Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-03T01:17:10.891Z Has data issue: false hasContentIssue false
  • English
  • Français

Experimental pressure evaluation near a sail leading edge under real conditions

Published online by Cambridge University Press:  04 July 2016

G. Lombardi  and
A. Tonelli
G. Lombardi
Affiliation:
Department of Aerospace Engineering, University of Pisa, Italy
A. Tonelli
Affiliation:
Department of Aerospace Engineering, University of Pisa, Italy
Get access Rights & Permissions [Opens in a new window]

Abstract

The aerodynamic condition corresponding to the optimum sail trim has been long debated; in the present note this aerodynamic aspect of the sails is studied by means of pressure measurements near the sail leading-edge. By analysing the pressure acting on the leading edge zone it can be evidenced that, when the sail is “optimally” trimmed, it is actually in the aerodynamic condition corresponding to the ideal angle of attack.

Type
Technical Note
Information
The Aeronautical Journal , Volume 98 , Issue 978 , October 1994 , pp. 319 - 322
Copyright
Copyright © Royal Aeronautical Society 1994 

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. Buresti, G., Lombardi, G. and Petagna, P. Wing pressure loads in canard configurations: a comparison between numerical results and experimental data, Aeronaut J, 96, August/September 1992, pp. 271– 279.Google Scholar
2. Letcher, J.S. Balance of helm and static directional stability of yachts sailing close-hauled, Aeronaut J, 69, April 1965, pp 241–248.Google Scholar
3. Marchaj, C.A. Aero-hydrodynamics of sailing, Granada Publishing, London, 1979.Google Scholar
4. Barkla, H.M. The behaviour of the sailing yacht, Q Trans Royal Inst Naval Architects, 103, (1), January 1961.Google Scholar
5. Theodorsen, T. On the theory of wing sections with particularly references to the lift distribution, NACA Report 383, 1931.Google Scholar
6. Tonelli, A. Studi numerici e sperimentali su comportamento aerodinamico delle vele, Tesi di Laurea, Università di Pisa, 1993.Google Scholar
7. Wiersma, A.K. On the optimisation of the thrust of a yacht sailing to windward, J Engineering Mathematics, 13, (4), October 1979.Google Scholar
8. McCullough, G.B. and Gault, D.E. Examples of three representative types of airfoil section stall at low speed, NACA TN 2502, September 1951.Google Scholar
9. Crabtree, L.F. Effects of leading edge separation on thin wings in two-dimensional incompressible flow, J Aeronaut Sci, 24, August 1957, pp 597–610.Google Scholar