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.
Kas Songy - February 2023 Fastest car time.....( .647 secs at 60 feet. )
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.
Research - CO2 Rail Car Solidworks Tutorial
Research - CO2 Rail Car Solidworks Tutorial
sw19_0toc_railcar.pdfInstructions -
Instructions -
Complete each chapter on the list except the following:
Complete each chapter on the list except the following:
Part 14, Mastercam 19 & 20.
Part 14, Mastercam 19 & 20.
Complete only one type of front and rear rim and tire.
Complete only one type of front and rear rim and tire.
As you design the parts and put together the assemblies, make sure to create a chronological series of images with captions of your process through the steps. These will be displayed in a Automotive Aerodynamics page in your ePortfolio. There may be many images that you want to share so consider using the "Image Carousel".
As you design the parts and put together the assemblies, make sure to create a chronological series of images with captions of your process through the steps. These will be displayed in a Automotive Aerodynamics page in your ePortfolio. There may be many images that you want to share so consider using the "Image Carousel".
sw19_blank_railcar.pdfsw19_body_railcar.pdfsw19_front_rim_Lx_railcar.pdfsw19_front_tire_railcar.pdfsw19_ASSEMBLY_wheel_railcar.pdfsw19_rear_rim_Px_railcar.pdfsw19_rear_tire_railcar.pdfsw19_rear_rim_SPOKES_railcar.pdfsw19_front_rim_SPOKES_railcar.pdfsw19_axles_railcar.pdfsw19_washer_railcar.pdfsw19_ASSEMBLY_railcar.pdfsw19_DRAWING_railcar.pdfsw19_decals_railcar.pdfsw19_cartridge_railcar.pdfsw19_render_railcar.pdfsw19_FlowSim_railcar.pdfRESEARCH - The Physics of Racing Vehicles
RESEARCH - The Physics of Racing Vehicles
THE PHYSICS OF RACING
THE PHYSICS OF RACING
Physics—in particular, aerodynamics—plays a fundamental role in race car design. Championship racing teams spend millions of dollars on aerodynamic research every year. Here are some key physics principles of racing:
Downforce
Downforce
High speeds cause lift, which affects the handling of a car. Downforce keeps the tires gripped to the ground. Wings, fins, and spoilers improve handling by increasing downforce as air flows over them at different speeds and different distances.
Drag
Drag
Air resistance, or drag, is squared as speed increases. All the surfaces of the race car, from the bodywork to the driver’s helmet, are designed to smooth airflow and reduce drag by redirecting turbulent or “dirty” air past the body of the car. This helps the car reach higher speeds.
Car Design ThumBnail Sketching
Car Design ThumBnail Sketching
EDP 5 - Solidworks flow simulation and Data
EDP 5 - Solidworks flow simulation and Data
CO2_Car_Design_WB_2011_ENG.pdfFirst create the CO2 Rail Car Tutorials (refer to above)
First create the CO2 Rail Car Tutorials (refer to above)
Next, use the booklet to the left to complete flow simulation.
Next, use the booklet to the left to complete flow simulation.
Analyzing the Car using SW Flow Simulation (pg.29)
Analyzing the Car using SW Flow Simulation (pg.29)
Gram-force (pg. 35)
Gram-force (pg. 35)
Units, Values, and Interpreting the Results (pg. 61)
Units, Values, and Interpreting the Results (pg. 61)
Analyze the Modified Design - 1st design with wide rear tires, 2nd with thin rear tires (pg. 89)
Analyze the Modified Design - 1st design with wide rear tires, 2nd with thin rear tires (pg. 89)
What About Lift? (pg. 96) Collect values from both models.
What About Lift? (pg. 96) Collect values from both models.
Percentage Improvement Table from both 1st and 2nd Designs. Hand calculated formula must be located in notebook with printout of table.
Skip pages (pg. 106 through 124)
Skip pages (pg. 106 through 124)
Assembly Drawing (pg. 124 through 129) Print the 1 page template sheet of either model in color for a notebook entry.
Assembly Drawing (pg. 124 through 129) Print the 1 page template sheet of either model in color for a notebook entry.
Visualization and Rendering (pg. 130 through 170) Post on ePort
Visualization and Rendering (pg. 130 through 170) Post on ePort
Analyzing the Design - From the SolidWorks Book
Analyzing the Design - From the SolidWorks Book
Designing your race car
Designing your race car
The Design Brief
The Design Brief
The engineering drawing below (aka the brick) is showing the maximum dimensioning of the body of the car and ranges of the holes and pockets.
The engineering drawing below (aka the brick) is showing the maximum dimensioning of the body of the car and ranges of the holes and pockets.
Post processing
Post processing
https://youtu.be/_EUQsHNFSRU
Race Day!
Race Day!
- Take photos and videos of the race for your ePort page. This is a portion of the showcase of the car.
- Record the times and size of the Co2 cartridge.
20230208_092724 (2).mp4culminating records
culminating records
Use the formula below to calculate the maximum velocity of your car. In your engineering notebook, create a detailed (handwritten) explanation of your calculations.
Use the formula below to calculate the maximum velocity of your car. In your engineering notebook, create a detailed (handwritten) explanation of your calculations.
Finally, take an image of your write-up and attach it to the last section of your ePort. Make sure to title and caption all images and videos.
Finally, take an image of your write-up and attach it to the last section of your ePort. Make sure to title and caption all images and videos.
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