropellant, to produce thrust. Initial prototype testing indicates only partial peroxide decomposition requiring an in-depth analysis of the geometric layout of the devices to increase system efficiency. This study employs a control volume based methodology to analyze the performance of various catalyst chamber designs. This approach was chosen …


Lower Extremity Mechanics During Cutting Tasks In Different Shoe-Turf Combinations, Rafael Garcilazo Apr 2007

Lower Extremity Mechanics During Cutting Tasks In Different Shoe-Turf Combinations, Rafael Garcilazo

McNair Scholars Research Journal

The demands placed on the lower extremity when performing jumping and cutting maneuvers are depending, in part, on the interaction between the playing surface and the athlete's footwear. Higher demands are likely to result in increased incidence of injury, so for safety reasons it is important to quantify how the shoe-turf interface affects joint loads. The purpose of this study is to compare the forces on the lower extremity while landing and side cutting (rapid direction change at approximately 45 degrees) on artificial football turf with different styles of football cleats.