Internal Parts to a Model Rocket

Previously posted to 321rockets.com was the article "External Parts to Model Rockets" and here is the follow up. This article will go into depth about the different internal parts of a model rocket and how they help the rocket fly the way it does. Each part reacts to the other internal parts and to complete a perfect flight each part must be designed and working to its correct specifications.

Recovery Device - In most model rockets the recovery system is a parachute or a streamer which is deployed by the rocket engine. The recovery system helps slow the descent of the rocket, so it lands safely on the ground, making it able to fly again. For heavier rockets parachutes are often used, also when a rocket may be carrying a delicate payload. Lightweight rockets often use a streamer, because they are often more durable and can handle landings easier. A streamer works the same was as a parachute by creating drag and slowing the rocket, however, it does descend a bit faster than a parachute.

Recovery Wadding - The recovery wadding is a material that has been treated with a special chemical that protects the parachute from burning. DO NOT make the mistake of assuming the recovery wadding is just tissue paper. The paper put in must be fire retardant, other wise the rocket's ejection charge from the rocket engine will melt the parachute.

Engine Mount - The engine mount is designed to hold the rocket engine firmly in place. The mount holds the rocket engine aligned with the centerline of the rocket, making the rocket launch straight and accurate. There are several components that hold the rocket engine in place, including the centering rings, engine mount tube and the engine hook.

Without all these pieces in strategic places, the rocket will fly unstable and may not come back to earth in one piece. All the components listed above must be in working condition to have a model rocket successfully launch and return to ground.