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General approach to enhance flying qualities via dynamic balancing of aircraft mass

Malaek, S. M ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.2514/1.29372
  3. Publisher: American Institute of Aeronautics and Astronautics Inc , 2008
  4. Abstract:
  5. This work describes a new mathematical model to predict the so-called aircraft handling qualities via proper positioning of aircraft mass in the early stages of the design process. The methodology aims to help make handling qualities and therefore pilot rating an integral part of the design process. The main idea is to And proper mass distributions for an aircraft in given flight conditions based on the well-known quantitative measures of flying qualities described in military standards. The proposed methodology allows aircraft designers to associate a density to different segments of an aircraft and have a prior insight about an optimum arrangement of internal parts such as fuel tanks, payload containers, passenger seats, and other massy items. Moreover, a new global optimization algorithm based on the Nelder-Mead Simplex method is devised to effectively solve the resulting optimization problem. This work shows how a B-747-100 could be mass balanced to achieve level-I flying qualities for both cruising and turning flights without using any stability augmentation system. Furthermore, the idea of a minimum effort generic control system is introduced that helps reduce the cost of aircraft certification
  6. Keywords:
  7. Aircraft seats ; Algorithms ; Fuel tanks ; Mathematical models ; Optimization ; Problem solving ; Structural design ; Aircraft mass ; Optimization algorithm ; Passenger seats ; Payload containers ; Aircraft
  8. Source: Journal of Aircraft ; Volume 45, Issue 1 , 2008 , Pages 130-141 ; 00218669 (ISSN)
  9. URL: https://arc.aiaa.org/doi/10.2514/1.29372