13_Binns.pdf (1.51 MB)
The effect of heel angle and free-surface proximity on the performance and strut wake of a moth sailing dinghy rudder T-foil
conference contribution
posted on 2023-05-26, 07:24 authored by Jonathan BinnsJonathan Binns, Paul BrandnerPaul Brandner, Plouhinec, JThe use of hydrofoils for sailing yachts is becoming more prolific. However its use in mainstream sailing classes has only become standard for the Moth dinghy class. The Moth class uses a twin T-Foil design, one on the centreboard for primary support and one on the rudder for additional support and control. The rudder T-Foil forms the basis of an experimental study carried out at the Australian Maritime College towing tank facility described here. Lift and drag data is presented for upright and heeled configurations considered indicative of windward sailing conditions. Force variation with respect to angle of incidence, depth of submergence and onset flow speed is presented using elliptical lift distribution parameters for easy design use. In addition deflection of the strut run-up was attempted to produce additional lift. Finally, a windward sailing condition prone to ventilation has been identified.
History
Publication status
- Published
Event title
The 3rd High Performance Yacht Design ConferenceEvent Venue
Auckland, NZDate of Event (Start Date)
2008-12-02Date of Event (End Date)
2008-12-04Rights statement
The definitive version published by the Royal Institute of Naval Architects, Copyright 2008 RINARepository Status
- Open