From: lwcamp@gmail.com   
      
   On Monday, April 17, 2017 at 1:18:20 AM UTC-7, Mr Anderson wrote:   
   > So, that's a development of a little idea I had while asleep, a shoulder   
   launched anti orbital missile, something like thay had in Elysium.   
   > Could it be put into such small package?   
      
   Assuming that you are operating from the surface of an Earth-like planet, and   
   assuming atmospheric drag accounts for 500 m/s from your delta-v, then a   
   delta-v of 3500 m/s will get your payload to an altitude of 500 km.  As   
   mentioned, you don't need to    
   enter orbit, just lob the payload up to an altitude that intercepts your   
   target's orbit and let the target smack into it with its own orbital speed.   
      
   We'll take a total (pre-launch) mass of 20 kg, and assume 3000 m/s for the   
   exhaust speed.  Now the missile can lob 6.2 kg up to 500 km altitude.  That   
   might not guaranteed kill a spacecraft, but is definitely a credible threat.   
      
   If you have 6000 m/s of delta-v you can threaten any spacecraft in low orbit,   
   up to 2000 km altitude.  Restricting yourself to a 20 kg package this gives   
   you a 2.7 kg of empty weight to put in the path of any spacecraft in low orbit.   
      
   This analysis neglects maneuver.  You will want to leave a bit of maneuver   
   reserve so your missile can intercept a jinking target.  This will lower your   
   achievable altitude, with less altitude the more the target maneuvers to avoid   
   your missile.   
      
   Luke   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)