Results 21 to 30 of about 16,262 (267)
Aerospace, 2023 To study the influence of the tilt-back design of a vertical tail on its aerodynamic stealth characteristics, an optimization method based on a quantitative weight coefficient and a two-particle search algorithm is presented.
Zeyang Zhou, Jun Huang
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Energies, 2020 For a wind turbine to extract as much energy as possible from the wind, blade geometry optimization to maximize the aerodynamic performance is important.
Kyoungboo Yang
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Numerical Study of the Aerodynamic Effect of Ski Suit Surface Roughness on Ski Jumping Athletes During the Flight Phase [PDF]
Journal of Applied Fluid MechanicsSurface roughness of ski suits can have a significant effect on the aerodynamic performance of ski jumping athletes. Herein, several typical surface roughness configurations are examined through numerical simulations.
K. Liu, Z. Wang, Q. Liu
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Effect of Geometric Scaling on Aerodynamic Performance
AIAA Journal, 2005 Miniaturization of modern electronics and simultaneous elevation in heat dissipation means that future compact electronic systems are likely to be too hot to be held in the users hand. As a result, novel compact cooling technologies are required. In systems such as mobile phones and palmtop computers, macroscale fans cannot be used to overcome this ...
Grimes, R, Walsh, E, Quin, D, Davies, M
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Aerodynamic Performance of the Flapping Wing [PDF]
, 2012 Flapping is described as simultaneous heave and pitch oscillations of a wing. The dominant way for producing lifting and propulsive force in natural flight is flapping (Pennycuick, 2008; Shyy et al., 1999). Unlike the most common aerial vehicles, in flapping flight, both lift and thrust forces are produced simultaneously by flapping wings.
Abbas Ebrahimi, Karim Mazaheri
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Research on the Aerodynamic Performance of an Airfoil
Journal of Physics: Conference Series, 2023 Abstract Airfoils provide lift force for planes and keep planes flying in the atmosphere. Different airfoils have distinct performance characteristics based on their shapes, influencing the flying condition of planes and people’s safety. Therefore, an airfoil’s shape must be carefully studied and deliberated on because it’s an engineer’s
Haotian Chen, Yijun Liu, Yunuo Zhang
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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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Shock and Vibration, 2021 Analyzing the propeller aerodynamic performance is of vital importance for research and improvement of unmanned aerial vehicles. This paper presents the design requirements for a propeller for rotorcraft unmanned aerial vehicles and an analysis of a ...
Hang Zhu +5 more
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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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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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