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The new concept to place the vertical airfoil device as control surface has been discovered so as to improve the aerodynamic performance of aircraft. The concept was predicated on not only the several devices as vortex generator and winglet but also the wing-mounted engine system of the HondaJet. Thereupon, the wind tunnel experiment has been implemented in order to investigate the influence of the vertical control device with the symmetrical airfoil shape. Furthermore, a self-organizing map as data mining has been performed for the experimental data in order to qualitatively elucidate the correlations among the aerodynamic performances as design requirements and the design parameters to place the vertical control device. Consequently, it has been revealed the design information regarding the intimate correlations. Moreover, there is the sweet spot in the design space to improve the aerodynamic performances.

Vertical device, Control surface, Aerodynamics of aircraft, Data mining, Self-organizing map