Aerodynamic Studies of Antenna Breakdown, Part I.
Abstract
Work performed during 1967 and 1968 on the transmission and radiation characteristics of antennas on the surface of a plasma-covered wind tunnel model is reported. The model used is a blunted cone-cylinder operated in a supersonic wind tunnel at M = 4, P sub o = 1.2 psia and T sub o = 100F. The plasma sheath is obtained by injecting nitrogen plasma from a DC arc jet located in the model nose. The effect of the plasma on X-band and S-band antennas located on the model surface was studied and it was found that the breakdown power and transmitted power of an X-band slot were greatly reduced by the plasma layer. The presence of the plasma layer was also found to increase the VSWR of an S-band slot from 1.2 to 20. Some development efforts associated with improvement of the arc jet are also presented. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1969
- Accession Number
- AD0855543
Entities
People
- C. W. Haldeman
- E. E. Covert
- J.L. Sullivan
- L. R. Boedeker
Organizations
- Massachusetts Institute of Technology