Aircraft Flap Damping Unit for Dynamic Load Absorption

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Solution Overview

Problem

Conventional adjustable flap systems in aircraft require robust adjustment units to handle both static and dynamic loadings, leading to increased weight and potential malfunctions due to critical malfunctions like fractures in the kinematic adjustment mechanism.

Innovation Solution

Incorporating a damping unit between the main wing surface and the adjustable flap to reduce dynamic loading on the adjustment units during malfunctions, allowing for a lighter design while maintaining safety, with options for integration into the kinematic adjustment mechanism or as a separate component.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If adjustment units are designed to be robust to accommodate both dynamic and static loadings, then reliability is improved, but weight increases

Engineering Contradiction:
ImprovereliabilityVSAvoidweight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

A damping unit is arranged between the adjustable flap and the main wing surface to absorb dynamic loading before it reaches the adjustment units. This cushioning effect allows the adjustment units to be designed for static loading only, reducing their weight while maintaining reliability during malfunction events.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Strength

If adjustment units are designed to be robust to accommodate dynamic loading, then strength is improved, but device complexity increases

Engineering Contradiction:
ImprovestrengthVSAvoiddevice complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The system is divided into separate functional components: a damping unit that handles dynamic loading and adjustment units that handle static positioning. This segmentation allows each component to be optimized for its specific function, reducing the complexity of the adjustment units while maintaining overall system strength.

Inventive Principle:
Principle #1Segmentation

3Weight of moving object

If damping unit is added to reduce dynamic loading, then weight of adjustment unit is reduced, but device complexity increases

Engineering Contradiction:
ImproveweightVSAvoiddevice complexity
Core Design Contradiction:
Weight of moving objectVSDevice complexity

Solution Approach 1:

The damping unit acts as an intermediary element between the adjustable flap and the main wing surface, absorbing dynamic forces before they reach the adjustment units. This mediator approach allows the adjustment units to be lighter while the overall system complexity increases only minimally by adding this intermediate component.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 damping unit effectively reduces dynamic loading on adjustment units, enabling a weight reduction while ensuring safety by redistributing static and dynamic loads, thus minimizing the risk of further malfunctions and maintaining flight safety.

Implementation Method 1

at least one damping unit, for purposes of damping a dynamic loading effected by the adjustable flap (regulating flap) onto the adjustment unit

Methodology Applied
Scientific EffectDamping: Damping

Data Source

PatentUS9573676B2Device for an adjustable flap of a wing
Publication Date: 2017.02.21 AIRBUS OPERATIONS GMBH
  • US9573676B2 patent drawing
  • US9573676B2 patent drawing
  • US9573676B2 patent drawing

AI summary

The invention concerns a device for a adjustable flap adjustably mounted on a main wing surface of an aeroplane wing, in particular, a landing flap, with at least one adjustment unit for purposes of adjustment of the adjustable flap, which has an actuator arranged, or that can be arranged, on the main wing surface, and has a kinematic adjustment mechanism running between the actuator and the adjustable flap, wherein the adjustable flap is mechanically coupled with the actuator via the kinematic adjustment mechanism. At least one damping unit for purposes of damping a dynamic loading effected by the adjustable flap on the adjustment unit, which can occur as a result of a critical malfunction event occurring in the region of the adjustable flap, is arranged, or can be arranged, between the main wing surface and the adjustable flap.