Numerical solutions of the linearized Euler equations for unsteady vortical flows around lifting airfoils [PDF]
A linearized unsteady aerodynamic analysis is presented for unsteady, subsonic vortical flows around lifting airfoils. The analysis fully accounts for the distortion effects of the nonuniform mean flow on the imposed vortical disturbances.
Atassi, Hafiz M., Scott, James R.
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Application of a nonisentropic full potential method to AGARD standard airfoils [PDF]
An entropy-correction method for the unsteady full potential equation is presented. The unsteady potential equation is modified to model the entropy jumps across shock waves.
Whitlow, Woodrow, Jr.
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STOL aircraft transient ground effects. Part 1: Fundamental analytical study [PDF]
The first phases of a fundamental analytical study of STOL ground effects were presented. Ground effects were studied in two dimensions to establish the importance of nonlinear effects, to examine transient aspects of ascent and descent near the ground ...
Crowder, J. P. +2 more
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Comparisons of several aerodynamic methods for application to dynamic loads analyses [PDF]
The results of a study are presented in which the applicability at subsonic speeds of several aerodynamic methods for predicting dynamic gust loads on aircraft, including active control systems, was examined and compared. These aerodynamic methods varied
Kroll, R. I., Miller, R. D.
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The effect of blade aerodynamic modelling on the prediction of high-frequency rotor airloads [PDF]
, 2009 Interactions between the blades and vortical structures within the wake of a helicopter rotor are a significant source of impulsive loading and noise, particularly in descending flight.
Brown, Richard, Kelly, Mary E.
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Unsteady transonic flow calculations for two-dimensional canard-wing configurations with aeroelastic applications [PDF]
Unsteady transonic flow calculations for aerodynamically interfering airfoil configurations are performed as a first step toward solving the three dimensional canard wing interaction problem.
Batina, J. T.
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Grasping extreme aerodynamics on a low-dimensional manifold. [PDF]
Nat Commun, 2023 Fukami K, Taira K.
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Some effects of tip fins on wing flutter characteristics [PDF]
A wind tunnel investigation has been conducted over the Mach number range from about 0.6 to 1.2 to determine the effects of large tip fins on the flutter characteristics of a swept wing.
Doggett, R. V., Jr., Goetz, R. C.
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Predicting wind turbine blade loads using vorticity transport and RANS methodologies [PDF]
, 2009 Two computational methods, one based on the solution of the vorticity transport equation, and a second based on the solution of the Reynolds-Averaged Navier-Stokes equations, have been used to simulate the aerodynamic performance of a horizontal axis ...
Brown, Richard +3 more
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User's Guide for a Modular Flutter Analysis Software System (Fast Version 1.0) [PDF]
The use and operation of a group of computer programs to perform a flutter analysis of a single planar wing are described. This system of programs is called FAST for Flutter Analysis System, and consists of five programs.
Bennett, R. M., Desmarais, R. N.
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