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Fine
Tuning For The Future Taking this yet another step further, the Tunnel Boat Design Program assessed the stability of our STV, arriving at the conclusion that our particular rig would experience relative instability throughout the 55-80 mph range (often referred to as the “hump” zone). Again, the software was remarkably accurate: our STV did “settle in” over 80 mph. All of the data can be displayed as graphs, with user-adjustable increments and ranges. This really helps if there is a specific zone you want to zero in on for analysis. The real fun begins when you alter your setup parameters in the program, and watch the results of your changes. Adding more setback? Relocating your fuel tank? How about adding a canopy? The Tunnel Boat Design Software can tell you the results of your changes – before you spend any money or make any physical changes to your rig. How’s that for safe experimentation? A word of warning about this program though – you will get hooked. I found myself making data changes and analyzing the results for hours at a time. The information you will learn along the way is invaluable.
What are our plans for the future? Well, in
the coming months, our heavily modified 2.5 EFI will trade places with the
stock unit. We’ll get an accurate assessment of the power output of our
modified 2.5, and we’ll put the Tunnel Boat Design Software to use once
again. It would be safe to assume that this program will be right at home
here, and we’ll be incorporating its resources for future tests involving
tunnel boats. On or off the water, Aeromarine Research’s Tunnel Boat Design software is a performance-predicting program that is more than worth the price. There’s just nothing like it anywhere else. Although it was originally designed for professionals (the sheer attention to detail is astounding), it is accessible and easy to use for even complete novices. Pros can dive right in, and amateurs will find that the program can guide users through each step. There is even an option that will validate all the data you input, and alert you if your value falls outside the appropriate range for that variable. The Design screens all clearly illustrate the required measurements, and the included Help file is a gold mine of performance boat knowledge. Each design measurement and aspect of performance is clearly and accurately defined, along with the related background theory. The beauty of it is that the more you use the Help file, the more you’ll find yourself with an increased understanding of what makes a tunnel boat tick. And that can only make you a better and safer boater. You can purchase the TBDP, Version 6.5 at Aeromarine Research's website by clicking here A Note: Although this program provides an extraordinary amount of information regarding tunnel boats, Aeromarine Research also publishes an absolutely comprehensive book on tunnel boat design called The Secrets of Tunnel Boat Design. This book is highly recommended for those who want to explore the actual theory and mathematics behind tunnel boat design. About the Tunnel Boat Design Program’s creator, Jim Russell: Jim Russell is a professional engineer with a mechanical and aeronautics background. Currently living in Canada, he has done extensive aerodynamic research at Universities of Michigan, OH and Toronto, Canada and marine research at the NRC water channel laboratory in Ottawa, Canada. His published papers are highly acclaimed, and are specifically related to the aerodynamics and hydrodynamics of high performance catamarans and tunnel boats. Russell has designed and built many tunnel boats. As a professional race driver, he piloted tunnel boats to Canadian and North American championships. He has written powerboating articles for many worldwide magazines and covered UIM and APBA powerboat races. Russell is the author of Secrets of Tunnel Boat Design (reviewed here), History of Tunnel Boat Design, and History and Design of Propellers. His company has designed and published the well-known powerboat design software, "Tunnel Boat Design Program ©," specifically for the design and performance analysis of tunnel boats and powered catamarans.
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