The Design Suite brings unprecedented power and flexibility to sail and rig analysis. Each specialized program can interface with others within the suite, allowing North engineers and sail designers to virtually sail and test a boat in an infinite variety of conditions before construction. The benefit is significantly reduced tuning and development time after launch.
Desman develops a complete rig model in a three-dimensional environment. It is the skeleton of North Sails Software Suite. In Desman we can define all rigging attachment points to the deck, mast size, rigging positions, trimming locations, etc. The modeled sail/rig system incorporates the mechanical properties of the rig and the running rigging, as well as moments of inertia, sail and spar area, materials stiffness and resistance to stretch. Using this information, MemBrain (described later) determines deformation under load for the sail and every piece of standing and running rigging, right down to stretch in the sheets and halyards.
Spiral initially defines the sails’ three-dimensional shape as a ‘molded’ surface without any wind pressure or load applied. Precise control over all aspects of a sails’ shape allows the entire range of sails to be designed, including mainsails, genoas, jibs and asymmetric spinnakers. In addition to the sail dimensions, the sails’ 3D edges and shape are adjustable both in horizontal and vertical axes.