Help with multistage balloon-tipped water missile
I'm designing the perfect water weapon of mass soakage-the super water missile, and I'm shifting my attention to multistage water rocket thrust systems. My finished product will hopefully be able to reach high altitudes, acheive moderate horizontal distance, and either drop many water balloons over a specified target area, or be tipped with a very large water balloon for a "wet impact" (very wet). I don't know how multistage water rockets operate though, and there are no instructables on how to build them. I searched Google, and all I got was pictures. No DIY's, how-to's, or tutorials. Could anyone tell me (or better yet-show me) how to make a multistage water rocket-or at least how they operate?