16,892 research outputs found
Review of some vortex relations
The evaluation of the circulation from numerical solutions of the momentum and energy equations is discussed for incompressible and compressible flows. It is shown how artificial damping directly influences the time ratio of change of the circulation
Airphoto use in resource management - A survey of non-federal purchasers of agricultural stabilization and conservation service airphotos
Survey and analysis of nonfederal users of spacecraft aerial photographs sold by US Department of Agricultur
Miniature probes for use in gas turbine testing
Several examples of miniature probes (null type as well as fixed position) are presented which have proved useful in aircraft and space power systems component testing and are applicable to automotive gas turbine testing. These probes are used to determine component or system performance from the measurement of gas temperature as well as total and static pressure, and flow direction. Detailed drawings of the sensors are presented along with experimental data covering the flow characteristics over the range of intended use
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