How to Make a Bottle Rocket

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How to Make a Bottle Rocket
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You will need2soda bottles to make1rocket!
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Cut one bottle in half

• Use tape to make a line around the center of the
  bottle.
• Then cut around the edge of the tape

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Now you have 2 halves!
This is where the parachute will go.
This is where the egg will go.
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FINS

• Fins are the guidance system for your rocket.
  Without them a rocket would tumble end over end.
  Fins can give your rocket life and beauty. Fins
  can portray aggressive power or aerodynamic
  grace. However, fins tend to be the single
  greatest downfall of many young rocket builders.
  With the incredible speeds and frightful
  acceleration generated at launch, many fins get
  ripped off the rocket body within a fraction of a
  second.

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How many fins do I need??

• To ensure stability and safety, the minimum
  number of fins on a rocket is three (3). Many
  people choose a 3 or 4 fin design. There is no
  maximum number of fins you may have but keep in
  mind that the more fins you have the more drag
  you will create and drag slows a rocket down.

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Attaching the Fins

• Look at your fin. Make sure it doesn't curve or
  it isn't crooked. It should be in a direct line
  with the body of your rocket. If it isn't
  perfect, take it off and try again.?
• Use a marker to draw lines on your bottle where
  the fins will go.
• Your teacher will spread the glue on the lines.
• Everyone will use Liquid Nails to attach Fins

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Some fin designs
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Recovery system (aka parachute)

• You will receive a 1m2 square sheet of plastic
• You may cut the parachute into any shape.
• You may make as many as you want..BUT the more
  parachutes..the more can go wrong!

Shroud lines need to be as least as long as the
diameter of your parachute!
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How to attach the shroud lines

• Use tape and a hole punch reinforce the holes on
  your parachute
• Then attach the string by tying knots

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How to attach chute

• Use a marker to show your teacher where to drill
  holes to attach the chute.

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Parachute and shroud lines
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Finished product
Body Egg Chute
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Questions for research

• How will you attach the parachute to the rocket?
• Where will it attach?
• How many shroud lines will you have?
• How will you assure that the parachute will come
  out?