Main Physical Features of Plug Nozzle Flows

2002 ◽  
Author(s):  
Marcello Onofri
Keyword(s):  
Plug Nozzle ◽  
Physical Features ◽  
Nozzle Flows

Mach Disk In Truncated Plug Nozzle Flows

1976 ◽  
Vol 13 (4) ◽  
pp. 203-207 ◽  
Author(s):  
Thomas V. Giel ◽  
Thomas J. Mueller
Keyword(s):  
Mach Disk ◽  
Plug Nozzle ◽  
Nozzle Flows

Impingement Tones and Associated Shock Instabilities in Supersonic Plug Nozzle Flows

AIAA Journal ◽  
2016 ◽  
Vol 54 (9) ◽  
pp. 2843-2851 ◽  
Author(s):  
Andrew T. Powis ◽  
Ryan J. Brunet ◽  
Joshua P. Lynch ◽  
Damon R. Honnery ◽  
Julio Soria ◽  
...  
Keyword(s):  
Plug Nozzle ◽  
Nozzle Flows

A photoelectron microscope study of surfaces

1989 ◽  
Vol 47 ◽  
pp. 10-11
Author(s):  
W. Engel ◽  
M. Kordesch ◽  
A. M. Bradshaw ◽  
E. Zeitler
Keyword(s):  
Electron Microscopy ◽  
High Pressure ◽  
Field Strength ◽  
Uv Light ◽  
Physical Property ◽  
Photon Flux ◽  
Mercury Lamp ◽  
Object Surface ◽  
The Sixties ◽  
Physical Features

Photoelectron microscopy is as old as electron microscopy itself. Electrons liberated from the object surface by photons are utilized to form an image that is a map of the object's emissivity. This physical property is a function of many parameters, some depending on the physical features of the objects and others on the conditions of the instrument rendering the image.The electron-optical situation is tricky, since the lateral resolution increases with the electric field strength at the object's surface. This, in turn, leads to small distances between the electrodes, restricting the photon flux that should be high for the sake of resolution.The electron-optical development came to fruition in the sixties. Figure 1a shows a typical photoelectron image of a polycrystalline tantalum sample irradiated by the UV light of a high-pressure mercury lamp.

THE SOIL PATTERN AND TRENDS IN WEST COAST AGRICULTURE SINCE 1964

1981 ◽  
pp. 19-28 ◽  
Author(s):  
D.B. Wright
Keyword(s):  
West Coast ◽  
Land Development ◽  
Dairy Production ◽  
Waste Land ◽  
Development Costs ◽  
Coastal Soils ◽  
Physical Features ◽  
Soil Pattern ◽  
Great Scope

The physical features, climate and soils of the West Coast are described. Expansion since 1964 of dairy production, sheep and beef cattle numbers, and areas of improved grassland are highlighted, as is the role of the Crown in land development and settlement. While isolation and distance, development costs, river problems, and farmer attitude and knowledge are considered limitations, great scope exists for increased production by the adoption, of more intensive techniques, including horticulture on the best coastal soils, and by development of waste land.

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