Water Rocket

1
Water Rocket
2
The Basic Design
3
Newtons 3rd Law

• For every action there is an equal and opposite
  reaction

4

• a. the bottle, a standard 2L bottle of any shape
  or color CAN NOT BE MODIFIED IN ANY WAY
• b. the nose cone, contains the recovery system
• c. recovery system
• d. fins add to the stability of the rocket, 3 or
  4 work fine

5
First Launch

• the objective of this event is to get your rocket
  to stay up as long as possible.
• Height
• recovery system.

6
Hints

• Height- The most common misconception is that the
  lighter a rocket is, the higher it will go. This
  is not fully true. To achieve maximum height you
  must have stability.
• Fins

7
Fins

• The use of fins and addition of nose mass can
  produce aerodynamically stable rockets which pass
  through the air in a straight line in a
  continuous orientation.
• The most important thing is to minimize the drag
  they create, by keeping them small and also thin
• The further towards the rear fins are placed, the
  more effective they are. Small fins far back may
  be as effective as larger fins further forward.

8

• Recovery systems- By far the most commonly used
  (and won with) recovery system is the parachute.
• Most are circular
• Lighter is better

9
Parachute Deployment

• This design uses the fact that the rocket tips
  over at apogee to make the nose cone fall off.
• nose cone that fits very loosely
• the tipping of the rocket separates the nose cone
  and body.
• getting the parachute out of the nose cone.
• a smaller parachute attached to the larger
  parachute.
• Add talc powder to the parachute allowing it to
  leave the nose cone with less friction

10
Good Design

• Well placed fins
• Impact-resistant nose A tennis ball or foam

11
2008 Schedule

• Design and list materials needed
• Friday Build- 1 hour.
• Friday Afternoon First Launch
• Monday Rebuild- 1 hour.
• Monday Afternoon Second Launch

12
2007 Schedule

• Design and list materials needed
• Tuesday Build- 1 hour.
• Tuesday Afternoon First Launch
• Wednesday Rebuild- 1 hour.
• Wednesday Afternoon Second Launch