foils

Hi, i am currently working on a prototype/proof of concept of an hydrofoils rc boat, my goal with this prototype is "only" to succed at making it fly. So for my design i went for a main wing an a small stabilizer . It's my first expérience with hydrofoils so i think that i made some big mistakes...

So--I've been stirring up some trouble here recently on a few threads--Boat suspension and Stepped hulls- 50 knots plus. Why?, specifically. Already a few irons in the fire, perhaps. Some may have noticed. Just look for copious and really long posts, going all over the place. What on earth is...

Hi, is there anyone out there skilled in using design software for boats, or that has specific design capability for power catamarans. I have a very good alluminium boat builder but their designs are dated and i want to update them with: A) A Foil B) just a range of improvements on their...

Hi, I'm prototyping a vastly improved LARS ( launch and recovery system), a set of launching wheels for small RIBs employing high volume beach wheels placed precisely (and adjustably) at the balance point of the boat. (Along with some other enabling technologies I'm not at liberty to discuss)...

Interesting article about introduction of foils on racing Moths back in the 1970's When aircraft technology was applied to a boat, the shock reverberated around the world https://www.abc.net.au/news/2019-11-30/how-moth-class-hydrofoil-sailing-boats-rocked-americas-cup/11748064

Hello to everyone, I'm new in this forum. I have a project in mind that will see light in June of this year. It's about putting foils in a Mini 6.50 I have almost everything fitted, sponsor, money, place, geometry of the foil, internal structure ... but ... I'm a little lost in the subject of...

I don't mean adding some to an existing one! I want to know if I was reasonable wanting to design somthing in the likes of that or if I was just hocked by the hypetrain? Would foils be of any significance on 1200kgish boat of only 2,55 beam? Would they produce enouth righting moment that the...

The main foil on the fullsize Wolf will retract flush with the bottom to make it easier and safer to beach the boat.

Hello everyone, I am currently trying to understand the new design of the curved daggerboards for the the new ClubSwan 125 to be launched in 2019 designed by JuanK Studio. I would really apreciate if someone could share some knowledge or opinion about this curved daggerboards which somehow can...

The Ultime Tri was recently relaunched. So far I haven't found any description of her new foils. Refit Complete For Francis Joyon And Idec Sport Max Tri http://www.pressure-drop.us/forums/showthread.php?4922-Refit-Complete-For-Francis-Joyon-And-Idec-Sport-Max-Tri&p=48719#post48719 A FRESH NEW...

This is the actual pattern I made for the sailmaker and which I couldn't resist putting on the boat just to see how it looks. It's 1900 sq.in(13.2 sq.ft.) and good up to about a 10mph wind(8.7knots) as long as the boat is equipped with a Trapeze Power Ballast System and is foiling. The rotating...

These are more pictures of the boat with no writing superimposed on the picture. These were taken on her first day of full flying foiling-only her fourth day of sailing-with only about 2 hours testing before foiling! Much more to come... These pictures were taken in a wind measured at 5mph(not...

These are more pictures of the boat with no writing superimposed on the picture. These were taken on her first day of full flying foiling-only her fourth day of sailing-with only about 2 hours testing before foiling! Much more to come... These pictures were taken in a wind measured at 5mph(not...

These are more pictures of the boat with no writing superimposed on the picture. These were taken on her first day of full flying foiling-only her fourth day of sailing-with only about 2 hours testing before foiling! Much more to come... These pictures were taken in a wind measured at 5mph(not...

Here are shots of the boat foiling and a couple showing Dan Burke and me with the boat after sailing.

This shows the tip of the UptiP ama foil with the i-flap breaching the surface.

The explanation for what you see here is in the thread in post 1414-a dynamic pitch-up caused by an abrupt rudder movement. I think it's a cool picture of the hulls jumping clear of the water...

Design number 1 Light enough to handle on shore by myself, fast enough to hassle a Laser on a broad reach and hang in upwind. If you can handle a Laser in a blow you will find this a dream to sail. Sail it next to another "classic boat" and make the other one look silly and...

The whale through millions of years have developed scalloped leading edges on their flippers. It has been shown in wind tunnel tests that scalloped edges produce vortices that break up laminar flow so that lift is better and turning faster for scalloped edges versus straight or curved edges.