Results 261 to 270 of about 443,866 (305)

Parachute Suspension Line Drag Analysis

20th AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, 2009
A team of researchers experimentally investigated the drag of several components of parachute suspension systems commonly used for personnel and cargo airdrops. Specifically, the team determined drag coefficients for Type III nylon cord, 1000 lb spectra, and Type VII nylon webbing between Re = 400 to Re = 7,000, and tensions varying between 10 lbs and ...
Keith Bergeron, Dan Ecklebe, Kyle McClure, Hamid Johari, T. Curlett, B. Pitman   +5 more
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Drag Analysis of Civil Aeroplanes

Aircraft Engineering and Aerospace Technology, 1936
THE increasing speed of modern aircraft has brought to the forefront the necessity for making a careful drag analysis of all aircraft in order to separate out the essential drag, that is to say the drag that is unavoidable, from the non‐essential drag.
J.H. Crowe, W.E. Wood
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Drag Analysis Methods for Light Aircraft

SAE Technical Paper Series, 1975
<div class="htmlview paragraph">The bases for computer programs which calculate by rigorous analytical methods the lift and drag of light aircraft are indicated along with results obtained for airfoils, complete wings, and fuselages. A method to determine the actual lift, drag, and thrust horsepower experienced during flight is discussed in ...
Frederick O. Smetana, Delbert C. Summey
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Theoretical analysis of ion-drag pumping

Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting, 1995
An improved one-dimensional theoretical model for ion-drag pumping is developed. All three components of the current density are considered, and the distributions of the charge density and electrical field under various conditions are provided. The solutions presented are in nondimensional form, while the combined effects of the controlling fluid ...
J. Seyed-Yagoobi, J.E. Bryan, J.A. Castaneda   +2 more
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Drag/thrust analysis of jet-propelled transonic transport aircraft; Definition of physical drag components

Aerospace Science and Technology, 2004
Summary: Drag/thrust analysis of jet-propelled transonic transport aircraft on the basis of calculated viscous flow is discussed. Unique definitions for viscous drag plus wave drag and for induced drag are established. The concept of additive throughflow drag is introduced. Drag/thrust bookkeeping is given attention.
Destarac, D., van der Vooren, J.
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Drillstring Analysis With a Discrete Torque/Drag Model

SPE Drilling & Completion, 2013
Summary The only standard drillstring model in use today is the torque/drag model because of its simplicity and general availability. Field experience indicates that this model generally gives good results but sometimes performs poorly.
Robert F. Mitchell, Arve Bjørset, Gaute Grindhaug   +2 more
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Features and Drag Reduction Analysis of Drag in Hypersonic Inlet

2020
In recent years, with the in-depth research of hypersonic vehicle and scramjet, the increase of thrust and reduction of drag of the propulsion system has gradually become the consensus of people. Since hypersonic inlet is the main drag component of the whole propulsion system, it has become the focus of attention how to reduce the drag of inlet as much
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Experimental analysis on drag coefficient reduction techniques

2016 4th International Symposium on Environmental Friendly Energies and Applications (EFEA), 2016
Drag reduction geometries is one of the burning issues in the present aerodynamics on which vast range of work is going on. Generally drag is the force exerted by the medium on the vehicles in the direction linear to the motion of the medium. Many of the researchers have developed some techniques like spike attachment to the front nose of the body ...
Jagadeshwar Kandula, G Santhosh Kumar, B Bhasker   +2 more
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On Suspension Bridge Flutter Analysis Including Drag Force Effects

IABSE Reports, 2020
<p>The present contribution presents the results of flutter analyses conducted on a finite element model of the Akashi Kaikyo Bridge according to the following descriptions of wind action: unsteady lift and moment plus</p><p>(a) unsteady drag, (b) steady drag, (c) no drag. The finite element results are compared with those obtained by
Gianfranco Piana, Alberto Carpinteri
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Control Characteristics Analysis of Split-Drag-Rudder

Applied Mechanics and Materials, 2014
Flying wing configuration is a promising candidate for various kinds of unmanned aerial vehicles. However, this kind of configuration eliminates conventional vertical tail and rudder, thus existing severe problems on yawing control. To make the flying wing configuration into practical use, it is especially necessary to gain a deep understanding on the ...
Zhong Jian Li, Dong Li Ma
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