Accession Number : ADA293654
Title : Beam-Centroid Tracking Instrument for Ion Thrusters.
Descriptive Note : Technical rept.,
Corporate Author : AEROSPACE CORP EL SEGUNDO CA
Personal Author(s) : Pollard, J. E.
PDF Url : ADA293654
Report Date : 20 MAR 1995
Pagination or Media Count : 11
Abstract : Thrust vector stability for an electrostatic ion engine can be measured with improved sensitivity and time resolution by the method described here. Four double-wire Langmuir probes, aligned in the form of a cross, are placed in the exhaust plume and are translated by a motorized positioning system to balance the currents collected along two orthogonal axes. The thrust vector position is thereby measured with an angular resolution of <0.01 deg and a response time of <5 s.
Descriptors : *EXHAUST PLUMES, *ION ENGINES, ANGLES, IONS, STABILITY, RESOLUTION, LANGMUIR PROBES, XENON, THRUSTERS, THRUST VECTOR CONTROL SYSTEMS, ELECTROSTATICS, ORTHOGONALITY.
Subject Categories : Electric and Ion Propulsion
Distribution Statement : APPROVED FOR PUBLIC RELEASE