The plasmas of rocket flight

The plasmas attending a rocket in flight vary widely in charge density and size depending upon the source of the plasma and the altitude of operation. Such a plasma, i.e., a medium containing equal numbers of positive and negative charge so that it is electrically neutral in its totality, interacts with electromagnetic signals causing reflection, refraction and absorption. The solution of problems encountered in communicating through such a plasma depend upon a knowledge of its electrical properties. The complexity of the interaction requires that approximate solutions be used. A judicious application of the results of laboratory, flight and theoretical studies are required to enable the successful design of communication links. Extended theoretical and experimental studies are required to enable designs of communication systems for the space ship of the future.