Wing Foil Leading-Edge Spoiler Profile for Lift and Stability
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Solution Overview
Problem
Existing wing rigs and kites for wind-powered sports suffer from high weight, complex construction leading to time-consuming assembly/disassembly, risk of injury, and suboptimal aerodynamics, with handling adjustments being difficult due to standard hand loops.
Innovation Solution
Incorporation of a radially projecting spoiler profile along the leading edge of the wing rig and kite, designed to induce flow separation, improving aerodynamics and handling by enhancing lift and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a complex tubular structure is used for the leading edge and boom, then the wing rig achieves structural strength, but the overall weight becomes very high
Solution Approach 1:
The patent replaces the complex rigid tubular structure with an inflatable leading edge tube that has a spoiler profile. The inflatable tube uses a flexible membrane structure that can maintain aerodynamic shape and structural integrity while being significantly lighter than rigid tubing. The spoiler profile on the inflatable tube provides the necessary aerodynamic function without requiring heavy internal support structures.
2Stability of the object's composition
If a complex tubular structure is used for the leading edge and boom, then the wing rig achieves structural integrity, but assembly and disassembly become time-consuming
Solution Approach 1:
The inflatable leading edge tube with integrated spoiler profile can be quickly inflated to assume its structural form, eliminating the need for complex assembly of rigid tubular sections. The flexible membrane structure with integrated spoiler eliminates multiple connection points and joints that would require time-consuming assembly and disassembly operations.
3Strength
If rigid tubing is used for the leading edge and boom, then structural strength is achieved, but the risk of injury to the user increases
Solution Approach 1:
The inflatable leading edge tube replaces rigid tubing with a flexible, air-filled structure that maintains aerodynamic shape while being inherently safer for users. The flexible membrane can deform upon impact rather than causing injury, eliminating the hazard of rigid tubes striking the user during catapult falls or other accidents.
4Device complexity
If a standard hand loop configuration is used, then the wing rig achieves simple construction, but grip position adjustments become difficult
Solution Approach 1:
The patent makes the grip position adjustable by providing multiple hand loop positions along the inflatable leading edge tube. Users can dynamically reposition their hands along the tube to optimize grip location for different maneuvers and wind conditions, transforming the static hand loop configuration into a dynamic, adaptable system.
5Weight of moving object
If an inflatable center strut is used, then low weight and high lift are achieved, but aerodynamic performance does not meet higher requirements
Solution Approach 1:
The patent applies a spoiler profile specifically to the leading edge tube where it is most needed for aerodynamic performance. The spoiler profile creates controlled flow separation at the leading edge, improving lift and aerodynamic efficiency in the critical front section of the wing rig while maintaining the lightweight inflatable construction throughout the rest of the structure.
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 spoiler profile significantly improves performance by increasing lift, simplifying grip adjustments, and enhancing roll and pitch stability, allowing for higher speeds and stable maneuvering.
Implementation Method 1
a radially projecting profile lip, hereinafter referred to as a spoiler profile, is formed in the area of the leading edge and extends along a portion of the leading edge/leading edge approximately transversely to the center strut. This spoiler profile is preferably designed such that flow separation occurs in the area it covers.
Implementation Method 2
a (hand-supported) wing rig for wind-powered sports, for example foil surfing, with an inflatable leading edge leading tube (6) and a rigid or inflatable center strut (20)
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a hand-held wing foil (1) with a spoiler profile (36) that is formed substantially in the lower, tangential flow-receiving region of the leading edge (7). In addition, the invention relates to a kite (101) having a spoiler profile (116) that is formed substantially in the lower, tangential flow-receiving region of the leading edge (103).