Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-25T06:55:09.585Z Has data issue: false hasContentIssue false
  • English
  • Français

A Theoretical Treatment of the Flutter of a Wing with a Localised Mass

Published online by Cambridge University Press:  04 July 2016

D. R. Gaukroger
D. R. Gaukroger*
Affiliation:
Royal Aircraft Establishment, Farnborough
Get access Rights & Permissions [Opens in a new window]

Extract

Flutter calculations were made on a fixed root model wing carrying a localised mass. Modes were calculated for the wing for certain conditions of restraint at the localised mass position, the choice of modes being based on observation of the behaviour of wind tunnel models under fluttering conditions. The general agreement between the calculations and experimental results was good and justified the extension of the calculations to conditions of localised mass loading that were not covered by experiment. The extended calculations show that there is an optimum spanwise position for a localised mass from the flutter point of view and, that this optimum position is related to the nodal line position in the overtone torsion mode of the bare wing. For values of localised mass parameters likely to occur in practice, flutter speeds can be estimated from calculations in a very limited number of modes, the choice of modes depending on the localised mass loading.

Type
Research Article
Information
The Aeronautical Journal , Volume 63 , Issue 578 , February 1959 , pp. 95 - 103
Copyright
Copyright © Royal Aeronautical Society 1959

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Gaukroger, D. R. (1953). Wind Tunnel Tests on the Effect of a Localised Mass on the Flutter of a Swept-back Wing with Fixed Root. Unpublished M.O.S. Report.Google Scholar
2.Molyneux, W. G. (1957). Flutter of Wings with Localised Masses. Journal of the Royal Aeronautical Society, October 1957.Google Scholar
3.Molyneux, W. G. (1950). The Flutter of Swept and Unswept Wings with Fixed Root Conditions. Parts I, II and III. R. and M. 2796.Google Scholar
4.Templeton, H. (1953). The Technique of Flutter Calculations. A.R.C. Current Paper No. 172.Google Scholar
5.Minhtnnick, I. T. (1950). Subsonic Aerodynamic Flutter Derivatives for Wings and Control Surfaces. Unpublished M.O.S. Report.Google Scholar
6.Smith, F. and Hicks, W. D. T. (1953). The R.A.E. Electronic Simulator for Flutter Investigations in Six Degrees of Freedom or Less. Unpublished M.O.S. Report.Google Scholar
7.Broadbent, E. G. (1956) 111 Conditioned Flutter Equations and their Improvement for Simulator Use. A.R.C. Current Paper 298.Google Scholar