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Development of Rapid Evaluation and Optimization Software for Aircraft Conceptual Design

Hajipurzadeh, Pedram | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 47390 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Banazadeh, Afshin
  7. Abstract:
  8. Classical methods in aircraft conceptual aircraft design have some deficiencies in such as low accuracy in aerodynamic derivatives estimation and incapability of verifying flight handling quality. Moreover, application of experimental equations and dependence on statistical data are other drawbacks of classical methods which are accounted as big challenges in development of unusual aircrafts. In this research, a comprehensive, rapid and practical software is developed in order to promote the conceptual aircraft design. This software provides a platform to perform various tasks such as aerodynamic measurement, nonlinear simulation, system identification and optimization simultaneously. In aerodynamic derivetives estimation, instead of utilizing analytic or experimental equations, softwares like DATCOM and A.V.L are employed. After estimating aerodynamic derivatives, the dynamic behavior of the airplane is studied in different maneuvers using 6DoF nonlinear simulation. Next, Time history of simulation parameters is analyzed in frequency domain in order to identify dynamics modes and determine flight handling quality level. Finally, the aircraft configuration is modified using pattern search optimization algorithm in order to improve handling qualities
  9. Keywords:
  10. Nonlinear Simulation ; Optimization ; Software Development ; Frequency Identification ; Aircraft Conceptual Design ; Aerodynamic Estimation ; Frequency Domain Identification

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