Special Course On Cryogenic Technology For Wind Tunnel Testing

Author : M. J. Goodyear
Publisher :
ISBN 13 :
Total Pages : 395 pages
Book Rating : 4.:/5 (227 download)

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Download or read book Special Course on Cryogenic Technology for Wind Tunnel Testing written by M. J. Goodyear and published by . This book was released on 1985 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advantages of the cryogenic tunnel for aeronautical research lie mainly in the practical attainment of full-scale values of Reynolds numbers and in the case of pressurized cryogenic tunnels, the means to separate Mach number and Reynolds number effects from aeroelastic effects. There has been a subtle shift in interest away from some of the major concerns of 1980, e.g. real-gas effects, toward concerns more directly related to the application of cryogenic tunnels. The content of this present series of lectures has been selected to reflect this shift in interest. It has been demonstrated that large cryogenic tunnels can be built and sucessfully operated. We now ask, is it possible to build models for cryogenic tunnels, test them, and get data of sufficient accuracy so that the advantages of testing at full-scale values of Reynolds number are realized? This document addresses this question. It is specifically designed for those who wish to acquire in concentrated form the most up-to-date information on the principles and practices of cryogenic wind tunnel design, operation, and application. Following a brief review of the development and early application of cryogenic wind tunnels, all of the aspects of cryogenic wind tunnel technology related to the design and operation of cryogenic tunnels are examined. Among the areas covered are: cryogenic engineering and safety, properties of materials at cryogenic temperatures, model design requirements and fabrication techniques, instrumentation for control and data acquisition, data accuracy, productivity, and costs of models and operation.