Aircraft Hydraulic System Pump: A Reliability Analysis

Ndekiri Ezekiel Andenyangtso, John Agidani Junior, Joy Ali Kacahalla, Talatu Adamu, Ibrahim Ali Kachalla, Pashal Uchenna Chinedu, Abashe Tokan Caleb

Abstract


This paper examines typical failures of the hydraulic pumps of aircraft with the purpose of determining the reliability of the pumps. In this work, pumps were classified based on design features. Statistics of typical failures and malfunctions of the hydraulic pumps of Russian aircrafts such as NP-107, NP-72MV, NS-63, NS-46-2, NP-89D were collected with the aim of conducting a quantitative and qualitative analysis of reliability. The type of histograms, and, also the physical nature of the failure, indicated that the law of distribution of failures is close to log-normal. The theoretical law of the distribution of the operating time of a part before failure was used to determine gamma-percent resource. According to the calculation, it was found that the gamma-percent resource g = 10% is satisfied, therefore, the reliability level is sufficient.


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