Adjustable Aircraft Dummy Landing Gear for Pushback Steering Training
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Solution Overview
Problem
Existing aircraft dummies are limited to imitating a single aircraft type, requiring multiple dummies for different types, and fail to simulate the complex steering behavior during pushback, increasing training costs and risk of damage.
Innovation Solution
An aircraft dummy with adjustable landing gear, featuring a transverse and longitudinal axle system that allows for changing width and length, along with a 360-degree rotatable front wheel, to emulate various aircraft types and simulate steering behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple fixed aircraft dummies are used to represent different aircraft types, then each dummy can accurately simulate its specific aircraft type, but the quantity of dummies required increases and storage/maintenance costs increase
Solution Approach 1:
The aircraft dummy employs adjustable landing gear components including a transverse axle with adjustable width and a longitudinal axle with adjustable length. These dynamic adjustment mechanisms allow the dummy to transform its dimensions to match different aircraft types, replacing the need for multiple fixed dummies while maintaining simulation accuracy for each aircraft type
Solution Approach 2:
The patent implements parameter changes by making the landing gear dimensions (width via transverse axle, length via longitudinal axle) variable rather than fixed. This allows the dummy to adapt its geometric parameters to represent different aircraft types, achieving versatility without sacrificing the precision needed for accurate simulation of specific aircraft characteristics
2Adaptability or versatility
If a single adjustable aircraft dummy is used to represent multiple aircraft types, then versatility and cost are improved, but the complexity of adjusting the dummy increases
Solution Approach 1:
The landing gear is segmented into independent adjustable components: the transverse axle for width adjustment and the longitudinal axle for length adjustment. This segmentation allows each component to be adjusted independently and relatively simply, reducing the overall complexity compared to a fully integrated adjustable system while maintaining versatility
Solution Approach 2:
The adjustable landing gear structure serves multiple functions: it can represent different aircraft types through dimension changes, provide accurate simulation for training purposes, and maintain structural stability during pushback operations. This multi-functionality reduces the need for multiple specialized dummies while keeping the adjustment mechanism relatively simple
3Device complexity
If the front wheel is fixed in position, then the structure is simpler, but the steering behavior during pushback cannot be accurately simulated
Solution Approach 1:
The front wheel is made rotatable about a vertical axle, transforming it from a static component to a dynamic one. This allows the front wheel to simulate the steering movements of real aircraft during pushback operations, accurately replicating the complex steering behavior that depends on aircraft type and dimensions while adding minimal structural complexity
Data Source
AI summary
An aircraft dummy for emulating at least one aircraft type, in particular for emulating a plurality of aircraft types, includes a landing gear having a transverse axle and a longitudinal axle which extends perpendicularly relative to the transverse axle, wherein the aircraft dummy include at least two rear wheels which are suspended on the transverse axle and at least one front wheel, wherein the front wheel can be rotated about a vertical axle which extends perpendicularly to the longitudinal axle and perpendicularly to the transverse axle, and wherein the transverse axle in order to change a width of the aircraft dummy and/or the longitudinal axle in order to change a longitudinal extent of the aircraft dummy is/are configured to be longitudinally adjustable.