Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
ISBN 13 : 9781726806510
Total Pages : 30 pages
Book Rating : 4.8/5 (65 download)
Book Synopsis The Effects of Arcjet Operating Condition and Constrictor Geometry on the Plasma Plume by : National Aeronautics and Space Adm Nasa
Download or read book The Effects of Arcjet Operating Condition and Constrictor Geometry on the Plasma Plume written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-10-06 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of plasma number density and electron temperature were obtained in the plumes of lab arcjet thrusters using electrostatic probes of both spherical and cylindrical geometry. The two arcjet thrusters used had different constrictor and/or nozzle geometries and operated on mixtures of nitrogen, hydrogen, and ammonia to simulate the decomposition products of hydrazine and ammonia. An increase in the measured electron density was observed for both geometries with increasing arc power at a constant mass flow rate and with increasing mass flow rate at a constant arc current. For a given operating condition, the electron number density decreased exponentially off centerline and followed an inverse distance squared relationship along the thrust axis. Typical measured electron temperatures ranged from 0.1 to 0.2 eV. Carney, Lynnette M. and Sankovic, John M. Glenn Research Center RTOP 506-42-31
