EXPERIMENTAL STUDIES OF PULSED MICROWAVE BREAKDOWN EFFECTS IN A HYPERSONIC AIR PLASMA.
Final rept. Feb 65-Jan 68,
CORNELL AERONAUTICAL LAB INC BUFFALO NY
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An experimental study is described of the effects of high power RF pulse transmission from an S-band aperture antenna located on a hemisphere-cylinder model in hypersonic flow. Static breakdown phenomena were also investigated for the S-band antenna geometry under ambient, no-flow conditions. A pulse train consisting of four 2 micro sec pulses spaced 100 micro sec apart was employed and the experiments comprised the measurement of the amplitude and pulse shape details of the transmitted signal as well the detailed shape of the first reflected pulse. Measurements were also made of the amplitude and shape details of the coupled signal between two adjacent S-band antennas on the model. The aperture power for breakdown and extinction as a function of the ambient pressure was also determined in the static experiments. Author
- Electromagnetic Pulses
- Unmanned Spacecraft
- Radio Communications