Research on Hydraulic Tube Layout in Main Landing Gear Bay of Civil Aircraft

The flight control and landing gear systems of civil aircraft are generally driven by hydraulic system, which is the key system of aircraft. In the early days, common mode failures and events were not fully considered in the hydraulic system tube layout of passenger aircraft. However, with the occurrence of many air disasters caused by the unreasonable hydraulic system tube layout, people have a deeper understanding of the challenges of aircraft safety brought by the unreasonable hydraulic tube layout. The main landing gear bay is the intersection area of tire burst and rotor burst. How to rationally arrange the hydraulic system tube of passenger aircraft in this area has become an important subject to be solved. This paper takes a civil aircraft as an example to introduce a hydraulic tube layout method for main landing gear bay. This method focuses on the analysis of the influence of special risks such as tire burst and rotor burst on the safety of hydraulic system tube, and also makes a simulation of how the hydraulic tube meets the maintainability requirements. It provides a set of effective layout and analysis guidance method for the hydraulic tube of main landing gear bay.