You can make a stand, this will stable the rocket and allow it to stand up-right.
to make it stand up
You can make a soda bottle rocket.
alkaselser and water
by water being placed into the bottle and then, when you launch your rocket, the rocket will spin (if it has at least 2 fins) and the water will spurt out and make the rocket go higher in the air. (Tip:the more it spins,the higher it will fly)
Water, an empty plastic bottle and an air pump.
Make sure there is no one around you and to stand far back and to make sure it is straight up if not them it will end up flying in a different direction.
If you are in Science Olympiad, a bottle rocket is a modified 2 liter bottle designed to stay up in the air longer than its competitors. Another type of bottle rocket is a type of firework you place in a bottle to make it launch.
you put some water in the bottom of your rocket/bottle and get a bicycle pump keep pumping air in to the rocket sets off and make sure you watch your face they can be highly dangerous! hope this helps
make sure there is no one around you and to stand far back and to make shore it is strait up if not them it will not end up flying in a different direction
take 2 l. bottle cut the bottom of a bottle off put the 2 bottles together take a piece of balsa wood and make the wings fill the bottom part of the water rocket with paper put the wings on the bottle rocket cut a circular cup in half put a tennis ball on the cup
it pushes the rocket into the air to make it go higher.
Get some cardboard, make a cone, and tape it to the top of the bottle.