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Some Aspects of Transonic Tunnel Operation in Industry

Published online by Cambridge University Press:  04 July 2016

F. E. Roe
F. E. Roe*
Affiliation:
English Electric Co. Ltd.
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Extract

Early in 1950 it was decided to modify experimentally the original jet–driven tunnel of the English Electric Company—Aircraft Division, from a subsonic to a transonic tunnel. This was inspired by the work of Ward and Wright at Langley Field. As little was known then of the pressure ratio to operate a transonic working section, the working section area was reduced from a 3 8 square foot subsonic section which could be choked, to one square foot. The working section and diffuser for this modification were quickly manufactured from wood. In addition to the new working section and diffuser, a steel fairing was added to reduce the cross sectional area of the mixing length and so match the smaller induced mass flow.

Type
Transonic Wind Tunnel Testing Techniques
Information
The Aeronautical Journal , Volume 62 , Issue 565 , January 1958 , pp. 16 - 20
Copyright
Copyright © Royal Aeronautical Society 1958

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References

1.Wright, R. H. and Ward, V. G. N.A.C.A. Transonic Wind Tunnel Sections. N.A.C.A. Report 1231.Google Scholar
2.Moeckel, W. E. Approximate method for predicting the form and location of detached shock waves ahead of plane or axially symmetric bodies. N.A.C.A. T.N. 1921.Google Scholar