Back to Home

Blackholes Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | Blackholes I | Post

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
No Fakes, Sorry.

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Alexander on February 24, 2001 21:17:27 UTC

Tsiolkovsky derived in early 20 century equation for accelerated by reactive propultion body:
v=vexaustln(mo/m), where vexaust is the velocity of burning fuel exaust gases, mo is initial mass of rocket, and m -its final mass (payload).

Plugging typical exaust velocity 2 miles/sec and typical ratio of fuel-to payload masses in 20-30 range, you get velocity of a rocket in 6-7 miles per second range which is about 35,000 - 40,000 km/h, and is more than enough to circle the Earth.

More fuel will bring you to Moon, Mars, etc.

It seems that the guy who claims the opposite on that web site needs to learn a little more mechanics.

Follow Ups:

    Login to Post
    Additional Information
    About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
    Unless otherwise specified, web site content Copyright 1994-2023 John Huggins All Rights Reserved
    Forum posts are Copyright their authors as specified in the heading above the post.
    "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET"
    are trademarks of John Huggins