How do you put a parachute on a bottle rocket?
The best method is to tape the parachute to the side of the
bottle and stuff it inside of the nose cone. The nose cone should
have string connecting it to the rocket, yet, the nose cone is not
actually taped to the bottle. It should balance on: a) Tabs
(Cardboard) b) Just have it firmly on top of the top of the bottle
This way, the rocket will soar straight up (hopefully), the nose
cone will detach (but stay connected), the parachute will fill up
with air and expand, and your successful rocket will sink to the
ground at about 2-6 mph.