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Utilization of Liquid Carbon Dioxide for Planetary Exploration

by Nobuki Kawashima, The Inst of Space and Astronautical, Science, Kanagawa, Japan,
Ei-ichi Mizuno, The Inst of Space and Astronautical, Science, Kanagawa, Japan,
Kazuya Takeda, The Inst of Space and Astronautical, Science, Kanagawa, Japan,
Masaki Kojima, The Inst of Space and Astronautical, Science, Kanagawa, Japan,



Document Type: Proceeding Paper

Part of: Engineering, Construction, and Operations in Space IV

Abstract:

The major component of the atmosphere of Venus and Mars is carbon dioxide CO₂. This proposal is to use this carbon dioxide for planetary exploration by liquefying it. Liquid CO₂ has a latent heat of 198 kcal/kg and it can be used to cool a spacecraft which stays in a hot environment such as near the surface of Venus. One plan is composed of Mother-daughter configuration. Mother spacecraft is a balloon which stays at an altitude of 50-60 km. There CO₂ is liquefied. The daughter spacecraft which is connected by a tether wire goes down to near the surface of Venus carrying the liquid CO₂.

Subject Headings: Aircraft and spacecraft | Carbon dioxide | Space exploration | Soil liquefaction | Wind engineering | Thermal analysis | Aerospace engineering

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