AIRCRAFT LANDING GEAR SHOCK STRUT PERFORMANCE MONITORING

摘要

A system and various methods for monitoring and evaluating the health of a shock strut assembly are illustrated. Multiple sensors, including gas temperature, gas pressure, oil pressure, and position sensor, may be used to gather data and evaluate the performance of the shock strut assembly. Various methods illustrated herein may evaluate the dynamic damping, static load support, and/or controlled stroke performance of the shock strut assembly.

主权项

1. A method for monitoring the performance of a shock strut system comprising:
providing a shock strut mechanically coupled to a landing gear assembly and comprising a position sensor configured to measure a stroke of the shock strut and an oil chamber pressure sensor configured to measure an oil pressure within the shock strut; measuring the oil pressure during a take-off phase; measuring the stroke during the take-off phase; evaluating a minimum recorded oil pressure and comparing the minimum recorded oil pressure to a threshold pressure; evaluating an impact speed of the shock strut and comparing the impact speed to a threshold impact speed; and evaluating an average stroke rate of the shock strut and comparing the average stroke rate with a threshold stroke rate.