tropostudio

Won't need fenders, because you'll be transported on and off the helipad.

Guilty as charged. Here's a great introduction to the Euler equations, the Navier-Stokes equations, and what a blow-up into a...

Thank you, jehardiman. Understood that you will never capture one-one correspondence between the constructed item and a computer model...

@gonzo - Again, I may have used an incorrect term. By 'validation' I don't mean that the final product (boat, ship, offshore structure...

Thank you both, jehardiman and gonzo. I don't intend to be obtuse. I see the term 'physical' used and sometimes it appears to refer to...

This is helpful. Any model is only accurate or useful in its its correlation to the actual phenomena under study. And wouldn't the wave...

@jehardiman - I understand what you are saying and understand how to do dimensional analysis. Perhaps I am using incorrect or...

@jhardiman - for those of us less mathematically inclined: how are simulation methods like VOF or particle-in-cell verified? I.e. how do...

For the 1991 International Submarine Races (ISR) Scripps showed up with an non-flexible oscillating fin design that used a mechanically...

Yes, many variables. IIRC, Bryan used a flexible fin made from a sheet of thin polycarbonate. Foil x-section was irrelevant, but the...

I'd also imagine there is no intrinsic advantage to the crescent planform, especially with the tip chord going to zero. Looks like it...

To add to jehardiman's comment, orthtogonal views give you only so much information. Move off-axis and account for perspective, and it...

Pretty cool, Skip. Do you have an electronic speed controller, or is speed fixed based on battery voltage? It would allow you to...

@Urepedese - the thread has moved away from your original question(s) into talk about materials and fabrication, which is applicable...

If you already have the 3D printer going, I'd recommend looking into using it to make molds for composite foils. If you could iterate...