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Modeling and Design Analysis of an Aircraft Longitudinal Reversible Flight Control System and its Enhancement to Irreversible One

Ferdowsi, Mohammad | 2020

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 52982 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Pourtakdoust, Hossien; Raeesi Charmkani, Kamran
  7. Abstract:
  8. Flight control system (FCS) design, analysis and modeling has an important role in aircraft design and development process. However, FCS analysis and studies are rarely focused at university levels and its know-how and technical issues are almost proprietary to various aircraft industries. One of the key goals of this thesis is to express, introduce and implement the processes that need to be followed for a sample longitudinal reversible FCS design (RFCS), where the modelling aspects are described for an existing aircraft. The latter is achieved using existing drawings, system and aerodynamic data of an existing aircraft utilizing commercial tools such as CATIA for initial design and ADAMS for dynamic analysis and simulation.
    The developed FCS model results are generated and compared with the available actual aircraft data for verification and/or validation. Additionally, having developed the proper RFCS model via the above mentioned tools, the feasibility of its conversion to an irreversible FCS (IFCS) is also investigated. The latter is attended to by first looking into initial design requirements and available approaches for IFCS design. Finally, computations are performed for the same existing aircraft, where a draft specification for its key IFCS components in terms of the power pack and actuation mechanism are presented
  9. Keywords:
  10. Flight Control ; Aircraft Control System ; Hydraulic System Analysis ; Irreversible Flight Control System (IFCS) ; Reversible Flight Control System (RFCS)

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