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New Engine Bay Design For IRAN-140 Aircraft's Auxiliary Power Unit by Damage Tolerance Theory

Jahanian Najafabadi, Hamid | 2009

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 40030 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Adib Nazari, Saeed
  7. Abstract:
  8. Different reasons, all structures have inside crack or surface crack when crack growth is more at the frequancy load and it is one of the main factor in the diagnosis of structural life that this sensitivity is much greater aerial parts industry. The aim of this project, designing a new structure for the auxiliary engine compartment of the aircraft with the damage tolerance theory for cargo aircraft within the country are making. In the first stage after reviewing activitation past, the evaluation design rules between each company design its obligations, standards in design and then conceptual plan to make. Then reload force plan to make. At this stage with regard to maneuver the airplane and the design rules mentioned, to help designing books, reload on a new structure to make. Then help software modeling project is done.The stress analysis subsets of the total structure installation is done . Obviously, this stage results may see some analysis of structural design is not satisfactory and needs to be designed to re-structure. process to select course material is important that the position piece and the conditions is considered. After this stage, damage tolerance design is attention and assist Topics Mechanical failure shall be investigated. in this section with regard to design rules, design methods based on the design for the damage is done . then the method mentioned modeling and analysis of cracks in fracture mechanics of the Apu engine mount is done and then charts the results and analysis are described. Finally, if the design life of the aircraft type obtained come.
  9. Keywords:
  10. Fracture Mechanics ; Damage Tolerance ; Iran-140T Aircraft ; Auxilary Power Unit (APU) ; Structure

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