HYDROFOIL Flying Boat | INAV Autopilot Stabilized

This summer I saw some crazy hydrofoil kitesurfers and thought that was too cool. So I built my own, 3D printed, electronically stabilized electric hydrofoil RC boat.
Although I know a lot about aircraft design, this was still a challenge and I learned a lot.
INAV Flight Control software: github.com/iNa...
Onshape Hydrofoil Project: cad.onshape.co...
Technical Details:
Battery: LiPo 6S, 350mAh (good for 5-10min)
Motor/Thruster: amzn.to/3kHLJbg
INAV Board: F405 WING
Controller: KISS 32A (www.flyduino.n...)
Music in this video:
Royalty Free Music from Bensound.com
„Retro soul“
„All That“
„Happy Rock“
Want to send me something? :D
Benjamin Kelm
Heidestr. 7
32756 Detmold
DISCLAIMER:
This video is purely for entertainment value, any and all replications of any experiments, projects, and creations or similar are the sole legal responsibility of the person(s) involved in replicating them. I can not be liable for any information or misinformation, wrongful use, damage to personal property, death or any circumstances that result from replication of any projects seen.
#hydrofoil #experimental #drone #flyingboat #tragflächenboot

[@rctestflight]

Amazing!

[@BenjaminKelm]

Thanks Daniel! Let me know when you’re visiting Germany, so we can meet up!

[@kettch42]

@@BenjaminKelm He's gonna convince you to use ardupilot instead of inav.

[@zecagold]

The fishing line is killing me. Nice to see you Ben ;)

[@BenjaminKelm]

Haha, thank you Zeca!! Use what you have!

[@gaius_enceladus]

Great stuff! Looks like a lot of fun! Keep up the good work!

[@YohanHadji]

This is really cool! Can't wait to see the full scale version :))

[@AerialWaviator]

Excellent project. It works much better than I'd initially expected. To simplify the design and reduce the number of servos, you might try a pitcheron style wing. The other wing could then be completely fixed, without servos. Keeping servos dry is a real challenge. Human-scale foil boards use weight shifting for control. Not sure if this is possible for scale model. Having a motor in the upper rescue boat would make testing less frigid, but understand it's extra weight and complexity. Maybe a secondary tug boat on standby would be useful. (or access to indoor swimming pool, particularly in winter)

[@BenjaminKelm]

Hey, thank you for your comment! Indeed the aileron is not as effective as a rudder would be (because of the mass distribution) If I revisit this I will change this ;) Tug boat is a great idea 😁

[@alfredspijkerman]

Great project. Hydrofoils are indeed very efficient but control is a real pain! Another aspect you might not have thought about is that the lifting force depends on water depth too. Actually efficiency is optimal for 2-3x cord of the wing, with less water depth efficiency drops significantly. It amazes me that you got this to work with such simple and cost effective stuff. Actuators maybe above water and mechanically transfer to wingtips. Great job, extremely well done. This is really not easy.

[@BenjaminKelm]

Thank you Alfred, I really had to tune the system a lot before effectiveness of the control surfaces was enough. If I had time for a second design, there'd be a lot of things I'd change. Tip actuators being one of them.

[@cullenfluffyjennings]

This is amazing. I am really impressed you got this to all work. I have been working on trying to get INav to control a model foil boat I designed. Mine does not work but glad to send photos. I have been working on the model to try and get it working there then move it up to help stabilize a kiteboard foil or eFoil for riding. I have done a bit of work on looking at ways to track the higher above water and feed that in as an altitude to iNav. Anyways, love your project, I am very impressed, and would love to learn more about including trying to build it myself.

[@BenjaminKelm]

Happy to hear that you had the same idea! Would love to see some photos and help where I can ;) You can reach me sending an email to Benjamin.Kelm.dtATgmail.com

[@FPVrare]

deng! imagine it has gps and RTH for navigation and in bigger scale like e-foil game changer!!! youve got a sub!

[@user-763ssc]

Don't let Noal Edmunds see this iii

[@yosiska]

Maybe you should move the motor above the wings and make the wings with less area (smaller in width and span)

[@MrGunnaras]

Hej cool project. i,m familliar with inav from a quad copter but have never thought this would be achieable with a hydrofoil. i,m trying the same project just with an arduino and a trimaran hull(RC). What board did you use? maybe i could ditch the arduino and skip few steps :p Also did you manage to get the ladar working?

[@BenjaminKelm]

Unfortunately Ice not touched the project again, too many other ideas 🤓

[@intuitiveengineering3277]

Hey ben! I really like the project! I found some inspiration from you to help keep me motivated on an active hydrofoil I am building of my own! I think you would enjoy some of the videos on my channel! Cheers! p.s. the swim of shame is inevitable with prototype boats!

[@OliFPV]

Sehr nice, haste gut gebaut etwas mit Yaw muss irgendwie noch ran bauen, nur Roll ist komisch zu steuern, fast wie ein Wing mit Pitch Nase hoch ziehen bei Roll Kurven 🤙🍀 liebe Grüße 💚

[@OliFPV]

Abo bleibt 👍

[@BenjaminKelm]

Jauu, hab ich dann auch gemerkt ;) Effizienter ist es so (wie bei der Neigetechnik beim Zug), aber ein "Seitenruder" wäre auch für die Steuerbarkeit besser.

[@robertsmith873]

This is AMAZING! I just got a 3 printer and want to try to make this, can I please contact you to ask questions and get advice?

[@BenjaminKelm]

Sure, feel free to contact me.

[@greggost6493]

Aber wo genau befindet sich den Akku dieses Gerätes??

[@BenjaminKelm]

Im Rumpf des Bootes, da wo die Elektronik zu finden ist ;)

[@paulbizard3493]

Very nice. But then you built an underwater airplane glued to a boat. A bit far-fetched to my opinion. But very cool and I suppose your had a lot of fun.

[@BenjaminKelm]

Haha, thank you for the honest comment. The aim was mainly to check if the hydrofoil can be actively stabilized. That hydrofoils are much more efficient at higher speeds should be clear.

[@master_lox8639]

Deutsch?

[@BenjaminKelm]

Englisch!

[@master_lox8639]

@@BenjaminKelm are you not german? I sounds like :D maybe i am just stupid haha