You are going to create a trebuchet and launch projectiles with it.
A trebuchet is a siege weapon used primarily in the middle ages. It uses a lever and a counterweight to gain mechanical advantage to launch a projectile. You are going to build your own trebuchet from materials you “purchase” from RebelTech Hardware. Other than the criteria/constraints below, the design is very much up to you.
You will record everything you do in your design notebook. You may create it by hand, in Word, or both.
It should contain a section for each phase of the design process. The information in the notebook must be organized and placed into the appropriate sections.
The notebook text must in your words – no copy/paste, no word-for-word retyping.
Drawings must be drawn by you from scratch, either electronically or by hand. You may use drawings or plans from the web, but you must redraw them.
Project name and team members’ names.
Description of the project.
Detailed description and history of a trebuchet – what it is, what it was used for, who used it and when, etc.
Definition and description of the mechanical advantage of a lever and how to calculate it.
All criteria and constraints.
Simple sketches of 3 possible designs. Should include all parts and the overall dimensions (L/W/H) of the assembled trebuchet (you don’t need dimensions of each individual part on these).
Evidence of discussion related to the 3 designs, including advantages and disadvantages of each one.
Identification of the design you pick (can be one of the 3 or a combination), reasons why you chose it, and reasons why you didn’t choose the others.
DETAILED drawings of your chosen design. You should at least include separate drawings of: 1) the side view of the trebuchet; 2) the top view of the trebuchet; 3) the trigger mechanism; 4) the sling. Include all parts, the dimensions of all parts, and the overall dimension. These should be neat, professional-looking, and detailed enough that another team could look at your drawings and build it.
Detailed calculation of the mechanical advantage of your designed trebuchet’s throwing arm.
DETAILED step-by-step instructions on how to build your trebuchet. You can do this as you build it.
A test plan that includes a description of each test you do, your expected results, and the actual results.
Description of any changes you had to make to your trebuchet during or after testing.