Results 21 to 30 of about 39,978 (316)
Influence of wing kinematics on aerodynamic performance in hovering insect flight
, 2007 The influence of different wing kinematic models on the aerodynamic performance of a hovering insect is investigated by means of two-dimensional time-dependent Navier–Stokes simulations.
Bijl, H. +8 more
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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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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
doaj +1 more source
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
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Aerodynamic Performances of Paper Planes
Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 2020 Paper plane has a high potential to be upgraded as a Micro Air Vehicle (MAV). Due to its simplicity, paper plane offers easier design option compared to the biological inspired designs as shown in recent MAV development. However, researchers have underestimate and overlook the basic aerodynamic performance induced by these paper planes.
Ismail, Noor Iswadi +4 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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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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Surrogate Approaches for Aerodynamic Section Performance Modeling [PDF]
AIAA Journal, 2020 The use of surrogate models (response surface models, curve fits) of various types (radial basis functions, Gaussian process models, neural networks, support vector machines, etc.) is now an accept...
Keane, Andrew, Voutchkov, Ivan
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background An internal tandem duplication in the gene encoding Fms‐like tyrosine kinase 3 (FLT3‐ITD) is associated with high relapse risk and poor prognosis in acute myeloid leukemia (AML) and plays a crucial role in treatment decisions. Measurable residual disease (MRD) analysis of FLT3‐ITD during and after treatment has shown prognostic ...
Sofie Johansson Alm +11 more
wiley +1 more source