Excellent progress. Great graphics and explanations in this video. A summer sailing series would be cool. Looking forward to seeing you dive in to Ardupilot details explaining how it's setup and sails.
Prop designs are some of the military's most classified items. Especially on subs if a company made a super effecient prop it woukd be taken and classified and never be comercial
What are the odds that you can hook up ardupilot to control an auto helm tiller on a sailboat. Seems like it would be a pretty easy implementation if we can feed in info from a windvane, additional to the magnetic heading the tillerpilot has.
“Do you know how to sail? I don’t” -forgets he has me to ask. Fr bro if you need any help with sailboat stuff just ask! You already have me on a chat in instagram 😂
so to tack down wind instead of up wind it needs to pull a 270 degree turn, that circle with the wind pushing you will make you lose alot of ground imo
Dear Channel I just found. Dude! Great, interesting content. Now. WTH man! Where are the other 2 videos! You underestimate the thirst of the 3:00 AM I can't sleep crowd.
65 years ago I build sailboats that had walnuts for the shell, 2 toothpicks for mast, and clear plastic for the sail, and it was held together with model cement. After a rain there mud poodles that I could float the boats. They were good with the wind!
9:41 silicone isn't what you want for this application. 3M 4200 is generally what's used for above the water line sealing like this. 5200 would also work but it's unnecessarily permanent.
As someone with both sailing experience and an aerospace engineering degree, I feel you did a fantastic job explaining what you’ve done here and did most of the design changes that came to my mind from your alpha model. I have to say, fabric sails are so much more satisfying than rigid wing but I see why you would avoid them here.
So, just as a point of curiosity, since you did a wingsail that looked like a symmetric wing... Why not go with a worsley wingsail since that will optimize lift automatically/mechanically and the only time the sail would need electricity would by when you wanted to adjusted the 'throttle'?
Sailing boats naturally turn up wind when they lean over because the thrust from the sail is now beside the hull centreline and the keel(drag) is on the opposite side of the centreline.
Sorry for annoying you with the hydrophobic propeller in the contest lol, I figured you'd talk about surface area to put all the goons requesting it in place. Was happy to see you include it anyways!
One of the most advances autonomous sea drones use a similar sailing approach. They are quite impressive and indestructible to any weather condition. The best way to move without using electric power (beyond electronics which it use PV for that).
I bought myself an RC sailboat last summer, and it is a lot of fun. Honestly, I want to do an autonomous boat build, and was thinking of a motorized catamaran design, but now I kind of want to do a sailboat instead. Maybe I should cut my teeth on something more basic first.
Good to see the progress with this iteration. You'll significantly improve upwind performance if you give the keel a (symmetrical) airfoil shape rather than being a faired plank. The rudder would benefit from this too, it then wouldn't need to be so big and would create less drag. The rudder will usually be at some angle to the centreline while sailing, and it needs to create lateral 'lift' to hold the course. Having a flat rudder means it will need more angle and create more drag, like trying to fly with a flat wing.
