An uncertainty analysis of a common configuration of electric propulsion thrust stand is presented. The analysis applies to inverted pendulum thrust stands operating in a null-coil configuration with in-situ calibration. Several sources of bias and precision uncertainty are discussed, propagated, and combined to form conservative estimates of the relative and absolute thrust uncertainties. A case study of the NASA Glenn Research Center Vacuum Facility 6 thrust stand is presented. For the thruster investigated, the uncertainty was estimated to be ±6.9mN over the entire span of thrust. This uncertainty represents a maximum instrument bias introduced by the thrust stand. The paper does not address repeatability of actual thrust measurements, as this is generally beyond the influence of the thrust stand and can be dependent on a large number of factors.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Uncertainty in Inverted Pendulum Thrust Measurements


    Contributors:

    Conference:

    AIAA/SAE/ASEE Joint Propulsion Conference ; 2018 ; Cincinnati, OH, United States


    Publication date :

    2018-07-09


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    Uncertainty in Inverted Pendulum Thrust Measurements

    Mackey, J. / Haag, T. / Kamhawi, H. et al. | NTRS | 2018


    Uncertainty in Inverted Pendulum Thrust Measurements

    Mackey, Jon / Hall, Scott J. / Haag, Thomas et al. | AIAA | 2018


    Uncertainty in Inverted Pendulum Thrust Measurements

    Mackey, Jonathan A. / Haag, Thomas W. / Kamhawi, Hani et al. | NTRS | 2018


    An Inverted-Pendulum Thrust Stand for High-Power Electric Thrusters

    Kodys, A. / Murray, R. / Cassady, L. et al. | British Library Conference Proceedings | 2006


    An Inverted-Pendulum Thrust Stand for High-Power Electric Thrusters

    Kodys, Andrea / Murray, Robert / Cassady, Leonard et al. | AIAA | 2006