New book ms on surface-piercing props and raceboat design

[sandhammaren05]

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 of equations) that covers props and tunnels from the standpoint of physics/hydrodynamics. I'm looking for a publisher.



Here are the title and the table of contents:

The Physics of Surface-Piercing Propellers and High Performance Boats
Speed through drag reduction

Joseph L. McCauley
Physics Dept.
Univ. of Houston
Houston, Tx. 77204
outboard_services@mccauleyandson.com


Table of contents

1.Hydrodynamics

1.1 Basic equations of fluid flow
1.2 ‘Dry water’
1.3 The Reynolds number and scaling
1.4 Vorticity, the boundary layer, and the wake

2. Propeller efficiency

2.1 Propeller approximated as an ‘actuating disc’
2.2 A propeller blade creates a helical wake
2.3 Scaling of thrust, torque, power, and efficiency
2.4 Mechanical efficiency of propellers

3. Optimizing raceboat performance

3.1 Optimizing acceleration and top speed
3.2 Scaling of propeller diameter with power and RPM

4. Form drag, waves, and skin friction

4.1 Dynamics of vorticity and vortices
4.2 Boundary layer separation and eddy creation
4.3 Scaling of speed with power and weight

5. Theory of lift and drag on a hydrofoil

5.1 How an airplane flies, how a propeller propels
5.2 Theory of lift and drag on a hydrofoil
5.3 Propeller blades as rotating hydrofoils

6. High performance boat set up

6.1 Fast boat bottoms and set-up
6.2 Planing speed
6.3 Camber, center of pressure and stability of a tunnel
6.4 Rake and prop riding
6.5 Lubrication, tractor and overdrive gearcases, world speed records, and emissions

The attached photo shows my son (he and the next two behind him are running my props) at the start of heat 3 in the SST45 Class national championships last Sept., 17 tunnels on a 30 sec. course.

 

[cmckesson]

Have you considered self publishing?

Given the narrow market for such a work, I and several colleagues have found self-publishing via Amazon to be a quite satisfactory experience...especially after hearing a few horror stories from colleagues who went the traditional route.

Have you considered simply self-publishing? On Amazon it takes nothing more than a final PDF final, easily created in LaTeX.

 

[sandhammaren05]

Good suggestion, finding a publisher is in the works now and I'm not sure I'll manage that. Unfortunately, although I am a theoretical physicist I have not learned LaTex. Used it in part once in 1997.

 

[PetterM]

If you publish, I would buy it.
Always interesting with others point of view when it comes to propeller design and boat design.

 

[sandhammaren05]

You're on.

 

[cmckesson]

Sname

Actually, I just had a meeting with the SNAME Executive Director and he tells me that SNAME is moving into Print on Demand publishing of this sort. They might be the appropriate imprint for your work.

 

[sandhammaren05]

You're right, thanks, do you have contact info for me? It's too much racing and performance oriented for a physics publisher, too many serious equations for a John Q. Public publisher.

 

[sandhammaren05]

If you publish, I would buy it.
Always interesting with others point of view when it comes to propeller design and boat design.

I didn't get into your web site. May I ask what you do? Jeg kjenner meg godt med gammle Norge, landet er en båt paradis.

Beste vennlig hilsen,
Joe

 

[powerabout]

http://www.forbes.com/sites/deborahljacobs/2014/04/25/how-to-self-publish-your-book-through-amazon/

 

[PetterM]

Hi Joe,

The Berserk Design (and the web site) is on the back burner for the time being. At Berserk Design I exclusively do high performance boat design, stepped hulls calculations, aerodynamics CFD etc etc, I am still serving existing customers but actively seeing new ones.

Lately I have been focusing on commercial boat design with www.ekersandvik.no

Previously I worked many years in England developing a controllable pitch surface drive, then on to designing CPP’s with Servogear for relatively fast boats, including the latest Palmer Johnsen 48 Supersport.

Do you have a Norwegian connection Joe?

Norway is a boating paradise when the weather is good

Cheers,

Petter
petter@berserkdesign.com

I didn't get into your web site. May I ask what you do? Jeg kjenner meg godt med gammle Norge, landet er en båt paradis.

Beste vennlig hilsen,
Joe

 

[BMcF]

Previously I worked many years in England developing a controllable pitch surface drive, then on to designing CPP’s with Servogear for relatively fast boats, ....

Did the CP surface drive become a product?


And just an aside....I was involved in the construction and trials of catamaran ferries built in Mandal (Batservice a.s.) that incorporated some of the early Servogear CPP drives. Early 1990s...I believe the gentleman from Servogear that was directly involved was Endresen? Was that during your time with them?

 

[cmckesson]

Bill, the CP surface drive was also in Oslo at the same time: It was the CPS drive, pioneered by a very small shop. I have some old brochures in my files, but a quick internet search also revealed a discussion right here: http://www.boatdesign.net/forums/surface-drives/variable-pitch-surface-drive-29916.html

 

[BMcF]

Thanks, Chris! We were experimenting with a fixed-pitch surface drive from Sonny Levi around 1990-91; a pair of them in a small SES. It didn't work out well....controllable pitch could have saved the day on that design, I believe. Although it had some other technical issues as well.

Also about that same time frame, Sulzer/Escher Wyss (sp??..I'm going only on my bad memory) delivered a prototype controllable surface piecing GB and prop system for a Blohm and Voss 38-meter SES. That system was computer controlled...took quite a while to get the pitch schedule properly sorted out, as I recall. I'm not aware that any more of those CP surface prop packages were ever produced.

 

[cmckesson]

Yeah, I have a file of the full set of open-water curves for that Escher-Wyss prop and it had very nice efficiencies.

It also had that trick upstream ramp that was used to control the prop immersion by changing the position of the free surface (as opposed to changing the position of the prop shaft, as in Levy / Arneson / etc.)

 

[BMcF]

Yeah, I have a file of the full set of open-water curves for that Escher-Wyss prop and it had very nice efficiencies.

It also had that trick upstream ramp that was used to control the prop immersion by changing the position of the free surface (as opposed to changing the position of the prop shaft, as in Levy / Arneson / etc.)

That ramp, and that additional degree of control freedom it brought, was one reason that getting the overall control schedule sorted out took quite a while. Made doubly difficult by the fact that the vessel was an SES and the lift fan RPM setting also played a significant role in managing the vessel through and past the drag hump.

Good times, though. Living at the B&V bed and breakfast in Eckernförde, from where we conducted sea trials over a period of about two years, was a very good time.