"King_Sturd's Rocket"



Step 1: Define the Problem:

  • We must be able to design a rocket that is propelled by water and it must stay in the air for the longest time.

Step 2:Brainstorming:

  • I had to create multiple test rockets and then had to decide which one looked the best and performed the best.

Step 3: Research: Notes For TED Bottle Rockets

  • Rockets started out with a stick and the use of gunpowder and have slowly been evolving since then. The V-2 rocket was the first rocket that was actually designed to go into space.
  • Apollo 11 astronauts - the first humans to walk on the moon - were successfully launched with a Saturn V rocket.
  • The V-2 rocket used a liquid fuel consisting of alcohol and liquid oxygen.
  • Goddard was the first to launch a rocket using a liquid fuel source.
  • Drag- is created by air resistance. When a rocket flies through the air, drag pushes back - or resists the rocket's forward motion. A rocket's drag is affected by shape, texture, velocity, as well as other factors.
  • Lift- Lift is a side force used to stabilize and control the direction of flight.
  • Thrust- is the force that produces lift-off, or upward movement of a rocket. Thrust is produced by engines or some other form of propulsion system. For lift-off to be achieved, thrust must exceed weight.
  • Weight- the weight of a rocket and can include cargo, passengers, fuel, parts of the rocket, materials, and other items. Weight is related to mass, but also includes the gravitational pull of the Earth.
  • You most definitely have to put gravity into perspective when you are building the rocket.
  • Longitudinal axis runs up and down the center of the rocket. Lateral axis runs side to side on the rocket.
  • The structure of the rocket typically consists of a nose cone, body, frame, fins, and other components depending on how the rocket will be used.
  • The Troposphere is the first layer of the atmosphere.
  • The Stratosphere is the second layer of the Earths atmosphere.
  • The Mesosphere is the third layer of the Earths atmosphere.
  • The Ionosphere is the fourth layer of the Earths atmosphere.
  • The Exosphere is the fifth and final layer of the atmosphere.
  • An object in motion tends to stay in motion unless acted upon by another force.
  • The purpose of Thrust is to maximize rocket velocity.
  • Momentum= Mass x velocity.
  • When the rocket starts in the upward motion then water begins to burst out hitting the ground therefore sending the rocket into the sky. Depending on how the rocket is built and how much water in it will decide how high it will go.
  • Air Density changes with altitude.
  • Drag increases with the square of velocity.
  • The frontal area is the area of the geometry you would see if the rocket were coming right at you.
  • Drag = .5 x air density x velocity2 x frontal area x coefficient of drag.
  • The coefficient of drag is a pretty complicated variable involving the shape of the rocket moving through the air. You can control the coefficient of drag by adjusting the shape of the transition cone.
  • The way to change your frontal area is to use a different size bottle.
  • It is crucial that a rocket maintains a straight path on a flight so that it can go the maximum distance.
  • mass = density x volume
  • The center of pressure is located where the surface area at the nose of the rocket is equal to the surface area at the tail of the rocket.
  • controlling stability around the pitch and yaw axes is to control the location of the center of gravity and center of pressure.

Step 4: Identifying Criteria and Constraints

The rocket must be in the weight limit.

The rocket also has to stay in spec the entire time

Parachute size has to be limited and cant be too big.

Step 5: Exploring Possibilities

During all the rocket preparation I had the chance to use white box learning where I got to explore many different possibilities for rockets. This cite was amazing cause I could actually see what rockets performed and which ones didn't

STEP 6: Selecting and Approach

  • The Nose of the rocket was too big at one point
  • I didn't have enough weight
  • Parachute was too big
  • Fins were adding too much weight
  • This is my best design, I mean I am on the top 10 soooo..

Step 7: Developing A Design Proposal

There are many different requirements that we had to meet for the design of our rocket.

  • Nose Length
  • Transition Cone Length
  • Parachute Size
  • Fins
  • Weight

Step 8: Making A Model Or Prototype:

While I was the making my model I had many different complications.

  • Getting my parachute to go in the tube
  • Getting my fins to stay
  • Finding the right weight for the ball on top
  • Getting the color I wanted for my rocket

Step 9: Testing and Evaluating Design

We tested my rocket and it stayed in the air for a little over 7 seconds. It was a really good test. My parachute did not deploy but overall my rocket was a huge success.

Step 10: Refining the Deisgn

After the test there was not much that I could do because there was not a whole lot of the rocket left. So there was not any refinements to the rocket.

Step 11: Mass Production

There would be a lot that would have to be done for this rocket to be put out on the market.

  • Money
  • Time
  • Labor
  • Materials

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