Aircraft Flap Deploying Device Lateral Mechanism
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Solution Overview
Problem
The existing flap deploying devices in aircrafts occupy substantial space within the main wing, restricting the thinning of wing thickness and increasing air resistance, which hinders fuel efficiency improvements.
Innovation Solution
A flap deploying device with a moving mechanism arranged laterally to the rail in the wingspan direction, utilizing a screw jack and carriage mechanism to deploy the flap, reducing the wing's thickness and projecting height of the flap track fairing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flap deploying device is accommodated within the main wing, then the flap can be deployed effectively, but the wing thickness increases and air resistance increases
Solution Approach 1:
The moving mechanism is repositioned from a vertical arrangement (within the wing thickness) to a lateral arrangement (along the wingspan direction). The rail extends in the chord direction while the moving mechanism operates laterally, effectively moving the deployment mechanism to a different spatial dimension that does not increase wing thickness.
2Device complexity
If the moving mechanism is arranged within the main wing thickness, then the structure is compact, but the wing cannot be made thinner
Solution Approach 1:
The invention transitions the moving mechanism from occupying the thickness dimension to occupying the lateral dimension along the wingspan. The rail-guided carriage system extends laterally, allowing the mechanism to be distributed along the wing span rather than concentrated within the wing thickness.
3Ease of operation
If the non-accommodated portion of the deploying device is increased, then the mechanism can function, but air resistance increases and fuel consumption worsens
Solution Approach 1:
By repositioning the moving mechanism laterally along the wingspan rather than vertically within the wing, the portion of the mechanism that extends beyond the wing is reduced. The lateral arrangement allows better integration with the wing structure and reduces the size of the flap track fairing required.
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 configuration allows for a thinner main wing and reduced air resistance, enhancing fuel efficiency and flight performance by minimizing the thickness of the wing and the projecting height of the flap track fairing.
Implementation Method 1
a screw jack including a screw that is rotationally driven by the drive source, and the moving body that meshes with the screw so as to be relatively rotatable
Data Source
AI summary
The flap deploying device for a flap disposed at a leading edge or a trailing edge of a main wing of the aircraft, the deploying device including: a drive source; a moving mechanism with a moving body advancing and retracting by power of the drive source; a carriage mechanism that carries advancing and retracting motion of the moving body to the flap so as to deploy the flap between a retracted position and a deployed position; and a rail that guides the carriage mechanism. Since the moving mechanism is arranged lateral to the rail in the wingspan direction of the main wing, the dimension of the wing in a thickness direction can be reduced at least by a dimension corresponding to the moving mechanism. Therefore, the wing can be made thinner, or the projecting height of a flap track fairing can be reduced.