Other
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.555e.131k&link_type=abstract
Proceedings of the 4th International Spacecraft Propulsion Conference (ESA SP-555). 2-9 June, 2004, Chia Laguna (Cagliari), Sard
Other
Scientific paper
Mathematical modeling for the processes in pulsed plasma thrusters is the main subject of a large number of works. However, known mathematical models do not account for the entire complex of physical phenomena, taking place inside the channel of ablative pulsed plasma thruster (APPT). In general, calculation results correspond to the test data qualitatively only. Let's consider suggested model APPT. The discharge channel of the engine from above and from below is limited to the parallel metal plates playing a role of electrodes to which the having voltage from the condenser store of energy is brought. Plates have identical size and are executed in the form of trapezes or rectangulars. The having voltage is brought to the smaller basis of trapezes, and plasma goes from the smaller basis to the greater. Plates are from each other on distance d and have length eL . The part of lateral walls of the channel is closed by the teflon blocks having length tefL in a direction of movement of plasma. It is supposed, that tefe LL > , i.e. electrodes have the big length, than teflon blocks. It is also supposed, that the small initial weight of a plasma blob is set. The plasma blob is accelerated in the channel basically due to electromagnetic forces, and its weight adds for the account ablation teflon blocks as a result of absorption by teflon of energy of radiation of plasma.
Khrustalev M. M.
Lyubinskaya N.
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