4 ms·
Sailboats can run faster than the wind because of lift (which is not involved here), but not when running away from the wind
by cblconfederate 5y ago
Sailboats can run faster than the wind because of lift (which is not involved here), but not when running away from the wind
- 6510 5y agothe blades move sideways
- cblconfederate 5y agoif it sails away from the wind, the lift is pushing it sideways, not forward
- jjeaff 5y agoAnd if you turn a sail sideways and put it on a spindle with several other sails, you have what looks a whole lot like a propeller. So instead of sailing sideways so that your air foil sail can move sideways through the wind, the Blackbird harnesses the power of sales moving sideways through the wind while pushing the craft directly into the wind.
- mypetgoat 5y agoExactly. The article does not understand this at all.
- deleted 5y ago[deleted]
- jasonwatkinspdx 5y agoPropellers are lift devices. The lift vector is parallel to the axis of rotation. It all works the same downwind, and the crazy fast boats like the AC72s do in fact sail faster than the wind when running away from the wind.
- cblconfederate 5y agoit's confusing to talk about sailboats and this cart, because this doesn't use lift from the wind to move itself forward, it generates some lift with its propeller