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Multidisciplinary Design Optimization of Sounding Rocket Fins Shape Using a Tool Called MDO-SONDA

Abstract:

Multidisciplinary design optimization is a promising field in aerospace engineering. However, advances in this field have not been applied yet to improve Brazilian sounding rockets, such as the VS-40. Therefore, to give a perspective of the multidisciplinary design optimization in this context, this work presented a case study of this rocket, which consists ofthe shape optimization of its fins. To achieve this goal, a special tool called MDO-SONDA, which is the main contribution of this work, was developed. Its current version interacts with two high-fidelity executable codes, one of aerodynamics and another of trajectory, exploiting the synergy between both disciplines. The MDO-SONDA is based on a multiobjective genetic algorithm whose real operator was originally designed in this work. By using the proposed tool, it was found that the drag due to the rocket fins could be reduced up to 29% without increasing the chances of adverse effects that could lead to unstable behaviors.

Keywords:
Sounding rocket; Rocketfin design; Multidisciplinary design optimization; Multiobjective genetic algorithms

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Publication Dates

  • Publication in this collection
    Oct-Dec 2012

History

  • Received
    31 July 2012
  • Accepted
    08 Oct 2012
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