Survey of Technology on Communication Through the Plasma Sheath
Final rept. 1 May 1967-28 Feb 1970
OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB
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A review of the state of the art in techniques for alleviating radio blackout during atmospheric reentry is presented. The various techniques currently being studied by those organizations interested in this problem include injection of coolants and electrophilics, magnetic windows, electron beam devices, vehicle shaping, electrostatic charge collection and the use of high and low frequencies. The relative advantages and disadvantages of these methods are discussed. With the exception of simple, pointed, ballistic vehicles the only flight experiments to date, concerned specifically with alleviation, have been on injection devices. The report concludes that these devices have many limitations and that the time is come to flight test other types of system, the magnetic window being the most promising in the light of recent developments in superconducting technology.
- Plasma Physics and Magnetohydrodynamics
- Radiofrequency Wave Propagation