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Re: Transit times between L4 and Moon/L5 and Moon

by Dr J R Stockton <jrs@[EMAIL PROTECTED] > Jan 20, 2008 at 07:07 PM

In rec.arts.sf.science message <fe41b5bc-f8e5-4ddb-90ad-8c35c9d0f971@[EMAIL PROTECTED]
>, Sat, 19 Jan 2008 14:47:46,
"alanmc95210@[EMAIL PROTECTED]
" <alanmc95210@[EMAIL PROTECTED]
> posted:
>
> I figure  the fastest route between the two would be a trip to earth
>orbit and back to the second  Lunar point.
>

Incorrect.

The potency of the drives is not specified.

The fastest route, given suitable drives, is to accelerate
instantaneously to 0.99999999...c directly towards the other L point,
and to decelerate instantaneously on arrival after about 1.3 seconds.

The original question is inadequately specified.



The lowest-energy route is to apply a small impulse forwards or
backwards and almost exactly along the line of the orbit, such that when
the ****p p***** the Moon its radial component of velocity is reversed so
that it will in mirror-image fa****on reach the other L-point.

Much too small an impulse and the ****p will do lunar lithobraking;
otherwise, too small and it will be deflected too much, too large and it
will be deflected insufficiently.

-- 
 (c) John Stockton, Surrey, UK.  ?@[EMAIL PROTECTED]
   Turnpike v6.05  
MIME.
 Web  <URL:http://www.merlyn.demon.co.uk/>
- FAQqish topics, acronyms &
links;
  Astro stuff via astron-1.htm, gravity0.htm ; quotings.htm, pascal.htm,
etc.
 No Encoding. Quotes before replies. Snip well. Write clearly. Don't Mail
News.
 




 14 Posts in Topic:
Transit times between L4 and Moon/L5 and Moon
Aztec50 <fasgard66@[EM  2008-01-17 07:06:57 
Re: Transit times between L4 and Moon/L5 and Moon
"Mike Combs" &l  2008-01-17 12:51:31 
Re: Transit times between L4 and Moon/L5 and Moon
Robert Martinu <invali  2008-01-18 16:13:06 
Re: Transit times between L4 and Moon/L5 and Moon
"Mike Combs" &l  2008-01-18 14:30:05 
Re: Transit times between L4 and Moon/L5 and Moon
Erik Max Francis <max@  2008-01-23 01:39:45 
Re: Transit times between L4 and Moon/L5 and Moon
"Mike Dworetsky"  2008-01-18 08:00:05 
Re: Transit times between L4 and Moon/L5 and Moon
Dr J R Stockton <jrs@[  2008-01-18 22:27:15 
Re: Transit times between L4 and Moon/L5 and Moon
"alanmc95210@[EMAIL   2008-01-19 14:47:46 
Re: Transit times between L4 and Moon/L5 and Moon
Erik Max Francis <max@  2008-01-23 01:41:42 
Re: Transit times between L4 and Moon/L5 and Moon
"alanmc95210@[EMAIL   2008-01-19 15:04:40 
Re: Transit times between L4 and Moon/L5 and Moon
Dr J R Stockton <jrs@[  2008-01-20 19:07:45 
Re: Transit times between L4 and Moon/L5 and Moon
"alanmc95210@[EMAIL   2008-01-21 07:44:42 
Re: Transit times between L4 and Moon/L5 and Moon
Erik Max Francis <max@  2008-01-23 01:37:45 
Re: Transit times between L4 and Moon/L5 and Moon
Tim Little <tim-news@[  2008-01-28 04:42:47 

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tan13V112 Thu Jul 24 13:19:59 CDT 2008.