Hinged Air Dam for High-Speed Spin Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-speed racing vehicles often experience lift-off from the track during spin-outs due to aerodynamic forces, leading to loss of control and potential crashes, as existing safety measures like roof flaps and spoilers are insufficient to counteract lift forces effectively.
Innovation Solution
A system comprising a diffuser and air dam mounted on the underside of the vehicle, with a hinged air dam that deploys to create a downward force by redirecting airflow, and a roof flap that automatically deploys to increase downforce and act as an air brake, working in tandem to maintain vehicle contact with the track during high-speed spins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If wind deflection devices such as rear-deck spoilers are used to maintain tire contact with the track surface, then downward force on the vehicle is improved, but the vehicle remains vulnerable to lift-off during high-speed spin-outs
Solution Approach 1:
The air dam is designed as a movable, hinged structure that can dynamically change its position and orientation in response to vehicle spin conditions. During normal operation, it remains in a retracted position, but during a spin-out, aerodynamic forces cause it to rotate and deploy, automatically adapting to counteract lift forces without requiring active sensing or control systems.
Solution Approach 2:
The invention converts the harmful aerodynamic lift forces that cause spin-out into a beneficial deployment mechanism. The same aerodynamic forces that lift the vehicle during a spin are harnessed to rotate the hinged air dam into its deployed position, where it then generates downward force to counteract the lift and stabilize the vehicle.
2Ease of operation
If aerodynamic forces are used to maintain vehicle contact with the track, then vehicle control is improved, but lift-off occurs at certain angles during spin-out
Solution Approach 1:
The air dam acts as an aerodynamic counterweight that generates downward force to balance and counteract the upward lift forces acting on the vehicle during spin-out. By positioning the air dam to deflect air downward, it creates an opposing aerodynamic force that weighs against the lift, keeping the vehicle grounded and controllable.
3Stability of the object's composition
If fixed aerodynamic devices are used to increase downforce, then vehicle stability is improved, but the devices cannot adapt to changing spin conditions
Solution Approach 1:
The air dam transitions from a static, fixed aerodynamic device to a dynamic, movable structure. The hinged connection allows the air dam to change its angle and position relative to the vehicle body, enabling it to adapt its aerodynamic effectiveness based on the severity and angle of the spin condition without requiring active control systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively increases downforce on the vehicle during spins, preventing lift-off and providing additional control, thereby enhancing safety and performance by ensuring the vehicle remains on the track, even at high speeds.
Implementation Method 1
air received into the opening in response to the vehicle moving in a direction of the aft end of the vehicle produces a downward force on the aft end of the vehicle
Implementation Method 2
at least one of gravity or impinging air on the air dam driving the second end of the air dam away from the diffuser
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A system and apparatus for increasing the safety of motor vehicles traveling at high speeds in the rearward direction is provided. An air dam hingedly secured to the aft end of a vehicle may remain in a stowed position while the motor vehicle is traveling in a forward direction so as not to interfere with aerodynamic performance. When a motor vehicle begins to enter a spin, the air dam may deploy and increase the downward force on the vehicle and as well as act as an air brake, thereby reducing the likelihood of the aft end of the vehicle lifting from the surface during a spin-out at high speeds.