The Air Cylinder Rocket Test! | MythBusters | Season 4 Episode 24 | Full Episode
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- Опубліковано 8 вер 2024
- Adam and Jamie test the myth known to every high school metal shop teacher: can a cracked valve on a compressed-air cylinder actually blast the tank right through a cinder-block wall?
Using science as a tool, Hollywood special effects experts attempt to debunk rumours, urban legends and popular myths that have captivated the minds of many individuals.
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Unironically, one of the best things of my year has been the uploads of Mythbusters to UA-cam ❤️
Total agree
Was damn Time
@wustenfuchsgaming1226 you'd think whoever owns the episodes now wouldnt wanna miss out on that little bit of youtube money
They were available before, they were deleted!!! Just like the Storm Chasers videos!!
Hope things get better mate.
What a glorious alternate future we missed out on where cars could suffer catastrophic magazine detonations
At least now we can have all-day-long battery fires or building tall fire jets from hydrogen tanks.
Loved Adam's reaction to Jamie's geese joke. 😀
"Was that a joke?! I think that was a joke! [pause] Fascinating!"
24:53 Probably another instance of the infamous producer instigating bad behavior for "better television", like the electric shock Adam got from the golden statue.
feels a bit like it
Yeah, there's genuine Tory moments like the bike jump, and then there's this. Good thing is, most people seem to know it's producer interference, and not Tory being an ass.
Yeah, deafening someone who wasn't expecting to need ear protection is a massive dick move.
The appeal of the show was largely down to the positive dynamic between the hosts - artificial TV 'drama' was not what the audience wanted.
@JMMC1005 i always loved the show for the fact that they seemed genuine. And Adam and Jamie being upfront about not liking each other but putting that aside to work in an amicable and professional way really was one of the things that made it shine
I'd honestly be surprised if they didn't receive a stern warning from their Bomb Squad friends after that - if you're not prepared to be responsible with explosives, the risk you present to the professionals jumps dramatically.
20:54 that's agent walrus's favorite phrase
"It was the lard that did it" /:€
The thing about lawnmower engines is that the grass cutting blades act as the flywheel. The flywheel keeps the engine rotating between ignitions as well as smoothing out the action of the engine. If you take those blades off, you have less to work with than if you used an internal combustion engine from any other application.
The thing about MB is that they're not scientists or engineers, they're entertainers LARPing as scientists - And convincing everyone else that they know what they're doing and their results are valid, too.
@@UnitSe7en they used to do practical effects. One if the requirment for large scale practicals is engineering experience.
That said, you are kinda right. They are entertainers first, actual engineers second. They focus more on flash than they should and it leads to missing simple solutions.
also should they use a 2 Strock engine, another way of doing it would be to use shot gun shells with a lower charge, would take hundreds of them to run an engine, but would be good delivery system. i do think it is possible with some decent engineering
I have been waiting for this episode...
I can't wait for the 22,000 feet drop episode. That is the one I am most excited for.
25:09 u can see that Grant was legit mad. He had his fists closed for a second, but he remembered he was on camera hahaa
F
“Can you feel that?the vaccume is pulling me in”
*”Yep,it sure does suck”
😂
pretty stupid
20:49 Adam's laughter there :))))))
Air Cylinder Rocket and the Blackpowder Motor are two Classic, nice Episode.
20:00 "Calm, steady words from a man who's hoping to launch a gas cylinder into the next county."
Welp, that didn't really age well in hindsight...
?
@@Idiomatick Look up their cannonball accident. An errant shot from a cannon on the bomb range sent the ball through a house and some other stuff almost half a mile away. Thankfully nobody was injured.
It's nonsense that black powder has higher energy density than gasoline. Most people think explosives have higher energy density which is rarely true. It just combusts a lot quicker.
your figures are off. Include the weight of oxygen in the density and the apparent advantage of oxidizerless fuels goes way down.
@@tsm688
That doesn't make them wrong, though. Oxidizer is 'dead mass' when it comes to energy density, but it's part of black powder's composition. The fact that gasoline is stealing its oxidizer from the air is irrelevant unless you're trying to build an engine that runs in space.
Probably they mixed up power density with energy density.
So if you mix gunpowder with fuel the extra air it has on the gunpowder WILL incraese engine power
@@JMMC1005 it is absolutely not "dead mass". Neither gunpowder nor gasoline will do fuck-all without their oxygen.
But the oxygen is counted as part of the weight for gunpowder, and *not* for gasoline. This is an artificial inflation of the numbers in favour of gasoline.
25:12 Love how Grant just storm Tory right away, he knew what was up 😂🤣
They should have added a diverging nozzle to the air cylinders in the first configuration, would have given way more thrust
25:20 As someone with chronic tinnitus, I know that pranks like that are not OK! It can really ruin someone's quality of life! Hearing protection should be taken seriously. Same thing with air horns and whatnot.
Carastrophic failures proven right is easily my favorite brand of MB
instead of the valves into the water they could have had the air pressure firing at a paddle wheel pushing them forward
But this is Mythbusters 🙂
My favourites are the episodes with the hot water heater explosions. I can watch those episodes over and over again and still feel happiness every time!
A few years ago, Richard Hammond did a documentary, "Gunpowder plot, exploding the legend", to see if the explosion would have worked. it was really good, worth a watch. Anyway, I always thought it was in MythBusters wheelhouse, and I cant help wondering how it would have gone if MythBusters had been involved.
He also did a show called Brainiac which was very mythbusters-esque, don't know why I didn't watch more of it at the time.
@@NorrisHistoryCorner Yeah, Science abuse too. I did have a thing for professor miang-li (Rachel Grant).
HAMMONNNNND
Never expected hammond to do explosions
Adam: “Well that didn’t work, so what would it take to blow up Parliament?”
Jamie: “Only one way to find out!” as they board the plane to London.
Tori’s engine looks wheely good
16:00
Engineers at the time had this obsession with a vacuum. The first steam engines also worked on that principle even though high pressure has far more power and doesn't require nearly as good seals.
I think if you'd have gotten the boat on plane before rocketing off, it might have worked better. As we know, water surface friction at low speed is a pain, and speed gets easier once you get past that.
19:42 I wonder how Jamie got that black eye?
Was wondering the same thing
Those block pockets aren't even filled in
29:07 holy shit that joke was dark 😅
I was sweating just seeing Adam on a leather jacket in a beautiful sunny day!😅
After a bridge construction nearby , they had to bring in divers to retrieve oxygen cylinders from mid river .
Apparently someone had the bright idea of taking one ,siiting it in the greased channel of an I beam pointing into the river . Then striking the end off with a sledgehammer , for a diy torpedo. It must have been successful because there were an awful lot of cylinders pulled up by those divers.
14:04 Haha good timing on my parts. 😏 (Building number)
Well, I know someone who has seen an escaped cylinder. Me. Only a small carbon dioxide tank from a pub cellar, but it made it through the door and into the garden, where nobody went near until it was empty.
Regarding the boat they should extend a rudder as far behind the Stearn as possible, say 6 to 8 feet. so that if one cylinder only fires, the boat will not go around in cycles.
Funny. In Spain we can lay the blocks the other way up for a fast light wall, cavity up for filled blocks. Heavy wall.
I recall when Jamie got that black eye, from the hand winch experiment in the superhero episode. I remember wincing!
I just love Adam's reactions and he just cracks me up ! great guys, all of them, Grant's passing was very sad > RIP. Just a great science show !
R.i.p grant.
ah man, @25:10 was brilliant! Tori's expression was golden, he didnt expect that reaction....neither did I. Grant was like, what did you do? looool
Wonder if this episode was done before the release of 007 Die Another Day, coz that was what Pierce Brosnan did in the lab in Cuba chasing Jinx.
Grant: “don’t say anything” as he’s wearing an embarrassing suit.
Editors: puts it in the intro so it’s part of every episode.
DAMNIT my gunpowder pump and injector are clogged again xD
Man i miss this show. Loved this as a teenager
To put the air outlet under water; good idea. To put the air output level with the boat; bad idea. To get some distance/speed you want the boat to stay level with the water instead of the front to come up, the rear will become a big break. Put the air outlet pointing slightly down or use an extra rudder to keep the boat level.
With high pressure cylinders like oxygen tanks the stories of them flying through two walls and being found several hundred yards away are usually when they've been involved in a fire.
Imagine a 3000psi oxygen cylinder thats been slowly brewing in workshop fire thats now overpressured to maybe 5-6K psi when something falls on on it inside the burning building - really conceivable they could get some serious air time.
The incident i remember as kid was a fire in a mechanics workshop - an oxygen bottle flew through the cinderblock wall into the joinery shop next door (leading to burning the joinery shop out to), out the wall of the joinery shop, over a small river into the bottom of someones garden. Total distance maybe 150-200 yards?
They needed to lard up that boat
Bei uns in der schule ist mal eine gasflasche umgefallen. Im fall ist sie mit dem ventil auf eine stuhlkante gefallen, und das ventil ist abgebrochen. Die gasflasche hat richtig stoff gegeben und ist durch zwei wände geflogen.
Isn't an automatic rifle a black powder engine with a high velocity exhaust pipe?
Ehhhhhhhh
Black Powder doesn't really lend itself to this kind of engineering because of fowling, dirt from the burnt powder will collect in the barrel, eventually hardening it the barrel(and therefore and obstructing it) or it would just corrode the metal if not cleaned. Only as modern smokeless powder came around did people start experimenting with self loading firearms, partially because of the higher pressure curves of smokeless powder.
@@comradeurod9805 so it could theoretically run for a few cycles at least, more than they got with the old designs or the modern engine
@@sazogrim7313 to my knowledge we're never made an automatic fire arm that works in the sense as they test here. at least to my knowledge. if you describe an automatic fire arm as an engine the fuel wouldn't an explosive powder. it would be the ammunitions. you load in packets of explosive powder and if you want to refuel you need to do so with those packets, you can't just poor in gunpowder.
it's an intriguing concept to make a proper engine with that in mind. take the second design, the hard out shell of a cartridge could stop the reset till it's all the way reloaded. if you have a way to eject the cartridge at the end that could be the key to making it function. however I suspect we found the easier way to do it before we got to that point.
and as what was said, how long this could run before breaking or exploding is another concern.
"a grain which is 1 /500th of a (*Troy) ounce..." which should NOT to be confused with the ""standard"" Ounce in which case a grain only is approximately 1/437th of an "ounce". Or to put it another way a grain is approximately 1/27th och a Drachm (*dram), which in turn is about 1/16th of an "ounce", which is 1/16th of a Pound, which OF COURSE is 1/14th of a Stone. Ziimples... It's so good to have a """system""" ;)
32:48 I think I don't understand this argument, Adam got overexcited with the design but it was in the spirit of Mythbusters.
How good are the older seasons of mythbusters
I take it they have never played with an office chair and a CO2 fire extinguisher?
also love how they enabled the comments so we get to talk about the show
Haha! 07:09
They showcase those fragile, brittle, hollow concrete "bricks". I've even seen the modern rogue, Brian Burshwood break those cinder blocks over his head as a part of a magic act. Apparently they are not sturdy at all.
Anyways, then the narrator says something like "let's see if the power of this 2600 psi air cylinder-thing can shatter a solid brick wall"...
"Solid" "brick" wall.. Built from fragile, brittle, and more importantly: hollow... "bricks".... "Solid" brick wall... Hollow "bricks".. "Solid" brick wall... Hollow "bricks"...
You can probably toss a hammer through that "solid" "brick" wall. I wouldn't be surprised if a glued duplo-lego wall of that size would be sturdier.
The definition of solid is better used in describing the 40 pound solid steal bar.
That's what solid means. Not fragile, brittle, and hollow cinder blocks.
MURICA!
Not that I expect an actual, solid brick wall to withstand that impact either, but that myth is still untested 😂
Have you tried to use the Gas tanks as actual water torpedoes? Strap a pointy edge on it and you have a pretty useful improvised Anti Ship Weapon
WOW GRANT WAS ANGRY IMMEDIATELY
1:42 Which episode is that?
The episode where Adam falls down
I think it's the one with the myth of the executive that broke a window in a high rise office building.
Why not use Black powder pellets? each cycle drops a pellet rather than a measure of powder?
They gave up so incredibly easily at every obstacle... And then they just straight up bust the myth. Its like they are saying "we couldnt figure it out; so its impossible to do".
@@SirHorned19more like production contraints and no clear way to ignite wet gunpowder got in the way.
Black powder (and any other explosive) has less energy denisty (1-5 MJ/kg) than gasoline or other fuels (30-40 MJ/kg)
The Gunpowder inside the engine MIGHT work if you use it mixed with Gasoline, OR Gaseous Fuel (GLP) or something. I WANT A RERUN!!
Since when do you add pressures together?
Legendary Episode
44:20 Scuba instructor joke
Black powder is not more energy-dense than gasoline. Much less in fact, around 7 times lower. Energy is not the same as power. If your engine runs with air (which it did in all your variants) it's better to use only the carbon in black powder as fuel, you don't need the oxidizer and catalyst. Diesel engines running on carbon powder have been built and run successfully, but suffered from poor emissions and poor reliability. I guess you could convert these engines to run on black powder but there's not much point in doing that.
TBF they use these to steer Falcon9 rockets, so they aren't useless.
kislux versace bag is so cute
Should´ve used real bricks instead.
an automatic machinegun is a powder powered engine, isn't it?
i men, if you shoot blancks and use the energy for something alse?
5:50 Mass Effect 2 Loading screen music!
i must be Dislexic again i readed Cinder Rocket!!
I think if they can some howlower the noose of the tanks under water the thrust will be me much higher since it pushing again water not air
any maschinegun is a gunpowder motor
just a cylinder falling on the floor can cause it to go in a straight line it happen where my uncle worked
I feel like the black powder "joke" wasn't Tory's idea...
R.I.P. Grant, you'll be sorely missed.............
No need to write it in every re-upload.
Stop with this attention-seeking BS. You are just keeping the wound fresh.
16:40 that's a pipe bomb
I love how Tori is just a walking intrusive thought.
RIP François Gissy 🚀
You always have to lube the shaft so you can release the gas 😂
why they do not use a air-engine to power a propeller?
that is the only situation, they not tested.
upscaling would be nice
If they wanted to test that old drawing of a black powder engine, a single cylinder 4 stroke engine would've been perfect.
One would have to remove 2 valves, attach the cable through the spark plug whole, and weld a cap at the bottom of the cylinder. The piston is already designed to do a pretty good gas seal. To remove mass, material could be milled out from the bottom section of the piston (anything at and/or bellow the wrist pin boss).
27:06 bro what is he sniffing like that for wtf
So i'll run my carburated engine on black powder for extra power
im not so sold on the busted black powder engine. i dont think they really went far enough to iron out the problems. we have automatic rifles which reload themselves. they can be considered black powder engines.
The problem shows if you would try to keep it running for longer. How do you guarantee the influx of powder is constant? Powder does not flow like a liquid, you either need a carrier gas or for your entire tank and engine must be pretty much vertical all the way to the combustion chamber. Any pieces that make the engine will also be constantly sanded by the flow of powder, high wear and tear is not what you want for something expected to run tens of thousands of miles. Another problem is that gunpowder has its on oxydizer, so an impact in an accident and your 5kg tank became a 5kg bomb in the middle of the city. As a whole, giving people ample access to black gunpowder explosives isnt the best idea in general. If people already do stupid things with fireworks, what would they do when they have access to it by the kilogram?
imagine an engine that reloaded like a firearm :)
@@tiagocf1208 imagine a system where individual, sealed canisters of fuel + oxidizer + detonator are carried in by some sort of machine.
Also, while they don't use cartridges to RUN engines, they absolutely use them to START some engines. (Sometimes. External power assist is better, but when you gotta do it fast...) It literally looks like some sort of high-caliber round with the projectile removed.
I agree that as a loose, bulk fuel, gunpowder is nothing but a bomb...
@@tiagocf1208 Eh...Most of what you said doesn't make sense.
1) This isn't about making a GOOD engine. It's about making a WORKING engine. Once a concept is proven to work, then there's the time to consider on how to make it better. But that's beyond the scope of 'can you make an engine run on gunpowder'.
2) Where did you even get the idea of a car? You do realize that engines have boatload of uses, and most of them are NOT on vehicles, right?
What does make sense is that one shouldn't really give people access to large amount of black powder...but really...In America any adult can buy explosives stronger than black powder. Its modern equivalent, the smokeless powder. So that point is also kinda moot, despite actually making sense...
@@tiagocf1208 Just mix the gumpowder with fuel
under the water
Something happened to Jamies eye… Anybody know what? Interesting they didn’t cover it in makeup
It's weird watching these knowing that Grant's dead.
The boat didnt go fast enough because the air is not good to push boats
I wonder why they re-edited this episode in such a weird way?
You can tell even from watching this video but the whole episode was shown in another order back in the day.
1 grain=1/500th of an ounce==??? Grams
Not quite like in Gary's Mod, but similar :)
any ideas as to why Jamie has a bruised eye?
It's a TV show!
27:07 Tori getting a little sniff of Kari’s hair?
lel
Since the key to the thermodynamic cycles of combustion engines is the "adiabatic process" (no heat and particle transfer); the lack of latent heat (phase transition) prevents gunpowder engines to complete a full cycle. Steam engines on the other hand, use an expanding medium (steam) to create an enthalpy change in order to keep the reaction going.
Can u not make a liquid from black powder then ignite it ....
Numerous other mentions of gunpowder engines, but it does not appear any were used operationally.
Adam, out of bed and into the studio :D
Not enough delta v for the boat
I have a problem with this tank "missile". the wall is bot built up to a standard concrete wall. You can see that there is no cement poured in between the cinder blocks.
Thats not a core filled wall though
eh was not 2 stroke invented back in their time