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 8 of 8 for “"Corona discharges"”.
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Numerical and Experimental Study of the Trichel Pulses in Needle-plane Geometry
One of the unique aspects of the negative corona discharges in the air is the regular train of pulses that form the discharge current, called Trichel pulses. These pulses are the result of the combination of several phenomena such as the avalanche ionization of the neutral molecules by the impact …
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Methods of Aircraft Charge Control During Flight
… in fair weather conditions is described. A corona discharge wire is used for remote charging of a 1.9 m wingspan plane to both positive and negative polarities. By applying a voltage between -13 and +13 kV to the wire, the plane charged to +23 and -30 kV, respectively. The system …
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Investigating the Impacts of Meteorology and Long-Range Transport on near Surface and Free Tropospheric Ozone over Texas
… determined to be direct production of ozone from corona discharges; calculated enhancement values agreed with previous studies. The second topic of my thesis focused on understanding long-term trends in ozone and meteorological patterns over Dallas Fort Worth metropolitan area. In order to do …
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Plasma-water interface reactions caused by positive corona and glow discharges
… and positive plasma produced by two types of gas discharges: corona discharge producing low energy drift positive ions and glow discharge producing energetic positive ions. A nine-needle electrode was developed to initiate d.c. corona discharge in nitrogen and oxygen. The experiments with a mesh …
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Advances in electroaerodynamic thrusters for aircraft propulsion
… from alternative EAD architectures using corona discharges, in which these processes cannot be independently controlled. By using benchtop and thrust-measurement tests, it is found that the current and thrust produced by these decoupled devices scales with the DC voltage and gap distance …
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Insulation Design, Assessment and Monitoring Methods to Eliminate Partial Discharge in SiC-based Medium Voltage Converters
… online monitoring can be realized for surface or corona discharges by capturing either the acoustic signal or the photons that are generated by discharge events.