From: jfindley@cinci.nospam.rr.com   
      
   In article , jfmezei.spamnot@vaxination.ca   
   says...   
   >   
   > On 2021-05-30 20:06, Sylvia Else wrote:   
   >   
   > > The moon bus never made sense to me, with suborbital transits seeming   
   > > more practical.   
   >   
   > If gravity becomes low enough, is there a point where small vertical   
   > trusters to maintain low altitude over ground become feasable?   
      
   No.  If you are optimizing the trajectory to be the most efficient,   
   suborbital is always most efficient.   
      
   > If you are doing a survey or search and rescue, you don't want to be   
   > going too fast or too high.   
      
   If that is a hard requirement, then you'd accept the inefficiency.  But   
   that will limit the duration of the trajectory, so the scientists would   
   have to accept that.  The reality is you'd end up with both sides   
   compromising.   
      
   > I take it moon gravity at 1/6s of earth is still too much for such   
   > horizontal travel above ground ?   
      
   It has less to do with the level of gravity than it does with trajectory   
   optimization.   
      
   Jeff   
   --   
   All opinions posted by me on Usenet News are mine, and mine alone.   
   These posts do not reflect the opinions of my family, friends,   
   employer, or any organization that I am a member of.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)