Design-wise the fins help dissipate the heat generated from firing a rocket out a tube. Without them, the missile launcher's back end would melt down after just a few launches. Think of them as air-cooled radiator fins and you will be on track.
If the rocket is generating such large amounts of heat at ignition, what is going to happen to your face when it leaves the tube?
Real world launchers use 2 motors: A small one to get the rocket out of the tube and a safe distance away before the main motor ignites. They work this way because of the reason above. The fins are there because they look cool.
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Real world launchers use 2 motors: A small one to get the rocket out of the tube and a safe distance away before the main motor ignites. They work this way because of the reason above. The fins are there because they look cool.
Nice!