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Wind Tunnel Balance Design— The Simultaneous Measurement of Forces and Moments

Published online by Cambridge University Press:  28 July 2016

C. G. Saunders*
Affiliation:
Blackburn and General Aircraft Co. Ltd.

Extract

An electro-mechanical method of simultaneous component separation is suggested as an alternative to mechanical systems. Based on the commonly used weighbeam, employing a motor driven leadscrew, poise weight, selsyn repeater circuit and counter, component separation is proposed by means of the selsyn differential circuit.

The use of the selsyn motor as a direct or differential telemeter mechanism is well known, and as such, has many industrial applications. Such use, applied to the aerodynamic balance, offers the advantage of avoiding many of the difficulties associated with design and in particular, the construction of a mechanically independent and simultaneous measuring instrument.

Type
Technical Notes
Copyright
Copyright © Royal Aeronautical Society 1954

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References

1. Molloy, , Say, , Walker, and Windred, (1946). Selsyn Motors, Section 8, pp. 6364, Electrical Engineering Reference Hand-book (2nd Edition 1946).Google Scholar
2. Leavy, L. E. and Saunders, C. G. (1953). A Modern Wind Tunnel Balance. Journal Royal Aeronautical Societ., August 1953.CrossRefGoogle Scholar
3. Alan, Pope (1947). Wind Tunnel Testing. John Wiley (1947). Model force, moment and pressure measurements, chapter 4.Google Scholar