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.
Results
Showing 1 to 11 of 11 for “"air turbine"”.
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Ram air turbine enhancement for auxiliary power unit replacement
… fuels are currently the primary energy source of aircraft and cause harm to the environment. This study highlights the use of clean energy instead of fossil fuels in aircraft. This work aimed to study the possibility of dispensing auxiliary power unit (APU) in aircraft powered by fossil fuels to …
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A design study to harvest electrical energy from walking and running motions
… and a design incorporating a miniature air turbine coupled with an electromagnetic generator was introduced. Initial testing on this proof of concept device yielded peak power values on the order of 10- 4W to 10- 3W with much room for improvement. It was concluded that this sort of …
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The measurement of the running torque of oil and grease lubricated instrument ball bearings under combined radial and axial loads
… the inner race was driven at test speed by an air turbine. The accumulated data was the result or 30 test series, with each series being constituted of a test sample of six ball bearings. From the study, it was consluded that the strain gage method of torque sensing accurately measured the …
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More Electric Systems Architecture Effect on Business Jet Performance
… Dassault Falcon 2000. A model of the existing aircraft, both of its overall flying characteristics and performance and of its detail systems layout, is created using Pacelab APDc and SysArcc programs. The model is validated with respect to the aircraft published data. Then, another model of the …
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Humidification Processes in Gas Turbine Cycles
… improving the environmental performance of gas turbines. The potential of improving gas turbine component efficiencies has become smaller each decade and therefore, thermodynamic cycles have become more interesting for power producing units. One of these cycles is the evaporative gas turbine …
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Actuator Disk Theory for Compressible Flow
… arise in real applications of propellers and turbines, the Actuator Disk Theory or Froude’s Momentum Theory was established for compressible, subsonic flow using the three laws of conservation and isentropic thermodynamics. The compressible Actuator Disk Theory was established for the unducted …
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Solvent extraction of phosphoric acid
… as the solvent. The cascade incorporates three air turbine agitated, cylindrical 900 ml mixers, and three cylindrical 200 ml settlers with air-lift solvent interstage transfer. Mean drop size in the fully baffled mixer was correlated. Drop size distributions were log-normal and size decreased …
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Development of a high-speed rotating bar mechanism
… from upstream shock wave / wake passing) on turbine blades. The rotating bar mechanism (RBM) consists of: a rotor with flexible cable “bars” attached to the rim of the disk, a disk housing, a bearing housing, a driving air turbine, and a turbine mounting housing. The RBM is mounted to the …
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Prediction of the running torque of instrument ball bearings at high speed under combined radial and axial loads
… Clarke at V.P.I. The driving source was a small air turbine developed by Mabie which performed smoothly and reliably between 0 and 50,000 rpm. The torque measuring system employed strain gages on a very small beam which was used to sense forces on the stationary outer race of the bearing while …
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Performance and power smoothing of innovative closed-circuit oscillating water column wave energy converter
… concept is equipped with non-return valves and air pressure accumulators to create a smooth unidirectional air flow, harnessed efficiently by a unidirectional turbine. In this thesis, the Tupperwave concept is investigated physically and numerically on a floating structure. In order to assess …
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Možnosti mikrokogenerační výroby v místech, kde nejsou primárně dostupná plynná, nebo kapalná paliva
Tato bakalářská práce se zabývá využitím mikrokogeneračních jednotek v místech, kde nejsou primárně dostupná plynná, nebo kapalná paliva. V rešeršní části jsou popsány dostupné technologie a aktuální stav trhu s mikrokogeneračními jednotkami, které využívají pevná paliva, především biomasu. V …