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Balloons on Mars
Jon Berndt schrieb: Is this close to being accurate? I haven't done anything like this in a while. It it not far away, just take a look at the planned Mars balloon mission (page 6): http://www.marssociety.de/archimedes...ES%20ESTEC.pdf Sven |
#2
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Balloons on Mars
Jon Berndt wrote:
[from s.s.shuttle discussion] snip Say the balloon is filled with helium. At the surface conditions of -60 degrees C, and 6 mb pressure, the density of He gas is 0.00184 kg/m^3 (??). The mass of the enclosed Helium would then be 7.7 kg. So, the net buoyant force on Mars would be (83.8 - 7.7) * 3.71 = 282 N (63 pounds). You'd have to account for the weight of the balloon itself, of course. Is this close to being accurate? I haven't done anything like this in a while. Any particular reason you chose Helium? Hydrogen is nonflamable in the martian atmosphere. Your numbers look pretty close, btw. |
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