1. THE CO2 CAR EGG CRASH test CHALLENGE
Mr. Bundy
Drawing & Design

2. Real-World Crash Test Your Assignment VS.
Car made of paper, cardboard, wood
Passenger is represented by an egg
CO2 Powered car hooked to track line
Analyze results and fix car for retest
Actual cars that are driven by public
Passenger is represented by a “dummy”
Combustible fuel powered car on controlled track
Analyze results and report to public and auto makers

3. TEAM WORK IS KEY 2 Areas of Design
The Crumple/Crush Zone & Aerodynamics
Design a car that is fast with low drag
Well constructed systems
engine, wheels, compartment, etc…
Devise a way to have your car absorb impact
Use what ever material/design you want.
The Passenger (EGG) Restraint & Cockpit
Design a seating system
Harness/seatbelt to hold
egg in place
Harness can not crack or bust egg
Consider the best way to keep the egg “comfortable” for a long ride…yet safe for a BIG impact

4. Working as a group with individual engineering tasks!!!
Specific jobs
2 person groups
Restraint systems Designer, along ergonomics for egg seat.
Crumple Zone Designer, with aerodynamics design.

5. Restraint systems Designer w/ ergonomics for egg seat.
Responsible for
Occupants being held safe and secure during and after the crash
Ergonomics of cockpit
Entry & Exit of car
Visibility out of windows
Special considerations
Remember that the egg is to be considered a person…the egg itself is a body (excluding the arms and legs)

6. Crumple Zone Designer w/ aerodynamics design.
Responsible for
Modeling the car to insure that the design will adequately protect occupants against forces and energy transfer
Overall design of car
Must have realistic look
Yet have safety in mind
And incorporate all the design factors into 1

7. ASSESSMENT Portfolio documenting and describing the design
Drawings - Investigations
Research Report
Realistic component of car
Body Chasis
“Suspension”
Justification to the class
Survival of occupants
Exploded egg = fatal crash
Cracked egg = injury
No Blemish = little/no injury
Class Participation

8. Restraint Subsystem Sketches of all preliminary designs
Materials chosen and rejected (analysis)
Test results (mgh) for each trial
Reasons for failure: observations, causes/effects
Methods of optimization and results
Final optimized solution: drawings/description.

9. Crumple Zone Subsystem
Preliminary Sketches
Materials chosen & rejected (analysis)
Test results for each trial
Reasons for failure: observations, causes/effects
Methods of optimization and results
Final optimized solution: drawings/

10. Car Body Design Subsystem
Sketches of all
preliminary designs
Materials chosen
and rejected (analysis)
Design goals stated:
appearance, aerodynamics, ergonomics, weight, and crash-worthiness.

11. Ergonomics Subsystem
Measurements and investigations on human factors engineering
Methods used to apply ergonomics to final design
Evidence of ergonomics in car body design.

12. CAD DRAWING OF CAR FRAME
Dimensions
3-4 inches wide ½ - 1 ½ inch ground clearance
9-12 inches long inches at highest point