Analyses on ducted tail rotor and airfoil aerodynamic characteristics with CFD

Authors: Yihua Cao; Ke Chen; Jian Wang

Source: Aircraft Engineering and Aerospace Technology: An International Journal, Volume 77, Number 1, 2005 , pp. 62-67(6)

Publisher: Emerald Group Publishing Limited

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Abstract:

Purpose - To establish a method for the calculations in the field of rotor aerodynamics.Design/methodology/approach - The calculations of the lift-drag characteristics of OAF and NACA63A312 airfoils at low speed are made using Jameson/TVD mixed scheme. By means of finite volume approach for numerical discretization and Runge-Kutta time-stepping advance, Euler/Navier-Stokes equations are solved. Furthermore, a model based on circular tiny segment momentum theory and blade element theory is established to study the thrust and power of ducted tail rotor.Findings - The results of the calculation demonstrate the feasibility of the established method for analyzing ducted tail rotor aerodynamic characteristics.Research limitations/implications - Although the global thrust and power of ducted tail-rotor could be obtained using current method, the exact flow filed (such as shroud pressure field and the flow over fan blade) calculations still rely on the complex three-dimensional CFD technique that should be studied in future.Practical implications - A very useful method for the preliminary design of the ducted tail rotor.Originality/value - By comparing the calculated results with those of relevant experiment, it is proved that the method developed here is suitable for the calculations in the field of rotor aerodynamics.

Keywords: Aerodynamics; Rotary Engines; Finite Volume Methods

Document Type: Research article

DOI: http://dx.doi.org/10.1108/00022660510576055

Publication date: 2005-01-01