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Yongchuan Wu, Gang Sun and Jun Tao
In this study, a multi-objective aerodynamic optimization is performed on the rotor airfoil via an improved MOPSO (multi-objective particle swarm optimization) method. A database of rotor airfoils containing both geometric and aerodynamic parameters is e...
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Weihong Kong and You Li
The large reverse flow region of the rotor with a high advance ratio is an important factor that affects the performance improvement of helicopters. This paper examines the dynamic stall of the airfoil in the reverse flow region of the rotor to develop a...
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Changwu Liang, Hong Li, Taoyong Su, Caleb Alistair Frank and Kewei Li
An electrically controlled rotor (ECR), also known as a swashplateless rotor, eliminates the swashplate system to implement the primary control via the trailing-edge flaps (TEFs), which can result in enhancements in rotor performance, as well as substant...
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Setiadi Wira Buana, Putty Yunesti, Guna Bangun Persada, Abdul Muhyi
Pág. 86 - 90
This research aims to determine performance of turbine rotor performance with a single rotor blade model with a diameter of 0.6 m that has been developed by NORCOWE, while for turbine rotor blades used is the NREL S826 airfoil series. The wind turbines a...
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Setiadi Wira Buana, Putty Yunesti, Guna Bangun Persada, Abdul Muhyi
Pág. 86 - 90
This research aims to determine performance of turbine rotor performance with a single rotor blade model with a diameter of 0.6 m that has been developed by NORCOWE, while for turbine rotor blades used is the NREL S826 airfoil series. The wind turbines a...
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Zhaoyong Mao, Tianqi Zhang, Guangyong Yang and Wenlong Tian
Gurney flaps can enhance the hydrodynamic efficiency of airfoils, and they are currently used in several applications, including racing cars and wind turbines. However, there is a lack of studies in the literature on the application of Gurney flaps on th...
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Liang Li, Ming Chen, Fang Wang, Zhichen Wu and Anan Xu
In this work, the flow field of an autorotating rotor in a water tunnel with various pitches and shaft backward angles was investigated via particle image velocimetry (PIV). The experiments were carried out on a free-rotating two-bladed single rotor. Com...
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Xiancheng Gu, Linghua Dong, Tong Li and Weidong Yang
An active rotor with trailing-edge flaps (TEFs) is an effective active vibration control method for helicopters. Blade flapping dynamic characteristics have a significant effect on the active vibration control performance of an active rotor. In this stud...
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Sanjay Nikhade,Suhas Kongre,S. B. Thakre,S. S. Khandare
Pág. 11 - 18
This paper presents a combined experimental and Computational Fluid Dynamics (CFD) simulation of Micro wind Turbine with 2.28 meters rotor Diameter is performed using the FLUENT 16.2 WORKBENCH. A Micro Horizontal Axis Three Blade Wind Turbine was designe...
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Pengyue Zhao, Xifeng Gao, Bo Zhao, Huan Liu, Jianwei Wu and Zongquan Deng
The aerodynamic properties of rotor systems operating within low Reynolds number flow field conditions are profoundly influenced by their geometric and flight parameters. Precise estimation of optimal airfoil parameters at different angles of attack is i...
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Jason Cornelius, Sven Schmitz, Jose Palacios, Bernadine Juliano and Richard Heisler
This work details the development and validation of a methodology for high-resolution rotor models used in hybrid Blade Element Momentum Theory Unsteady Reynolds Averaged Navier?Stokes (BEMT-URANS) CFD. The methodology is shown to accurately predict sing...
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Jiayu Wen, Yanguo Song, Huanjin Wang and Dong Han
This work presents a systematic approach to analyzing the aerodynamic characteristics of tandem rotor forward autorotation considering rotor-to-rotor interference. The single-rotor computational model trimmed from a generic helicopter flight dynamics ana...
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Abdallah Samad, Eric Villeneuve, Caroline Blackburn, François Morency and Christophe Volat
Successful icing/de-icing simulations for rotorcraft require a good prediction of the convective heat transfer on the blade?s surface. Rotorcraft icing is an unwanted phenomenon that is known to cause flight cancelations, loss of rotor performance and se...
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Alessandro Vulpio, Alessio Suman, Nicola Casari and Michele Pinelli
Helicopters often operate in dusty sites, ingesting huge amounts of contaminants during landing, take-off, hover-taxi, and ground operations. In specific locations, the downwash of the rotor may spread soil particles from the ground into the environment ...
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Abdallah Samad, Gitsuzo B. S. Tagawa, François Morency and Christophe Volat
Calculating the unsteady convective heat transfer on helicopter blades is the first step in the prediction of ice accretion and the design of ice-protection systems. Simulations using Computational Fluid Dynamics (CFD) successfully model the complex aero...
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Yuval Keren, Haim Abramovich and Rimon Arieli
To propel a lightweight structure, a hybrid wing structure was designed; the wing?s geometry resembled a rotor blade, and its flexibility resembled an insect?s flapping wing. The wing was designed to be flexible in twist and spanwise rigid, thus maintain...
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Holger Werschnik, Marius Schneider, Janina Herrmann, Dimitri Ivanov, Heinz-Peter Schiffer and Christoph Lyko
The aerothermal interaction of the combustor exit flow on the first vane row has been examined at the Large Scale Turbine Rig (LSTR) at Technische Universität Darmstadt (Darmstadt, Germany). A baseline configuration of axial inflow and a variation of swi...
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Yin Ruan and Manfred Hajek
Dynamic stall is a phenomenon on the retreating blade of a helicopter which can lead to excessive control loads. In order to understand dynamic stall and fill the gap between the investigations on pitching wings and full helicopter rotor blades, a numeri...
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