Inflatable Vehicle Aero Surface for Adaptive Downforce Control
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Solution Overview
Problem
Existing vehicles lack the ability to dynamically adjust their aerodynamic contours in response to varying driving conditions, affecting their performance in terms of lift, drag, and stability.
Innovation Solution
An inflatable aerodynamic system comprising an elastic bladder that can change shape by altering its pressure, regulated to match target pressures based on real-time conditions or previous testing, to optimize driving performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the vehicle uses static outer surfaces, then the manufacturing complexity is reduced, but the adaptability to different driving conditions deteriorates
Solution Approach 1:
The patent applies the dynamics principle by transforming static vehicle outer surfaces into dynamic, adjustable surfaces. The bladder structure can be inflated or deflated to change the vehicle's aerodynamic contours in real-time, allowing adaptation to different driving conditions such as high-speed cruising, cornering, or towing, thereby resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The patent employs pneumatics by using an inflatable bladder structure controlled by air pressure. The bladder can be selectively inflated or deflated through pneumatic actuators to modify the vehicle's outer surface geometry, providing a relatively simple mechanism (comparing to mechanical moving parts) that achieves complex aerodynamic adaptation across multiple driving scenarios.
2Reliability
If the vehicle uses dynamic aerodynamic contours, then the driving performance is improved, but the device complexity increases
Solution Approach 1:
The patent utilizes flexible shells by employing a bladder structure that can be inflated or deflated to change the vehicle's aerodynamic profile. This flexible membrane approach allows the outer surface to dynamically adapt to different driving conditions without requiring complex rigid mechanical structures, thereby improving driving performance while controlling system complexity.
3Force
If the bladder pressure is increased, then the aerodynamic down force is maximized, but the energy consumption increases
Solution Approach 1:
The system dynamically adjusts bladder pressure based on real-time driving conditions rather than maintaining constant high pressure. The control system monitors parameters such as vehicle speed, steering angle, and brake status to selectively inflate or deflate the bladder, optimizing the balance between aerodynamic down force and energy consumption for each specific driving scenario.
Solution Approach 2:
The patent implements feedback control by using sensors to monitor driving conditions and vehicle performance, then adjusting the bladder pressure accordingly. The control system receives input from various sensors (speed, steering, brake status) and modulates the pneumatic actuator to maintain optimal aerodynamic characteristics while minimizing energy consumption, creating a closed-loop system that adapts to changing conditions.
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 enhances vehicle performance by dynamically adjusting aerodynamics to minimize lift, maximize down force, and improve energy efficiency and handling under different conditions.
Implementation Method 1
The bladder dilates upon an increase in a pressure inside the bladder and/or contracts upon a decrease in the pressure inside the bladder
Implementation Method 2
regulating a pressure inside the bladder toward the target pressure of the target driving condition by regulating an amount of a fluid confined in the bladder
Implementation Method 3
different lift forces exerted on the vehicle, different down forces exerted on the vehicle, different side forces exerted on the vehicle, different drag forces exerted on the vehicle
Data Source
AI summary
A method of producing a desired driving performance for a vehicle includes regulating a pressure inside a bladder, which defines an outer surface of the vehicle. A change in the bladder pressure changes the shape of the bladder, and thereby changes a shape of the outer surface of the vehicle, thus affecting the aerodynamics of the vehicle. The bladder pressure is regulated to be at a target bladder pressure based on the driving condition of the vehicle, which target bladder pressure can be derived from real-time machine learning or based on previous testing of a prototype of the vehicle, and thus affects aerodynamics of the vehicle so as to produce the desired driving performance for the vehicle in the driving condition.