Other
Scientific paper
Oct 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990dres.iafcy....b&link_type=abstract
IAF, International Astronautical Congress, 41st, Dresden, Federal Republic of Germany, Oct. 6-12, 1990. 7 p. Research supported
Other
Balloon Flight, Lifting Bodies, Mars Atmosphere, Temperature Control, Ballooning Modes, Carbon Dioxide, Helium Compounds, Solar Radiation Shielding
Scientific paper
A solar-balloon (SB) system was geometrically optimized using published data on the ambient conditions on Mars, yielding, as a result, a design of a one-body SB system with an integrated hermetically sealed helium lifting balloon. The SB shape is similar to a Cassinian curve. The maximum diameter is 93.6 m, and maximum height is 122.3 m. Kapton with golden, black, and transparent surface coatings was selected as the balloon's envelope material. Fifty four percent of the total volume is occupied by CO2. The thermal control problem is investigated using a thermal node model with 24 isothermal nodes, with eight of the nodes for He gas, and four for CO2. Calculations are performed for both cases of thermal balance: the steady-state thermal process and the unsteady state process.
Brockhagen D.
Hallmann W.
Reinartz M.
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