Results 151 to 160 of about 36,102 (211)
Airfoil GAN: encoding and synthesizing airfoils for aerodynamic shape optimization
Journal of Computational Design and Engineering, 2023 Abstract The current design of aerodynamic shapes, like airfoils, involves computationally intensive simulations to explore the possible design space. Usually, such design relies on the prior definition of design parameters and places restrictions on synthesizing novel shapes.
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AIAA AVIATION 2023 Forum, 2023
This paper investigates the effect of airfoil thickness on the hydrodynamic near-field and radiated acoustic far-field of two cambered airfoils, namely the NACA 16-506 and NACA 16-616 profiles. Each airfoil has been experimentally investigated over a range of angles of attack encompassing the pre-stall, stall, and post-stall flow regimes, with static ...
John Branch +5 more
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This paper investigates the effect of airfoil thickness on the hydrodynamic near-field and radiated acoustic far-field of two cambered airfoils, namely the NACA 16-506 and NACA 16-616 profiles. Each airfoil has been experimentally investigated over a range of angles of attack encompassing the pre-stall, stall, and post-stall flow regimes, with static ...
John Branch +5 more
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Design of airfoils and cascades of airfoils
AIAA Journal, 1989This paper presents a method for generating blade shapes to be used as inputs to the direct- or inverse-bladedesign sequences. This method can generate subsonic or supersonic blades for compressors and turbines, or isolated airfoils, but the discussion in this paper is limited to subsonic-exit turbine blade rows. Gas-turbine blades are usually designed
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Numerical Solution of the Generalized Airfoil Equation for an Airfoil with a Flap
SIAM Journal on Numerical Analysis, 1997The authors consider the generalized airfoil equation which governs the pressure on an airfoil oscillating in a wind tunnel. In particular, an airfoil which contains a flap (or aileron) is examined, so that the profile function \(h\) has a simple jump in its first derivative at a point \(x_0\), \(-1 < x_0 < 1\). In this case the velocity function \(f\)
MONEGATO, Giovanni, I. H. SLOAN
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Aerodynamics and acoustics of transonic airfoil-airfoil interaction
3rd AIAA/CEAS Aeroacoustics Conference, 1997As a two dimensional approximation to the outer region of a coaxial rotor, the How Gelds induced by transonic airfoil-airfoil interaction (AAI) are numerically simulated to investigate the aerodynamic and acoustic characteristics. A new approach is suggested to minimize the numerical compression wave generated when imposing initial condition for ...
Kwanjung Yee +5 more
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Icing Research for Airfoil and Multi-Element Airfoil
24th AIAA Applied Aerodynamics Conference, 2006*† ‡ Ice accretions over critical aerodynamics surface cause significant degradation in aircraft performance and handling qualities. In this paper, ice accretion on the leading edge of the NACA 0012 airfoil is predicted using CFD method. A four -order Runge -Kutta method is used to solve the droplet trajectory equation.
Weimin Sang, Shengju Jiang, Fengwei Li
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A Collocation Method for the Generalized Airfoil Equation for an Airfoil with a Flap
SIAM Journal on Numerical Analysis, 1998The author considers the generalized airfoil equation \(\frac{1}{\pi}\oint_{-1}^1\frac{u(x)}{x-y}dx+\frac{1}{\pi}\int_{-1}^1k(y, x)u(x)dx=f(y)\), \(-1 < y < 1\), which governs the pressure across an airfoil oscillating in a wind tunnel; \(\oint\) denotes an integral defined in the Cauchy principal value sense, and \(u(x)\) is the unknown pressure jump ...
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Airfoils and Airfoil Systems of Finite Span
1935The subject of this Chapter is the investigation of the forces experienced by an airfoil of finite span and by airfoil systems. The basic idea for the following deductions has been indicated at the end of III 32. The only point we have to add is that in the case of a single wing of ordinary type we may substitute the lift per unit span l for Λ (see III
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A multipoint inverse airfoil design method for slot-suction airfoils
13th Applied Aerodynamics Conference, 1995Owing to a renewed interest in advanced-concept transport aircraft with active boundary-layer control (suction and/or blowing), a generalized multipoint method for the inverse design of airfoils with slot suction in incompressible potential flow is presented. The results predicted by theory show good agreement with experiment.
Farooq Saeed, Michael S. Selig
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Cylinder-Airfoil Interactions and the Effect on Airfoil Performance
2021From micro air vehicles flying in the wake of buildings to aircraft operating in ship airwakes, turbulent flows generate unsteady aerodynamic loads on airfoils that may promote structural failure, loss of flight control, and produce noise radiation. In order to develop engineering solutions capable of mitigating these effects, accurate force prediction
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