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Keywords: rudder
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Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-010
.... With the proposed control method, skippers can weight each criterion in order to focus on one or the other depending on their goals and the boat's energy balance. We apply this method to one of the autopilot's subsystems, namely the rudder control. The electric actuator intervening in this control loop and the load...
Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-013
... Conventional transom-hung rudders are often used on small sailboats because of their simplicity compared to rudders mounted under the hull; however, they present substantial performance penalties, including (1) the rudder is more likely to ventilate by drawing air down from the free surface, (2...
Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-014
... performance, sail performance, steady sailing performance and maneuvering performance. calculation high-speed sailing kanazawa institute jib variation sailing resistance wind speed wetted area solidfromphoto coefficient rudder twa center board thrust spinnaker heel angle olympic games...
Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-011
... result wolfson unit mtia appended sideforce rudder heel angle test matrix THE 22ND CHESAPEAKE SAILING YACHT SYMPOSIUM ANNAPOLIS, MARYLAND, MARCH 2016 The SYRF Wide Light Project Martyn Prince, Wolfson Unit MTIA, University of Southampton, UK Andrew Claughton, Ben Ainslie Racing, UK (formerly...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-001
...-like performance of the yacht in a VPP is investigated. reservoir simulation single rudder constraint spinnaker rudder investigation ac90 yacht froude number variant 3 appendage configuration ruder twin rudder yacht prediction boat speed consequence rudder configuration wind...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-002
... force sysser 27 mean cl phi expression side force rudder calculation hull sysser 33 side force production coefficient aspect ratio method dsyh polynomial keel upright condition leeway angle formulation THE 19th CHESAPEAKE SAILING YACHT SYMPOSIUM ANNAPOLIS, MARYLAND, MARCH 2009 A new...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-014
... circular hull cross section. The second was Rocker, the bold hydrofoil catamaran, using hulls from the same mold as Alpha and an identical wingsail as the driving force. The daggerboard hydrofoils automatically controlled the ride height with trim tabs, while the control of the rudder elevators was left...
Proceedings Papers

Paper presented at the SNAME 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-004
... In order to be able to calculate the forces on the keel and rudder of a sailing yacht more is to be known about their interaction. Both for determining the yaw balance of a sailing yacht as for the maneuvering it is of importance to have a good assessment on these forces because they determine...
Proceedings Papers

Paper presented at the SNAME 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-017
... The loss of a rudder is a dangerous situation for any vessel, and with the increasingly higher aspect ratios in current sailing yacht rudder designs, a better understanding of the forces on a rudder are required. While many failures have been caused by impacts with objects, a large number have...
Proceedings Papers

Paper presented at the SNAME 17th Chesapeake Sailing Yacht Symposium, March 4–5, 2005
Paper Number: SNAME-CSYS-2005-012
... on procedures it has been found that just considering the straight finding the optimal tacking procedure (i.e. rudder action) for line up wind speed potential of the yacht alone, as it is being finding the minimal speed loss of a particular yacht during a predicted by the Velocity Prediction Programs (VPP...
Proceedings Papers

Paper presented at the SNAME 16th Chesapeake Sailing Yacht Symposium, March 3, 2003
Paper Number: SNAME-CSYS-2003-012
.... strength rudder experiment criteria laminate research project knot midshipmen student abs guide unpublished report boat keel design resistance navy 44 vpp naval academy demeyer THE 16th CHESAPEAKE SAILING YACHT SYMPOSIUM ANNAPOLIS, MARYLAND, MARCH 2003 Student Research Projects...
Proceedings Papers

Paper presented at the SNAME 16th Chesapeake Sailing Yacht Symposium, March 3, 2003
Paper Number: SNAME-CSYS-2003-001
... as previously presented by J.Gerritsma (1971) and K.Nomoto (1979). The outcome of this modified procedure is compared with the experimental results obtained both within the DSYHS and the Delft Systematic Keel Series (DSKS). In the DSYHS one keel and rudder have been tested under a variety of hulls...
Proceedings Papers

Paper presented at the SNAME 16th Chesapeake Sailing Yacht Symposium, March 3, 2003
Paper Number: SNAME-CSYS-2003-014
... the twin daggerboards and a single inverted T rudder, the boat could be sailed in one of three modes: fully displacement with the lifting foils locked in neutral; one hull displacement and the other flying under automatic height control; two hull flying. The small size and structural fragility of the 4.9m...
Proceedings Papers

Paper presented at the SNAME 16th Chesapeake Sailing Yacht Symposium, March 3, 2003
Paper Number: SNAME-CSYS-2003-015
... of motion dealt with coupled ship motions of surge, sway, roll and yaw with co-ordinate system using horizontal body axes. The numerical simulation indicates ship response according to the measured time history of rudder angle, and shows the ship trajectory and the sailing state parameters such as heading...
Proceedings Papers

Paper presented at the SNAME 13th Chesapeake Sailing Yacht Symposium, January 24–25, 1997
Paper Number: SNAME-CSYS-1997-013
... with by an approximate method, briefly explained in this paper. wave resistance yacht coefficient viscous resistance equation total resistance hull procedure wave-pattern resistance keel rudder separation rudder assumption rudder angle resistance appendage conclusion separation - ·0...
Proceedings Papers

Paper presented at the SNAME 11th Chesapeake Sailing Yacht Symposium, January 28–30, 1993
Paper Number: SNAME-CSYS-1993-018
... compared with the numerical simulation. The simulation showed good agreement with the sea test data. body axis coefficient sea test osaka university ishikawa prediction program fin keel sailing performance rudder good agreement axis boat cruiser inertia kanazawa institute...
Proceedings Papers

Paper presented at the SNAME 11th Chesapeake Sailing Yacht Symposium, January 28–30, 1993
Paper Number: SNAME-CSYS-1993-020
... information to the American Syndicates. new zealand rudder cup technology keel maryland partnership gretzky syndicate appendage usa baltimore international america pact aft rudder overview james america - THE ELEVENTH CHESAPEAKE SAILING YACHT SYMPOSIUM The Partnership for America's...
Proceedings Papers

Paper presented at the SNAME 9th Chesapeake Sailing Yacht Symposium, March 11, 1989
Paper Number: SNAME-CSYS-1989-006
... Towing Tank tests on a single 2.4 m LOA model hull form with 3 alternative counter lengths, and 2 alternative rudder configurations have been carried out in the Southampton Towing Tank. The results were used to derive predictions of full scale resistance curves for a 10m L WL racing yacht...
Proceedings Papers

Paper presented at the SNAME 7th Chesapeake Sailing Yacht Symposium, January 19, 1985
Paper Number: SNAME-CSYS-1985-001
... keel fin keel position centre keel experimental analysis resistance yacht delft towing tank scheel rudder analyse THE SEVENTH CHESAPEAKE SAILING YACHT SYMPOSIUM Experimental Analysis of Five Keel-Hull Combinations Prof.Ir. J. Gerrttama and Ir. J.A. Keunlng, Delft University of Technology...
Proceedings Papers

Paper presented at the SNAME 2nd Chesapeake Sailing Yacht Symposium, January 18, 1975
Paper Number: SNAME-CSYS-1975-001
... for various true wind speeds. A "rating matrix" approach is discussed, which could be used to rate fairly a wider range of yacht sizes, types, wind conditions, and course angles than present rating systems can accommodate. wetted area coefficient wind angle wind speed rudder sailing applied...

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