Citazione:
Originalmente inviato da Ceres  .....
non so quando finirà la cosa.. ma inizierò con questo progetto a breve e se qualcuno ha qualche info da girarmi gliene sarei molto grato.
l'idea è di una scala con scafo da 2m e albero da 5m (ca).. fortunatamente non ho problemi di trasporti avendo l'officina a 20m dal lago 
..aspetto ogni commento e intervento costruttivo! grazie! |
qui trovi un po' di dati per i dimensionamenti generali dal sito ufficiale, c'è molto di quel che serve.
BMW ORACLE Racing
riporto qui sotto con copia incolla
Ciao
Fact Sheet - "USA".
Hull
Boat Type: Trimaran of carbon composite construction
Where Built: Core Builders, Anacortes, WA, USA
Overall Length: 114-feet / 34 meters
Waterline Length: 90-feet / 27 meters
Beam: 90-feet / 27 meters
Hours to build: 150,000 hours
Mast
Height: Up to 185-feet/55 meters
Where Built: Hall Spars, Bristol, RI, USA; Core Builders, Anacortes, WA, USA
Wing Sail
Height: 223 ft / 68 m (compared to 102 ft / 31 m length of a Boeing 747 wing and 143 ft / 43.5 m length of an Airbus 380 wing)
Chord: 10 to 45 ft / 3 to 14 m
Width: 2 to 6 ft / 0.5 to 2.0 m
Surface area: 7,000 sq. ft / 650 sq. m (profile)
Weight: 7,700 lbs / 3,500 kg (approx)
Design and R&D
BMW ORACLE Racing Design Team
Mike Drummond, Director; 30 designers and scientists
Principal Naval Architects: VPLP (Van Peteghem and Lauriot
Prévost)
Sails
Mainsail: 6,800 square feet; (630m2)
Genoa: 6,700 square feet; (620m2)
Gennaker: 8,400 square feet; (780m2)
Notes on the wing
The wing sail consists of two main components: the main element and the flap element. The main element is one single piece that rotates around the mast step. Nine flaps rotate around the trailing edge of the main element. Both elements are separated by a small gap and linked together by hinges.
The wing sail is primarily constructed from carbon fibre and kevlar with a light, shrinkable aeronautical film material used as an overall skin over the frame.
According to Joseph Ozanne, an aeronautical specialist with the BMW ORACLE Racing design team, the ability to trim the wing sail easily is one of its big advantages over a soft sail.
"With a soft sail, it's so big, it's difficult to shape as you only have control over three points (head, tack, clew). You need massive tension to trim the soft sail," he says. "With a wing sail, you can get the shape you want much more easily."
The main trim parameters are: master wing rotation (similar to mast rotation on a conventional rig); master camber control (general rotation of the flap element); flap twist control (each flap can have a specific angle of rotation).
"On paper, it's a clear advantage over the soft sail," Ozanne says. "Its on such a different scale to what has been done before, it was hard not to have some uncertainty. But we are more and more confident... I think it's going to be a strong addition for us."