Aerodynamic efficiency of a bioinspired flapping wing rotor at low Reynolds number [PDF]
Royal Society Open Science, 2018 This study investigates the aerodynamic efficiency of a bioinspired flapping wing rotor kinematics which combines an active vertical flapping motion and a passive horizontal rotation induced by aerodynamic thrust.
H. Li, S. Guo
doaj +5 more sources
Solar UAVs—More Aerodynamic Efficiency or More Electrical Power?
Energies, 2023 Solar UAVs (unmanned aerial vehicles) have experienced important development in recent years. The use of solar free energy is not neglected in the present energy crisis, with the intention to move toward green energies.
Liviu Dinca +2 more
doaj +4 more sources
Numerical investigation on the aerodynamic efficiency of bio-inspired corrugated and cambered airfoils in ground effect. [PDF]
Sci Rep, 2022 This research numerically investigates the flapping motion effect on the flow around two subsonic airfoils near a ground wall. Thus far, the aerodynamic efficiency of the dragonfly-inspired flapping airfoil has not been challenged by an asymmetric ...
Abdizadeh GR +2 more
europepmc +2 more sources
Nature’s Wind Turbines: The Measured Aerodynamic Efficiency of Spinning Seeds Approaches Theoretical Limits [PDF]
Biomimetics, 2022 This paper describe a procedure to measure experimentally the power coefficient, Cp, of winged seeds, and apply this technique to seeds from the Norway maple (Acer platanoides). We measure Cp=56.9±2% at a tip speed ratio of 3.21±0.06.
Timothy C. A. Molteno
doaj +2 more sources
Aerodynamic efficiency enhancement for asymmetric profiles [PDF]
MATEC Web of Conferences, 2018 This paper presents a solution for enhancement of aerodynamic efficiency for asymmetric airfoils. In order to increase the lift and reduce the drag forces for a blade segment, a groove was created on its surface.
Bostan Viorel +2 more
doaj +3 more sources
Three-dimensional wing structure attenuates aerodynamic efficiency in flapping fly wings. [PDF]
J R Soc Interface, 2020 The aerial performance of flying insects ultimately depends on how flapping wings interact with the surrounding air. It has previously been suggested that the wing's three-dimensional camber and corrugation help to stiffen the wing against aerodynamic ...
Engels T, Wehmann HN, Lehmann FO.
europepmc +2 more sources
Energy Science & EngineeringThe increasing demand for energy in daily life and the finite nature of fossil fuel reserves have driven researchers worldwide to explore renewable energy sources such as wind energy.
Reza Abbaspour +2 more
doaj +2 more sources
EnergiesAmid rising global demand for sustainable energy, wind energy emerges as a crucial renewable resource, with the aerodynamic optimization of wind turbine blades playing a key role in enhancing energy efficiency.
Ali Akbar Firoozi +2 more
exaly +2 more sources
Numerical and Experimental Study of a Wing Combined with Wing Grids in Low Reynolds Number Flows [PDF]
مهندسی مکانیک شریف, 2022 One of the reasons for the increase in induced drag is the vortices created at the wing tip, which has a significant effect on reducing aerodynamic efficiency.
M. sadeghi Malekabadi, A. Banazadeh
doaj +1 more source
Analyzing Porpoising on High Downforce Race Cars: Causes and Possible Setup Adjustments to Avoid It
Energies, 2022 The so-called porpoising is a well-known problem similar to bouncing that is affecting the dynamic behavior of basically all the field of 2022 Formula 1 racing cars.
Marco Gadola +3 more
doaj +1 more source