Electrodynamic tether system-possibility of realization

The tether systems are very attractive for space activity. They may be used for maintaining the large fixed distances between basic satellite and subsatellites with a variety of scientific instruments. The problem of such systems application to lower ionospheric layers measurements and electrodynamic objectives is discussed. It is shown that the application efficiency of long or extra-long tethered systems for space experiments both for instrumentation delivery to the lower ionosphere and for different electrodynamic purposes is very low. Moreover in spite of small radius the great length of the tethering rope has big interacting surface with tiny particles floating in the space. So the collision probability of the tether with such particles is rather high that can cause soon the rope break.