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Max speed of sail boats? Max speed of sail boats?

Max speed of sail boats? - PowerPoint Presentation

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Uploaded On 2016-11-02

Max speed of sail boats? - PPT Presentation

Thrust v friction Forces on a boat Key to making a boat go faster is to increase the thrust and reduce the drag Displacement Hull Speed Maximum Hull Speed Maximum hull speed in knots 134 x the square root of the waterline length in feet ID: 483852

speed hull weight boat hull speed boat weight thrust lift maximum drag upthrust

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Presentation Transcript

Slide1

Max speed of sail boats?

Thrust v frictionSlide2

Forces on a boat

Key to making a boat go faster is to increase the thrust and reduce the dragSlide3

Displacement Hull Speed

Maximum Hull Speed

Maximum hull speed (in knots) = 1.34 x the square root of the waterline length (in feet)

- See more at: http://www.sailboat-cruising.com/hullspeed.html#sthash.3J8chSfn.dpufSlide4

Fitted Dinghy

Upthrust

= weightSlide5

Bow wave and wakeSlide6

Rock and rollSlide7

Planing

Upthrust

+ lift = weightSlide8

Thrust constant – drag isn’t!Slide9

Sailboats can plane too!Slide10

HydrofoilsSlide11

This boat has no hull!

Lift from foils = weightSlide12

AC45 - HydrofoilingSlide13