Olaf Harken of Harken products has to be given the ultimate praise for having conceived of the idea, and then putting the group of people together go forward with such a bold new combination of new ideas.
The PROCYON project was born out of a need to modernize sailing boats to meet the demands of today?s life-styles and help revitalize a slumping industry.
The project was conceived four years ago and a set of criteria was established that the design must meet. 1) To increase the speed and performance of a typical cruising yacht between ten and twenty percent. 2) To increase the comfort of the typical yacht through less heeling and better creature comforts above and below. 4) To be able to sail the boat under arduous conditions with a crew of two or three people. A design and production team was formed that includes some of the top people and companies in the industry; in fact, only some America?s Cup efforts have rivaled the size and expertise of the PROCYON Group. The yacht will be named Amoco Procyon and will be owned by Procyon, Inc., which is comprised of members of the design and production team and additional individual or corporate members. Amoco Procyon is scheduled to be launched in January or February of 1991 and will go on an extensive promotional and racing tour during the 1991 season, starting at the Miami International Boat Show. With sales ratios running 20:1, power against sail, ways to breathe life into the sailboat market are on the niinds of all who rely on the sport as a means of putting bread on their tables. Recently, the sailing arm of The New York Times publishing group (Sailing World, Cruising World, and Sailing Scene) mustered some 200 builders, designers, equipment manufacturers, niembers of the marine press, and advertising professionals for a seminar that sought to identify the causes of and cures for sailing?s present doldrums. Many good minds jousted with the complexities of ?the sailboat question,? approaching it from their own areas of expertise. Perhaps her most serious departure from the norm is an articulated wing keel that can be pivoted to windward some 25° in the transverse plane to yield a higher sail-canying capability with a minimum of heel. In a nutshell, the Amoco Procyon represents a very positive step toward confronting the limitations of present craft while supplying future sailors with advantages that many believe will be attractive to buyers?notably, speed, comfort (minimal heel), ease of handling, access to more harbors, and progressive interior styling. Location: St Augustine Fl, Thailand Boom Design alteration Note that most of the early photos and illustration depict a wishbone style boom. Location: australia Yes a boat full of innovation, but the market has seen and made its decision. Location: australia Brian I whole heartily agree with you the more innovation the better, my point was more the uptake of those ideas, what kills a great idea in the market place? Winged Canting Keel I learned about this great boat when doing research on my own version of a winged canting keel. Location: Lake Pontchartrain As of April 2, the PROCYON lies in Tampa Bay and is up for sale per this ad. In the recent year she was completely refit on the interior with an absolutely gorgeous teak interior. Originally Posted by brian eiland The project was conceived four years ago and a set of criteria was established that the design must meet. Location: Lake Pontchartrain When new sail materials, or keel wings, etc give 3% to 5% increase in speed, I agree that a design that gives 15% increase is outlandish.
Location: Lake Pontchartrain Perhaps there were development factors that contributed to the cost.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. A Little HistoryWhat started out as a bizarre experiment turned into the most impressive Shallow water jet boat we ever put in the water.
Moose Sniper PlatformCheck it out!  The new SJX "Moose sniper platform kit."  This kits stows in the boat and takes up very little space. When we originally came up with the concept of a high performance, durable yet light and nimble tunnel-hull inboard jet boat back in 1998, the idea seemed a bit radical. In September of 1998, we custom ordered a prototype 21′ tunnel-hull with a Mercury V6 Sportjet package. Over the past ten years, the unique tunnel-hull inboard design we developed has been the best selling tunnel-hull jet boat in the country because of it’s superior power-to-weight, miserly fuel economy, unmatched shallow water ability, brutal acceleration, tremendous payload and unmatched handling. The unique design of this jet boat changed all the rules and reigned supreme in the jet boat market. With over 45 improvements and dozens of new standard features, the SJX Jet Boat will be the most sought after jet boat in (or out of) the water. Location: Oriental, NC Based on your reply, I'd look at the CG being too far forward.
Last year i removed the super structure and replaced it weh a 2mm aluminum flat deck and aluminium floor.
Location: Oriental, NC Considering what you have already done, it should not be too hard to introduce a bit of rocker to this stern. I'm really guessing a little here, but that is what some builders do for the same objective although they build it into the original hull.
Guest625101138 Previous Member   Without a cabin or windscreen the hull is set up reasonably well from an aerodynamic perspective to fly downwards by the bow. As an example I used to have a deep keel boat that got an annoying roll when running beam to wind.
The point I am making is that over something like 40mph you really need to be thinking about the aerodynamics not just the water interface.


Originally Posted by weehenry Last year i removed the super structure and replaced it weh a 2mm aluminum flat deck and aluminium floor. Rick's aerodynamic considerations are also valid, so you have a combination of these effects, imho. 2) try to move the CG backwards by placing a well-fixed ballast somewhere close to the transom.
5) the most difficult one: modify the trailing edge of the hull by giving it a slightly upwards-sloped shape.
Guest625101138 Previous Member   The steadily rising deckline for the linked hull reduces down force a little. Swath and hydrofoil as a hull for Kiteboat » Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Search this Thread Advanced Search Similar Threads Thread Thread Starter Forum Replies Last Post Lifting Spinnakers:does it lift the bow? 04:58 PM  Can anyone give me information of modifying my hull for better performance?
Location: Maryland, USA Moth Main Foil Design I have performed some design analysis of a hypothetical Moth main foil using Tom Speer's lifting line spreadsheet for the optimal uniform downwash plan form, applying the NACA 63-412 section- since that is common in the Moth foilers these days- for this initial study. I used XFLR5, which is XFOIL re-written in C++ by Andre Deperrois, a French Aero-modeler who loves sailplanes, and quite well done at that in my opinion. I want to build this foil, or something like it anyway, probably with my own purpose designed section inversely designed using the XFOIL internal to XFLR5. The idea was to have the rudder slide up and down like a daggerboard using the flap to create turning force. Your rudder stock area appears to be fixed so I was thinking that you might be using the flap for turning?
Actually, I have had a design for a flying catamaran called the 'Longbow 22' since the mid '80's, I just never enacted the plan.
Then when I moved to Maryland, I worked for a company making computerized motion control (or ride control if you perfer) systems for high speed ships- traveling all around the globe engineering, installing and sea trialing these systems, and I 'didn't had the time' to do these fun things. So, enough of that, recently I joined this forum, where my interest in flying sailboats was rekindled, and I started working on the Longbow 22 again. Anyhow, I can analyze wings of all sorts- I have a collection of tools for that for sure, and also have Algor and SolidWorks in addition to Rhino. If you determined that the Rhino model had twice the actual required span, you win 5 points! Because of the length, rotation to flying attitude might be tricky- the take off condition of the foil analysis previously posted is 5 degrees geometric incidence with 10 degrees of flap- this produces 250 Lbs of lift at around 6-7 Knots, correcting for immersion which XFLR5 does not do.
Location: Maryland, USA Sail Design Here is the Canoe sail analysis done in XFLR5. It is not too difficult to simulate more gap by applying a mast base shape for a section at the center. So far, I have really only been hypothetically speaking of the canoe design- I really need to do all the lift, drag and moment balances to find out what will work for an area split between the foils.
With this in mind, and some other sporatic references to this vessel on the web, I thought it might be interesting to start a subject thread on this vessel specifically, and that might bring together some of the scattered information that might be found.
I was fortunate enough to know Olaf personally, and to be very interested in his project, as it involved considerable alterations to the ?conventional? sailing rig, a subject I have dealt with for a long time. The name comes from a bright star in the Spring sky that hovers over the sailing constellations. This team has achieved the design criteria and is now building a yacht that will incorporate these concepts.
It is being borne by our primary sponsor, Amoco Chemical Company, members of the design and production group, material contributors and some needed sponsors and shareholders still being sought.
The boat will demonstrate the latest in technology in many areas including sailing for the physically disabled, recycling and solar energy. The increased drag is substantially overcome by the increased efficiency of the reduced heeling moment. This event spanned a day and a half in Miami, Florida, just prior to the trade clays of the boat show there. As a result, the solutions that emerged fell into several categories, most notably marketing, education, and design. Participants were charged with a desire to help win sailing?s battle for greater market share, and it will be interesting to see what concrete action materializes in coming months.
As often as not, such efforts only bring a designer well-deserved credit long after he could really use it..
This is a feature David Hubbard and Eric Goetz used successfully on the fast and narrow monohull Red Heiring, built in the late ?70s for Van Allen Clark.
The construction of this boat, which is already impressive on paper, is to be shared by several firms. And that aspect of the design is being used by several designers just in the last couple of years with Andy Dovel using it on Atomic and several other race winning canting keel boats, Julian Bethwaite using it on his new 79er, the Backman 29 using it and the kFOIL uses a retractable version of a winged canting keel. She is now a true bargin to anyone who desires a unique, one-of-a-kind state-of-the-art performance cruiser at $895,000. If that is the case, then its removal has saved you a lots of weight but has probably moved the CG of the boat forward.
Now, since the bow is curved in the forward part you basicaly do have a keel with a rocker now.


The size is a 875mm span x 125 MAC, with a 20% flap, although this study shows the flap hingeline curved, which is obviously not practical. You will find the polars are much wider than would normally be published- this is because the method used by the author of XFLR5 for the LLT and VLM wing analysis interpolates the polar information for each section, and you must include all points in the 'flight envelope' when generating the polars with the built in XFOIL analysis prior to the wing analysis. I'm not sure how much research you've done on the Moth but here are some stats and notes I've found: Pounds of all up weight per sq.
What kind of altitude control system do you have in mind-will it be affected by pitch up as is the Moth wand? The step is to allow the turning force to be more or less the same on or off foils so that rudder throw would be the same. For some history, while in Indiana I raced an M-16 Scow with the Lafayette Sailing Club, Lafayette Indiana, racing Portsmouth handicap with Lightnings, Lasers, Interlakes, Flying Scots, Finns, and an E-Scow or two occaisionally and of course other M-Scows on Lake Freeman.
But I had the canoe in Rhino already, the foils are a piece of cake because I have scripts to directly apply foil sections, I also automated Tom Speer's spreadsheet to output the chord distributions for the both foil planforms and also a ClarkY wing mast which I was also investigating originally for Longbow, so there it is! LOA- 16.5 Ft, Kaper drag predictions say 14 lbs at 6 Knots- ideal for acheiving takeoff speed, even with 2 people in it. For such cases where I can't use a biplane image foil, I use some depth correction methods from NACA report 4168. It seems so easy though , starting from the Moth concept foil design I originally had in mind here.
Glen's boat has a much smaller elliptical aft foil, about half the surface of the Mistress, and foils beautifully. It will provide an exceptional platform for corporations to show off their products, and can be utilized for public relations, entertainment and other promotional purposes.
In the interim, let?s examine the options proposed by the group, using the design, marketing, and education concepts as points of departure. The main and jib are both mounted on lulf-style furlers, with the mainsheets out on a wishbone boom. Windship Trident Ship-works (Tampa, Florida) will mold the Amoco Procyon?s hull and deck, using materials supplied by the project?s principal sponsor, Amoco Chemical Company (Chicago, Illinois). Lots of advantages in terms of getting rid of a forward rudder or a daggerboard or boards for extra lateral resistance in a canting keel boat. The original interior left much to be desired and thus the new interior look is a true welcome, as well as a new exterior paint job. Most hook or wedge will be applied within the last 4 inches of the boat, but measure 8 to 12" onto the running surfaces.
I wouldn't be surprized that at high speeds a suction force is created in this zone, acting downwards. This must be done for all Reynolds numbers and incidence angles you expect and then some, so I did not edit the polar information, I left it extreme. These systems included heavy involvement the design of the first 4 square meter T-foil ever produced for ride control for the 'Condor 10', a wave piercing catamaran built by Incat down in Tasmania in the early 90's.
I have'nt actually finished a whole balance on the idea yet- it was only a spark of an idea when I created that JPG of the canoe.
In order to dramatize the concepts, a sixty-five foot boat is being built, even though they are perfectly viable on smaller boats. A bipod mast of carbon fiber supports the rig, and it is mounted on double tabernacles to permit lowering for passage through structures with air-draft restrictions, such as bridges and high-power lines. Catalina Yachts (Woodland Hills, California) is slated to fabricate the interior and provide the finish work on the boat?s major components. In fact I don't believe they ever intended to patent it, maybe only some particular detail on it that might have greater potential use thru out the industry. The goal was a strong but light boat that would perform well as a cruising vessel and display the many Harken products that are abundantly on this vessel. If there is hook or wedge already applied, it can be sanded down to raise the bow and reduce bow steering. It is a known hydrodynamic phenomenon and the steering problems you've described fit that picture perfectly. The weights and areas for the Moth are quite similar, so since I had the wing in XFLR5, I started scaling my design to something buildable- and there was the canoe!
I have been talking to him about trying to come up with a Moth rig- what I should probably do is just build a Moth, but in the process maybe I can fly the canoe sine it could be the same foil.
One last question: will you design the daggerboard and rudder installations to allow easy changes to the foil(s) angle of incidence for testing?
The 65? monohulled sloop is named Amoco Procyon and in one bite, the group has brought together a number of extant (but underutilized) innovations to create what is, in total, a radical as well as appealing prototype, one they hope will move into construction within the year. Maybe could add some roll control that way wth a wand both sides, sort of like SCAT but put together for ailerons..




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