Embedded Files
Automotive aerodynamics is the study of the aerodynamics of road vehicles. Its main goals are reducing drag and wind noise, minimizing noise emission, and preventing undesired lift forces and other causes of aerodynamic instability at high speeds. Air is also considered a fluid in this case. For some classes of racing vehicles, it may also be important to produce downforce to improve traction and thus cornering abilities.
Automotive aerodynamics is the study of the aerodynamics of road vehicles. Its main goals are reducing drag and wind noise, minimizing noise emission, and preventing undesired lift forces and other causes of aerodynamic instability at high speeds. Air is also considered a fluid in this case. For some classes of racing vehicles, it may also be important to produce downforce to improve traction and thus cornering abilities.
Unit Objectives
Describe three factors important to the performance of a CO2-powered rocket car
Calculate the area of a solid’s planar face
Calculate the volume of a solid, and, when given the density, calculate the mass
Create a new assembly
Insert components
Add mating relationships between components.
Use Additive Manufacturing to build it and make it ready for racing.
Tutorial Car
Tutorial Car
Final Assembly
Body Front Rim Rear Rim
Front Rim Rear Rim Cartridge
Washer Rear Axle Front Axle
Drawing
Render
Tutorial Car Simulation
Tutorial Car Simulation
Thick Tires Thin Tires
Thick Tires Thin Tires
Air flow
Air flow
Personal Car
Personal Car
The Design
The Design
All of the features
of the main body
Bearing (wheel) Washer Canister
Original Car
Original Car
Surface Plot
Flow Sim Surface Plot Range Flow Trajectory Range
Data
Redesign
Redesign
In order to reduce the drag I added fillets around the car to help smooth our the path of the airflow helping reduce dirty air and decrease drag at the same time.
Surface Plot
Flow Sim Surface Plot Range Flow Trajectory Range
Data
Drawing
Drawing
car drawing.pdfRace Day
Race Day
Final Product
Final Product
Post Process
Post Process
After printing my car, I removed all supports and sanded them smooth. I then sanded the axles down to the perfect size to fit my bearings on, so they would never come off. I decided not to paint my car since the paint could clog up important holes and increase the weight of my car.
Races
Races
I started the day with a bye, but after that, I won my first race of the day with a time of 1.137 seconds, moving to the round of 8
My next race was against the second place finisher. I lost but with an improved time of 1.114 seconds. I was now eliminated from the bracket finishing in the top 8.
My third race was an extra race on the side not in the competiton. I had damage from the previous race leading to a wheel flying off at the start of the race. However, the recuded weight allowed the car to get an impressive time of 1.042 one of the best times in the class.
Velocity Calculations
Velocity Calculations
My max velocity was 77.82 miles per hour
Page updated
Google Sites
Report abuse