Dynamic modelling of a landing gear
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Sähkötekniikan korkeakoulu |
Master's thesis
Ask about the availability of the thesis by sending email to the Aalto University Learning Centre oppimiskeskus@aalto.fi
Authors
Date
2017-08-28
Department
Major/Subject
Space Robotics and Automation
Mcode
AS3004
Degree programme
Erasmus Mundus Space Master
Language
en
Pages
65
Series
Abstract
Companies in the aerospace industry would benefit from a faster, more flexible way to investigate physical system issues in the vehicles/aircraft during their lifetime. Current software and hardware provides us with the option of making a system model to simulate investigated problems, saving money and time. This work focuses on a nose landing gear of the Airbus’ fighter jet – Eurofighter Typhoon. The landing gear itself is a very complex system designed for high performance rather than robust usage; it requires a lot of maintenance and testing during its lifetime. A practical investigation tool is much needed. The primary objective of this work is developing of a simulation model for the nose landing gear in Matlab, Simulink using Simscape library. The model spreads mainly across two domains: the hydraulic and the multibody domain. The resulting model can simulate extension and retraction behaviour of the real Eurofighter nose landing gear under different in-flight conditions. Friction in the hydraulic actuator was derived from the model. Connecting the known parameters of the landing gear subsystems and adjusting the model to mimic real system behaviour, it can be used to extract the derived parameters, which were previously unknown. The model solves the time-consuming investigations and is much more flexible than physical test benches. Finally, it can be used for future development and planning by simple parameter adjustment.Description
Supervisor
Visala, ArtoThesis advisor
Moeller, ChristophKeywords
multibody, modelling, simulation, friction, hydraulics, parametrization