IKBFU's Vestnik

2017 Issue №4

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Modeling of the cathode thermal conditions

Pages
24-32

Abstract

This article provides results of the cathode of stationary plasma engine thermal vacuum test with various operating modes simulated, a thermal calculation and the cathode thermal mathematical model verification. Based on the calculations, the cathode thermal model and operating performances were assessed, the most efficient required cathode life time characteristics were selected, which are related to the cathode heater power and operating time with provision of emitter optimal temperature in the automatic mode and welded joints leak-tightness. It was determined that the minimum heater power for cathode start-up is 60 W, the time to prepare for a start-up is 140 sec. To improve the cathode stable operation it is recommended to replace the tail piece and getter cover material for Molybdenum М99.95-МП.

Reference

1. Алямовский А. А. SolidWorks Simulation. Как решать практические задачи. М., 2012.
2. Основные элементы SolidWorks. DassaultSystemes SolidWorks Corporation 175 Wyman Street Waltham, MA 02451 USA, 2011.
3 Лившиц Б. Г. Физические свойства металлов и сплавов. М., 1959.
4. Кресанов В. С., Малахов Н. П., Морозов В. В. и др. Высокоэффективный эмиттер электронов на основе гексаборида лантана. М., 1987.
5. Агте К., Вацек И. Вольфрам и Молибден. М., 1964.
6. Туманов А. Т., Портной К. И. Тугоплавкие материалы в машиностроении. М., 1967.