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Critical Speeds of a Wind Tunnel Fan Shaft

Published online by Cambridge University Press:  28 July 2016

J. Morris
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Extract

In the design of a fan drive regard should be had to possible critical or resonant speeds which may result in failure of the system. It is not sufficient to arrange for the ordinary whirling speed to be well above the maximum running speed. In whirling the forced vibration arises from static or dynamic unbalance of fan and/or its shaft and the frequency of the forced vibration is the frequency of revolution of the fan shaft. Other important forced vibrations may however be set up.

Type
Research Article
Information
The Aeronautical Journal , Volume 40 , Issue 308 , August 1936 , pp. 557 - 560
Copyright
Copyright © Royal Aeronautical Society 1936

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References

Note on page 558 * See “Strength of Shafts in Vibration” by J. Morris (Crosby Lockwood), § 147.

Note on page 559 * See “Strength of Shafts in Vibration” by J. Morris (Crosby Lockwood), § 145.