@Article{SoaresMarq:2021:VaDySt,
               author = "Soares, Diogo Leon Oliveira and Marques, Rodrigo Intini",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)}",
                title = "In vacuum dynamic and static tests of a thrust balance for 
                         electric propulsion with hysteresis analysis and behaviour 
                         prediction with transfer function",
              journal = "Measurements Science and Technology",
                 year = "2021",
               volume = "32",
               number = "12",
                pages = "e125903",
                month = "Dec.",
             keywords = "electric propulsion, hystersis, magnetic damper, thrust 
                         measurement, torsinal thrust balance, transfer function, two-stage 
                         pulsed plasma thruster.",
             abstract = "This work describes the advances on the development of a 
                         thrust-stand for electric propulsion application with a focus on 
                         the constraints of the two-stage pulsed plasma thruster (TS-PPT) 
                         being developed at INPE at the Electric Propulsion Laboratory 
                         (LPEL) of the Laboratory of Combustion and Propulsion (LABCP). 
                         While previous work on this instrument focused on basic 
                         development in atmospheric pressure the present effort presents 
                         the development undertaken to elevate the TRL of the device to 
                         allow it to operate in vacuum - the environment where actual 
                         electric thrusters operate and are tested. To cater for INPE's 
                         TS-PPT specification, standard masses summing 1.2 kg were used 
                         while the electrostatic calibration device (ECD) was set to 
                         produce 31 \μNs. A detailed hysteresis analysis was carried 
                         out at the target TS-PPT specification together with a transfer 
                         function that aimed at extrapolating and predicting the behaviour 
                         of the instrument. In addition, this work shows the development of 
                         a new magnetic damper for the instrument that reduces the waiting 
                         time between tests. A new calibration at the TS-PPT specification 
                         points were undertaken in vacuum since previous calibration were 
                         made for atmospheric pressure and did not include the specific 
                         points of interest for the TS-PPT. Furthermore, previous 
                         calibration procedures were verified to ensure they would apply to 
                         the vacuum conditions and to account for the substitution of some 
                         thrust stand previously incompatible vacuum parts and also to 
                         account for the addition of the new magnetic damper and other 
                         unforeseen conditions caused by the vacuum environment.",
                  doi = "10.1088/1361-6501/ac271d",
                  url = "http://dx.doi.org/10.1088/1361-6501/ac271d",
                 issn = "0957-0233 and 1361-6501",
             language = "en",
           targetfile = "soares_vacuum.pdf",
        urlaccessdate = "10 maio 2024"
}