Model Rocket Fin Set

A model rocket fin set refers to the model rocket fins used for aerodynamic stability of the rocket.

The fins are one of the most important factors in the stability of the model rocket. The fins are typically done in sets of three, which is the minimum required for stability, or sets of four. The fins are placed on the body tube as close to the end with the model rocket engine as possible, and often extend below the bottom of the body tube.

Fins are typically made of plastic or balsa to keep them very light. Plastic fins are typically easier to install on rockets, as they are usually pre-formed into the fin-set which is simply slid over the bottom of the body tube and glued in place. Balsa fins can be shaped to try to minimize drag, which would allow rocketeers to experiment with different fin shapes to see which is the most efficient for rocket flight.