Electrónica Viento real sin corredera con GMI10 o i70?

[Kane]

Ya falta menos para llegar a Mach 1

The boat that FLIES: Exhilarating images of the world's fastest yacht racing at speeds to up to

60mph

Hydroptere can reach speeds of 60mph using its giant 'wings' to lift most of its frame above the

water
Mast is 28m high - almost as tall as the Christ the Redeemer statue in Rio de Janeiro, Brazil
It can reach 50mph in ten seconds and has broken world records with its aeronautic design

By Anna Edwards

PUBLISHED: 09:29 GMT, 30 April 2013 | UPDATED: 11:44 GMT, 30 April 2013



With its wings skimming across the water, this super yacht soars above the competition.

Its state-of-the-art design means the world's fastest yacht can clock an amazing 60 miles an hour -

and reach 50mph in just ten seconds.

The Hydroptere, which uses marine and aeronautic technology, relies on giant wings to almost fly

across the water.

Pictured in these gorgeous photos taken off of the French coast the yacht, which weighs 7.5 tons, it's

easy to see why the powerful boat has broken so many world records.

The super yacht is an experimental sailing hydrofoil designed by French yachtsman Alain Thibault

and in full flight only 2.5 square metres of the boat are in contact with the water.

This means that it can shoot from 20 to 45 knots (23mph to 51.5 mph) in just 10 seconds.

Named after the Greek words for water and wing (hydros and ptere) the yacht uses the same

principles as an aircraft to give it flight.

To take off, Hydroptere has 'marine wings', the foils, which are placed under each of the floats of the

trimaran.

Once the boat reaches 10 knots, these immersed 'wings' deploy at 45 degrees in the water and

generate an upward thrust which raises the boat like the wing of a plane.

Then the hull and the floats of Hydroptere fly five metres above the sea surface and as in the air, the

higher the speed, the greater the lift.

When fully extended, its carbon fibre sails and mast reach 28m high - the same height as the Christ

the Redeemer statue (minus the feet) in Rio de Janeiro, Brazil.

Over years of trial and error the designers came up with a unique shape to optimise the sail

efficiency and minimise air friction.

The boat is made strong by the use of carbon fibre impregnanted with epoxy and titanium parts.


It's overall length is 74.7ft - three times longer than the average one bedroom British flat.

It's sail area in flight measures 560 m² - much bigger than new UK one bedroom flats, which

measure on average 76m.

They also installed a hundred sensors which measure the pressures, the twisting or the speed which

is analysed in a flight simulator to make minute adjustments.

[jiauka]

Preguntate porque siempre tiene el aparente de proa y a pesar de eso, va vas rapido con reales por la aleta, si el aparente lo frenase, iria mas rapido de traves o de popa cerrada.

[Kane]

Originalmente publicado por jiauka

Preguntate porque siempre tiene el aparente de proa y a pesar de eso, va vas rapido con reales por la aleta, si el aparente lo frenase, iria mas rapido de traves o de popa cerrada.

http://www.windsomnia.com/2010/03/28...nd/#calculator

The apparent wind increases in these examples as the board points closer to the wind. Also the apparent wind angle gets smaller as the apparent wind increases. It is interesting how headed upwind in fig 5c the apparent wind is over 27 knots so it feels like you are going very fast, even though your board speed is only 17 knots. Conversely on a broad reach in fig 5a, the apparent wind is 20 kts, less than the apparent wind on a beam reach in fig 5b, but the board speed is higher. So even though the apparent wind that drives the sailboard is lower the board speed can be higher. This is why when you bear off on a reach to broad reach it can feel like you are slowing down because the apparent wind slows down but when you check your GPS your board speed is actually faster.

[jiauka]

He dicho en popa cerrada o traves!!, no ceñida.

1. Hay menos aparente en popa cerrada que a 1 largo, no?
2. Si el aparente frenase iriamos mas rapido en popa cerrada segun tu discutible teoría.

[Kane]

Originalmente publicado por jiauka

He dicho en popa cerrada o traves!!, no ceñida.

1. Hay menos aparente en popa cerrada que a 1 largo, no?
2. Si el aparente frenase iriamos mas rapido en popa cerrada segun tu discutible teoría.

Los gráficos que he adjuntado son por la aleta, por el través y de ceñida. 120º, 90º, 60º

De popa cerrada (defíneme popa cerrada. Para mí son 180º De todas formas te he puesto ejemplos numéricos para 180º y 160º) Vb no puede exceder Vt.

[Kane]

Lo dicho: diálogo de besugos. Para tí la perra gorda. El aparente no frena ni aunque sean 50 nudos a 0º Edito: en una motora

[jiauka]

Originalmente publicado por Kane

Los gráficos que he adjuntado son por la aleta, por el través y de ceñida. 120º, 90º, 60º

De popa cerrada (defíneme popa cerrada. Para mí son 180º De todas formas te he puesto ejemplos numéricos para 180º y 160º) Vb no puede exceder Vt.

Pues vale, tienes razón, mi Gps, y los Gps y correderas de todos los Minis, Imocas, hydroptere, banque populaire V, y los AC45 y AC 72 mienten.

[Kane]

TWS 15 Vb 15 Tack Angle 180 Va 0,0 AWA NaN Vb máx 15 a T. A. 180

TWS 15 Vb 30 Tack Angle 180 Va 15,0 AWA 0,0 Aparente por proa 0º tabla se frena a Vb 15

TWS 15 Vb 10 Tack Angle 180 Va 5,0 AWA 180 Aparente por popa, puede acelerar hasta máx Vb 15

TWS 15 Vb 15 Tack Angle 160 Va 5,2 AWA 80 Empieza a frenar

TWS 15 Vb 20 Tack Angle 160 Va 7,8 AWA 41 Frena

TWS 15 Vb 30 Tack Angle 160 Va 16,7 AWA 17,9 Frena más. La tabla NO puede llegar a Vb 30

TWS 15 Vb 40 Tack Angle 160 Va 26,4 AWA 11,2 Frenada a tope. Imposible.