Downwind faster than the wind: Sailing explained by Newtonian physics and Galilean relativity - Couverture souple

Landell-Mills, Nicholas

 
9781912724246: Downwind faster than the wind: Sailing explained by Newtonian physics and Galilean relativity
Couverture souple
ISBN 10 : 1912724243 ISBN 13 : 9781912724246
Editeur : Boatswain Books, 2021

Synopsis

New analysis shows how Newton and Galileo provide a straightforward and useful explanation of sailing.

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.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Éditeur
Boatswain Books
Date d'édition
2021
Langue
anglais
ISBN 10 
1912724243
ISBN 13 
9781912724246
Reliure
Broché
Nombre de pages
130
Coordonnées du fabricant
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