Surrogate based design optimisation of composite aerofoil cross-section for helicopter vibration reduction

Murugan, Senthil; Ganguli, Ranjan; Harursampath, Dineshkumar

doi:10.1017/s0001924000007181

Cited by 19 publications

(11 citation statements)

References 43 publications

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“…Surrogate based optimization technique have been used earlier for the design of composite rotor blade [27,28]. However in these studies, only continuous design variables were considered.…”

Section: Optimization For Composite Structuresmentioning

confidence: 99%

New Hybrid Optimization for Design of Active Twist Rotors

Kumar

Cesnik²

2013

54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

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“…Surrogate based optimization technique have been used earlier for the design of composite rotor blade [27,28]. However in these studies, only continuous design variables were considered.…”

Section: Optimization For Composite Structuresmentioning

confidence: 99%

New Hybrid Optimization for Design of Active Twist Rotors

Kumar

Cesnik²

2013

54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

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“…Research on this technology has always been considered and explored by many different countries. The most effective way to improve the helicopter rotor noise and radar stealth abilities is to reduce their aerodynamic noise and radar scattering characteristics [2][3][4]. On the one hand, aerodynamic noise is one of the main noise sources of helicopter rotors, including thickness noise, loading noise, and highspeed impulse (HSI) noise.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Optimization Design Method of Aerodynamic, Acoustic, and Stealth of Helicopter Rotor Blades Based on Genetic Algorithm

Pan

Huang

et al. 2019

Mathematical Problems in Engineering

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In this paper, a comprehensive optimization approach is presented to analyze the aerodynamic, acoustic, and stealth characteristics of helicopter rotor blades in hover flight based on the genetic algorithm (GA). The aerodynamic characteristics are simulated by the blade element momentum theory. And the acoustics are computed by the Farassat theory. The stealth performances are calculated through the combination of physical optics (PO) and equivalent currents (MEC). Furthermore, an advanced geometry representation algorithm which applies the class function/shape function transformation (CST) is introduced to generate the airfoil coordinates. This method is utilized to discuss the airfoil shape in terms of server design variables. The aerodynamic, acoustic, and stealth integrated design aims to achieve the minimum radar cross section (RCS) under the constraint of aerodynamic and acoustic requirement through the adjustment of airfoil shape design variables. Two types of rotor are used to illustrate the optimization method. The results obtained in this work show that the proposed technique is effective and acceptable.

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“…Surrogate-based optimization techniques have been used earlier for the design of the composite rotor blade [22,23] and for the design of an active rotor blade with a Gurney flap in [24]. However, in these studies, only continuous design variables were considered.…”

Section: Introductionmentioning

confidence: 99%

New Optimization Strategy for Design of Active Twist Rotor

Kumar

Cesnik

2015

AIAA Journal

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This paper presents the development of a mixed-variable optimization framework for the aeroelastic analysis and design of active twist rotors. Proper tailoring of the blade properties can lead to the maximization of the active twist and the control authority for vibration reduction under operating conditions. Thus, using mathematical optimization, the cross-sectional layout is designed using continuous and discrete design variables for an active composite rotor blade to maximize the dynamic active twist while satisfying a series of constraints on blade cross-section parameters, stiffness, and strength. The optimization framework developed includes the Intelligent Cross-Section Generator as the cross-section and mesh generator, University of Michigan/Variational Asymptotic Beam Sectional analysis code for active cross-sectional analysis, and Rotorcraft Comprehensive Analysis Software for aeroelastic analysis of the active twist rotor blade. The optimization problem is solved using a surrogate-based approach in combination with the Efficient Global Optimization algorithm. In this paper, the results with mixed design variables are obtained with three different techniques and are compared with the results obtained using continuous design variables.= elastic modulus (where i is equal to 1, 2, and 3), N∕m 2 F z4 = amplitude of vertical force at the hub corresponding to 4∕rev frequency, N G ij = shear modulus, N∕m 2 M X = rolling moment at the hub in fixed frame, N · m M Y = pitching moment at the hub in fixed frame, N · m M 11 = mass per unit length, kg∕m R = blade radius, m S 44 = cross-sectional torsional stiffness, N · m 2 ε ij = cross-sectional strains θ i∕rev = amplitude of dynamic twist corresponding to i∕rev frequency (where i is equal to 3, 4, and 5), deg θ i∕rev;max = maximum amplitude of dynamic twist obtained from optimization at i∕rev actuation frequency (where i is equal to 3, 4, and 5), deg θ stat = static twist per unit length, deg ∕m θ 345∕rev = nondimensionalized amplitude of dynamic twist corresponding to 3, 4, and 5∕rev frequencies μ = advance ratio

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Surrogate based design optimisation of composite aerofoil cross-section for helicopter vibration reduction

Cited by 19 publications

References 43 publications

New Hybrid Optimization for Design of Active Twist Rotors

New Hybrid Optimization for Design of Active Twist Rotors

A Comprehensive Optimization Design Method of Aerodynamic, Acoustic, and Stealth of Helicopter Rotor Blades Based on Genetic Algorithm

New Optimization Strategy for Design of Active Twist Rotor

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