Improving the Aerodynamics of the Straight Wing with Slanted Tips and Floats by Adding a Triangular Protrusion

Aviation technics and technology


Аuthors

Sakornsin R. *, Popov S. A.**

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: rattapols@hotmail.com
**e-mail: flowmech@mail.ru

Abstract

The paper aims at conducting numerical studies of the effect of triangular protrusion on the aerodynamic characteristics of seaplane wing.
The research was carried out with the help of a numerical flow calculation method by using ANSYS Fluent 14.5 software package (license number 670351).
Observations of the typical planform of the birds’ wings and analysis of the possible positive influence of the vortices on the wing aerodynamics have inspired the usage of a triangular protrusion for the wings of modern seaplanes.
A series of numerical calculations has been carried out with the help of the ANSYS Fluent computational fluid dynamics software system to determine the total aerodynamic coefficients and model the flow pattern in the vicinity of the wing. Calculations confirmed the positive effect of the triangular protrusions on the aerodynamics of a seaplane wing. The wing drag was reduced significantly. The value of aerodynamic efficiency was increased by more than seven units.
The results of the research can be used in seaplane aerodynamics.
The paper proposes a new wing planform shape. In the proposed shape the triangular protrusion plays the role of a vortex generating element, the use of which allows improving the aerodynamic characteristics of the seaplane wing significantly.

Keywords:

amphibious aircraft, bird wing, wing with triangular protrusion, the Reynolds-averaged Navier-Stokes equations, turbulence models, aerodynamic coefficients

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