Landing gear failures connected with high-pressure hoses and analysis of trends in aircraft technical problems

    Mykola Karpenko   Affiliation


Reliability and maintenance analysis in aviation industry focused on a main objective of the accident and incident investigations what are help to better understand the causes of accidents. In the article suggested the underlying concept by scorecard of situations what lead to aviation accidents. In the present research, the aviation accident connected with a landing gear and a problem of failure to follow maintenance instructions during a maintenance on aircraft landing gear hydraulic drive was under an investigation, on an example of root cause analysis of the failure of hydraulic flexible highpressure hoses. The approach presented in this research of experimental measurements, based on fluid pressure measuring, high-pressure hoses vibration measuring and frequency’s analysis. By spectrum analyses was found that high-pressure hoses are most susceptible to deformation at frequencies to the response of the fluid within, as well as at hoses material resonance frequencies. The compact version of hoses is more deformational on the resonance points than a standard version of hose. In final according to analyses, was established that disrespect of the frequency conditions was leaded to causes irreversible degradation changes of the hose inner structure and occurrence of material defects inside layers contact what lead in final step to hose failure.

Keyword : aircraft, landing gear, hydraulic drive, high-pressure hose, failure, maintenance, risk scorecard, non-destructive diagnostics

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Karpenko, M. (2022). Landing gear failures connected with high-pressure hoses and analysis of trends in aircraft technical problems. Aviation, 26(3), 145–152.
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Oct 12, 2022
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