Introduction: How to Make a Bottle Rocket

 It's simpler then it sounds to make a working bottle rocket and doesn't cost you much money. You only need a few materials. Getting the rocket assembled is easy..but getting the parachute to launch is a bit harder.   

Step 1: Get Materials

Two 2 litter soda bottles.
A Garbage bag or plastic bag (for the parachute)
Duct tape
scissors 
Cardboard or foam core
A Tennis ball 
Dental floss or string 



Step 2: Cut the Bottles

Once you have all your materials get your bottles.
One bottle you're not going to anything to, which will be your bottom bottle that will connect to the launcher.

 The other bottle you're going to cut the top so you have the bottom of the bottle. 

Put the bottles together (DO NOT TAPE THEM) to make sure they're cut right before you move on.

(The picture is what the bottles should look like after you attach the wings and make the parachute.) 

Step 3: Make the Wings

You'll need the bottom bottle, cardboard or foam core, a pair of scissors, duct tape, and if you want a pencil.

Get the cardboard or foam core and cut out a wing that will a good size for the bottle. 

Cut out 3-4 wings that are the same in size. If the size is off it will effect how high the rocket launches. You can make them whatever size you want and whatever shape you want. 

Once the wings are cut out, tape them onto the sides of the bottom bottle of your rocket so it looks somewhat to the picture. Make sure they're taped around the same height because the wings effect the direction and the height of the rocket. 

Step 4: Making the Parachute

Before you finish assembling your rocket you need to make your parachute. You'll need a garbage bag, a tennis ball, scissors, dental floss or string, and a piece of cardboard or foam board.

You can use a garbage bag or a plastic bag. If you use a plastic bag you don't need to cut it but if you use a garbage bag you'll need to cut it so it's smaller, thinner, and it can fit inside your rocket. 

Cut your garbage bag so it's in the shape of a circle. You do this by folding it slightly and then cutting it out. 

No matter what you use you have to cut about 4-6 small holes so you can tie the string to the bag. Then once the string is tied to the bag you cut a hole in the tennis ball so the string can fit through and get to the other side of the tennis ball. Then make a hole in the piece of cardboard or foam so the string can also get through. This will hold the tennis ball and string in place. Then tie the string so the tennis ball stays attached to the bag.


Step 5: Putting the Rocket Together

 Place the bottom part of the bottle on top other bottle.  Make sure the bottom part of your rocket has the parachute with the tennis ball inside. DO NOT TAPE THIS PART! You need to have this some what loose so the parachute will come out of the bottle rocket and land on the ground. 

Once your rocket is together you are now ready to fill it up, half way, with water and launch it.  

Comments

author
darkchocolate510 made it!(author)2015-05-07

I like her name because it reminds me of the tv show

author
BRUNOMARSFANSROCK. made it!(author)2015-11-05

I have a quick question, I am doing this as a school project and we did a test run today and it turned out ok, but i wanted to make it better. So I found this, but I am just wondering, what is the point of the tennis ball? I am having just a little bit of trouble understanding this

author
amber.shaw606 made it!(author)2017-06-05

some schools at certain grades blast water rockets with eggs as cargo. The ball is used for protection for the egg. The whole point is to see which student does not crack their egg.

author
KaylaH25 made it!(author)2016-05-15

It's for the weight, you need some sort of weight to make it I guess more stable

author
demon_pigeon made it!(author)2016-04-04

NO WAY! I'M DOING THIS FOR A SCHOOL PROJECT TOO!

author
disdick made it!(author)2016-11-21

goood succ

author
deeznuts made it!(author)2016-06-03

What are you guys talking about you need to use tissue paper as fins

author
B_roe23 made it!(author)2016-05-25

Hello? It's Me

I've been wondering if after all this time you'ld like to speak

author
KaylaH25 made it!(author)2016-05-15

For the top bottle, when you cut the opening off, do you need to tape it?

author
flittlebit made it!(author)2016-04-26

this is difficult 2 do

author
lava_man made it!(author)2016-04-06

sometimes brothers can be an exception.

#fortune kitten

author
Nageek15 made it!(author)2015-09-11

how do I launch it?

author
demon_pigeon made it!(author)2016-04-05

same here. didn't know at first.

author
demon_pigeon made it!(author)2016-04-05

didn't have duct tape. used regular tape. didn't work this time.

author
Carolina23 made it!(author)2015-10-20

*you

author
demon_pigeon made it!(author)2016-04-04

What the heck does * mean?

author
Paul-soars_JR made it!(author)2016-03-16

Cool!

author
JoshuaS138 made it!(author)2016-02-23

good

author
Carolina23 made it!(author)2015-10-20

how do y do the parachute?

author
ShohiniB made it!(author)2015-10-01

OK can this be launched without the fins?? cause I need this for my project...

author
nailaa made it!(author)2015-05-09

I dont no how to launch it? We use what for launch it??????????????????!!!

author
brayboy2000 made it!(author)2015-09-02

im coin the same thing

author
Ana+Gonzalez made it!(author)2015-05-21

u need to build a bottle rocket launcher

author
brayboy2000 made it!(author)2015-09-02

hey what are u talkin about

author
bmx+madman made it!(author)2015-07-27

rubbing achol and a lighter work good too

author
Karlachen made it!(author)2015-07-09

I made it but how do you launch it

author
KaileyM made it!(author)2014-10-30

What is the tennis ball for?

author
darkchocolate510 made it!(author)2015-05-07

For the parachute

author
Terrelr made it!(author)2014-11-28

how do u make the parachute stay to the bottle so the parachute can land on the ground safely?????

author
daniel.seeley.330 made it!(author)2014-11-13

what does "Then once the string is tied to the bag you cut a hole in the tennis ball so the string can fit through and get to the other side of the tennis ball. Then make a hole in the piece of cardboard or foam so the string can also get through. This will hold the tennis ball and string in place. Then tie the string so the tennis ball stays attached to the bag." mean? What piece of cardboard? What does the piece of cardboard look like? Do you mean one of the cardboard wings on the rocket? There was no instruction for the piece of cardboard that the strings pass through. What is the purpose of this piece of cardboard? Please be more clear if you are giving instructions.

author
josphe made it!(author)2014-11-03

lov itis the parasute suppous to be on the boattle you launch

author
kitty+cat445 made it!(author)2014-04-14

i need facts for a school project, p.s luv ya

author
TrevorN1 made it!(author)2014-10-22

luv ya too

author
JuniorA made it!(author)2014-10-16

how do you launch it up do you just throw it or what

author
kildevil made it!(author)2014-06-06

yeah i still don't get how to launch it after i read this even if it looked good

author
brittne_cain37140 made it!(author)2013-01-15

Is making a bottle rocket okay for a six year old?

author
Tbirdfisher made it!(author)2014-04-26

Absolutely, just have your parents hold it on the launchpad

author
US+Army made it!(author)2013-07-30

I need to make something that does not need a pump or a parachute.

author
ryan1234566 made it!(author)2014-02-20

a paper air plane

author
Tbirdfisher made it!(author)2014-04-26

or matchstick foil rockets

author
minimickey made it!(author)2013-06-19

goood idea so that u can measure the distance
:)

author
herpies+free+since+03 made it!(author)2013-04-02

You be six?

author
chance+boi made it!(author)2013-03-05

how do you launch the rocket

author
Knight612482 made it!(author)2012-06-02

Do you have to have soda or can it be water?

author
jasmin1998 made it!(author)2012-06-03

the bottle can be any kind.
if your talking about the liquid inside it has to be water not SODA.

author
Knight612482 made it!(author)2012-06-09

ok thank u

author
xXInmateXx made it!(author)2010-08-11

How do u launch it?

author
Kiteman made it!(author)2010-06-14



We have a sudden rash of water-rockets. I'm guessing it's a school project?

Have you all seen the relevant groups:

https://www.instructables.com/group/H2Orocketables/

https://www.instructables.com/group/rockets/


About This Instructable

574,013views

38favorites

License:

More by smallville0628:How To Make A Bottle Rocket
Add instructable to: