Bottle Rocket Project
By Matthew Trivette
. Define the Problem
What need or want must be met by the solution?
To see how high you can make a rocket go made out of a two liter bottle
In the space provided, sketch three possible solutions to the given problem. Remember to be creative!
3. Research and Generating Ideas
In the space below, document your research. Be sure to include proper citations at the end of your notes.
Newton’s laws of Motion
- Every object persists in its state of rest or uniform motion in a straight line unless it is compelled to change that state by forces impressed on it.
- Force is equal to the change in momentum (mV) per change in time. For a constant mass, force equals mass times acceleration (F=ma)
- For every action, there is an equal and opposite reaction.
Thrust acts through the center of gravity, and if it can overcome the force of weight will make the rocket go forward
Weight affects how fast your rocket falls down Weight = mass x gravity
Drag happens when something solid passes through a gas or liquid.
Roll is a twisting motion about the roll axis. Roll movement isn’t a problem in a water rocket since it doesn’t change the path of your rocket
Pitch refers to an up and down movement of the rocket's nose
Yaw refers to the side to side movement of the rocket's nose
Recovery is the parachute that comes out so it doesn’t crash and burn
4. Identifying criteria and specifying constraints
What are the criteria and constraints?
20oz, 1L, 2L
Rocket Design Inputs
Number of Fins
Parachute Deploy Status
5. Exploring possibilities
Reflect on your brainstorm ideas and research notes. Generate any additional designs which you feel meet the criteria and constraints in the space below.
My best design was my first one because I didn’t want the other ones to look the same and I couldn’t find a better design for what I was trying to do with my rocket.
6. Selecting an Approach
a. Enter the constraints of the project in the first column.
b. Score each sketch for each constraint. + = 3 pts., √=2 pts., - = 1 pt. c. Total the columns and circle the highest score.
7. Developing a Design Proposal
Take your highest scoring sketch and create working drawings (sketches with dimensions, so that you could build your project). Attach your working drawing
8. Making a model or prototype
In the space below, document (using digital pictures) your construction of the model/prototype. Be sure to include a picture of the final model/prototype.
9. Testing and Evaluating the Design, using specifications
As you create your solution, you will perform tests to make sure that the solution is meeting the needs of the given problem. If you solution does not work, you may need to repeat the previous steps of the Engineering Design Process, until you find a functional design. In the space below, document the type of test you conducted and the results.
Test Performed: a launch
Test Results: were horrible 1 second maybe
10.Refining the Design
Based on your tests, propose refinements to the design and construction of the design problem in the space below.
11. Creating or Making It
If time allows, modify your model/prototype as proposed in refining the design. What additional steps would be necessary to produce this solution for mass market production? we didn't refine them
12.Communicating processes and results
Present your completed design portfolio as an oral presentation to the class.