This thesis contains the Group Design Project (GDP) work and IndividualResearch Project (IRP) work.The target of this GDP was to design a long range flying wing passenger aircraftto meet the increasing global aircraft demand. The name of this flying wingaircraft is FW-11. This is a project cooperated between Aviation IndustryCorporation of China (AVIC) and Cranfield University. The writer was involved inthe conceptual design stage of this project. The author was in charge of theengine market, engine selection, engine sizing and performance.The target of the IRP is to build a set of health management methods includingsystem real-time monitoring, accurate fault diagnosis and prognosis of majorcomponents which are suitable for the aircraft landing gear extension andretraction control system. These technologies have the capability to improvemission reliability of the aircraft and the maintenance costs could be reduced.Simultaneously, aircraft landing gear extension and retraction control system, asone of the most important aircraft systems on-board, could directly affect theflight safety. Consequently, diagnostic, prognostic and health management(DPHM) technology is necessary for the system.Based on the FHA, FMEA and FTA of the aircraft landing gear extension andretraction control system, each of the catastrophic events, all the root causesand their effects were identified. Synchronously, all the components which arerelated to the catastrophic events were found. The rule-based expert systemdiagnostic technology was chosen from the available approaches and it wassuccessfully applied on the system. Appropriate prognosis approach wasrecommended for each component of the system according to the features ofcomponents of the system. Finally, the DPHM architecture of the landing gearextension and retraction control system was built.
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