"Powered English wheel" - None of the English wheels I've seen are powered. A common alternative to an English wheel is a power/planishing hammer....
To reiterate Heimfried's comments, the calculated LCB and LCF only apply to the draft/displacement and trim used for the calculations. LCB at 130...
Storing energy on the grid. A very common misconception, encouraged by at least one large installer of solar systems in northern New England. No...
What is the customer requirements? What will the ultimate moldings be used for? How important are aesthetics?
My understanding, perhaps incorrect, is as the length - displacement ratio increases the wetted area also increases. If speed is held constant...
For a boat which is symmetric side to side moving at a constant speed (all accelerations = 0) three scalar conditions must be satisfied. Note that...
Cages around propellers add significant drag. Many lobster boats in Maine have cages around the propeller to prevent the rope from a lobster trap...
Not a complex algorithm but a brief summary of a portion of standard aerodynamics. Multi-variable differential calculus is used which can be...
Two statements which are fundamentally different: 1) The compressibility effects of air can be ignored below Mach 0.3. Therefore air can be...
The BSFC map shown above is plotted on torque vs engine speed. To compare the effects of different propellers add curves of constant power, and...
Adiabatic is usual assumption/approximation for external low speed flow outside of boundary layers. However the temperature differences may be...
Based on ????
A potential disadvantage of wide mounted twin outboards on a monohull is the powerheads might be partially submerged if the boat rolls a lot....
Where at IBEX will these inventions be shown? Is the "corrugated core glassed in multiple axes that allows for a reduction in required skin...
UK canal boats are designed for a very specific set of size limitations, and may not be good boats for some other bodies of waters. UK narrow...
Used to estimate potential sail boat speed for determining racing ratings and handicaps. Also used as a design tool.
No one is saying air changes between a liquid and gas depending on Mach number. To suggest that anyone is doing so implies a fundamental shortfall...
What text says air becomes compressible at Mach 1? Please provide a title and author. Passenger jets are designed using analysis methods which...
Not Mach 3. He said under Mach 0.3 (zero point 3) = Mach 3/10. If the free stream flow approach an airfoil, sail, etc is around Mach 0.3 or...
How recent do you consider to be "modern"? What material for hull construction? What size boat? What use of boat? Are you new to boatbuilding?
