| Автор | Charles Cason |
| Дата выпуска | 1969-10-01 |
| dc.description | An electron beam probe has been used in the Micom 8 MW Plasma Facility. Difficulties in applying the probe to measurements of such parameters as gas density were found to be caused by the weak plasma arc-generated magnetic fields producing positional displacements of the beam. This problem was solved by means of a closed-loop electronic controller. Response time of the controller is down 3 dB at 130 Hz; this was found to be sufficiently fast for adequate control. The operation of the controller indicated that 0·26 G magnetic field was induced in the flow stream by the arc jets. Gas velocity in a plasma flow was estimated by observation of the drift rate of pulsed beam-generated plasma cylinders as a phase shift from two observation points. Estimates of gas velocity for an air flow of 156 g s<sup>−1</sup> from phase shift measurements gave 3700±400 m s<sup>−1</sup> as compared with a machine computed value of 3800 m s<sup>−1</sup> for a normalized specific total enthalpy of 150. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | A method for measuring plasma arc wind tunnel gas velocity with a position controlled electron beam probe |
| Тип | paper |
| DOI | 10.1088/0022-3735/2/10/312 |
| Print ISSN | 0022-3735 |
| Журнал | Journal of Physics E: Scientific Instruments |
| Том | 2 |
| Первая страница | 885 |
| Последняя страница | 889 |
| Аффилиация | Charles Cason; US Army Missile Command, Redstone Arsenal, Alabama, USA |
| Выпуск | 10 |
