What's the best way to make a bottle rocket?

Question

using water and air pressure.

Answer 1

Take a plastic bottle and cut the bottom off of it.Then take the cap off of the bottle and place the bottle in a pan with just a little bit of water in it then cut a small hole in the cap of the bottle.and place a black cat or other explosive fire work in your cut hole.then put the cap back on the bottle and firmly place the fire work in the hole you cut and light it and run.My method is the cheapest I used to do it all the time when I was a kid.

Answer 2

Hm, not sure about that last one - once you're using flammable stuff it can be pretty dangerous. I know someone who blew off his finger that way...

Answer 3

the first answerer is right but i tried it for a project....

it went bad

cuz u gotta do it all quick

and even if u do it quick and close it,

when u open it, it will shoot out and might burn u

it happened to me

just take a straw and put it in the bottle whith it sticking out...

block the rest of the hole with duct tape, holding them together...

then take another straw and put it into the first one....

blow into it alot

then when u think u have enough air into it....

push with great force on the bottle and the straw will shoot out

its a good project

Answer 4

Get a water cooler bottle

set up as per usuall bottle rocket. 1/3 water ect

Instead of a foot pump use an industrial air compressor, (in a very wide open space)

Stand well back, avoid oncoming air craft

Release mechanism i leave up to you.

This goes very high and very fast, also comes down hard.

Some fins are probably necessary.

Answer 5

Get a drum/bottle of water about 1/3 full.

Put a lid over the top.

Cut small hole in the lid.

Insert tubing.

Turn upside down.

Pump air into the tubing with hand pump.

When the pressure builds up the drum will take off.

Depending on the size of the drum/bottle  it can reach about 80 feet high

Answer 6

Combine baking soda and vinegar in a wine bottle, then put the cork back on. The cork should come shooting up due to the carbon dioxide in the bottle.

Answer 7

Get a long straight stick some model rocket engines and the igniter, duct tape the engine to the stick hook up the igniter to the engine and launch. If you want a big boom get an empty co2 canister fill it with match heads or picalo pete powder stick a fuse in it put the co2 with wick on the engine tape it and launch.