SOR for "TURBULENCE 2" Main hull LOA =39ft, LWL =38ft BOA =6ft 5ins BWL =6ft Tc =20ins Beam with floats extended = 23ft Floats LOA =35ft LWL...
I never get annoyed with people who are trying to help me. My project has evolved from trying to design a Catamaran to rival Richard Woods designs...
Tansl My copy of chapples book is on kindle which is part of the reason for my mistakes. I appreciate your replies to my posts which may often...
Yes and I was still doing it wrong, I can only blame my eyesight pressing wrong calculator buttons and believing what it tells me. Double checking...
Thank you LP. I hesitate to tell anyone they are wrong, so here is what I know. The formula I was using was (D^2 - d^2/4)^.5 instead of ((D^2 -...
I'm sure everyone will reassure me that a hollow mast is stronger than a solid one for similar reasons that a Grp sandwich creates an I beam and...
I don't know much about Glass cloth I thought plain weave E glass was bi-axial and the stuff Gerr intended for use in " the nature of boats" mik
John Teal says 12mm ply in his example was 1.8 or 11667Mpa. I guess you could specify good quallity Marine ply and it would be good enough.mik.
Cloth would be 10oz plain weave plus 4oz plain weave in E glass. mik
I had difficulty in getting metric figures I could make sence of, my figures are in 10^6lbf/in^2. Normally I can handle metric ok. 7.57 *...
I tried to check youngs modulus for plywood and found 1.08. Applying earlier formula to Richard Woods Romany it could be made with 7.57mm solid...
These calcs are a bit silly. First you calc the rpm at the prop and what diameter prop that engine can swing.
If 1 rpm gave 1kt of speed 1.4/ 1^.57 gives 1.4% slip. 1 - slip = 98.6% efficiency If you could have that efficiency at 1rpm I reccon you could...
Obviously the problem is I don't know the ballast ratio for a 74. I checked in my library no result. I found the values for a typical 32gun...
