| Summary: | This thesis contains the Group Design Project (GDP) work and Individual
Research Project (IRP) work.
The target of this GDP was to design a long range flying wing passenger aircraft
to meet the increasing global aircraft demand. The name of this flying wing
aircraft is FW-11. This is a project cooperated between Aviation Industry
Corporation of China (AVIC) and Cranfield University. The writer was involved in
the conceptual design stage of this project. The author was in charge of the
engine market, engine selection, engine sizing and performance.
The target of the IRP is to build a set of health management methods including
system real-time monitoring, accurate fault diagnosis and prognosis of major
components which are suitable for the aircraft landing gear extension and
retraction control system. These technologies have the capability to improve
mission reliability of the aircraft and the maintenance costs could be reduced.
Simultaneously, aircraft landing gear extension and retraction control system, as
one of the most important aircraft systems on-board, could directly affect the
flight 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 and
retraction control system, each of the catastrophic events, all the root causes
and their effects were identified. Synchronously, all the components which are
related to the catastrophic events were found. The rule-based expert system
diagnostic technology was chosen from the available approaches and it was
successfully applied on the system. Appropriate prognosis approach was
recommended for each component of the system according to the features of
components of the system. Finally, the DPHM architecture of the landing gear
extension and retraction control system was built.
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