Alain JUGE : Contribution on water rocket
The body is a simple bottle of 1.25 liter, the empennage is Constituted 3 plastic fins and recovery is ensured by deployable wings.
These deployable wings consist of an edge of attacks made in 6mm aluminum tube of articulated diameter at the base of the nose cone. Wing itself consists of a plastic sheet, glued on one side on the body of the rocket and on the other on the aluminum tube. On this tube the gluing does not go between plastic and aluminum, but plastic goes around tube and is stuck on it same (plastic makes a sleeve in which the tube is slipped). A plastic flap is then glued to the attack edge on the plastic sheet. This component is used to Protect and keep the wing folded during ascending fligth. It is kept closed before takeoff by an inverted T (sketch below).
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![]() Explanatory schema of the photo opposite |