Rotorcraft Blade-Vortex Street Interactions: Critical Aerodynamic Aspects

Patricia Coronado; Carlos Velez; Marcel Ilie

doi:10.2514/6.2013-805

Rotorcraft Blade-Vortex Street Interactions: Critical Aerodynamic Aspects

Patricia Coronado, Carlos Velez, Marcel Ilie

Mechanical Engineering

University of Central Florida

Research output: Contribution to book or proceeding › Chapter

Abstract

Numerical investigations of helicopter blade-vortex mechanism of interaction are performed using large eddy simulation (LES). The simulations were performed for a Reynolds number, Re=1.3x10^6, based on the chord, c, of the airfoil (NACA0012). Computations are carried out for two different types of blade-vortex interactions, concerning single and respectively two vortices blade interaction. It was observed that for single vortex-blade interaction, the blade-vortex interaction becomes less significant with the increase of vertical miss distance. Larger amplitudes of aerodynamic coefficients were observed for the case of two vortices-blade interaction when compared with the single vortex blade interactions.

Original language	American English
Title of host publication	Proceedings of the Aerospace Sciences Meeting
DOIs	https://doi.org/10.2514/6.2013-805
State	Published - Jan 7 2013

Keywords

Blade-vortex
Critical aerodynamic aspects
Rotorcraft
Street interactions

DC Disciplines

Mechanical Engineering

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title = "Rotorcraft Blade-Vortex Street Interactions: Critical Aerodynamic Aspects",

abstract = " Numerical investigations of helicopter blade-vortex mechanism of interaction are performed using large eddy simulation (LES). The simulations were performed for a Reynolds number, Re=1.3x10^6, based on the chord, c, of the airfoil (NACA0012). Computations are carried out for two different types of blade-vortex interactions, concerning single and respectively two vortices blade interaction. It was observed that for single vortex-blade interaction, the blade-vortex interaction becomes less significant with the increase of vertical miss distance. Larger amplitudes of aerodynamic coefficients were observed for the case of two vortices-blade interaction when compared with the single vortex blade interactions.",

keywords = "Blade-vortex, Critical aerodynamic aspects, Rotorcraft, Street interactions",

author = "Patricia Coronado and Carlos Velez and Marcel Ilie",

year = "2013",

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doi = "10.2514/6.2013-805",

language = "American English",

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T1 - Rotorcraft Blade-Vortex Street Interactions: Critical Aerodynamic Aspects

AU - Coronado, Patricia

AU - Velez, Carlos

AU - Ilie, Marcel

PY - 2013/1/7

Y1 - 2013/1/7

N2 - Numerical investigations of helicopter blade-vortex mechanism of interaction are performed using large eddy simulation (LES). The simulations were performed for a Reynolds number, Re=1.3x10^6, based on the chord, c, of the airfoil (NACA0012). Computations are carried out for two different types of blade-vortex interactions, concerning single and respectively two vortices blade interaction. It was observed that for single vortex-blade interaction, the blade-vortex interaction becomes less significant with the increase of vertical miss distance. Larger amplitudes of aerodynamic coefficients were observed for the case of two vortices-blade interaction when compared with the single vortex blade interactions.

AB - Numerical investigations of helicopter blade-vortex mechanism of interaction are performed using large eddy simulation (LES). The simulations were performed for a Reynolds number, Re=1.3x10^6, based on the chord, c, of the airfoil (NACA0012). Computations are carried out for two different types of blade-vortex interactions, concerning single and respectively two vortices blade interaction. It was observed that for single vortex-blade interaction, the blade-vortex interaction becomes less significant with the increase of vertical miss distance. Larger amplitudes of aerodynamic coefficients were observed for the case of two vortices-blade interaction when compared with the single vortex blade interactions.

KW - Blade-vortex

KW - Critical aerodynamic aspects

KW - Rotorcraft

KW - Street interactions

UR - https://doi.org/10.2514/6.2013-805

U2 - 10.2514/6.2013-805

DO - 10.2514/6.2013-805

M3 - Chapter

BT - Proceedings of the Aerospace Sciences Meeting

ER -

Rotorcraft Blade-Vortex Street Interactions: Critical Aerodynamic Aspects

Abstract

Keywords

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