Accurate control and measurement of propellant flow to a thruster is one of the most basic and fundamental requirements for operation of electric propulsion systems, whether they be in the laboratory or on flight spacecraft. Hence, it is important for the electric propulsion community to have a common understanding of typical methods for flow control and measurement. This paper addresses the topic of propellant flow primarily for the gaseous propellant systems that have dominated laboratory research and flight application over the last few decades, although other types of systems are also briefly discussed. Although most flight systems have employed a type of pressure-fed flow restrictor for flow control, both thermal-based and pressure-based mass flow controllers are routinely used in laboratories. Fundamentals and theory of operation of these types of controllers are presented, along with sources of uncertainty associated with their use. Methods of calibration and recommendations for calibration processes are presented. Finally, details of uncertainty calculations are presented for some common calibration methods and for the linear fits to calibration data that are commonly used.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Recommended Practice for Flow Control and Measurement in Electric Propulsion Testing


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    01.05.2017




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    Recommended Practice for Thrust Measurement in Electric Propulsion Testing

    Polk, James E. / Pancotti, Anthony / Haag, Thomas et al. | AIAA | 2017



    Recommended Practice for Use of Faraday Probes in Electric Propulsion Testing

    Brown, Daniel L. / Walker, Mitchell L. R. / Szabo, James et al. | AIAA | 2017


    Recommended Practice for Use of Emissive Probes in Electric Propulsion Testing

    Sheehan, J. P. / Raitses, Yevgeny / Hershkowitz, Noah et al. | AIAA | 2017