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The influence of freeplay on the whirl flutter and nonlinear characteristics of rotor-nacelle systems
Rotor-nacelle systems are susceptible to aeroelastic instabilities, such as whirl flutter, which is affected by structural and/or aerodynamic...
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Design Optimization and Analysis of Exit Rotor with Diffuser Passage based on Neural Network Surrogate Model and Entropy Generation Method
In this paper, a diffuser passage compressor design is introduced via optimization to improve the aerodynamic performance of the exit rotor in a...
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An accumulated imaging method with phase-locking for rotor pressure-sensitive paint measurements
The evolution of pressure-sensitive paint (PSP)-based surface pressure measurement technology for rotating machinery is significant for flow...
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Investigation of tip leakage flow in spatial and temporal scales of axial isolated compressor rotor near stall
To conduct detailed investigations about tip leakage flow in spatial and temporal scale at near stall, a total pressure probe, stereo particle image...
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Dynamic Stall Computations of a Double-Swept Rotor Blade with Rigid and Elastic Modelling
Innovative helicopter rotor blades with a combined forward-backward double-sweep at the outer part of the blade enable a reduction in noise emission...
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The Passive Vibration Control in Bridge Configured Winding Cage Rotor Induction Motor: An Experimental Analysis
In electrical systems, very small eccentricity creates an asymmetric magnetic flux distribution in the air gap. Due to the eccentricity, these...
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Strength Analysis of Helicopter Tail Rotor Blades Made from Composite Materials
This work considers fatigue strength behavior of construction made from composite materials. Primary attention in this work is focused to fatigue...
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Vibration suppression of a rotor system with a nonlinear MR damper
This paper focuses on the influence mechanism of magnetorheological damper (MR damper) on the dynamic characteristics of a rotor system and its...
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Optimization of Duct Shape for Improving Aerodynamic Performance of Ducted Tail Rotor
Numerical simulations on the aerodynamics of helicopter ducted tail rotor in hover are conducted, and a surrogate-based optimization framework is...
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Research on a Robust Overset Grid Method for Load Calculation of Coaxial Rotor
In this paper, a robust overset grid assembly technology suitable for the coaxial rotor in flow field calculation is established and two kinds of...
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Dynamic analysis of rolling ball bearing-rotor based on a new improved model
Dynamic analysis for a bearing-rotor system with the imbalance and the asymmetric gap is conducted in this paper. A new improved analytical model...
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Effects of unbalance orientation on the dynamic characteristics of a double overhung rotor system for high-speed turbochargers
Part of the same type turbochargers installed on the automobile engines often exhibits considerable sub-synchronous vibration and uncomfortable...
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Prediction of Rotor Slot Size Variations in Induction Motor Using Polynomial Chirplet Transform and Regression Algorithms
For constant monitoring of rotor slot in induction motor, average rotor slot variation (ARSV) prediction is proposed. The rotor slots expand due to...
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Nonlinear Dynamics Simulation Analysis of Rotor-Disc-Bearing System with Transverse Crack
One of the main causes for failure in the rotor machine is the presence of internal cracks in the shaft rotating at high speed. The occurrence of...
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Modelling, Analysis, and Control of OmniMorph: an Omnidirectional Morphing Multi-rotor UAV
This paper introduces for the first time the design, modelling, and control of a novel morphing multi-rotor Unmanned Aerial Vehicle (UAV) that we...
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Effects of Axisymmetric Rotor Injection on the Aerodynamic Performances of a Single-Stage Transonic Axial Compressor
Using 3D-RANS equations with the k- ε turbulence model, this paper shows four parametric studies of axisymmetric rotor injection on aerodynamic...
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Numerical simulation of HVAB rotor in hover using a mixed-mesh flow solver
Numerical simulations of the HVAB were carried out by using a Reynolds-averaged Navier-Stokes computational fluid dynamics flow solver. For the...
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Effect of Nozzle Vane and Rotor Clearance on Performance of Variable Nozzle Turbine
In a variable nozzle turbine (VNT), the nozzle vane and rotor clearance can generate complicated tip leakage flow, which produces a large flow loss...
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Analysis of Aerodynamic Trim and Rotor/Propeller/Wing Interference Characteristics for High-Speed Composite Helicopter in Hover
The special configuration of rotor, fixed wing and thrust propellers is employed in the X3 high-speed composite helicopter to achieve Vertical...
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Analytical design of a special whirling cutter for a flawless cutting of the concave cycloid profile in whirling milling for various types of vacuum pump screw rotor
A vacuum pump mainly consists of intermeshing screw rotors, which apply a cycloid profile to enhance the operating performance. However, it yields a...
