Cambered Aircraft Stabilizer Airfoil Design
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Solution Overview
Problem
The design of horizontal and vertical stabilizers for aircraft, particularly rotorcraft, faces challenges in balancing aerodynamic performance with structural and manufacturing considerations, often requiring complex designs with adjustable control surfaces and anti-icing systems, which increase weight, complexity, and cost.
Innovation Solution
The implementation of cambered airfoil structures for both horizontal and vertical stabilizers, which eliminate the need for slats and anti-icing systems by providing enhanced aerodynamic performance through concave and convex surface slopes, reducing complexity and weight while maintaining or improving stability and lift characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex designs with adjustable control surfaces and anti-icing systems are used, then aerodynamic performance and stability are improved, but weight, device complexity, and cost increase
Solution Approach 1:
The patent removes the anti-icing system from the stabilizer design by using a cambered airfoil configuration that inherently prevents ice accumulation through its aerodynamic characteristics. The cambered shape creates airflow patterns that prevent ice formation, eliminating the need for separate anti-icing mechanisms and reducing overall device complexity.
Solution Approach 2:
The patent changes the geometric parameters of the airfoil by implementing a cambered configuration with specific curvature ratios and surface slopes. The cambered airfoil has a curved upper surface and flatter lower surface, creating optimized airflow characteristics that improve stability and prevent ice accumulation without additional systems.
2Adaptability or versatility
If slats and anti-icing systems are installed, then flight capabilities in adverse conditions are improved, but weight and manufacturing cost increase
Solution Approach 1:
The patent extracts and eliminates the anti-icing system by using the cambered airfoil's inherent aerodynamic properties to prevent ice formation. The optimized airflow over the cambered surface creates conditions that prevent ice accumulation, removing the need for heavy anti-icing equipment and reducing overall weight.
Solution Approach 2:
The cambered airfoil design is self-protecting against ice accumulation through its inherent aerodynamic characteristics. The curved geometry creates airflow patterns that naturally prevent ice formation, allowing the airfoil to protect itself without external anti-icing systems or additional weight.
3Reliability
If conventional airfoil designs are used, then manufacturing simplicity is maintained, but aerodynamic performance and stability are reduced
Solution Approach 1:
The patent modifies the airfoil parameters by implementing a cambered configuration with specific curvature ratios. The upper surface has a curved profile while the lower surface remains relatively flat, creating optimized airflow characteristics that improve stability. These parameter changes are achieved through standard manufacturing processes like molding or machining of the airfoil section.
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
This design achieves improved pitch and yaw stability, reduced drag, and extended flight capabilities in adverse conditions without the need for slats or anti-icing systems, resulting in a more cost-efficient and reliable aircraft configuration.
Implementation Method 1
The airfoil structure is cambered, wherein a camber of the airfoil structure forms a concave slope on the top surface and a convex slope on the bottom surface
Implementation Method 2
enhanced aerodynamic performance through concave and convex surface slopes
Data Source
AI summary
In one embodiment, a horizontal stabilizer comprises an airfoil structure configured to be mounted to an aircraft at a horizontal orientation. The airfoil structure comprises a leading edge, a trailing edge, a top surface, and a bottom surface. Moreover, the airfoil structure is cambered, wherein a camber of the airfoil structure forms a concave slope on the top surface and a convex slope on the bottom surface.