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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
611

Numerical study of plane couette flow in a rotating framework

Wilson, Matthew Bernard 05 1900 (has links)
No description available.
612

Cushion drag of air cushion vehicles.

Seebohm, Thomas January 1967 (has links)
No description available.
613

Motion of an aircraft bomb in the attenuated atmosphere

Cunningham, L. B. C. January 1930 (has links)
This paper is now in two parts. In the first part a new exact solution of the plane flight of a particle is discussed, by which it is possible to take a very long first arc straight from tables of functions defined in the solution. Fairly extensive tables of these functions have been computed (42 sets of each function:- a total of 1,900 entries). Having devised a method of computation, the writer employed another to do this work, and accordingly omits them from this edition, every part of which, to the best of his belief, is original and unaided. A series solution for the lower arcs is also discussed in Part I. In Part II, solutions in finite terms of the vertical fall of a particle, an approximate solution of the plane flight, and of the effect of changing winds are given.
614

A study of moderately underexpanded single and twinjet rocket exhaust plumes in quiescent and in a mach 7 hypersonic freestream

Shek, H. H-W. January 1997 (has links)
Rocket plume flowfields have an importance due to their influence on the signature of the rocket and also on the distribution of the plume gases around the vehicle. Little information on the co-flowing situation exists other than a previous study at Oxford. This thesis thus represents a significant database for co-flowing rocket plumes of this form. The work presented deals with two new aspects of co- flowing rocket plumes in that detailed flowfield measurements have been made and plumes from twin nozzle have been investigated for the first time in this thesis. This study on twinjet rocket plumes was carried out using the University of Oxford Gun Tunnel. Twinjet rockets with nozzle exit Mach numbers of 3 and 5 were tested in quiescent and in co-flow at Mach 7 using nitrogen and hydrogen injections. A major feature of the twinjet case was the so-called impingement shock between the flows from the two nozzles. It was discovered that this shock was insensitive to the freestream and scaling parameters are suggested for its geometry. Comparisons with single equivalent thrust nozzles are made at downstream locations and similar Pitot pressure profiles were observed for nitrogen injection in a nitrogen freestream after approximately 3 nozzle diameters downstream. Shear layers were studied and fluctuations in this region were measured by fast-response Pitot pressure and heat transfer probes sampled at 1.1 MHz. The extent of the shear layer was deduced using a new Oxford Total Temperature Probe. With the freestream stagnation temperature at approximately 650 K and injected gas at 350 K, a linear variation for the deduced total temperature across the shear layer was obtained. This was consistent with the Pitot pressure variations across this region. Convective heat transfer coefficient fluctuations and flow total temperature fluctuations across rocket flowiields were obtained using three thin-film heat transfer probes and found to be closely correlated. Experimental results for the twinjet and the single jet were compared with CFD simulations and good overall agreements were achieved. Instrumentation for the hypersonic experiments was investigated and a fast-response (~ 20 kHz) Pitot probe suited for flows heavily contaminated with particulate was developed and tested.
615

Hyshot scramjet experiments in the T4 shock tunnel

Frost, M. A. Unknown Date (has links)
No description available.
616

Airplane dynamic modeling and automatic flight control design /

Wolfe, Douglas E., January 1990 (has links)
Project report (M.S.)--Virginia Polytechnic Institute and State University, 1990. / Vita. Abstract. Includes bibliographical references (leaf 59). Also available via the Internet.
617

The prediction of unsteady three-dimensional aerodynamics on wind turbine blades

Munduate, Xabier. January 2002 (has links)
Thesis (Ph.D.) -- University of Glasgow, 2002. / Ph.D. thesis submitted to the Faculty of Engineering, Department of Aerospace Engineering, University of Glasgow, 2002. Includes bibliographical references. Print version also available.
618

Aspirating probes for measurement of mean concentration and fluctuating quantities in supersonic air/helium shear layer /

Ninnemann, Todd A., January 1990 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1990. / Vita. Abstract. Includes bibliographical references (leaves 61-62). Also available via the Internet.
619

Design and prototyping of a mechatronic system as a drag reduction device for busses./

Kavadar, Gökhan. Keçeci, Emin Faruk January 2006 (has links) (PDF)
Thesis (Master)--İzmir Institute of Technology, İzmir, 2006 / Keywords: Drag coefficient, Mechatronics systems. Includes bibliographical references (leaves 90-91).
620

Fan noise reduction from a supersonic inlet /

Nuckolls, William E., January 1992 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references (leaves 66-67). Also available via the Internet.

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