Pulsed Plasma Radio Frequency Interference Studies.

摘要

An unshielded external test set was developed which allows the millipound thrust level pulsed plasma thruster to be repetitvely operated in air. The present design was operated at a peak discharge current of 47 kiloamperes. Electromagnetic emission tests carried out showed that the present unshielded test set would have to be shielded if the pulsed noise generated by it has to meet RE02electric field and magnetic field requirements. The results of the noise measurements presented can be used as a basis for the design of the shielding. Shielding effectiveness measurements have shown that EMI gaskets are not required in the covers of the thruster enclosure if the covers are well fitted and secured by a double row of alternately spaced screws. (Author)