Health Assessment of Landing Gear Retraction/Extension Hydraulic System Based on Improved Risk Coefficient and FCE Model

The health of the landing gear retraction/extension(R/E) hydraulic system may be assessed using fuzzy comprehensive evaluation (FCE), however traditional FCE method depends solely on human assessment by specialists, which is excessively subjective. To address issue excessive subjective variables in assessment, an improved model based enhanced risk coefficient provided, includes four consideration indexes: failure probability, severity, detection difficulty, and repair difficulty. reduce judgment errors entirely due to expert experience, takes into account likelihood a statistical method, severity fault simulation analysis LMS Imagine.Lab AMESim platform, difficulty aircraft manufacturer’s professional maintenance information. As part model, range values accompanying treatment methods are included, making it easier implement daily basis maintenance. final step, evaluated, simulated faults calculated.