# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
A surface at t' aft o' a rocket that serves t' stabilize it in flight. Ya scallywag! Fins are usually planar surfaces placed at right angles t' t' body tube.
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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