Determination of Parameters in Arcjet Plume by Tomographic Reconstruction

摘要

The spatial temperature and atomic number density of the plume generated by a 3-kW-class arcjet thruster are determined with a small number o absorption measurements across the plume based on diode-laser absorption computerized tomography. The maximum temperature and atom number density increase with the massflow rate and discharge current. The increase trend is not always found with the spceific input power, although there exists an increasing trend with it at a fixed massflow rate.