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361
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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362
Emergency Flight Control Based on the Fan Wing
Published 2021-01-01“…It provides the possibility for its emergency flight control when the aerodynamic control becomes inefficient at a low speed. …”
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363
Dynamic Analysis of Flexible Shaft and Elastic Disk Rotor System Based on the Effect of Alford Force
Published 2019-01-01“…The proportion of rotor responses caused by aerodynamic excitation force becomes larger with the increase of rotational speed and disk radius. …”
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364
Parametric Studies of Flat Plate Trajectories Using VIC and Penalization
Published 2018-01-01“…A VIC scheme is used to solve the flow equations. The aerodynamic forces and moments are used to compute the acceleration and the velocity of the solid. …”
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365
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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366
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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367
A Miniaturized High-Gain Flexible Antenna for UAV Applications
Published 2021-01-01“…As an important merit to be highlighted, the flexible cable can greatly reduce the volume and aerodynamic drag of the antenna. It has a low-profile compact size of 196 × 15 × 0.8 mm3 (excluding flexible cable). …”
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368
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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369
Monitoring air quality in residential areas with low-cost sensors: Santa Cecilia case
Published 2025-01-01“…This study evaluates the behaviour of particulate matter with an aerodynamic diameter below 2.5 micrometres (PM2.5) in indoor environments of the Santa Cecilia neighbourhood, relative to outdoor atmospheric concentrations, using custom-designed low-cost sensors. …”
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370
Investigation of the Pulsed Annular Gas Jet for Chemical Reactor Cleaning
Published 2012-01-01“…For the solving of the task of reactor internal walls cleaning the pulsed gaseous system was suggested and investigated, which throws circular oxygen jet along surfaces through regular intervals. Study of aerodynamic efficiency of the impulse system was carried by numerical modeling and experimentally with the help of a specially created experimental facility. …”
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371
Sliding Mode Disturbance Observer-Based Control of a Laboratory Twin Rotor Multi Input-Multi Output System
Published 2025-01-01“…The TRMS is a two rotational degree-of-freedom unstable structure with significant channel-coupling, nonlinear characteristics, and external disturbances, which resembles a real helicopter’s characteristics and can be used as an aerodynamic testing setup. The coupled nonlinear state-space representation of the developed TRMS is obtained, and model parameters are identified. …”
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372
Structural characteristic analysis of new type bend-twist coupling blades of large wind turbine
Published 2024-06-01“…The composite lamination design was carried out in accordance with the real processing technology, and the aerodynamic force of the blade was obtained by the computational fluid dynamics (CFD) method. …”
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373
Gust Mitigation of Micro Air Vehicles Using Passive Articulated Wings
Published 2014-01-01“…Birds and insects naturally use passive flexing of their wings to augment their stability in uncertain aerodynamic environments. In a similar manner, micro air vehicle designers have been investigating using wing articulation to take advantage of this phenomenon. …”
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374
Cracks path growth in turbine blades with TBC under thermo – mechanical cyclic loadings
Published 2015-12-01“…In high temperature one of the most often occuring interactions in the turbine engine are time variable force fields, caused by non-stationary flowing of an exhaust gas and aerodynamical interaction of the engine elements. The extremal thermo-mechanical loadings initiate gradual degradation process of the blades as a result of fatigue and material creep. …”
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375
Crosswise Wind Shear Represented as a Ramped Velocity Profile Impacting a Forward-Moving Aircraft
Published 2019-01-01“…While it would be difficult to model an instantaneous velocity gradient in a lateral plane, a vortical flow impinging from the sides which represents a wind shear in a vertical direction is imposed on a forward-moving aircraft to investigate the effect on the aerodynamic performance. The maximum shear wind speed from the side was fixed at 0.3 times the forward velocity. …”
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376
Influence of Turbulence, Orientation, and Site Configuration on the Response of Buildings to Extreme Wind
Published 2014-01-01“…The methodology presented can be followed to help decision makers to choose among innovative solutions like aerodynamic mitigation, structural member size adjustment, and/or damping enhancement, with an objective to improve the resiliency and the serviceability of buildings.…”
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377
Prediction of Lift Coefficient for Tandem Wing Configuration or Multiple-Lifting-Surface System Using Prandtl’s Lifting-Line Theory
Published 2018-01-01“…In tandem airfoil configuration or multiple-lifting-surface layouts, due to the flow interaction among their lifting surfaces, the aerodynamic characteristics can be affected by each other. …”
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378
Investigations on the Blade Vibration of a Radial Inflow Micro Gas Turbine Wheel
Published 2007-01-01“…Secondly, turbine blades suffer many excitations during operation, such as pressure fluctuations (unsteady aerodynamic forces), torque fluctuations, and so forth. …”
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379
Aeroservoelastic Pitch Control of Stall-Induced Flap/Lag Flutter of Wind Turbine Blade Section
Published 2015-01-01“…The aeroelastic governing equations combine a flap/lag structural model and an unsteady nonlinear aerodynamic model. The nonlinear resulting equations are linearized by small perturbation about the equilibrium point. …”
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380
Aeroelastic Stability Analysis of a Laminated Composite Sandwich Panel With a Magnetorheological Fluid Core Under Yawed Supersonic Airflow
Published 2024-01-01“…The aeroelastic equations for a rectangular sandwich panel (MRF core layer and composite cross-ply laminate constraining and host layers) were established using a MIN3 plate element. Aerodynamic forces for different yawed angles would result in different coupled flutter boundaries of the panel. …”
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