Re: what is orbital speed around the moon?

On Tue, 28 Aug 2007 21:36:43 GMT, in a place far, far away,
fairwater@xxxxxxxxx (Derek Lyons) made the phosphor on my monitor glow
in such a way as to indicate that:

Pat Flannery <flanner@xxxxxxxxxx> wrote:



Derek Lyons wrote:
rocket boosted artillery shells have been around for years.


I shouldn't have to point out that size matters.


The Germans got up to the 280 mm K5E railway gun size with their
rocket-boosted shells.
They even looked into a rocket boosted shell for their 800 mm "Gustav"
super railway gun.

Sure - but how big were those motors compared to a useful
circularization motor?

You don't need to circularize--just get into an orbit. In theory, if
you fired horizontally from a high mountain top, and give it a kick at
apolune, you'll raise perilune sufficiently to have an orbit. At
least for a while, until the mascons getcha. Of course, you'd still
have to have an ACS system to ensure that you fired in the right
direction at the top...
.

Relevant Pages

  • Re: what is orbital speed around the moon?
    ... Derek Lyons wrote: ... The Germans got up to the 280 mm K5E railway gun size with their ... They even looked into a rocket boosted shell for their 800 mm "Gustav" ...
    (sci.space.history)
  • Re: what is orbital speed around the moon?
    ... Derek Lyons wrote: ... The Germans got up to the 280 mm K5E railway gun size with their rocket-boosted shells. ... They even looked into a rocket boosted shell for their 800 mm "Gustav" super railway gun. ...
    (sci.space.history)