Well another big thing is quite literally the rule of 3s. Lots of things function better, preform better, and look better with the rule of 3.
@coffeetablesex Says:
using squares and squares rotated 45 degrees on a chart with curves is fucking evil
@nairel.mp4 Says:
2 are too few 4 are too many
@cepheialderamin Says:
As an aerospace engineer, this specific kind of graphs of any parameter is haunting me every day. They say "We don't need to digitize them, the physics didn't change. What do you mean you can't read the cursed scan of ink drawn graphs on 60-year-old millimeter paper?"
@geraltofrivia6793 Says:
As I understand this graph 0:41, it's function of Cp (pressure coefficient) depending on lambda (span ratio of blade) with certain blades number. The horizontal axes doesn't show the speed of rotation as it's said in video!
@The_Invisible_Hand Says:
Nuclear/gas/hydro: "Look what they need to mimic a fraction of our power."
@megan00b8 Says:
Technically you could improve the physics of the one bladed turbine to be similar to three by using 2 spaced counterweights.
@RajveerJadhav-w1t Says:
That's why Indian houses have 3 bladed fans 😭🐧
@AliMonsterTV Says:
It's not a mill, it's not bloody milling anything. Wind turbine, because technically correct is the best kind of correct (and windmills do not work that way).
@Grim_Beard Says:
This is a good answer from the perspective of science and engineering. However, the Catholic answer is that it represents the trinity. ;-)
@keensoundguy6637 Says:
If wind turbines extract energy from the wind, how many turbines does it take to stop the wind? (The question is actually meant to imply a different question, but it's ok if you don't recognize it.)
@lennyjames8457 Says:
Why do i feel so viscerally annoyed when people call wind TURBINES ‘windMILLS’ they’re TURBINES THEY DONT MILL ANYTHING
@rik_fransens Says:
I had to slow down the speed of play to 90% to make it a more agreeable viewing experience. Tried 85% but then the voice starts to distort too much 😢
Why such a rush? At this speed, information can barely sink in. Otherwise very nice content!
@krkrbbr Says:
Because one is two little and five is two many
@fleecybunni Says:
TLDW: it's the minimum number of blades that doesn't result in equal wind forces cancelling the blade movement.
@GalaxyViking Says:
windmills make flour not power..
@JohnSmith-pn2vl Says:
wind turbines are NOT noisy
@ImKinoNichtSabbeln Says:
Windmills produce flour, or pump water, are old technology, and ususlly have 4 or more blades.
Wind turbines produce electricity, are new technology, and have 3 blades.
Only (A) small children who do not understand the difference, or (B) like-minded (i.e. mentally incapable) adults, or (C) vile, inflammatorily adults who want to meddle thevwaters to inflame others would mix-up both terms.
Or (D) those of us, who just f*cking don't care about parroting inflammatorily language just out of being ignorant or lazy.
Or (E) those of us, who want to signal that they side with an individual that is dumb enough to don't care for the difference, and perhaps don't even know, and definitely doesn't care for anything or is ruthless enough to be incitive no matter what, because not caring for anything and anyone but himself, and thus has become unique source of inflammatorily hate speech, just to serve himself.
Henry is
* no small chold (not A),
* capable to gradp the difference (not B),
* appears to be not vile (not C),
* usually cares for details (nof D),
which deduces that E is the bitter, surprising, and sad reason for this choice of words.
And they choice of words cannot be random, considering his efforts to explaini the correct ways to depict the moon, later.
Only pro:
I reconstructed the forgotten reason why I unfollowed minute physics, some time ago, obviously since this video.
@adzowndu4492 Says:
2 is stupid 4 is to expensive
@MuttRazzle Says:
Just drove across the Great Plains, and was a little worried I'd be so mesmerized watching the wind farms that I'd drive right off of I-70.
@PaulJordan318 Says:
This is pretty trippy when you’re hi🌳🚬👌🏼, so I’m gonna watch this again when I go to McDonald’s for breakfast. For the future you gotta slow down when you’re talking.
@pappyfiddle Says:
Reason #2 doesn't compute
@GordonMcDonough Says:
But gear boxes, huge, low RPM wind turbines are geared up to turn generators at their happy speeds, while old fashioned smaller water windmills, with many blades turning at high RPM are geared way down to operate their slow pitcher pumps. I suppose it is all about torque.
@Scratch_Gobo Says:
Which kills the fewest birds? I hear that's more a factor of blade length, though.
@punksweeper4678 Says:
The first time I saw a two bladed wind mill I literally thought to myself it doesnt look right
@Knutt7 Says:
I work with and inside of wind turbines. 3 Blades gives just enough space to work inside of the nacelle aswell, if there would be 4 or maybe 5, there wouldnt be much more space to work on the pitch system and the hydraulics
@LamirLakantry Says:
But why are the old timey windmills like the one Don Quixotes fights, so much bulkier in the blades? I'm guessing it's to do with material limitations.
@nootsen5522 Says:
But why don't wind turbines incorporate winglets like planes?
@mandolablanard3987 Says:
I saw a video a long time ago that incorporated the shape of owl feathers to jet turbine fans and it actually succeeded in dampening the volume by a considerable amount. I’m sure you know where I’m going with this.
I understand it’d cost more to make owl feather shaped fan blades for windmills, and I do understand that making windmills quiet isn’t the highest priority since they are often build far away from society.
However, if I wanted to get a commercial sized windmill on my property, would it be logical having the owl feather shaped windmill blades to dampen the noise?
Assume all costs are a non factor.
If that were the case, if they started manufacturing owl feather shaped blades, they could be more implemented into society
Just a thought
@jamahlmustow8371 Says:
What if the wind turbine had a 2nd set of smaller blades?
@Zuignap Says:
Can you look at the amount of electricity it costs to build and maintain a wind turbine vs the amount it creates? (I'd also take emissions during creation and build costs into account if you want a truer comparisson)
@BrianStDenis-pj1tq Says:
The problem with your final segment on clean energy is that it was misleading and misguided. The chart showing a large increase in green energy (or whatever you named it) only looks impressive if you do not show the rise in power needs over the same time. All the best rivers have been dammed and the best wind locations have wind farms already. The increase in power needs per year easily outstrips all green energy sources many times over. Even if England covered the entire country in wind farms, that won't even keep up with one year's increased power needs.
@ZartaxtheWise Says:
Cound you do a similar vid on plane engines? We have small props. with 2 blades, turbo-props which usually have 6 or thereabout and then jet turbines which have... alot.
@cdominguez95 Says:
If I build a 5-bladed windmill, then I'll have 5 good reasons for it. Thus, the more blades, the better the mill
@bitsnail Says:
The music makes it almost impossible for me to hear you, just friendly feedback since it seems like a great video. (I'm a bit hearing impaired, so the layered sounds makes it hard to make out the words.)
@dogfromotgw Says:
havent watched: my guess is because 2 blades wouldnt spin very well and 5 blades would spin ok but maybe them being heavy would make it less efficient but more importantly youd get less bang for your buck because 3 is cheaper than 5
edit: i was mostly right. didnt consider the aesthetic aspect. said "wouldnt spin very well" when i should have said "breaks more easily." said "heavy" when i more meant to address the drag it creates
thanks for reading guys this has been a fun brain exercise for me. ominous dog from gregory's dream sequence in episode 9 of over the garden wall signing off
@youfive1000 Says:
Talk faster, please. The art of communication is dependent on the listener to absorb and process information. The modern word of speed communication is nothing more than BS. Stopped watching your video……
@phyrhfbr1819 Says:
what about those 0 blade windmills?
@klararohrl3305 Says:
Any time, people complain about the "noisiness" of wind turbines, I'm like "Dude! Have you ever heard a car?!"
At least for me the engineers really hit the jackpot. I find them elegant and aesthetic to look at. I find it calming, nearly meditative to watch them when they're turning at their "leisurely" speed. I even like the sound they make.
@Jyno_Syd Says:
Did you use the Imperial Star Destroyer engine sound for the windmill? LOL
@RealBuyNex Says:
Three shall be the number of blades thou shalt build, and the number of the blades shall be three. Four shalt thou not build, neither build thou two, excepting that thou then proceed to three. Five is right out
@hgh468 Says:
I thought it's because we want to produce three-phase power.
@arthasmenethil4399 Says:
Also, with three-bladed windmills, you could theoretically build a hexa-/bestagon, which makes them superior by default
@mariuszwisla3230 Says:
the same issue is with even number of asynchronically rotating wheels in a trolley, as each can rotate on its own, or differently to other wheels
it means you can't push trolley straight forward, because it's next to impossible to push it exactly straight forward, and so rear wheels create a drag sidesways immediately
it's not a fancy, or oddity that we create vehicles with 3 wheels, ot chairs with 3 legs
@steve1978ger Says:
A case could probably made for five blade turbines, when grid stability and efficiency at lower wind speed were to be considered more important?
@simanova837 Says:
Please speak faster, so you can get a 3:59min video.
@roseymalino9855 Says:
The background racket makes this a tough listen.
@butsgalore Says:
0:57 That graph makes me wonder if there is a number of blades that is not a natural number that has a higher efficiency than 3 blades, mathematically on that specific graph anyway. As in: take only the peak efficiencies of every whole number turbine and plot the intermediary results. If you can make a 1.5 factorial then a non integer amount of blades is trivial, right?
Would 2.8 blades work better than 3? or 3 and 1/3 blades?
@prosamis Says:
Iirc, at much smaller scales, wind turbines can function "better" with more blades, but wind turbine power output is abysmal at small scales. They *need* to be huge
@brackcycle9056 Says:
If you want the public to accept windturbines STOP CALLING THEM BLADES ( blades is from aviation, & machismo engineering) . Blades connects to weapons, stabbing, blood, the film Psycho etc) CALL THEM SAILS , connects to beautiful boats crossing a lake on a sunny day, with ripples on the shore, to wind surfing & holidays , tall ships with sailors climbing the rigging
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