CO 2 DRAGSTER DESIGN Research Investigation DRAGSTER RESEARCH

CO 2 DRAGSTER DESIGN Research & Investigation

DRAGSTER RESEARCH • • 1. 2. List four (4) types of automobile racing. a) _____single seat____ c) _____off-road_____ b)____stock car______ d) ______drag____ 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.

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_____.

• 6. When the CO 2 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.

• 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.

• 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.

• 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.

• 17. The total of pressure drag plus skin-friction drag is given the term ___parasite_____ drag. A ____wind______tunnel_____ measures parasite drag.

• 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.