So I am starting to develop a better understanding of the materials I will be using and construction methods that I can use.
I will be adding the appropriate page tabs above around materials and one for construction.
By way of an introduction to these pages I will highlight some of the decisions made and progress towards goals.
First of all materials.
I am now fully fixed on all structural components being made of 25mm CoreCell, double sided slotted with 1000gsm fibreglass fabric each side. Teh superstructure will be of lighter Corecell with the appropriate glass fabric.
And on the subject of fabric I will be using some strips of Kevlar/Glass fabric at certain points of the boar including the widest points of the hull, the bow waterline, some of the keel, etc to give that extra puncture resistance. Some carbon fibre will be included especially around the mast seatings but generally glass will suffice. I am building an expert team around me of materials experts and have been really enjoying the help of Dick Garrard, who apart from being a funny bloke knows a sh1t load about composites.
Next construction mathods.
Well I have thought long and hard about this and although all the experts done agree with me I am going to go with a modular construction philosophy. In addition I intend to resin infuse the vast majority of parts. The combination of these two facts means that the structural manufacturing sequence is as follows;
– Each hull will be identical and the main hull will be made of 6 major parts, excluding the bulkheads.
– Each hull will be divided longitudinally down the centre-ilne of the hull (see FRAM blog for an example of this);
– Each hull will be split transversly into three roughly equal parts of 6m long each;
– Each of the 3 hull modules (front mid and rear) will comprise of the the two halves of the module and all bulkheads including a stub major bulkhead (more about that later);
– Each module will be joined to the other via a structural secondary bond using kevlar;
– ALL components (or at least the VAST majority) will be made using vacuum infusion and in-situ building minimised;
The bridgedeck will follow a similar path with many modular parts being constructed and se3condary bonding used to fix the modules to the hulls. Currently the plan is…
– Bridgemodule one will include bulkheads 1 and 2, from the front of the forward salon to the forward wall of the cockpit.
– Bridgemodule two will include bulkhead 3 and 4 and take in the entire aft salon;
– Bridgemodlue 3 will include all the parts in the cockpit not covered by 1 and 2.
So there you have the outline of where I am going. The mast layout and design is still a gaping wound in my plans and is causing me lots of headaches
Ok, keep well until we catch up next.