Presentation Title

Aerodynamic Testing and Validation

Start Date

November 2016

End Date

November 2016

Location

HUB 302-#2

Type of Presentation

Poster

Abstract

The engineering process is defined as a methodical series of steps that engineers use in creating functional products and processes. The Formula SAE collegiate design series emphasizes the importance of this method in order to create the fastest and lightest vehicle. In an attempt to increase the lateral acceleration of the race vehicle, which should reduce lap times, an aerodynamic package incorporated into the overall vehicle design. The design of this aerodynamic package was based off fundamental aerodynamic theory and a computational fluid dynamics program for solving. However, it is important to take into consideration the difference between simulation and what is actually happening to the vehicle. The objective will be to validate the design of the aerodynamic package with the use of strain gauges on the suspension arms. Testing and validation serves as an opportunity to learn more about how the vehicle dynamics are effected due to aerodynamics. Based on the empirical results, the data will be analyzed and compared to the theoretical and simulated values to provide dynamic validation. A strain gauge system deemed to fit best for the problem at hand because downforce could be calculated by manipulating stress-strain equations. These stress-strain relationships are used to relate the deflection of the suspension arms to a loading force. The equation for stress relates the strain from the suspension arms to a force distributed across an area. The difference in the data from testing the car with and with the aerodynamic package will yield the aerodynamic forces acting on the vehicle. The goal of having an aerodynamic package on a vehicle is increase normal loading on the vehicle to decrease lap time and improve vehicle dynamics. By validating the aerodynamic design the team will move closer towards gaining a competitive advantage and winning the competition.

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Aerodynamic Testing and Validation

HUB 302-#2

The engineering process is defined as a methodical series of steps that engineers use in creating functional products and processes. The Formula SAE collegiate design series emphasizes the importance of this method in order to create the fastest and lightest vehicle. In an attempt to increase the lateral acceleration of the race vehicle, which should reduce lap times, an aerodynamic package incorporated into the overall vehicle design. The design of this aerodynamic package was based off fundamental aerodynamic theory and a computational fluid dynamics program for solving. However, it is important to take into consideration the difference between simulation and what is actually happening to the vehicle. The objective will be to validate the design of the aerodynamic package with the use of strain gauges on the suspension arms. Testing and validation serves as an opportunity to learn more about how the vehicle dynamics are effected due to aerodynamics. Based on the empirical results, the data will be analyzed and compared to the theoretical and simulated values to provide dynamic validation. A strain gauge system deemed to fit best for the problem at hand because downforce could be calculated by manipulating stress-strain equations. These stress-strain relationships are used to relate the deflection of the suspension arms to a loading force. The equation for stress relates the strain from the suspension arms to a force distributed across an area. The difference in the data from testing the car with and with the aerodynamic package will yield the aerodynamic forces acting on the vehicle. The goal of having an aerodynamic package on a vehicle is increase normal loading on the vehicle to decrease lap time and improve vehicle dynamics. By validating the aerodynamic design the team will move closer towards gaining a competitive advantage and winning the competition.