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241
Investigation and Improvement of Stall Characteristic of High-Lift Configuration without Slats
Published 2019-01-01“…Focusing on the low-speed stall and poststall conditions, we investigated the aerodynamic characteristics and flow mechanism of high-lift configuration without slats using an improved delayed detached eddy simulation (IDDES) model which is validated by numerical simulations of the Common Research Model (CRM). …”
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242
An Algorithm for Global Optimization Inspired by Collective Animal Behavior
Published 2012-01-01“…These collective behaviors are often advantageous to groups, allowing them to increase their harvesting efficiency, to follow better migration routes, to improve their aerodynamic, and to avoid predation. In the proposed algorithm, the searcher agents emulate a group of animals which interact with each other based on the biological laws of collective motion. …”
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243
Flight Dynamics Modeling and Dynamic Stability Analysis of Tilt-Rotor Aircraft
Published 2019-01-01“…The results show that the flight speed and nacelle angle would affect the magnitude and the trend of the aerodynamic derivatives. The damping of the pitch short period mode and the Dutch roll mode is insensitive to flight speed while they could be affected by nacelle angle. …”
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244
Dynamic Gust Load Analysis for Rotors
Published 2016-01-01“…The generalized dynamic wake model and Leishman-Beddoes dynamic stall model are applied to calculate the nonlinear unsteady aerodynamic forces on rotors. Then, we transformed the differential aeroelastic governing equation to an algebraic one. …”
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245
A fault tolerant control for iced aircraft based on fixed-time incremental dynamic inversion with FTESO
Published 2024-12-01“…Icing seriously affects the aerodynamic coefficients and flight performance of an aircraft. …”
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246
Dynamic Characteristics of Blade with Viscoelastic Damping Block Based on Complex Eigenvalue Method
Published 2018-01-01“…The dynamical equation for a rotational viscoelastic damping block-blade (VE-blade) in a centrifugal force field and aerodynamic force field is established to calculate the dynamical natural frequency and responses of the VE-blade. …”
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247
Impulse Force Balance for Ultrashort Duration Hypersonic Test Facilities
Published 2015-01-01“…The accelerometer outputs from the model in the hypersonic freestream were processed using the respective impulse response functions to derive the unknown aerodynamic force and moments. The newly adopted convolution technique has been found very effective for data reduction from accelerometer force balances developed for shock tunnel applications.…”
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248
Polnische Nasalvokale, grafisch geschrieben als <ę> und <ą>. Eine Vielzahl von Studien zur auditiven, artikulatorischen und akustischen Phonetik
Published 2025-02-01“…Research on nasal vowels aimed to better understand functioning of muscles controlling the activity of the soft palate and pharyngeal wall, analysing velar-pharyngeal movements, and aerodynamic conditions created by the varied movements of active articulators. …”
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249
EFFECTS OF CONTINUOUS AND FRACTURED RIBS PLACED AT THE ENDWALL SURFACE UPSTREAM OF THE TURBINE-VANE LEADING-EDGE
Published 2024-07-01“…Huge amount of energy from the cross-flows near the middle of the vane actual chord are transported downstream by this chaotic flow which often results in aerodynamic loss and differential heat penalties. To compare the different arrangement, comparisons of the two geometries, the impact of adding various rib configurations upstream are studied for heat augmentation efficacies. …”
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250
Theoretical and Numerical Studies of Dynamic Scaling of a Six-Degree-of-Freedom Laser Propulsion Vehicle
Published 2015-01-01“…Motion equivalence was maintained for multiple pulses by adjusting the repetition frequency of the pulse incident to correct for the effect of aerodynamic drag during the free flight of the pulse-to-pulse interval. …”
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251
Interpolation-Based Modeling Methodology for Efficient Aeroelastic Control of a Folding Wing
Published 2021-01-01“…The underlying inconsistencies among local linear time-invariant (LTI) models are solved through the modal matching of structural modes and the special treatment of the rational functions in aerodynamic models. Once the local LTI models are represented in a coherent state-space form, the aeroservoelastic (ASE) model at any operating point can be immediately generated by the matrix interpolation technique. …”
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252
Fuel Economy in Truck Platooning: A Literature Overview and Directions for Future Research
Published 2020-01-01“…Several studies have proved that traveling in platoons can significantly improve fuel economy due to the reduced aerodynamic drag. However, most literature only provides scattered pieces of information regarding fuel economy in truck platoons. …”
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253
Estimating the Evaporation from Irrigation Canals in Northwestern China Using the Double-Deck Surface Air Layer Model
Published 2016-01-01“…The evaporation from irrigation canals was estimated by the aerodynamic method based on the double-deck surface air layer model (called “DSAL model” for short hereafter). …”
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254
Research on RBV Control Strategy of Large Angle Maneuver
Published 2014-01-01“…Firstly, considering the nonlinear characteristics of aerodynamic coefficients varying with Mach numbers, attack angle, and sideslip angle, the complete nonlinear 6-DOF model of RBV is established. …”
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255
A Time Efficient Adaptive Gridding Approach and Improved Calibrations in Five-Hole Probe Measurements
Published 2015-01-01“…Five-Hole Probes (FHP), being a dependable and accurate aerodynamic tool, are an excellent choice for measuring three-dimensional flow fields in turbomachinery. …”
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256
Development of Anisogrid Lattice Composite Structures for Fighter Wing Applications
Published 2024-01-01“…Various lift distributions, including triangular, Schrenk, and constant, are applied to evaluate the structure’s response to static failure caused by aerodynamic loads. The anisogrid structure design incorporates inclined lattice elements between ribs and spars, with spar arrangement in the wing box featuring an anisogrid configuration. …”
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257
Influencing Factors on Vehicles Lateral Stability on Tunnel Section in Mountainous Expressway under Strong Wind: A Case of Xi-Han Highway
Published 2020-01-01“…When a car is running at high speed, the canyon wind at the bridge-tunnel junction in the mountainous area brings along the acceleration effect. The aerodynamic lateral force will cause the vehicle sideslip and unsteady steering, which is extremely harmful to driving safety. …”
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258
Numerical Simulation of Helicopter Rotor Performance Degradation in Natural Rain Encounter
Published 2021-01-01“…This problem can be mainly attributed to the aerodynamic performance degradation of aircraft. In this article, in order to quickly understand the influence of rainfall aiming at the engineering application, an approach to predict helicopter rotor performance degradation in heavy rain encounters is presented. …”
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259
Nonlinear Dynamics of the High-Speed Rotating Plate
Published 2018-01-01“…The rotating blades under working condition frequently suffer from the aerodynamic, elastic and inertia loads, which may lead to large amplitude nonlinear oscillations. …”
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260
Porous ground treatments for propeller noise reduction in ground effect
Published 2025-01-01“…Abstract This study investigates the aerodynamic and aeroacoustic behavior of propellers operating in ground-effect conditions, with an emphasis on the impact of porous ground surface treatments. …”
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