Results 91 to 100 of about 87,747 (212)

A system for aerodynamic design and analysis of supersonic aircraft. Part 1: General description and theoretical development [PDF]

open access: yes
An integrated system of computer programs was developed for the design and analysis of supersonic configurations. The system uses linearized theory methods for the calculation of surface pressures and supersonic area rule concepts in combination with ...
Lundry, J. L., Middleton, W. D.
core   +1 more source

A Time-Domain Calculation Method for Gust Aerodynamics in Flight Simulation

open access: yesAerospace
Gusts have a significant impact on aircraft and need to be analyzed through flight simulations. The solution for time-domain gust aerodynamic forces stands as a pivotal stage in this process. With the increasing demand for flight simulations within gusty
Zexuan Yang   +4 more
doaj   +1 more source

Transonic blunt body aerodynamic coefficients computation

open access: yes, 2011
In the framework of EXPERT (European Experimental Re-entry Test-bed) accurate transonic aerodynamic coefficients are of paramount importance for the correct trajectory assessment and parachute deployment. A combined CFD (Computational Fluid Dynamics) modelling and experimental campaign strategy was selected to obtain accurate coefficients.
Sancho Ponce, Jorge   +3 more
openaire   +1 more source

Simulation of self-induced unsteady motion in the near wake of a Joukowski airfoil [PDF]

open access: yes
The unsteady Navier-Stokes analysis is shown to be capable of analyzing the massively separated, persistently unsteady flow in the post-stall regime of a Joukowski airfoil for an angle of attack as high as 53 degrees.
Ghia, K. N., Ghia, U., Osswald, G. A.
core   +1 more source

The effectiveness of vane-aileron excitation in the experimental determination of flutter speed by parameter identification [PDF]

open access: yes
The effectiveness of aerodynamic excitation is evaluated analytically in conjunction with the experimental determination of flutter dynamic pressure by parameter identification.
Nissim, Eli
core   +1 more source

Nonlinear aerodynamic global model indentification using Gram-Schmidt orthogonalisation13; [PDF]

open access: yes, 2005
This paper discusses a simple technique to identify global models for nonlinear aerodynamic force and moment coefficients of aircraft using multivariate orthogonal functions. Classical Gram-Schmidt procedure and Predicted Squared Error metric are used to
Ismail, Shaik, Singh, Jatinder
core  

Calculation of static longitudinal aerodynamic characteristics of STOL aircraft with upper surface blown flaps [PDF]

open access: yes
An existing prediction method developed for EBF aircraft configurations was applied to USB configurations to determine its potential utility in predicting USB aerodynamic characteristics. An existing wing-flap vortex-lattice computer program was modified
Goodwin, F. K.   +3 more
core   +1 more source

Evaluation of Prediction Performances of Deep Learning Models for the Aerodynamic Characteristics of Flettner Rotors

open access: yesPolish Maritime Research
This study investigates the prediction of the aerodynamic characteristics of Flettner rotors through three deep learning models. Various numbers of Flettner rotors, arrangements, and spin ratios are employed to consider these effects in the dataset.
Seo Janghoon   +4 more
doaj   +1 more source

Space shuttle plume simulation application. Results and math model [PDF]

open access: yes
Pressure and gauge wind tunnel data from a transonic test of a 0.02 scale model of the space shuttle launch vehicle was analyzed to define the aerodynamic influence of the main propulsion system and solid rocket booster plumes during the transonic ...
Boyle, W., Conine, B.
core   +1 more source

State-space model identification and feedback control of unsteady aerodynamic forces

open access: yes, 2014
Unsteady aerodynamic models are necessary to accurately simulate forces and develop feedback controllers for wings in agile motion; however, these models are often high dimensional or incompatible with modern control techniques.
Brunton, Steven L.   +2 more
core   +1 more source

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