Results 161 to 170 of about 87,747 (212)

Further Developments in Consistent Unsteady Supersonic Aerodynamic Coefficients

Journal of Aircraft, 1971
A finite element method to evaluate unsteady supersonic aerodynamic coefficients consistent with structural stiffness and inertia properties of a lifting surface is described. The grid and element system on the wing surface can be the same as in the structural analysis.
null KARIAPP, G. SMITH
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Estimation of aerodynamic coefficients using neural networks

Flight Simulation and Technologies, 1993
Estal~lisllment and 1naintena1lc.e of aerodynaillic data base is fuiidall~cntal to every aircraft program. In this paper. neural iittworl; tcchilologies are used to pro\side a u n i ~ ~ r sal data hase for the storage and processil~g of aerodynamic data. In particular.
HUSSEIN YOUSSEF, JYH-CHING JUANG
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Aerodynamic Influence Coefficients from Strip Theory

Journal of the Aerospace Sciences, 1959
T N ANY AEROELASTIC ANALYSIS by collocation methods, both structural and aerodynamic influence coefficients must be known. We consider here the derivation of the aerodynamic influence coefficients (AICs) from the simplest of the aerodynamic theories—that of strip theory in which the flow along any section of the wing can be considered as two ...
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Extracting Aerodynamic Coefficients using Direct Trajectory Sampling

AIAA Atmospheric Flight Mechanics Conference and Exhibit, 2008
We describe a technique to extract aerodynamic characteristics of an aircraft directly from collected trajectories. The technique was developed to investigate the low Reynold’s number regime of centimeter-scale aircraft which represents a largely unstudied domain of aerodynamics and for which traditional techniques have produced limited results.
Matthew Rhinehart, Bernard Mettler
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Aerodynamic Coefficients and Risk‐consistent Design

Journal of Structural Engineering, 1983
A simple procedure is presented for estimating the reliability of windsensitive structures whose orientation is not specified. The procedure is based on a second moment reliability approach and makes use of: (1) Aerodynamic coefficients obtained experimentally as functions of wind direction, and (2) climatological data consisting of sets of largest ...
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Artificial Dissipation Coefficients in Regularized Equations of Supersonic Aerodynamics

Doklady Mathematics, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Elizarova, T. G., Shirokov, I. A.
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System identification technology for estimating reentry vehicle aerodynamic coefficients

1977 IEEE Conference on Decision and Control including the 16th Symposium on Adaptive Processes and A Special Symposium on Fuzzy Set Theory and Applications, 1977
This paper describes the development and application of a system identification technology to obtain accurate estimates of maneuvering reentry vehicle aerodynamic coefficients from flight data. The impact of the specific maneuvering reentry vehicle characteristics on system identification is described and appropriate solutions are proposed.
Narendra K. Gupta, W. Earl Hall
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Some General Properties of Aerodynamic Coefficients

1967
In the linearized problem, the dependence of the basic aerodynamic characteristics on the dimensionless kinematic parameters (1.19) is linear. The only exception is the induced drag, which is a small quantity of the second order, and for which this dependence is quadratic.
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Identification of aerodynamic coefficients using computational neural networks

Journal of Guidance, Control, and Dynamics, 1992
Precise, smooth aerodynamic models are required for implementing adaptive, nonlinear control strategies. Accurate representations of aerodynamic coefficients can be generated for the complete flight envelope by combining computational neural network models with an Estimation-Before-Modeling paradigm for on-line training information.
Linse, Dennis J., Stengel, Robert F.
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Underbody aerodynamics: Drag coefficient reduction in road vehicles

SAE Technical Paper Series, 2018
<div class="section abstract"><div class="htmlview paragraph">In the last decades it has been constantly debated about the behaviour of the human being towards a better usage of the natural resources through a restructuring of unsustainable processes.
R. Heidemann Jr, A. F. A. Rodrigues, A. Bohrer, C. L. Gertz, A. Cervieri   +4 more
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