Nacelle chine installation based on wind-tunnel test using efficient global optimization

Masahiro Kanazak, Yuzuru Yokokawa, Mitsuhiro Murayama, Takeshi Ito, Shinkyu Jeong, Kazuomi Yamamoto

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Design exploration of a nacelle chine installation was carried out. The nacelle chine improves stall performance when deploying multi-element high-lift devices. This study proposes an efficient design process using a Kriging surrogate model to determine the nacelle chine installation point in wind-tunnel tests. The design exploration was conducted in a wind-tunnel using the JAXA high-lift aircraft model at the JAXA Large-scale Low-speed Wind Tunnel. The objective was to maximize the maximum lift. The chine installation points were designed on the engine nacelle in the axial and chord-wise direction, while the geometry of the chine was fixed. In the design process, efficient global optimization (EGO) which includes Kriging model and genetic algorithm (GA) was employed. This method makes it possible both to improve the accuracy of the response surface and to explore the global optimum efficiently. Detailed observations of flowfields using the Particle Image Velocimetry method confirmed the chine effect and design results.

Original languageEnglish
Pages (from-to)146-150
Number of pages5
JournalTransactions of the Japan Society for Aeronautical and Space Sciences
Issue number173
Publication statusPublished - 2008


  • Efficient global optimization (ego)
  • High-lift system
  • Kriging model
  • Nacelle chine

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science


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