Re: Helios never made it to 100,000 ft altitude.

Space/Science » in reply to Re: Helios never made it to 100,000 ft altitude.

RobVG — 5/20/2002 5:04:18 PM (archived)

When you were thinking about balloons not working, were you considering the surface atmospheric pressure? Mars~ 6 and Earth = 1013 milibars.

I never really thought about it but a balloon must rise like a bubble in water.

Buoyancy?

The volume of gas in the balloon must be sufficient to overcome the gravity of the container. Gravity is less on Mars so the balloon has that going for it.

I wish I could do the math. It would be fun to see the configuration of a practical Martian observational balloon- if it is practical.

The whole thread (24 posts)

I'd give a second vestigial organ to see this work - SM - 5/18/2002 6:13:43 PM
- What, precisely, is a "second vestigial organ"? - Bowser - 5/20/2002 4:41:55 PM
  - Re: What do you mean - SM - 5/20/2002 4:58:42 PM
  - Left nut. (n/t) (n/t) - RobVG - 5/20/2002 4:46:35 PM
    - That's "vestigial"? - Bowser - 5/21/2002 3:18:15 PM
      - Re: Wisdom teeth, tonsils, appendix, tailbone, etc. - SM - 5/21/2002 6:17:22 PM
      - Re: That's vestigial? - RobVG - 5/21/2002 5:52:37 PM
      - I think it was supposed to be a mild putdown (n/t) (n/t) - Tom Brosz - 5/21/2002 4:08:58 PM
- Re: I'd give a second vestigial organ to see this work - Chris Vancil - 5/19/2002 7:09:16 PM
  - Re: I'd give a second vestigial organ to see this work - SM - 5/19/2002 8:00:38 AM
    - Re: I'd give a second vestigial organ to see this work - Chris Vancil - 5/19/2002 9:45:27 AM
      - Re: Helios never made it to 100,000 ft altitude. - SM - 5/19/2002 10:12:18 AM
        
        Re: Helios never made it to 100,000 ft altitude. - RobVG - 5/20/2002 5:04:18 PM
        
        Re: Buoyancy is easy - SM - 5/20/2002 7:44:19 PM
        
        Re: Buoyancy is easy - Chris Vancil - 5/20/2002 9:16:43 AM
        
        Re: Helios never made it to 100,000 ft altitude. - Chris Vancil - 5/19/2002 6:29:27 PM
        
        Re: A balloon would be better, but I still like the Entomopter - SM - 5/20/2002 4:36:35 PM
        
        Re: A balloon would be better, but I still like the Entomopter - Chris Vancil - 5/20/2002 8:44:11 AM
- Fun idea. - Bowser - 5/19/2002 3:23:26 PM
  - Re: Mars Atmosphere - SM - 5/19/2002 5:24:56 PM
- Fixed Wing Will Work On Mars - Mark Eby - 5/19/2002 2:13:03 PM
  - Re: Fixed wing will NOT work on Mars - SM - 5/19/2002 2:32:30 PM
    - Read It Again - Mark Eby - 5/19/2002 2:39:28 PM
      - Re: Oh yeah. You're right. My mistake. nt - SM - 5/19/2002 3:25:17 PM

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