Schickler Tagliapietra

Dusseldorf was great success.  Two of two projects from ST were featured in a video on the german site http://segelreporter.com.  Both the Linq CQ6 and Whites Dragons proudly displayed Schickler Tagliapietra on their main sails.  link

Now, a late addition has been added to the discussion panels for the 2nd annual International Yacht Forum in Hamburg.  Doug will be attending and joining his collegues on stage to discuss appendages and their importance to overall yacht performance and control. link Happy to meet you in the Hansestadt!

Schickler Tagliapietra is proud to join LinQ boats at B57 in Hall 16 for the Boot Düsseldorf trade show. Davide will be joining Doug at the stand for Monday and Tuesday.

At the stand you can get your hands on the CQ6, with design by LinQ boats and engineering by Schickler Tagliapietra.  ST specially refined the canting keel spar, the lifting surfaces as well as rig and composite framework of this exciting machine.  Full on planing without even trying very hard is the outcome!  The CQ6 is a growing class as of yet unmatched in the “pocket VOR” marketplace, with its canting keel technology.

Also at the show will be Whites Dragon, a foiling catamaran project launched in the Fall.  ST is proud to be associated with this boat, having provided strategic structural support during construction.

Please come by and pay us a visit, ask us about the other exciting canting keel and multihull projects we have in the works.  You will be surprised!

Davide has been invited to speak this week at an exclusive round table on the technology of racing yachts, especially the America’s Cup.

We want to congratulate  Fabrizio Dragoni and Edoardo Bianchi, collectively Whites Dragons (FB, or site) for the first successful flights of their catamaran! Schickler Tagliapietra was a tutor and supporter of this project through the process of design, particularly in regards structures.  We look forward to more developments in the future.

Below is an excerpt from some recent press releases:

Concept:

The main goal was to create an easy boat, simple to transport, which can be sailed on foils instinctively, hardly different than a regular cat.  Further, it had to be tremendously fast.

Design and Construction:

The two students designed and ultimately self-built this 2 person hydrofoil cat, almost exclusively of carbon fibre.  Working with carbon A class hulls as a starting point, and borrowing the sail plan and mast directly from the Tornado class, they were well on their way.  Simulation based design, tutored by Davide Tagliapietra, focussed on flight dynamics, VPP, foil hydrodynamics (CFD) and accurate dimensioning of newly built components using Finite Element (FEA).

Principal Data

• LOA 7m
• LWL 5.5m
• Beam 4m (!)
• All up weight 125kg
• Mainsail area 16.35 m2
• Genneker ca. 17-20 m2

By October the boat was sailing regularly and the results were convincing.  Speeds over 20 knots with only the main have been achieved.   With the genneker, the boat was able to fly in about 6 knots of wind.

Supporters:

www.ribacomposites.it
www.modelleriabrussolo.com
www.styacht.com
www.YCI.it
www.angeloglisoni.com
www.Rostan.com
North Sails Carasco
www.compositipuntamanara.com

Our eco-friendly clients, GardaSolar, introduced their GS4 solar/electric rental boat to the Italian market in Genoa.  The innovative design, executed by Davide, has already won the D2T Business plan contest.  Now, with the realization of the prototype, testing can begin and the production moulding produced.

The press and public, without exception, looked twice!  Most people walking by stop to have a chat as well.  They learned more details about GardaSolar’s vision for sustainable and recyclable mobility.  World wide clients expressed considerable interest for locations such as India,  Dhubai, and of course Amsterdam.

Schickler Tagliapietra joined them in the booth, presenting our services in high technology yacht solutions, coupled with modern design.

OpenFOAM is one of two CFD packages that are under consideration at ST for our internal CFD research and ultimately FSI solutions.

In the last months OpenFOAM has been implemented for both stationary and 2-6 DOF cases, generally involving free surface interaction.  This implementation is part of ST’s ongoing commitment to be a simulation based practice employing the latest technologies for improved performance.

Here is one example showing a candidate catamaran hull tested at 15 knots.  Data such as resistance and moments to maintain proper trim are compared between a number of candidates.  With a simulation like this one, the effect of the transom immersion can be more accurately understood.

OpenFOAM simulation of catamaran hull

In mid September 2010, the protocol and draft design rule for the newest generation of America’s Cup racing yachts was revealed.  To nobody’s surprise the match will be raced in large wing powered catamarans.  Already during the course of the last match, ST began acquainting itself with the performance of wing rigs.

Preliminary CFD analysis of 2 element wing

ST has had tools for the generation and testing of curved, twisted and blended foil shapes for some time.  New work for parametric and systematic generation of hull forms has been carried out.  The control system of wings has been studied and the nascent class rule scoured for valid design directions.  This will be the most demanding Cup cycle in recent memory, and ST is ready.

ST has been working with CompoTech since 2007 on a variety of projects.  The latest is the re-design of their F20 Predator catamaran.  The current Predator is a very fast cat, finishing in the top 10 at Round Texel, behind only the M20.  The lines of the boats will be revisited with an emphasis on reducing drag and improving longitudinal stability.  The parametric hull generator matching CompoTech’s stringent manufacturing requirements has been completed.  ST will be using OpenFOAM RANS solvers and slender body theory to score the candidates.  Foils will also be optimized in similar fashion, employing both 2D and 3D simulation.  Finally, the balance of the sailplan will be studied to enhance the boats overall performance.

Candidate Hull generated parametrically

This is a concept design prepared for ocean cruising, featuring retro styling. Visually the shape of the hull has strong roots in classic pilot cutters, but with a more sleek interpretation for a sea kindly yachting experience. On deck, modern minimalistic detailing is developed from the straightforward house and cockpit shapes, with a significant coaming for cockpit protection. The stern overhang features a long storage volume, enclosing a tender to be launched with the main boom. The rigging and sailplan of the yacht are fully modern, with a large mainsail roach. The boom is a park-avenue style with lazy jacks to facilitate mainsail control. A bow sprit carries the tack point of the headsails far forward. Powered roller furlers for the head-sails are a must for this sailplan.

On deck, the concept would be to use Harken deck hardware, with a captive reel winch for the main halyard. Magic trim rams could be selected for main and jib sheets, as opposed to hydraulically powered deck winches.

Key technical features of the design are the moderate stroke lifting keel, swept back slightly in its fluid motion, the carbon spars with 30 degree swept spreaders and no aft rigging, and the sandwich construction throughout. Lamination of the hull and deck is with E-glass/epoxy on Corecell, but features Aramid woven material below the waterline. Forward there are a pair of collision bulkheads, and aft another just in front of the twin wheels. Carbon fibre is used in all frames and on the keel box to deal with the loads.

The interior concept is a relatively open, with owners suite forward and two guest cabins aft. The main salon dominates the middle of the boat. The keel box is integrated into the interior layout, with a passage between the trunk and the owner’s head and shower and the galley on the opposite side of the boat. The crew space is forward with a separate head.

This is a concept design for a 9m production daysailer with the requirement that two complete boats be shipped in a 45′ high cube shipping container. The brief was met with a stylish ultra simplistic appearance and operation, composite rigging and roller furling boom.  The option for lifting keel version exists.  Displacement is 2.2 tonnes with the fixed keel, but just 1.8 tonnes with lifting keel.

LOA      9.5 m (31 feet)

LWL      7.4m (24 feet)

Beam    2.3m (7.5 feet)

Draft    1.4 m (4.6 feet)