Building a V22 Osprey - Part 1 

It’s so awesome!

That is because your code is magic, I want to try it my Winderstal wobble-copter

@@magicalpencil Design by David?

Why are we here in this life ?Why do we die? What will happen to us after death ?

@@nevergiveup5939 Wow, a spambot posting existential questions? Now that's new.

Tom really is a bit of a genius.

Same here I figured the momentum would stop it from being able to be controlled this way. That's a genius way to go about it.

As a mechanic I know engine management looks at the crank signal and can also tell when it speeds up or slows down. A 4 inline cilinder fires every 180 degrees. Spark or diesel fuel injection is done with similar timing needed for running a brushless motor. With brushless you need very fast coil switching with correct timing before or after each permanent magnet. So many times per second and within a degree of rotation accuracy, it's mind boggling fast for a human

@@Fantaman900 This is what I'm sayin', it's incredible it actually works.

Better make sure the motors are sized up a bit along with the voltage and current controllers, because constant rapid changes like that are an express train to burned out electronics.

What kind of engineer do you want to be?

heyo, same situation here :) Now 20 and in the first semester for electrical engineering. Stantons videos definetly are a good example of trial and error mixed with a good feeling and proper work.

@@DeadlyWarrior45 im studying to become a mechanical engineer, and I’m planning on going civil❤️

@@raphaelwelti6632 nice❤️ first year for me too. Definitely challenging but it’s good don’t you think?

@@benji376 well it's definitely not easy... But I think worth the effort. Else I wouldn't do it

Bad obsession motorsport gives it a good run

Stuf made here is cool too ;)

Hey I sub to both of you guys very kind of you to complement him , both your channels are amazing, thank you to both of you

it’s practically organic! most elegant.

Came here to say the same thing! One possible way of making it even more elegant, would be to replace the pivot with a flexible hinge that has bending-torsion coupling; or better yet, if you make your own composite blades you could bake that coupling into the fiber orientation. Not sure itd be easy to obtain the required amplitude in such a way though.

@@eelcohoogendoorn8044 I'm guessing you already have a degree in civil engineering? With the complicating dynamic construction idea? You should start your own RU-vid channel 😉

It reminds me of the hacks people in C64 demoscene did :) Like the computer supported 8 sprites but people changed the memory while the sprite chip was drawing them to reuse them on the same screen many times :)

@@jamiewatkins4178 Its not a very original idea; torsion-bending coupling and how that relates to fiber layup is already something you need to pay attention to in the design of wind-turbine blades.

You should check out RCTestFlight if you like rc and engineering

@@BenBike love him, he has awesome projects, but I think Tom is more on the engeneering side of things, he thinks a lot outside of the box and his projects are well refined with cool building techniques

@@BenBike Definitely a good recommendation. The multi-element STOL wing design and ekranoplans along with many other projects are pretty cool. Though, I don't think they bring engineering in the RC hobby like Tom Stanton, but this guy's setting the bar so high that it's almost unfair to other channels, so RCTestFlight is definitely still worth checking out :)

I doubt very much that a gasoline engine could be made to do this by itself. That said, it would be almost trivial to introduce the necessary sinusoidal rpm oscillation. Improperly clocked u-joints on driveshafts already do that, for free. All thats needed would be some sort of mechanism to skew them in and out of time.

U joins oscillate their speed twice per revolution, so you’d need to gear up the output by a factor of two. Your u joints would have to be able to handle a hell of a lot of torque.

Wouldn't this mechanism with a chemical engine require either a mechanical system to quickly reverse the direction of the motor's torque many times per second, or a braking system to reduce the speed of the motor? I'm not sure if the former can be practical, and I'd imagine the latter would at best wear down the brakes extremely quickly. Actually, I wonder if you could use special gearing to achieve the effect. I assume the way that the motor works is by rapidly accelerating the motor, to adjust blade pitch one way, and then by letting it naturally decelerate to prevent the blade pitch from going the other way? I think you might be able to accomplish this with spiral / shell gears, like in this video (ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-0wEtyzgnEY8.html) but less extreme. Alternatively, I think an egg-shaped or elliptical pair of gears could work, if the axis of rotation is not in the center of the shape (maybe in a focus of an ellipse?) With a constant motor speed, the driven gear would rapidly accelerate regularly, and then slowly decelerate. This would correspond to a blade pitch that is asymmetric over time and could be used to control the aircraft. I think you could make a design that could (theoretically) work from a constant motor speed. You'll want to have what is basically a manual transmission, but instead of each pair of gears changing the torque/speed by their ratios, you have pairs of shell / spiral-shaped gears with different curves. Oh, and you'd have 4 counter shafts, each with a different shell gear paired to one on the input / output shafts but rotated 90 degrees. Each of these shafts would accelerate the motor (and thus pitch the blades) at different places along the blades' rotation, and thus would correspond to asymmetric lift in different regions to control the aircraft's pitch. There's probably a way to use only 1 counter shaft instead of 4, and bonus points if you can create a continuously variable transmission that's spiral-shaped to change the rate of pitch change. I hope this comment made sense, I dropped out of engineering and learned terms like 'counter shaft' and 'shell gear' just now while searching on wikipedia for how to explain my idea.

You’d loose some efficiency right off the bat with the conversion, but you could fly-by-wire the main rotor in the most literal way: converting the gas to electricity and then electrically modulating the motor, but I think that whole assembly would certainly loose on complexity and cost to a standard helicopter

@@luelou8464 hah, yeah they would for sure. I wasnt really thinking about in a practical way, but just from a "this is a way it could be done" way. Yeah there would be challenges there for sure, probably not worth it given that the swash plate mechanism already exists. Electric motors just have so much better response rates, so its possible to cheat (in an honestly brilliant way, I'm baffled that this works at all, especially with commercially available speed controllers, and not some custom solution)

Bro above me forgot to switch to the right RU-vidr scam account

How

Ceramic bearings are always better in performance and endurance. And the way the three bearings are each pressing on one point of each bearing lends itself to using a ceramic bearing and realizing the advantages thereof.

His complaints about current ‘tilt rotor’ RCs are all spot on.

It's not his design. Take a look at the previous video on his channel, that he refers to.

Thanks

another copy-paste scam comment..

Who are you

@@wojtekpolska1013 i understand that this is some copy paste bs but in what way is it a scam