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Keywords: apparent wind
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Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-005
... collected from an on-board GPS, IMU, anemometer, and camera array is used to generate characteristic motions of the boat and sail relative to the apparent wind. Second, laboratory experiments using the characteristic motion of the sail are run in a computer-controlled 3 degree-of-freedom (X, Y, and θ...
Proceedings Papers

Paper presented at the SNAME 20th Chesapeake Sailing Yacht Symposium, March 18–19, 2011
Paper Number: SNAME-CSYS-2011-002
... are characterized and related to the yacht motion (trim mainly). Coherence between the different parameters is examined. In the system’s response to the dynamic forcing (pitching motion), we try to distinguish between the aerodynamic effect of varying apparent wind induced by the motion and the structural effect...
Proceedings Papers

Paper presented at the SNAME 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-013
..., a 91 foot waterline fore and aft rigged topsail schooner, (Gillmer 1989) for her 2005 summer European cruise. This system recorded the following sailing performance parameters. - Vessel s course and speed recorded from the ship s GPS unit. - Apparent wind speed and direction recorded from the ship s...
Proceedings Papers

Paper presented at the SNAME 16th Chesapeake Sailing Yacht Symposium, March 3, 2003
Paper Number: SNAME-CSYS-2003-010
.... Furthermore, the optimization of the flying shape should be performed for a motion such the apparent wind remains constant. Therefore, the modification of the apparent wind due to the increase in sail performance is considered negligible. This choice can be interpreted as obtaining sails that can produce...
Proceedings Papers

Paper presented at the SNAME 8th Chesapeake Sailing Yacht Symposium, March 7, 1987
Paper Number: SNAME-CSYS-1987-001
... understand­ing of the VPP to many sailors so that they can take advantage of the technology in their normal activities. apparent wind prediction application sailing weather yacht vpp measurement system wind angle boat wind velocity information boat speed certificate sailor knot helmsman...
Proceedings Papers

Paper presented at the SNAME 7th Chesapeake Sailing Yacht Symposium, January 19, 1985
Paper Number: SNAME-CSYS-1985-004
... A discussion of some concepts that apply to the development of small high speed sailing craft in general and to sailboards in particular and an analysis of the design and performance of ordinary, everyday sailboards as well as high speed ones. apparent wind mass density boat speed...
Proceedings Papers

Paper presented at the SNAME 1st Chesapeake Sailing Yacht Symposium, January 19, 1974
Paper Number: SNAME-CSYS-1974-012
..., Equations (2) and (6) D Sail Drag H Heeling force h Height of center of effort L Sail lift M Heeling moment R Resultant sail force s Sail area T Thrust u Boat speed -ii- NOTATION (Concluded) v Apparent wind speed w True wind speed X Defined as h/b f3 Angle between apparent wind and course oh Hull drag angle...

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