1. Research & Investigation
CO2 Dragster Design
Research & Investigation

2. Dragster Research 1. List four (4) types of automobile racing.
a) _____single seat____ b)____stock car______
c) _____off-road_____ d) ______drag________
2. When a dragster crosses the start line before the __green____ light comes on, a ___red_______ light flashes and the dragster is disqualified.
3. A _____tolerance_____________ is a specification which allows each dragster to be _______different__________ within the specified limits.

3. Orthographic layout
4. The front view shows the overall dimensions of ____length___________ and height. Wheels appear as __circular______________ objects in the front view.
5. The top view shows the overall dimensions of ___width____________ and length. The side view shows the overall dimensions of width and ____height__________.

4. 6. When the CO2 cylinder is punctured the ____action_____________ of the gas shooting backwards causes a __reaction___________ and the dragster moves forward.
7. A light vehicle will ___accelerate_________ faster than a heavy vehicle. A light vehicle will have less __inertia___ and will not travel as far.

5. 8. Friction resists ___movement____ as two ____objects________ slide past each other.
9. ____Mechanical___________ friction occurs when an object is dragged across another object. _Fluid_____ friction is present when a body moves through a fluid.
10. __Aerodynamics_________ is the study of fluid flow and the ___forces________ involved when an object moves through a fluid, or when fluid moves past an object.

6. 11. The force perpendicular to the motion of an object is called ___lift_______. The force parallel to the motion but in the opposite direction is called ___drag_________.
12. An automobile body may create ___positive______ (upward) or ___negative________ (downward) lift depending upon its shape.

7. 13. Modifying the ___shape______ of an object to reduce the amount drag is called __streamlining______.
14. Pressure drag is caused by the ___shape_________ or form of the object. A blunt object has high ___pressure____________ drag.
15. Skin-friction drag results from air ______sticking__________ to the surface of a moving object. Irregularities on the outer ___surface_______add to skin-friction drag.
16. In a ____streamlined_______ object skin-friction drag is larger than pressure drag but the ____total_________ drag is greatly reduced.

8. 17. The total of pressure drag plus skin-friction drag is given the term ___parasite_________ drag. A ____wind_____ ______tunnel__________ measures parasite drag.

9. 18. A wind tunnel will show the amount of ___lift___________ and _____drag___________, and how air flows around the dragster. A ___roll________ ____test____________ will determine the efficiency of the dragsters’ wheels, axles, and bearings.
19. The two most common mistakes are:
a) not leaving at least ___3______ mm around the entire chamber and
b) cutting the body less than __35_______ mm at the axles.