Effects of Plasma on Polyrod Antenna.
Abstract
The report describes predictions for reentry attenuation of a polyrod antenna covered by a conical nose cone. It also details the steps leading to these predictions, which are: (1) Determination of reentry-plasma properties from previous calculations and flight-test measurements. (2) Measurements of attenuation and pattern changes as the reentry plasma was simulated over the nose cone. The plasma at low altitudes was simulated by using a high-loss dielectric called space cloth. For high-altitude simulation, high-power X-band pulses fed through the same polyrod antenna were used to ionize a thin layer of helium around the cone. Predictions are given for various nose radii and for either teflon or carbon cone material. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1973
- Accession Number
- AD0769957
Entities
People
- W. C. Taylor
Organizations
- SRI International