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@richarddevaottien7724

2 жыл бұрын

The illustration was mistakenly a rudder foil, not a wing foil. I hope mistakes like this aren't incorporated into design.

I'm so glad to see this, and so thoughtfully designed to avoid the few negative aspects of foils. I always thought a cat would be the best to design with foils. Bravo Aquila, I look forward to being inspired.

Thank you Lee!

Great design. Thanks!

I've only viewed a vessel that would fit this category a couple of times in my life . One vessel had a device that raised and lowered the outboard motor quickly so as to keep the prop below the surface of the water . There was a pickup sensor / follower in the water that sensed the ride height and therefore the raising and lowering of it's outboard motor was very accurate . This linear lifting device was the same thing that can be seen on small construction equipment that's being used to carry an auger to drill round holes in the ground . In that particular case the 2 linear lift devices were strong enough to lift the entire weight of that construction equipment and probably more .

It's extremely impressive engineering. Wonder if they could do a Catamaran with an Electric Motor powered by Solar with a Hydrofoil.

It would be cool if you put some outboards on your 44 with the foil. 35knts on that beast would be amazing!

Well done, we'll narrated. Was always thinking fixed foils with a maximum flight speed and what the speed would be compared to the angle of attack, positioning important for you as the weight 1/3 to the rear which makes perfect sense

Perfect boat. Where can I see one in Holland?

Wow this is amazing. Lex, and whole Aquila team - I truly appreciate your work on this tech, as my next boat will be a one which uses a foil. Do you plan on using foil on your other models?

@aquilaboats

2 жыл бұрын

We certainly are! Be sure to reach out to us and discuss options on which models support the Aquila Hydroglide system!

The biggest problem I see with most foil vessel designs, is that the way they are designed is that they will obviously catch, hit, or be interfered with by just about any floating object, such as lobster or crayfish buoys, floating debris, seaweed, or even marine life. I don't know how things are wherever you are, but as a former lobsterman from here in the Northeast USA, I can tell you that foil design just would not work around here, for the reasons I had mentioned. As for a solution, I would suggest using four inverted V, swept wing shaped lifting foils, with each mounted to a single retractable strut on each corner of the hull.

@miktoh

4 жыл бұрын

Good take on this matter! I have been a boater for 22 years and there are always floating debris out at sea like big plastic bags, ropes etc....especially on a busy waterways where the traffic are heavy, common popular areas used by many boats cruising or fishing.

@milessmith589

3 жыл бұрын

The cat already has bulbous bows below the waterline. This is the 100th one built & no reviews anywhere of any issues you theorise may occur. Sailers really don't like innovation - it's scary, something new that gives 30%+ file saving, so irrespective of your postulations, it's gonna happen 🤔

@shirleymae30

3 жыл бұрын

@@milessmith589 So you don't believe that floating objects such as ropes, lobster and crab pot buoys, logs, or other floating marine debris cab be a hinderance to foil borne vessels ?. Maybe you ought to do a bit of research, before commenting on things, that you obviously know nothing about.

@milessmith589

3 жыл бұрын

@@shirleymae30 As per my original post Aquila already runs with below the water front bulbous bows (well known to be a debris magnet). Anyhow the company has sold over 100 hulls to-date & with the application of this innovation giving saving on fule costs of such magnitude the market will decide what will & will not succeed - not the opinions of folks who can't handle other folks having differing opinions. That's one of the reasons why capitalism works, especially well in a market where purchases are made with disposable income that can be spent where ever the purchaser chooses 🤗

@shirleymae30

3 жыл бұрын

@@milessmith589 The bulbous bow is not an issue, i was commenting on foil designs in general, and how most foil designs could be designed to allow debris to pass by or thru, without damage or entanglement.

So the foil is lower than the hulls? So dry beaching it is no longer possible?

So you mentioned there is no wake?? The last shot taken from the air on this very video shows just a regular wake as any other boat ? Not sure what you meant at the beginning of the video but this last shot definitely disprove it. On another note. I love the hydrofoil system and is amazing how much you say you can improve the fuel consumption!! Kudos for that

Open ocean performance...let’s say one goes from Oahu to Molokai that’s East heading in the tropics ,of course, and the trades are blowing 15 to 20 miles an hour,northeast. do you recommend getting your cat to foil? Or does one plays conservative, drops the speed and crawls along to Molokai?

Interested to know why dynamics of the foil contribute to its suitability for lower speed efficiencies

@aquilaboats

9 ай бұрын

Hi Noah, an apt question. In addition to greater fuel efficiency, the foils also provide a smoother ride by making you fly higher on the water. Essentially, less fighting through waves + easier ride = increased efficiency and fuel savings. You can learn more here: bit.ly/48prvKF

How does the induced drag at low speed, long range cruising speeds of 8 knots or so, affect the long range performance. I see the benefit at higher speeds, but is there a penalty at low speeds?

I follow the Aquila Evolution very closely. You have very smart designed boats. To see this hydrofoil in more or all your boats, it must be expected, and very exciting. I am concerned about the foil being lower than the keel. Any collission with debris or sticking up rock or obstacle, would rip the foil out with a good part of the keel, and then the boat would be lost. I would LOVE to have a hydrofoil for a multitude of reasons, stabilization, speed and less fuel consumption among them . but I cannot risk boat and life for a hydrofoil accident. Are you planning on some slightly higher than the keel foils(with a draft of about 3' in your cats should not be hard), and if so, could you post them please ? it would definitely make you the leaders in Cat design.

Can a foil system be used for larger, slower catamarans, To reduce drag?

@It-b-Blair

3 жыл бұрын

The efficiency in getting the vessel up to speed may not make it practical. Design depending, foils can impart greater drag and inhibit vessels from attaining foiling speeds.

Could I order a 60 or 70 with hydrofoils and electric jet propulsion? I'm looking to make a super high end eco electric high tech cat or trimaran

Lex Raas seems to be a pretty normal, nice guy.

Is that central vane necessary to achieve the desired lift?

@aquilaboats

2 ай бұрын

Great question! You can learn more about the hydrofoils here: bit.ly/48prvKF

@Kurzeyn1218

2 ай бұрын

The central vane isn't mentioned but I suppose it's purpose is to reinforce the wing.

Wondering if the hydrofoil decreases efficiency at lower speeds?

@Wingnut353

2 жыл бұрын

Probably not... since any lift it is providing is still pushing the draggy displacement hull out of the water a little and the drag of the foil is probably much much less than the main hulls themselves so.. negligible.

Hi... would that kind of foil be good for 80 feet power catamaran?

@andys4971

3 жыл бұрын

Technically yes but you would need to get that beast up to a really high speed to make use of the foil. It’s possible but not likely to see any time soon

@Wingnut353

2 жыл бұрын

@@andys4971 Something that large might have more than one foil anyway.... probably two or three.

Why haven't foils been used if they;ve been around for 80 years?

Different from the hyuscat system used by Stealth Yachts how?

@Wingnut353

2 жыл бұрын

This appears to be composite and all the images I can find of the hyuscat boats are aluminum or stainless foils but built and setup identically to this.... also these guys mention testing this on a RIB boat in the past so maybe they licensed it to Hyuscat or vice versa.

@drieslaas8664

2 жыл бұрын

@@Wingnut353 the hysucat system is much older. This just seems to be an updated version of hysucat. I do wish they would give credit to Dr Hoppe, the creator of hysucat.

@remkojerphanion4686

2 жыл бұрын

@@drieslaas8664 I agree.

I would rather have a Candela C8.

I don’t know how it’s reinforced inside the hull or attached but it doesn’t seem like there will be enough structural integrity to hold the foil in place without cracks or eventual structural failure. The stresses under power must be tremendous. Awesome idea but I don’t think it’s a fully developed tech in this application. I doubt it will be stable enough to last the life of the boat or even a short period of time.

@timmcintyre7992

2 жыл бұрын

The foils are reinforced with the correct high density foams, carbon and kevlar combinations. These are correctly staggered out over a large area of the hull. This disperses the load evenly out through the hull, to the engineered specs. This is constructed using pre-preg or infusion and built as one into the boat on the mould. Pretty basic stuff in the advanced composites world. Have a look at McConaghy Boats. They are masters of advanced composites.

HySuCat

Looks like a sandbar/rock waiting around every corner to rip this thing right out from under the boat. That would be no fun.

This boat isn't innovative, and it certainly isn't your discovery or invention, in fact, it's barely an evolutionary improvement of past marine foiling systems. It's a knockoff of the Hysucat & Hysucraft designs from the early 1980's. Nice try. You're being a bit disingenuous by taking credit don't you think? Still, it's a fairly decent design even for today given the R&D which has been ongoing for the last four decades.