Results 61 to 70 of about 511 (182)

Multifidelity Sensitivity Study of Subsonic Wing Flutter for Hybrid Approaches in Aircraft Multidisciplinary Design and Optimisation

Aerospace, 2020
A comparative sensitivity study for the flutter instability of aircraft wings in subsonic flow is presented, using analytical models and numerical tools with different multidisciplinary approaches.
Marco Berci, Francesco Torrigiani
doaj   +1 more source

A Multistage Rotor Imbalance Diagnosis Method for Horizontal‐Axis Wind Turbines Based on an Expert System and Improved Convolutional Neural Networks

IET Cyber-Physical Systems: Theory &Applications, Volume 11, Issue 1, January/December 2026.
An integrated identification and estimation framework for full‐dimension rotor imbalance in wind turbines is proposed, combining an expert system with deep learning to realise imbalance detection, magnitude estimation and angular positioning under varying wind conditions.
Chang Liu, Kunzhong Lv, Yanjun Sun
wiley   +1 more source

Hierarchical Response Control Method for Voltage Support in DFIGs Considering Fatigue Loads

IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
This paper proposes a hierarchical response control (HRC) method to address the increased fatigue load on wind turbines during reactive power support for grid voltage stability. By establishing a fatigue sensitivity model and dynamically adjusting control parameters, the method optimally allocates reactive power while avoiding critical shaft ...
Bin Yang, Xiaodong Wang, Yingwei Wang, Sheng Chang, Deyi Fu, Xing Gao, Xianjiang Hu, Yingming Liu   +7 more
wiley   +1 more source

The Effect of Variation in the Interlayer Spacing of a Double‐Layer Truss Bridge on the Bridge Deck Wind Environment

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
Double‐layer truss bridges are widely used in long‐span crossings due to their high load‐carrying capacity and structural efficiency. However, their complex truss configurations significantly alter the wind field around the deck, posing potential challenges to driving safety and comfort.
Kunping Chen, Hongrui Zhang, Haochao Wang, Jinxiang Zhang, Meng Gao   +4 more
wiley   +1 more source

Advanced aeroelastic robust stability analysis with structural uncertainties [PDF]

CEAS Aeronautical Journal, 2020
AbstractRobust flutter analysis described in this paper is based on the robust control theory framework. Therefore, a time-domain linear fractional transformation representation of the perturbed aeroelastic system is modeled. Then, the robust stability is analyzed by means of the structured singular value$$\mu$$μ, which is defined as an alternative ...
openaire   +2 more sources

Improving Aeroelastic Stability of Bladed Disks with Topologically Optimized Piezoelectric Materials and Intentionally Mistuned Shunt Capacitance. [PDF]

Materials (Basel), 2022
Liu X, Fan Y, Li L, Yu X.
europepmc   +1 more source

Wind Turbine Aeroelastic Stability in OpenFAST

Journal of Physics: Conference Series
Abstract Wind turbines are growing in size and increasingly suffer from aeroelastic instabilities. Unfortunately, numerical models often show inconsistent results during verification studies. We address this gap by first introducing novel linearization capabilities within the open-source aero-hydro-servo-elastic framework OpenFAST. Next,
Bortolotti, Pietro, Chetan, Mayank, Branlard, Emmanuel, Jonkman, Jason, Platt, Andy, Slaughter, Derek, Rinker, Jennifer; id_orcid 0000-0002-1122-1891   +6 more
openaire   +1 more source

Effect of Intake Acoustic Reflection on Blade Vibration Characteristics

Aerospace
Recent studies in turbomachinery have shown that the phase of acoustic wave reflection within an intake can have either positive or negative effects on the aeroelastic stability of fan rotor blades. However, the typical flow structures, such as the shock
Hui Yang, Hui Liang, Yun Zheng
doaj   +1 more source

Identification of Aeroelastic Models for the X-56A Longitudinal Dynamics Using Multisine Inputs and Output Error in the Frequency Domain

Aerospace, 2019
System identification from measured flight test data was conducted using the X-56A aeroelastic demonstrator to identify a longitudinal flight dynamics model that included the short period, first symmetric wing bending, and first symmetric wing torsion ...
Jared A. Grauer, Matthew J. Boucher
doaj   +1 more source

High-Fidelity Aeroelastic Analysis of a Wind Turbine Using a Nonlinear Frequency-Domain Solution Method

Energies
This paper investigates the aeroelastic behaviour of a full wind turbine model with realistic blade vibration amplitude (9% span) using a nonlinear frequency-domain solution method.
Shine Win Naung, Mohammad Rahmati, Htet Shine   +2 more
doaj   +1 more source