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221
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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222
Optimal Design and Acoustic Assessment of Low-Vibration Rotor Blades
Published 2016-01-01“…The process exploits an aeroelastic solver that is based on a nonlinear, beam-like model, suited for the analysis of arbitrary curved-elastic-axis blades, with the introduction of a surrogate wake inflow model for the analysis of sectional aerodynamic loads. Numerical results are presented to demonstrate the capability of the proposed approach to identify low vibratory hub loads rotor blades as well as to assess the robustness of solution at off-design operating conditions. …”
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223
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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224
A Sliding Mode Approach to Vector Field Path Following for a Fixed-Wing UAV
Published 2025-01-01“…This high-fidelity model considers the six-degrees-of-freedom (DoF) whole-flight dynamics of the UAV and it is based on experimental flight test data to implement the aerodynamic behavior.…”
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225
Film Effectiveness Downstream the Trenches with Tilted Target Wall
Published 2022-01-01“…Numerous film hole geometries have been the subject of investigation by many researchers over the past three decades with the aim of keeping the target wall under the maximum allowable temperature with the least amount of precious cooling air and minimum aerodynamic losses. In this study, we are proposing a new trench geometry that is fed by 30°-inclined embedded circular film holes entering from the trench sidewall. …”
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226
Targeting Drug Delivery to the Lungs by Inhalation
Published 1994-01-01“…To deliver therapeutic agents by inhalation to the lower respiratory tract, inhaled drug particles must have appropriate aerodynamic characteristics. In addition, the anatomy and pathophysiology of the patient's respiratory tract, mode of inhalation through the inhaler, and the characteristics of the inhalational device itself, may significantly affect drug deposition.…”
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227
Effect of Atmospheric Pollutants on the Air Quality in Tunisia
Published 2012-01-01“…This paper presents the evolution of Saharan dust advection when the PM10 (particles with an aerodynamic diameter below 10 μm) concentration exceeds standard limits in different Tunisian sites. …”
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228
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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229
The Effect of Rigging Angle on Longitudinal Direction Motion of Parafoil-Type Vehicle: Basic Stability Analysis and Wind Tunnel Test
Published 2020-01-01“…Above all, a parameter called Rigging Angle (RA) is sensitive to the aerodynamic characteristics of a paraglider during flight. …”
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230
Projection-Based Adaptive Backstepping Control of a Transport Aircraft for Heavyweight Airdrop
Published 2015-01-01“…The results show good performance and robust operation of the controller, and the airdrop mission performance indexes are satisfied, even in the presence of ±15% uncertainty in the aerodynamic coefficients, ±0.01 rad/s pitch rate disturbance, and 20% actuators faults.…”
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231
Impact Analysis of Different Trajectory Shapes on Optimization Based on Original Natural Algorithm
Published 2024-01-01“…The results showed that the basic state parameters of the spiral trajectory optimized using the improved original natural algorithm after adding constraints met the constraint conditions. The aerodynamic heating rate and overload of the spiral reentry trajectory were to some extent greater than those of the S-type trajectory. …”
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232
Liquid Self-Balancing Device Effects on Flexible Rotor Stability
Published 2013-01-01“…An analytical model is introduced to study the effects of the active fluid mass fraction on a flexible rotor supported by flexible supports excited by bwo different destabilizing mechanisms; rotor internal friction damping and aerodynamic cross-coupling. It is found that the fluid radial and traverse forces contribute to the balancing action and to improve the rotor stability, respectively.…”
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233
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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234
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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235
Flight Loads Prediction of High Aspect Ratio Wing Aircraft Using Multibody Dynamics
Published 2016-01-01“…Nonlinear effects come into play mainly because of the need of taking into account the large deflections of the wing for flight loads computation and of considering the aerodynamic forces as follower forces.…”
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236
Nonlinear Vibrations of FGM Cylindrical Panel with Simply Supported Edges in Air Flow
Published 2015-01-01“…A third-order piston theory is adopted to evaluate the hypersonic aerodynamic load. Here, Galerkin’s method is employed to discretize this continuous nonlinear dynamic system to ordinary differential governing equations involving two degrees of freedom. …”
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237
Mathematical Analysis of the Effect of Rotor Geometry on Cup Anemometer Response
Published 2014-01-01“…The comparison with the experimental data indicates a nonuniform distribution of aerodynamic forces on the rotating cups, with higher forces closer to the rotating axis. …”
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238
Direct Analysis of Low-Volatile Molecular Marker Extract from Airborne Particulate Matter Using Sensitivity Correction Method
Published 2016-01-01“…Analysis of size-segregated PM filter samples showed that their size distributions were found to be in the PM smaller than 0.4 μm aerodynamic diameter. The observations were consistent with our expectation of their possible sources. …”
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239
An Investigation on the Effect of Endwall Movement on the Tip Clearance Loss Using Annular Turbine Cascade
Published 2011-01-01“…The aerodynamic losses in gas turbines are mainly caused by profile loss secondary flow, and tip leakage loss. …”
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240
Association of ambient air pollutants with blood physiological and biochemical indicators and systemic immune inflammation index in people living around Beijing: an analysis of air...
Published 2024-11-01“…Particulate matter with an aerodynamic diameter of less than 10 μm (PM10) concentration was positively correlated with MO# and SIRI, and negatively correlated with mean corpuscular hemoglobin (MCH) and MCHC (all P < 0.01). …”
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