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Development of a rigid folding sail concept to power large ship in order to decarbonate the maritime fret industry.

A collaborative R&D project with participation of the European Union via the FEDER fund.

Partners: Multiplast, Chantier de l’atlantique, ENSTA Bretagne, GSea Design

Sails designed from 300m² up to 1200m²

Build and test of a small scale sail of 50m²


Definition of the design specifications in collaboration with Chantier de l’atlantique

Performance analysis of the sail using fluid structure interaction to asses the shape and twist control in given sailing conditions.

Definition of the structural scantlings to meet the stiffness, strength and buckling requirements on all parts of the sail.

3D modeling of the sail and components, cinematic analysis during hoist and haul down.

Full set of construction drawings and weight estimate

Guidance during construction and testing

Technical environment

Internal software : OPHELIA

3D modeling: CATIA – 3D experience

Computational fluid dynamics (CFD): Fluent

Composite FEA shell model: NASTRAN

Development of a fluid structure interaction loop between the CFD and FEA models

Drawings: AutoCAD