After just posting about the commercial Quadrofoil
I thought I should also start a thread on the non-commercial Hydrofoil GF09,
built by Markus Henne at the University Rapperswil in Switzerland:
View attachment 1
Also impressive is the YouTube video:
[youtube]jh_RhkejWLw[/youtube]
I like it even more than the Quadrofoil, because of it's very efficient energy use, and the simplicity and elegance of the build.
Unfortunately there is not too much to be found online in English about this beautiful little project.
Here are some
Technical details:
And here some links:
Here another picture from the doc:
And one that shows the Energy vs Speed Graph:
You can see nicely how the "Energy consumption" goes up to 1.200W to get the boat out of the water,
then drops to about 600W at 16 Km/h (10 mph)
One fine day, when I can find enough time between work and my other hobbies,
I will try to build one like this. I started to get interested in electric vehicles last winter,
and wondered if I should start with a boat (the lake is right in front of the door) or a bike.
I figured I would get a quicker success and more use out of the bike, so that's what I did over the summer.
Maybe next summer I will try sth like this boat
Cheers,
Ulli
(I hope this has not been posted here before, but I couldn't find it with a couple of searches)
I thought I should also start a thread on the non-commercial Hydrofoil GF09,
built by Markus Henne at the University Rapperswil in Switzerland:
View attachment 1
Also impressive is the YouTube video:
[youtube]jh_RhkejWLw[/youtube]
I like it even more than the Quadrofoil, because of it's very efficient energy use, and the simplicity and elegance of the build.
Unfortunately there is not too much to be found online in English about this beautiful little project.
Here are some
Technical details:
- Lightweight Sandwich-constructions for main hull and Swimmers
- Dimensions: L x W: 3500 mm x 1800 mm
- Weight (with Batteries): ~ 37 kg (81 pounds)
- Motor: from RC Model Plane max. 1,8 kW
- Batteries: Lithium-Ion-Polymer Capacity 10 Ah
- Max Speed: 28 km/h
- Energy consumption: ~500W at 17 km/h / 1200W at 25km/h (15.5 mph) !
And here some links:
- Google does not find much and most of it is in German
- Here is the place where I found themost helpful links
- e.g. this PDF that has a detailed Project Description
- again in German only, sorry :-( but it has many pictures that should help understand some details.
Here another picture from the doc:
And one that shows the Energy vs Speed Graph:
You can see nicely how the "Energy consumption" goes up to 1.200W to get the boat out of the water,
then drops to about 600W at 16 Km/h (10 mph)
One fine day, when I can find enough time between work and my other hobbies,
I will try to build one like this. I started to get interested in electric vehicles last winter,
and wondered if I should start with a boat (the lake is right in front of the door) or a bike.
I figured I would get a quicker success and more use out of the bike, so that's what I did over the summer.
Maybe next summer I will try sth like this boat
Cheers,
Ulli
(I hope this has not been posted here before, but I couldn't find it with a couple of searches)