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Full-Text Articles in Mechanical Engineering
Pitch Dynamics Of Unmanned Aerial Vehicles, W. F. Phillips, Doug F. Hunsaker, N. R. Alley, R. J. Niewoehner
Pitch Dynamics Of Unmanned Aerial Vehicles, W. F. Phillips, Doug F. Hunsaker, N. R. Alley, R. J. Niewoehner
Mechanical and Aerospace Engineering Faculty Publications
Dynamic stability requirements for manned aircraft have been in place for many years. However, we cannot expect stability constraints for UAVs to match those for manned aircraft; and dynamic stability requirements specific to UAVs have not been developed. The boundaries of controllability for both remotely-piloted and auto-piloted aircraft must be established before UAV technology can reach its full potential. The development of dynamic stability requirements specific to UAVs could improve flying qualities and facilitate more efficient UAV designs to meet specific mission requirements. As a first step to developing UAV stability requirements in general, test techniques must be established that …
A Novel Capacitance Sensor For Fireside Corrosion Measurement, Heng Ban, Zuoping Li
A Novel Capacitance Sensor For Fireside Corrosion Measurement, Heng Ban, Zuoping Li
Mechanical and Aerospace Engineering Faculty Publications
Fireside corrosion in coal-fired power plants is a leading mechanism for boiler tube failures. Online monitoring of fireside corrosion can provide timely data to plant operators for mitigation implementation. This paper presents a novel sensor concept for measuring metal loss based on electrical capacitance. Laboratory-scale experiments demonstrated the feasibility of design, fabrication, and operation of the sensor. The fabrication of the prototype sensor involved sputtering deposition of a thin metal coating with varying thickness on a ceramic substrate. Corrosion metal loss resulted in a proportional decrease in electrical capacitance of the sensor. Laboratory experiments using a muffle furnace with an …