Venus Strategy for Exploration (1970) / Chapter Skim
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7 AN EXPLORATION STRATEGY
7 AN EXPLORATION STRATEGY
Pages 73-79
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From page 73... ...
In fact, the multiprobe and orbiter missions tend to provide data which are needed for proper definition of the various lander and balloon missions. For this reason it seems cleaL that the first two windows should be reserved for probes and orbiters.
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From page 74... ...
and from ground based radar studies. On the other hand, the data that the probes will deliver concerning cloud composition, illumination conditions below the clouds and on the surface, magnetic fields in and below the ionosphere, seismic noise background (from microbarographs on the probes)
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From page 75... ...
However, because less information will have been provided by earlier studies concerning the solid planet than any other aspect of Venus it would seem most rewarding to reserve the 1978 window to a lander. The mission of this lander should be to studyc the composition of the crust with a gamma-ray spectrometer and neutron source and to measure seismic properties with an active source and a seismic probe.
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From page 76... ...
We note that eventually this sequence of controlled and modest observations can lay the basis for a more ambitious series of probes of the orbiter-lander class. We endorse the concept which the Planetary Explorers express of preparing for such an elaborate venture with a well-thought-out series of preliminary observations carried out with moderate resources.
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From page 77... ...
a 1.3 1 MAIN PROBES Temperature 1.2 1 Pressure 1.3 1 Acceleration 4.0 1 Mass spectrometry (1-140 AMU)
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From page 78... ...
TABLE 10 Lander Payload Experiment Weight (lb) Active seismic experiment 2S-45a Source Seismic instrument Surface composition experiment r\,lS Gamma-ray scintillation spectrometer Neutron source Pressure probes 2.5 Temperature probes aDepending on mission.
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From page 79... ...
We envision taking advantage of this maneuver relatively in the lifetime of the orbiter to ensure accomplishment of other major mission objectives before risking very low periapsis,
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