Abstract
This paper solves the problem of automatic taxiing direction control of carrier-based aircraft. On modern aircraft carriers, taxiing aircraft either propel themselves using their own engines or are towed by specialised tugs, which requires dedicated personnel and assets. The automatization of this process would simultaneously increase aircraft flow and decrease the number of personnel and assets required. The key challenge in the automatization of this type of process is the development of an automatic control system capable of performing the requisite tasks, which our researchers managed to do. First, the specific conditions of taxiing on-board carriers were analysed and modelled. The model of a fixed-wing aircraft best suited to this purpose was identified and the proper method of automatic control – ADRC – chosen. The algorithm used in the methodto facilitate effective direction control of a taxiing aircraft was formulated and extensively tested. The results of automatic taxiing simulation for F/A-18 aircraft have been presented. The conclusion is that the ADRC type control algorithm can ensure effective automatic control of taxiing aircraft.
Highlights
Taxiing is the movement of an aircraft on the ground before initiating the take off procedure, i.e. preceding the take off run, and after the landing manoeuvre, i.e. after the speed drops below the limit defined as the end of a landing run
The ADRC was applied as a directional control algorithm that tracks the reference yaw angle by turning the nose wheel of the F/A-18 aircraft model presented in the preceding chapter
The presented results of simulation tests suggest that the ADRC control algorithm can be successfully used in a carrier-based aircraft automatic taxiing control system
Summary
Taxiing is the movement of an aircraft on the ground before initiating the take off procedure, i.e. preceding the take off run, and after the landing manoeuvre, i.e. after the speed drops below the limit defined as the end of a landing run. Automatic taxiing control systems, having the potential to change the current status quo in the engineering domain, are a relatively new type of aircraft control systems. Until now, they have not gone beyond the concept, project and simulation stages, where the issues of control algorithms, control rules and modelling of taxiing aircraft motion still plague some areas of development. Aircraft designers strive to get maximum lifting force, affecting required runway length. In case of a crosswind, the yawing moment and crosswind force may achieve considerable values, especially in aircraft having a broad side projection and/or a large vertical stabiliser. The modelling of taxiing aircraft motion has to be a combination of classical aircraft modelling and wheeled vehicle modelling
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