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According to Newton, the sail re-directs a mass of air of the apparent wind backwards to create a backward force (Force = ma). The reactive equal and opposite forward force pushes the sailboat ahead.
According to Galileo a boat can sail downwind faster than the wind for the same reasons that it can sail upwind faster than the wind. Each tack is simply the mirror image of the other one. This is because in both situations the sailboat experiences a headwind, and the true wind is moving backwards relative to the boat.
When sailing both upwind and downwind, the sail extracts momentum and energy from the true wind by slowing it down. That's it.
According to Newton, the sail re-directs a mass of air of the apparent wind backwards to create a backward force (Force = ma). The reactive equal and opposite forward force pushes the sailboat ahead.
According to Galileo a boat can sail downwind faster than the wind for the same reasons that it can sail upwind faster than the wind. Each tack is simply the mirror image of the other one. This is because in both situations the sailboat experiences a headwind, and the true wind is moving backwards relative to the boat.
When sailing both upwind and downwind, the sail extracts momentum and energy from the true wind by slowing it down. That's it.
| Erscheinungsjahr: | 2021 |
|---|---|
| Genre: | Importe, Sport |
| Produktart: | Nachschlagewerke |
| Rubrik: | Hobby & Freizeit |
| Thema: | Wassersport& Segeln |
| Medium: | Taschenbuch |
| ISBN-13: | 9781912724246 |
| ISBN-10: | 1912724243 |
| Sprache: | Englisch |
| Ausstattung / Beilage: | Paperback |
| Einband: | Kartoniert / Broschiert |
| Autor: | Landell-Mills, Nicholas |
| Hersteller: | Boatswain Books |
| Verantwortliche Person für die EU: | preigu, Ansas Meyer, Lengericher Landstr. 19, D-49078 Osnabrück, mail@preigu.de |
| Maße: | 203 x 127 x 8 mm |
| Von/Mit: | Nicholas Landell-Mills |
| Erscheinungsdatum: | 02.08.2021 |
| Gewicht: | 0,151 kg |
| Erscheinungsjahr: | 2021 |
|---|---|
| Genre: | Importe, Sport |
| Produktart: | Nachschlagewerke |
| Rubrik: | Hobby & Freizeit |
| Thema: | Wassersport& Segeln |
| Medium: | Taschenbuch |
| ISBN-13: | 9781912724246 |
| ISBN-10: | 1912724243 |
| Sprache: | Englisch |
| Ausstattung / Beilage: | Paperback |
| Einband: | Kartoniert / Broschiert |
| Autor: | Landell-Mills, Nicholas |
| Hersteller: | Boatswain Books |
| Verantwortliche Person für die EU: | preigu, Ansas Meyer, Lengericher Landstr. 19, D-49078 Osnabrück, mail@preigu.de |
| Maße: | 203 x 127 x 8 mm |
| Von/Mit: | Nicholas Landell-Mills |
| Erscheinungsdatum: | 02.08.2021 |
| Gewicht: | 0,151 kg |
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