Friday, June 20, 2008

Balance Is A Process (Bombs and Rockets)

BALANCE IS A PROCESS
1.1 In physics class my professor taught us that missiles and bombs and arrows all have tail fins to create drag. Without fins, the back end would have the tendency to try and overtake the front end causing the missile to turn in mid air. Because the front end blocks the wind as the missile travels through the air the back end experiences less friction. With fins at the back end of the missile, friction is created which helps to slow the back end down enough that it stays behind the front end.
1.2 Imagine making a rocket. On our first attempt we don’t add fins and during the launch, it tips over at some point. So we add fins to the back end because we realize we have to slow the back end down. But then we find the fins slow it down too much because we made them too big. So we make them smaller. Now the rocket can achieve escape orbit and launch our satellite into space. (oops, sorry, did I forget to mention the payload?)
1.3 When we attempted our first launch the rocket tipped over. We could say it wasn’t balanced. Why? Because the back end didn’t line up with the front end. When we launched the second rocket the back end did line up with the front end but we didn’t achieve orbital altitude before our fuel ran out. So we had balance in one aspect but we needed to refine it. Finally, third attempt, success. Balanced, the front aligned with the back and we did what we wanted to, we got the thing into space.
1.4 Balance is maintaining a relationship, by adjusting the forces that affect that relationship and it is adjusting the relationship to minimize the unwanted affects of those forces. With the rocket balance was not eliminating drag, it was reducing drag just enough by making the fins small enough that they helped orient the rocket without slowing it down.

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