Structure of the ionospheric disturbances about planetary entry probesLocal ionospheric disturbances which would be created by a planetary entry probe are investigated. Competing theories of spacecraft-ambient plasma interactions are used to estimate computationally the perturbations of the plasma, particularly the structure of the near wake behind planetary entry vehicles. The results have bearing on the location and operation of plasma diagnostic instrumentation aboard planetary entry vehicles. Recent estimates of Mars ionospheric properties plus vehicle dimensions and speeds similar to those of the Viking Mars Lander are used to define the parameters essential to the theory. Smaller entry bodies are also considered. Comparisons are made of the results based on the different theories for a given assumed planetary atmosphere, and also with the perturbations a similar vehicle would generate in the earth's ionosphere.
Document ID
19740034891
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Weil, H.
Jew, H. (Michigan, University Ann Arbor, Mich., United States)
Samir, U. (Michigan, University Ann Arbor, Mich.; Tel Aviv University, Tel Aviv, Israel)