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Re: Are Space Flights Always Limited to the Solar System Plane?

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Dne 15/07/2017 v 01:14 F. Russell napsal(a):
> On Fri, 14 Jul 2017 08:10:07 -0400, Wally W. wrote:
> 
>>
>> Why do you have a "goal" of doing it again?
>>
> 
> I have no goal.  I am merely speculating on how it could
> be done if it ever became a goal.
> 
> How much fuel would it require to cancel a 30km/sec velocity
> component?
> 
See the Ciolkovski equation [1]

 delta_v = v_e * ln ( m0 / m1 )

delta_v is speed difference
v_e is the rocket engine nozzle gas speed
m0, m1 are anitial and final rocker ( stage ) mass.

Nozzle speed is typically 2-3 km/s [2]

For 1 stage rocket,
For v_e= 3 km/s , 30 km/s difference and 10 ton of total final mass,
( useful cargo would be much less )
we need. 10 * exp ( 30/3) = 220 000 tons.

For 2 or 3 stage, it would be better, but not dramatically.

For comparison, Saturn V, used in the Apollo program,
had about 3 000 tons.[3].

Not funny. :-)

[1] https://en.wikipedia.org/wiki/Tsiolkovsky_rocket_equation
[2] https://en.wikipedia.org/wiki/Rocket_engine_nozzle
[3] https://cs.wikipedia.org/wiki/Saturn_V

-- 
Poutnik ( The Pilgrim, Der Wanderer )

A wise man guards words he says,
as they say about him more,
than he says about the subject.

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Are Space Flights Always Limited to the Solar System Plane? "F. Russell" <fr@random.info> - 2017-07-13 18:45 +0000
  Re: Are Space Flights Always Limited to the Solar System Plane? Poutnik <poutnik4nntp@gmail.com> - 2017-07-13 21:18 +0200
  Re: Are Space Flights Always Limited to the Solar System Plane? Mahipal <mahipal7638@gmail.com> - 2017-07-13 13:32 -0700
    Re: Are Space Flights Always Limited to the Solar System Plane? "F. Russell" <fr@random.info> - 2017-07-13 21:15 +0000
      Re: Are Space Flights Always Limited to the Solar System Plane? Serg io <invaalid@invalid.com> - 2017-07-13 16:22 -0500
        Re: Are Space Flights Always Limited to the Solar System Plane? Serg io <invaalid@invalid.com> - 2017-07-13 16:33 -0500
          Re: Are Space Flights Always Limited to the Solar System Plane? "F. Russell" <fr@random.info> - 2017-07-14 00:14 +0000
            Re: Are Space Flights Always Limited to the Solar System Plane? Serg io <invaalid@invalid.com> - 2017-07-13 19:46 -0500
            Re: Are Space Flights Always Limited to the Solar System Plane? Poutnik <poutnik4nntp@gmail.com> - 2017-07-14 07:30 +0200
              Re: Are Space Flights Always Limited to the Solar System Plane? "F. Russell" <fr@random.info> - 2017-07-14 09:03 +0000
                Re: Are Space Flights Always Limited to the Solar System Plane? Poutnik <poutnik4nntp@gmail.com> - 2017-07-14 12:21 +0200
            Re: Are Space Flights Always Limited to the Solar System Plane? Wally W. <ww84wa@aim.com> - 2017-07-14 08:10 -0400
              Re: Are Space Flights Always Limited to the Solar System Plane? "F. Russell" <fr@random.info> - 2017-07-14 23:14 +0000
                Re: Are Space Flights Always Limited to the Solar System Plane? Poutnik <poutnik4nntp@gmail.com> - 2017-07-15 11:04 +0200
                Re: Are Space Flights Always Limited to the Solar System Plane? Poutnik <poutnik4nntp@gmail.com> - 2017-07-15 11:23 +0200
                Re: Are Space Flights Always Limited to the Solar System Plane? Poutnik <poutnik4nntp@gmail.com> - 2017-07-15 13:34 +0200
                Re: Are Space Flights Always Limited to the Solar System Plane? "F. Russell" <fr@random.info> - 2017-07-15 12:55 +0000
                Re: Are Space Flights Always Limited to the Solar System Plane? Poutnik <poutnik4nntp@gmail.com> - 2017-07-15 15:18 +0200
                Re: Are Space Flights Always Limited to the Solar System Plane? Poutnik <poutnik4nntp@gmail.com> - 2017-07-15 16:14 +0200
      Re: Are Space Flights Always Limited to the Solar System Plane? Mahipal <mahipal7638@gmail.com> - 2017-07-13 19:26 -0700
        Re: Are Space Flights Always Limited to the Solar System Plane? "F. Russell" <fr@random.info> - 2017-07-14 09:11 +0000
          Re: Are Space Flights Always Limited to the Solar System Plane? Mahipal <mahipal7638@gmail.com> - 2017-07-14 04:09 -0700
            Re: Are Space Flights Always Limited to the Solar System Plane? Edward Prochak <edprochak@gmail.com> - 2017-07-14 05:22 -0700
              Re: Are Space Flights Always Limited to the Solar System Plane? Mahipal <mahipal7638@gmail.com> - 2017-07-14 06:33 -0700
            Re: Are Space Flights Always Limited to the Solar System Plane? fr314159@gmail.com - 2017-07-14 07:30 -0700
              Re: Are Space Flights Always Limited to the Solar System Plane? Mahipal <mahipal7638@gmail.com> - 2017-07-14 08:05 -0700
                Re: Are Space Flights Always Limited to the Solar System Plane? Serg io <invaalid@invalid.com> - 2017-07-14 11:50 -0500
      Re: Are Space Flights Always Limited to the Solar System Plane? Poutnik <poutnik4nntp@gmail.com> - 2017-07-14 06:43 +0200
  Re: Are Space Flights Always Limited to the Solar System Plane? "Dave" <dave1981@hotmail.com> - 2017-07-15 07:10 -0700
    Re: Are Space Flights Always Limited to the Solar System Plane? Poutnik <poutnik4nntp@gmail.com> - 2017-07-15 16:18 +0200
  Re: Are Space Flights Always Limited to the Solar System Plane? "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-07-15 13:56 -0700
    Re: Are Space Flights Always Limited to the Solar System Plane? "hanson" <hanson@quick.net> - 2017-07-15 17:16 -0700

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