Approach guidance for outer planet pioneer missions

Details Approach guidance for outer planet pioneer missions Approach guidance for outer planet pioneer missions

May 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975stin...7524786b&link_type=abstract

Unknown

Physics

Approach Indicators, Guidance Sensors, Pioneer Project, Spacecraft Guidance, Spin Stabilization, Star Trackers, Uranus (Planet)

Scientific paper

Onboard optical approach guidance measurements for spin-stabilized Pioneer-type spacecraft are discussed. Approach guidance measurement accuracy requirements are outlined. The application concept and operation principle of the V-slit star tracker are discussed within the context of approach guidance measurements and measurables. It is shown that the accuracy of onboard optical approach guidance measurements is inherently coupled to the stability characteristics of the spacecraft spin axis. Geometrical and physical measurement parameters are presented for Pioneer entry probe missions to Uranus via Jupiter or Saturn flyby. The impact of these parameters on both sensor instrumentation and measurement system design is discussed. The need for sensing extended objects is shown. The feasibility of implementing an onboard approach guidance measurement system for Pioneer-type spacecraft is indicated. Two Pioneer 10 onboard measurement experiments performed in May-June 1974 are described.

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