Wing-borne Hydrofoil
Interactive 3D CAD model
with vector analysis
- Click and drag the image below to control viewpoint and rotation rate
- Drag the wing roll control point (purple circle) to roll wing and hydrofoil for port or starboard tack
- Drag the vector analysis control point (red-off, green-on) to display forces and velocity triangle
(symbols are listed in the table below)
- With vector analysis on, drag true course control point to change the angle between boat direction and true wind
- Read the full LiveGraphics3D user interface guide here
- Increase roll to optimum value (minimum apparent wind angle)
- Set true course to obtain maximum speed on a broad reach
Notice that even with less roll and modest FA≈ W the maximum speed is twice the wind speed!
| Symbols
|
|---|
| W | Weight
|
| FA | Aero force
|
| FH | Hydro force
|
| VT | True wind velocity
|
| VA | Apparent wind velocity
|
| VS | Boat (ship) velocity
|
