Catapult Project
By: Nicole Worytko
Avani Patel
Brian Prohaska
Kyle Hughes
Agenda
1. Team Development
2. Problem Statement
3. Background/Justification
4. Scope
5. Brainstorming
6. Research and Generate Ideas
7. Criteria and Constraints
8. Explore Possibilities
9. Select Approach
10. Design Proposal
11. Prototype
12. Test and Monitor
13. Refine
14. Lessons Learned
15. Summary
Roles
• Leader: Brian Prohaska
• Scribes: Avani Patel & Nicole Worytko
• Time Keeper: Kyle Hughes
Constitution
– Stay Focused
– Respect others
– Be open to new ideas
– No idea is a bad idea
– Listen to others while they are talking
Timeline
Plan Date
Start
Comp
Act. Date
Start
Responsibility
Task
Comp
03/29 03/29 03/29 03/31
Team
Brainstorming
04/02 04/02 04/12 04/12
Avani
Explore Possibilities
04/05 04/05 04/13 04/14
Team
Select Approach
04/06 04/14 04/12 04/19
Brian/Kyle
CAD Drawings
04/16 04/26 05/01 05/15
Team
Build Catapult
04/29 05/04 05/17 05/18
Team
Test & Monitor
05/05 05/07 05/18 05/18
Team
Refine
03/18 05/14 03/18 05/20
Avani/Nicole
Tech Report
04/01 05/14 04/20 05/17
Nicole/Avani
PowerPoint
05/19 05/20 05/19 05/20
Team
Review
Problem Statement
Our group is working for Middle
Ages military manufacturer in
Europe. Have been asked to
design catapult that will throw
tennis balls further than any
other. For King’s safety,
catapult will be operated from
distance of at least four feet.
Background
– Occurring in Middle Ages (1450 A.D.)
– In Europe
– Military manufacturer
– Assigned by King
– Needs to throw tennis ball at least 30 ft.
– Operate from at least four ft.
Customers
• Mr. Pritchard
• King
Scope
– Design, build and test a catapult
– Deliverables:
Final report
Power Point
Catapult
– Resources: Mr. Pritchard, Internet, and Parents
of members
(Cont.)
- Materials:
• Wood
• Screws
• Bungee cord
• Screw with hook
• Tennis ball
• Metal and Wood Rod
Deliverables
• Technical Report
• Power Point
• Catapult
Brainstorming
- Catapult’s function
- Catapult types
- Wood types
- Base types
Research and Generate Ideas
• Function
- Used during attacks
- Flung giant boulders at enemies
• Types
- Trebuchet (deals with balance)
- Onager (uses wire/tension to fire arm)
(Cont.)
• Wood Types
- Whitewood, oak, pine, birch and maple
• Base Types
- Hollow square base
- Full base
- A triangle base
Criteria and Constraints
- Throw from 4 ft.
- Throw at least 30 ft.
- Can’t be taller than 24”
- Base can’t be more than 24 x 24”
- User safety
Nicole’s Solution
Pros+
Cons-
+ Trajectory angle drawn
- Hard to follow
+ Dimensioned
- Hard to build
+ Parts describe what they do
+ Scale drawn