Proposed methods for the reconstruction of the Pioneer/Venus probe entry trajectories

Details Proposed methods for the reconstruction of the Pioneer/Venus probe entry trajectories Proposed methods for the reconstruction of the Pioneer/Venus probe entry trajectories

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979aiaa.meetq....f&link_type=abstract

American Institute of Aeronautics and Astronautics, Aerospace Sciences Meeting, 17th, New Orleans, La., Jan. 15-17, 1979, 11 p.

Physics

Atmospheric Entry, Descent Trajectories, Pioneer Venus 2 Entry Probes, Prediction Analysis Techniques, Trajectory Analysis, Venus Atmosphere, Acceleration (Physics), Angular Acceleration, Atmospheric Density, Covariance, Laser Doppler Velocimeters, Numerical Integration, Reconstruction, Velocity Measurement

Scientific paper

In connection with the Pioneer Venus Project, an orbiter and an array of atmospheric probes are sent to Venus in separate launches during 1978. The four probes, which are transported to the planet on an instrumented Bus are released approximately 20 days prior to encounters. There are three identical small probes and a large probe. Each is designed to make in-situ atmospheric measurements. One of the principal scientific objectives of the Pioneer Venus (P/V) multiprobe mission is the determination of the structure and composition of the Venusian atmosphere down to the planet surface. To enhance the science return it is of paramount importance to be able to accurately determine the spacecraft entry trajectories. In addition to the in-situ spacecraft measurements, earth-based Doppler data are available. The process felt to be most applicable for the P/V multiprobe entry trajectory reconstruction is considered, with emphasis placed on the highly dynamic upper entry segment of the trajectory.

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