Results 31 to 40 of about 149,179 (315)
MachinesIn nuclear-powered steam turbines, the aerodynamic performance of the inlet chamber tends to be contradictory to the compact design, which makes it difficult to achieve optimal efficiency and power in a nuclear-powered steam turbine.
Lei Zhang +3 more
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Unsteady loads for coaxial rotors in forward flight computed using a vortex particle method [PDF]
, 2018 Recent advances in coaxial rotor design have shown benefits of this configuration. Nevertheless, issues related to rotor-head drag, aerodynamic performance, wake interference, and vibration should also be considered.
Barakos, George +2 more
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DronesThe integrated ducted structure significantly enhances the aerodynamic performance of the duct–rotor system, reducing noise and enhancing rotor safety. However, in the duct–rotor system, the coupled parameters of the rotor and the duct are crucial to its
Wei Wei +8 more
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Estimation of Airship Aerodynamic Forces and Torques Using Extended Kalman Filter
IEEE Access, 2020 An airship is a lighter than air, aerial vehicle whose model is based on dynamic, aerodynamic, aerostatic and propulsion forces and torques. Apart from other, aerodynamic forces and toques are difficult to measure.
Muhammad Wasim, Ahsan Ali
doaj +1 more source
Aerodynamic performance of scarf inlets [PDF]
17th Aerospace Sciences Meeting, 1979 A scarf inlet is characterized by having a longer lower lip than upper lip leading to both aerodynamic and acoustic advantages. Aerodynamically, a scarf inlet has higher angle of attack capability and is less likely to ingest foreign objects while the aircraft is on the ground.
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Effect of blade geometry on the aerodynamic loads produced by vertical-axis wind turbines [PDF]
, 2010 Accurate aerodynamic modelling of vertical-axis wind turbines poses a significant challenge. The rotation of the turbine induces large variations in the angle of attack of its blades that can manifest as dynamic stall.
ETI +5 more
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A computational assessment of the aerodynamic performance of a tilted Darrieus wind turbine [PDF]
, 2015 The aerodynamic performance of a Darrieus wind turbine operating with the rotation axis tilted with respect to the free-stream wind speed is investigated in this paper. An Unsteady Reynolds Averaged Navier Stokes (URANS) Computational Fluid Dynamics (CFD)
Bedon, Gabriele +2 more
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Airfoil Robust Optimization Based on Convolutional Neural Network and Polynomial Chaos Method
Hangkong gongcheng jinzhan, 2021 In conventional airfoil optimization design method, the aerodynamic performance of the optimal airfoil can deteriorate at the non-design point, so it is necessary to study the airfoil robust optimization method.An airfoil robustness design method based ...
GAO Yuan +4 more
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Turbine design review text [PDF]
, 1975 Three-volume publication covers theoretical, design, and performance aspects of turbines. Volumes cover thermodynamic and fluid-dynamic concepts, velocity diagram design, turbine blade aerodynamic design, turbine energy losses, supersonic turbines ...
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Aerodynamic Performance of Two eVTOL Concepts [PDF]
, 2019 Today’s demand for urban mobility is constantly growing due to the demographic changes observed in metropolitan areas. New concepts such as electrical vertical take-off and landing (eVTOL) vehicles are currently emerging. Therefore an aerodynamic investigation of two eVTOL vehicle concepts is carried out to identify the advantages and disadvantages of ...
openaire +3 more sources