Power can only do so much when it comes to creating spectacular top speeds, with the drag coefficient being the next piece of the puzzle. It would be interesting to compare. Post drag coefficients of cars.

Measure the Drag Coefficient of Your Car: The purpose of this experiment is to determine your vehicle's drag coefficient Cd and coefficient of rolling resistance Crr. Drag Coefficient: CD • The drag coefficient is a function of the shape of the object and the Reynolds Number (Re) – Re = (velocity * length-scale) / (kinematic viscosity) • For a full-size truck, a change in drag coefficient of 0.01s approximately equal to an improvement in fuel economy of 0.1 mpg on the combined city/highway driving cycle. They use spoilers and vents to create downforce, keeping them planted firmly on the ground at speed. … This is done by measuring your vehicle's speed as a function of time while coasting in neutral.

Cars are getting ever-more aerodynamic. Jump to: navigation, search. Indy car etc designers, the drag of such cars is very high. Nowadays, cars have an average drag coefficient of 0.40 and some car have as low as 0.26. CARS Generally, a production car has a drag coefficient of between 0.25 and 0.3, while SUVs have a higher figure because of their boxier shapes, between 0.35 and 0.45. drag coefficient but has safety disadvantages, including reduced driver visibility. In that formula for a vehicle of any given size, the one thing automakers can change to reduce the force of air acting against the vehicle is the vehicle’s drag coefficient. The average drag coefficient for a production car is between 0.30 and 0.35, but surprisingly, many of the world’s fastest cars create much more drag. Using a Wind Tunnel to Measure the Drag Coefficient with Students Designed Dragster Cars SUBJECT: Aeronautics TOPIC: Drag DESCRIPTION: A set of activities using a student wind tunnel. •!A lot of this drag is due to the wings but a lot of it is due to the uncovered wheels. Reducing drag. The reduction of drag in road vehicles has led to increases in the top speed of the vehicle and the vehicle's fuel efficiency, as well as many other performance characteristics, such as handling and acceleration. CONTRIBUTED BY: Carol Hodanbosi EDITED BY: Jonathan G. Fairman - August 1996 A Ninth Grade Science Project • Some "high performance" models may actually have higher drag, due to wider tires and extra spoilers. Reducing drag.

Determination of air drag coefficient of vehicle models October 2008 Conference: International Congress Motor Vehicles & Motors 2008 - MVM 2008, „Sustainable Development of Automotive Industry“ The important thing about this equation is that the force on the car gets larger very quickly at high speeds. •!Typical Formula 1 car drag coefficients are between 0.7 and 1.1, depending on the circuit the car is set up for. The c component comes mostly from things that affect aerodynamic drag like the frontal area, drag coefficient and density of the air. The magic figure is a car’s Cd, or drag coefficient. From EcoModder Forum Wiki. Does anyone have the Cd of the Challenger & Charger? Also, the power you need while moving a body through the air goes up with the speed. Force = 1/2 x Air Density x the Cross-Sectional Area of the Car x The Car’s Drag Coefficient x the Square of the Vehicle’s Speed. The lower this is, the slipperier through the air it will be. Drag Coefficient of Hellcat? Because of this, most of the world’s most aerodynamic cars aren’t speed machines, they’re fuel-sipping sedans. Such vehicles are said to have the best aerodynamic design. • Certain cars can achieve figures of 0.25–0.30, although sometimes designers deliberately increase drag to reduce lift.

•!Thankfully such cars also have very powerful engines I believe the Charger is better due to higher top speed, but was curious of how the Challenger measures with the competition (Shelby, Camaro, Corvette, etc.). Drag Coefficients Explained: Which Kind Of Car Is Slippiest? Vehicle Coefficient of Drag List. While a car’s drag coefficient (Cd) doesn’t tell its full aero efficiency story, because you always need to keep the size of its frontal area in mind, it is an important parameter in making a car efficient and fast - but we won’t be focusing on that here, as this article is centered solely around the coefficient itself. The reduction of drag in road vehicles has led to increases in the top speed of the vehicle and the vehicles fuel efficiency, as well as many other performance characteristics, such as handling and acceleration. So, above 60 km/h, you need a lot of power to push the car to overcome the aerodynamic drag.