From: christopher.m.jones@gmail.com   
      
   Iain McClatchie wrote:   
   > I was reading yet another web site with the old saw that you can't   
   > turn off a solid rocket motor once it has ignited, save for destroying   
   > the motor.   
   >   
   > Then I stopped to consider the Minuteman or MX.  Both of these   
   > missiles are three-stage solid rockets.  Does either need a   
   > precision thrust cutoff from the third stage (or other two)?  If   
   > not, how do they achieve precision targetting with what must be   
   > a variable delta-V?   
   >   
   > I assume both have some sort of throttleable propulsion on the   
   > bus that delivers the MIRVs.  Is this enough to overcome   
   > uncertainties in the boost delta-V?   
      
   The 4th stages use storable liquid propellant.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)