Aerodynamics of cars - Road Loads Chapter 4 Road Loads n n...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Chapter 4 – Road Loads Road Loads n Aerodynamic drag (in –X direction) n Aerodynamic lift (in –Z direction) n Tire rolling resistance n Road gradient (hills) Drag Coefficient, C D Eqn. 4-4 A C V D D A 2 2 1 r = Eqn. 4-2 Drag force Density of air Vehicle velocity Drag coefficient Frontal area of vehicle Density of Air, ρ 4 2 sec 460 519 92 . 29 00236 . 0 ft lbf T F F inHg P r r + = o o r Air pressure Air temperature 3 202 . 1 m kg = r (Bosch Automotive Handbook, p. 339)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Frontal Area of Vehicle, A Height Track For passenger cars, A ~ 0.9 * Height * Track (Bosch Automotive Handbook, p. 338) Typical Frontal Areas Vehicle GM 1-Ton full size van 3.35 m 2 36.0 ft 2 Ford Minivan 3.25 m 2 35.0 ft 2 Chrysler Minivan 2.97 m 2 32.0 ft 2 Typical U.S. Sedan 2.30 m 2 24.7 ft 2 5 passenger Volvo ECC 2.01 m 2 21.6 ft 2 1991 Honda Civic DX 1.80 m 2 19.4 ft 2 GM Experimental Ultralite 1.71 m 2 18.4 ft 2 Renault VESTA II 1.64 m 2
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/27/2010 for the course DME men 302 taught by Professor Dr.m.g during the Spring '10 term at Notre Dame University-Louaize.

Page1 / 4

Aerodynamics of cars - Road Loads Chapter 4 Road Loads n n...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online