Skip to main content Accessibility help

An examination of the influence of waves on the ventilation of surface-piercing struts

  • R. C. Mcgregor (a1), A. J. Wright (a1), P. D. Swales (a1) and G. D. Crapper (a2) (a3)


The paper examines the results of an experiment which was designed to elucidate the manner in which wave characteristics, strut geometry and aspect ratio influence the angles at which struts ventilate. The experiment was conducted using small-scale models in a towing tank which allowed the wave parameters to be varied independently. The results indicate which parameters of a seaway are most hazardous to the operation of a hydrofoil ship in high seas and suggest design features which may extend the capability range of such craft.



Hide All
Crapper, G. D. 1970 Non-linear capillary waves generated by steep gravity waves. J. Fluid Mech. 40, 149.
Eames, M. C. & Drummond, T. G. 1972 H.M.C.S. Bras d'Or sea trials and future prospects. Proc. R.I.N.A.
Kramer, R. L. 1970 An experimental study of the effect of waves on ventilation of surface piercing struts. LMSC/DO 29678.
Longuet-Higgins, M. S. 1963 The generation of capillary waves by steep gravity waves. J. Fluid Mech. 16, 138.
Mahony, J. J. 1972 Cross-waves. Part I. Theory. J. Fluid Mech. 52, 229.
Swales, P. D., Wright, A. J., McGregor, R. C. & Cole, B. N. 1973 Separation and ventilation studies on four foil shapes. (To be published.)
Swales, P. D., Wright, A. J., McGregor, R. C. & Rothblum, R. S. 1973 The mechanism of ventilation inception on surface piercing foils. (To be published.)
Wright, A. J., McGregor, R. C. & Swales, P. D. 1973 Time dependency of ventilation. Hoveringcraft & Hydrofoils, 12, 9.
Wright, A. J., Swales, P. D. & McGregor, R. C. 1972 Ventilation inception on surface piercing foils or struts. Nature, 240, 465.
MathJax is a JavaScript display engine for mathematics. For more information see


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed