I've laid low for a good while, now it's again time to irritate the experts. Texts on propellers follow wing theory and talk about camber. Sport...
The lift on a prop blade has two components orthogonal to thrust, a radial component and an azimuthal one. Both average to zero when the prop is...
A first for our design. Chapter 5 in the book.
Available on amazon sites in the U.S., Europe, G.B., and Japan. It should show on the amazon web sites in about 4 days. Hydrodynamics of Speed on...
New ideas often come from outside an established field. Kolmogorov, v. Weizsäcker, Heisenberg and Onsager's four parallel papers on turbulence...
New paper posted on lift onset with planing defined. Delta wing-type lift coefficient provided in agreement with Clements' data on v-bottoms.
I worked out a complete set of equations for pitch with rake, blade shape, and camber. The only adjustable parameters are pitch, diameter, and...
Enlarged and updated version of my 2/2016 post on the surface drive forum. Froude and planing are now included, as are more examples of...
This is from an older post: Faltinsen states..... "The pressure carrying the vessel can be divided into hydrostatic and hydrodynamic...
New hydrodynamic scale-free predictions for -prop diameter, shaft hp, RPM -boat speed, shaft hp, weight -how gear ratio changes expected...
Here's a follow-up on my posts of several years ago. I've just completed the ms for a new book (with lots of color photos of fast boats, and lots...
Here are photos from the 2012 Houston Boat Show. The rig is primarily of interest to hunters and fishermen. The prop is like a rotating machete,...
