The Electric Thruster That Could Send Humans to Mars

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To get humans on Mars we're going to need some innovative tech that can move lots of things at high speed. Luckily, we might already have something that can do the job.
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Опубликовано:

23 окт 2024

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Комментарии : 633

@scheimong 5 лет назад

Currently the most powerful hall thruster produces thrust measured in single digit Newtons. There's quite a long way to go.

@BIkaloss 5 лет назад

That's not as bad as it sound for long term travel, since there is no friction in space your speed will just accumulate infinitely.

@David_T 5 лет назад

There is already a number of comments about the title being click bait. The video should have been titled 'Improved Ion drives for spacecraft' with no mention of manned missions to Mars. SciShow Space is losing cred with this type of titling.

@scheimong 5 лет назад

@@BIkaloss Well, let's do some very approximate maths, using Apollo 17 as a starting point. Apollo's launch mass is about 35t (19t fuel, 16t others). I think it's reasonable to say that a Mars vehicle will need about 40t for equipment and supplies, and another 20t for fuel (the mass reduction by better efficiency balanced out by longer mission duration and occasional need for quick acceleration -> chemical propulsion). To be honest I would say 60t is a very optimistic estimate. F=ma=mv/t. So if we take m=60000kg, v=3600m/s (delta V required for Hohmann Mars transfer), t=60 days=5184000s (180 days one-way, 60 for acceleration, 60 for coast, 60 for deceleration), you are looking at F≈40N. That's about 8x what's currently possible just to reach delta V, and the engine that produced 5.4N was huge. We haven't even considered the engineering challenges of miniaturising the engine. Point is, yeah it is not as bad as it sounds, but it's still very far from enough. Edit: did some fact checking and found it's 5.4N not 3.2N. Point still stands.

@joserendon1025 5 лет назад

@@scheimong What was the size of the 3.2N thruster?

@thesuccessfulone 5 лет назад

Yeah, let's launch potatoes first.

@dr.ofdubiouswisdom4189 5 лет назад

" Uh, Mission Control...it's been 3 days & we're currently 20 meters off the launch pad...Yes, that is Bob 'Mooning' you thru the window...Say, is there any way you could hand us up a pizza ? Over?"

@geraldfrost4710 4 года назад

The Gerbil Thruster motor is vastly under rated... (daym! my rule for "never reply after three glasses of wine" it right out the F'ing window!)

@Eizi0815 4 года назад

You could never even lift off with electric propulsion.

@christelheadington1136 5 лет назад

I had an idea for an electric space ship, but didn't know where I could get an extension cord that was long enough.

@DrummertheCody 5 лет назад

Christel Headington lasers work like extension cords in space 😁

@joshuanorman2 5 лет назад

Just get a bluetooth extension cord, duh

@sdfkjgh 5 лет назад

It's got chicken legs!

@herrschmidt5477 5 лет назад

Just link enough of them d'oh

@anandsuralkar2947 5 лет назад

Ohh god thats sad..can we use wireless charging type tech instead no wires nno prob🤔

@sebastianelytron8450 5 лет назад

3:20 Incidentally, those are the same three conditions girls on Tinder are looking for.

@Spicy_Riker 5 лет назад

They encounter STDs tho...

@xcmodev1558 5 лет назад

ayo!

@harmsc12 5 лет назад

When I imagine a spacecraft going to Mars, I imagine something spinning. Probably ring-shaped for stability.

@alphazombieelite 5 лет назад

Listen man, we don't need to build the Halo just to take over another planet.

@kodakincade8063 3 года назад

That’s weird. I usually think of it being a Tesla, maybe with a mannequin in a spacesuit.

@sagenberg3918 3 года назад

@@alphazombieelite ahh I see you are a man of culture as well

@abe-danger 5 лет назад

I prefer the name "ion thruster"

@cob571 5 лет назад

Kerbal Space Program!

@aniksamiurrahman6365 5 лет назад

Hall thruster is definitely a kind of "ion thruster". But this special type relies on Hall effect.

@geraldfrost4710 4 года назад

a damn sight better than Gerbil Thruster!

@Eizi0815 4 года назад

For this thing? I'd recommend not to. I personally actually agree with saying that Hall thrusters are a type of "ion thruster", but many people who work in the field of electric propulsion actually use the term "ion engine" to refer specifically to Gridded Ion Engines (GIEs), which is not only a different technology but also a different principle (i.e. electrostatic). GIE and Hall thrusters are currently among the most popular technologies in electric propulsion (more or less), and if you want to talk about the Hall thruster with professionals, using the term "ion engine" would likely achieve the exact opposite of what you want - because they'll probably think you're talking about a GIE.

@thesnare100 2 года назад

I prefer them checking to see if this has already been posted and I'm not reading something I've already heard about that's nothing new.

@TeaheanYT 3 года назад

Thank you, you beautiful man. You explained Hall Thrusters so much more simply than anything else.

@andreasksasse 5 лет назад

Few times I've been around that track So it's not just gonna happen like that 'Cause I ain't no hall-effect girl I ain't no hall-effect girl

@alexhutchison8447 5 лет назад

Bravo, round of applause!

@Skylancer727 5 лет назад

Damn. That sends me back to when I was like 5.

@andreasksasse 5 лет назад

@@Skylancer727 that lyrics finally makes sense

@IceMetalPunk 5 лет назад

I had to modify/continue this (written from the perspective of a chemical thruster, of course): Few times I've been around that track, So I won't eject your xenon like that, 'Cause I ain't no Hall-effect girl, I ain't no Hall-effect girl Oooh, this my ship, this my ship. Fuueeelll, this my ship, this my ship. I heard that you were flyin' ships And you didn't think that I would be there. People see you flyin' like that Gettin' all the thrusters charged up. So I'm ready to attach Myself to the back Gonna hang on your tail Gonna weigh you down! That's right, put your ions down, Chemicals are gettin' fired up.

@hankbridges5055 5 лет назад

It's Hollaback.

@ColeDedhand 5 лет назад

So when do we start building TIE fighters?

@papinkelman7695 5 лет назад

If you buy Lego you can start tomorrow.

@ZeldagigafanMatthew 5 лет назад

Rebel X-wings would like to lock on to you.

@humblesoldier5474 5 лет назад

As soon as some billionare decides to build an orbiting dry dock to construct ships in.

@commode7x 5 лет назад

@@humblesoldier5474 You mean a multi millionaire. Orbital dry docks cost less than a sixth of one aircraft carrier.

@Thumbsupurbum 5 лет назад

@@commode7x _Elon Musk has entered the chat._

@AndromedaCripps 4 года назад

The coolest thing about this is that it looks like a lot of the thrusters on the back of Star Wars starships 👏🏻👏🏻👏🏻

@jordanfrielingsdorf4761 3 года назад

The TIE Fighter stands for Twin Ion Engine Fighter

@ir5239 5 лет назад

Fun fact: studied independently in US and Soviet Union. First developed into an efficient propulsion system in Soviet Union. USA built their version of the thruster after 1992 after visiting Russian laboratories.

@chrissonofpear1384 5 лет назад

Seems feasible.

@MeleeTiger 5 лет назад

I still think one of our big goals should be to get a base on the moon, where either people or robots could then construct the main craft. Then rather than having to bring so much fuel and metal into space, we get the people and things needed sent to the base over several flights. That way you'd need less thrust to escape the moon than you would the Earth.

@goliathprojects7354 5 лет назад

0:50 This might be the most sci-fi thing I've ever seen in my life xD

@yerdevesi 4 года назад

Absolutely! A real life tech which looks just like it's scifi counterpart.

@Eizi0815 4 года назад

Pretty cool, but I usually say the same about FEEP :D (you can see it in the first few seconds of this clip vimeo.com/325873932 )

@adrianvargas2118 4 года назад

Most of the people in the comments have been saying that we would be using to get off the launchpad, but in reality a better way to do this is to use a chemical thruster to get out of the atmosphere then use the ion thruster while in space

@bri5033 5 лет назад

Something very different came to my mind when I read that title... lol **teenage robot boy thrusting around the halls in between classes**

@almightyromey9290 5 лет назад

Potato Girl Aliens already here and some are in charge y’all think they holding them 😂🤷🏽‍♂️ classic

@bri5033 5 лет назад

@@almightyromey9290 What

@bri5033 5 лет назад

@@almightyromey9290 What does that have to do with what I said at all

@Christopher-N 4 года назад

"Well, what about all that equipment we're carrying to catalogue gaseous anomalies? Well, the thing's got to have a tail pipe." -- Uhura, _Star Trek VI: The Undiscovered Country_

@TheExoplanetsChannel 5 лет назад

Can't wait for going to Mars !

@jgbalboa 4 года назад

Yeah, but only a chosen few will go...

@abelgerli 5 лет назад

I am glad that we are talking about a real thrust system. The EM drive was a hyped farce. With with more therminal loss than anything and thrust so low that is was nearly all measurement error or a result of heat radiation.

@thecreatonaut6165 5 лет назад

What about Krypton? It has a slightly higher ionization of energy. It is also a stable compound.

@cristiandobranszki9431 4 года назад

Krypton can and it is used to fly HETs (Hall Effect Thruster), because Xenon is so expensive. The advantage in using Xenon is that Xe+ ions are heavier, which increases the thrust generated (or the change in momentum).

@luisanselmo 5 лет назад

They should make a modular Hall Thrust engine and launch it into orbit to gain speed for some years. Then launch the transportation module with chemical thrust, catch up with the engine and go to Mars (or Titan, etc). In there, detach the transportation module for landing (the Hall Thrust remains in orbit) and do the same thing again to come back.

@mirroredchaos 5 лет назад

its interesting too because when we see star ships from some movies or games, we often see not a large flame pushing them but a small gentle blue or red glow which looks pretty similar to what this video is all about

@acetate909 5 лет назад

The Electric Thruster is also a little known Marvel Comic porno character.

@christelheadington1136 5 лет назад

X-rated Men

@andrewbryden9360 5 лет назад

Womp womp

@Skylancer727 5 лет назад

Nah that's the fusion engine. Tony has a fusion reactor in his chest.

@SpaceCakeism 5 лет назад

I feel like you kinda missed, one of the more fatal drawbacks, which is that they have trouble getting off the ground; mostly because they'd have to fight earth's gravity well, and atmosphere, to get out, while accelerating slow... That acceleration will probably be negated. However, for use, when you're already in space, they seem like a pretty sound solution; when humanity have figured out, how to deal the other problems it has.

@Eyerleth 5 лет назад

Well, clearly this would be an upper stage. You'd launch with chemical rockets and then use this once in orbit.

@SpaceCakeism 5 лет назад

@@Eyerleth I figured as much; although, they didn't even mention that; hence the comment.

@ChronitonMechanics 5 лет назад

Unfortunatly, if you are in science fiction, you know that now, the name "epstein drive" for a plasma thruster is a bit tainted because of the actuality... But Hall sound better in my opinion...

@johnhbaumgaertner8948 5 лет назад

Solomon Epstein died for us, hoss. Have some respect.

@Safeway_Sage 5 лет назад

I love this concept. Would love to see it in a practical application.

@massimookissed1023 5 лет назад

en.m.wikipedia.org/wiki/List_of_spacecraft_with_electric_propulsion Including SpaceX Starlink

@andymanaus1077 5 лет назад

It's already used in the practical application of course-correcting engines in some satellites.

@Phoenix10_UK 2 года назад

I read that the reason it takes so long to reach those higher speeds, is due to the strength of the electromagnets and the speed the ions are then pushed out of the Thruster. I wonder if research into strengthening the anodes output, or maybe new materials would be good. They are already very efficient propulsion systems, if we can just increase the thrust the possibility could be endless

@Bit-while_going 5 лет назад

It takes so long to get up to speed because of the difference in spacecraft propulsion speed for different propulsion systems. Suppose though that various spacecraft with different propulsion systems were only used to temporarily accelerate pods on their way between planets, and then reused for the next, that way the transmission of materials could happen in stages at waypoints between Earth and Mars? That's how the first space pioneers will have to think.

@creightonfreeman8059 5 лет назад

The VASIMR ion drive is already running at 200 kw (though not putting out 200 kw of thrust) and has been test run in a vacuum chamber for more than two years. Putting a number of them on the upper stage of a chemical rocket capable of moving at (earth's) escape velocity could allow acceleration half way to Mars, until it was necessary to reverse thrust to slow down for entry into Mars atmosphere. Using this method it is possible to reach Mars in just 39 days according to the manufacturer of VASIMR.

@andymanaus1077 5 лет назад

"The problem right now is that getting to [sufficiently high] speeds takes a long time." I.e. years. Maybe this tech should be named the "Ironic Engine", because it's amazing how something so high tech can accelerate like such a dog.

@andymanaus1077 5 лет назад

There's no reason it can't be. It's useful for some tasks, just not tasks that require human transport. The other problem is if you use it to transport people (to Mars for example) how do you stop when you get there?

@gpilsitz1783 4 года назад

Improbability drive

@borbug 5 лет назад

Thanks for sharing. However, it would be more useful with information on energy density and the mass of the technology vs. chemical propellant technology.

@cmilkau 5 лет назад

There are no numbers in this video but MPD thrusters seem more realistic as the next propulsion for human spaceflight. While not as fuel efficient, they provide more thrust. A demonstrator being on used on the ISS, plasma propulsion could be considered TRL7 now (hall thrusters in general: TRL9, hall thruster in the video: TRL4?)

@DanielRenardAnimation 5 лет назад

_"It's called X3"_ *In my mind:* _"omg hay u guyz sup lolz!!1 X3"_ In all seriousness, though. I love the general "design" of the Hall Thruster. I can already envision large and small aircrafts with a few of these, configured, similarly to how we make drones. Taking off vertically, as well being capable of flying directly to space.

@aerospacenews 5 лет назад

Hall Thrusters also win the "Most Like SciFi-Looking Space Tech" award. They are all glow-y and round like something on an Imperial Star Destroyer.

@lagle8 5 лет назад

literally the only thing i could think about this whole video

@aerospacenews 5 лет назад

@@lagle8 Eggzactly! :)

@nikmed7848 5 лет назад

how aboot we just skip to X10 already

@torvamessorem6686 5 лет назад

There's a lot more money to be made if you make teeny tiny improvements with each installment like X3, X4, X5 etc. Just look at cars, mobile phones, TVs, everything.

@milokaw4193 5 лет назад

The spaceship with X10 would look like a cone with pimples on the flat surface

@starlanceleo 5 лет назад

Everyone is all hyped about putting a human on Mars, I'm more excited about having a Moon base > Moon city > Moon Space Port. Having people live on Mars is a bit of a stretch if we dont have people living on the Moon.

@XxKINGatLIFExX 5 лет назад

THIS IS IT! MAKE IT BIGGER!

@2MANYWWWWWWWWWWWWS4U 5 лет назад

So just 2 stage. Chemical to get goin fast, then Hall to get goin even faster.

@Mars-ev7qg 4 года назад

Back in the 50s aerospace engineers researched the possibility of using hydrogen bombs to send astronauts to other solar systems. It was called project Orion. The project was scrapped because of cost and the sheer impracticality of attempting interstellar missions with our current technology. However it is entirely possible to use a few thermonuclear bombs to give an extra boost of speed to a large spacecraft headed to Mars. The nukes could be launched separately from the ship with the astronauts on an existing space launch system such as the delta heavy on an intercepting course and detonated at exactly the right distance and location behind the main spacecraft to accelerate it towards Mars. Obviously the main spacecraft would have to be carefully designed to take advantage of a nuclear explosion to allow it to do this. However it is not impossible to build such a system. The nukes would have to be set off outside the Earth's magnetic field to avoid radiation entering the atmosphere. The nukes can be set off outside of the Earth's orbit so the solar wind blows all the radiation away from Earth and into interstellar space. If a supper volcano was about to explode and we had to evacuate our best and brightest from Earth to restart civilization on Mars. I think this is exactly how NASA would do it.

@MrKaju01 5 лет назад

The maker of this video must do some research on Escape velocity of Earth. Must know how much velocity is required to escape from earth's gravitational pull if you want to go to space. The way you describe..they seem to be suitable for moving in space...but I doubt if it can achieve enough velocity to escape earth's gravity.

@chrissonofpear1384 5 лет назад

Hence the need to launch them in space, or using a secondary thruster for orbital access.

@MrKaju01 5 лет назад

The monk of astronomy will fire the astrological nitroglycerin puns. So beware of the astrological and future oligonucleotide physical activities structure is required in the black hole.

@NishantSoniTV 5 лет назад

ion thrusters have the top speed of a Ferrari, the efficiency of a Prius and the acceleration of a house plant.

@superdau 5 лет назад

If you only eject the positive ions, how do you get rid of the electrons to keep the spaceship from getting negatively charged over time and get a huge zap when touching down on a surface?

@adespade119 Год назад

What am i missing, they use radioactive decay to generate heat to power generators to ionise gas to be used in Ion thrusters. Why not cut out all the middle men and use the radioactive decay as the exhaust, since the energy of accelerated ions cannot possibly be more than the energy of the radioactive decay particles. Also, couldn't photons be used to generate a small amount of thrust, over, say, decades.

@markchip1 5 лет назад

A significant issue with almost all of these interplanetary propulsion systems is that, aside from the typically slow acceleration problem, all propulsion systems will require an equal (in terms of output and time) amount to decelerate prior to arrival at the destination. You spend as much time, effort and fuel slowing down as you do speeding up!

@TheMightyZwom 5 лет назад

You need less fuel for slowing down. Because you have to speed up your slow-down fuel but you don't have to slow down you speed-up fuel (as it is already gone). :)

@markchip1 5 лет назад

@@TheMightyZwom but minimally compared to the weight/mass of the craft. Barely relevant?

@TheMightyZwom 5 лет назад

@@markchip1 Yeah, maybe. I just wanted to point that out.

@DarkDrai 5 лет назад

I feel like this is more for the outer planets and interstellar space than Mars.

@gamereditor59ner22 5 лет назад

Yeah science!!!

@humblesoldier5474 5 лет назад

I wonder if the Hal thruster would benefit being huge with as many channels as you can fit into the area. Seeing as size isn't an issue once you're out of the gravity well of Earth. You could build a ferry that moves between Earth and Mars the size of some sci fi ships in orbit and then use a chemical, or nuclear burn thruster to get it the rest of the way out of the well, turn on the Hal's and off you go. Granted the ideal scenrio is to have them large enough to not need the chem or nuke fuel.

@cordatusscire344 5 лет назад

They appear to be a great alternative for maneuvering thrusters. Not sold on their ability to get us to Mars though. If I had my way.. I'd have a Lunar orbital construction dock, then build it as large as we need, fuel and all.

@memk 5 лет назад

The problem with Ion thruster is that it requires a HUGE power plant to output acceptable thrust. Not sure if X3's specific impulse value tho

@jezlawrence720 5 лет назад

Surely a mix of short burn chemical propellant for initial acceleration / end of journey hard breaking with hall thrusters for continual cruise?

@matthewsermons7247 5 лет назад

I want to see a Moon base that uses Railguns to fire supplies to Mars and perhaps a long track electromagnetic sled to accelerate passengers at a safe rate.

@jak4004 5 лет назад

Whats wrong with both? Chemical explosive for acceleration and an ion engine for the top speed limit increase? Build a giant slingshot on the moon!

@zerid0 5 лет назад

Damn it, now I want to play KSP again. Well, here goes another 100 hours of my life...

@brucekragen4687 5 лет назад

Columini KSP2*’s coming

@jamesstepp1925 5 лет назад

That's cute, but nuclear propulsion is far better. once we have the infrastructure on the moon built we could even make Orion drives. Think spacecraft with 250k people on board, with walls so thick we don't need to worry about radiation in space at all. Using antimatter eventually we could hit 10-20% the speed of light, and have enough energy at the other end to slow down. A Hall thruster might work in deep space probes, but people want to get there in the shortest amount of time. Hall thrusters are not going to provide that. Ten there was NERVA. Not something you would want to launch from Earth (unless you're Russian) but vastly better than chemical rockets and already tested. Build these types of drives on the moon and you circumvent the "launching nuclear materials" NIMBY issue. en.wikipedia.org/wiki/NERVA

@danisyx5804 5 лет назад

Everything you said involves circumventing safety rules put in place for good reason not to mention nuclear materials and apparatus necessary to cause a nuclear explosion are extremely heavy we don't send a lot of tungsten carbide into space for a reason

@Zappyguy111 5 лет назад

We aren't replacing orbital rockets with ion thrusters, just so you all know. The fuel we transport isn't just mass to accelerate, but energy to accelerate it is bundled in there too. I've had a half hour long chat with a guy who claimed electric thrusters will be the future of suborbital flight, great thrust to weight ratios, excellent specific impulse, but what killed the conversation was when I said, "that sounds amazing and very power hungry, how do we power it?"

@tinypanther27 5 лет назад

the way this was described, it suggests the space craft would be left with net negative charge

@ChemistryAmsterdam 5 лет назад

Wauw no commercials!!! +1 👍 Respeckt 🙏

@sovietunion5046 5 лет назад

looks like one of those engines back on the star destroyers in star wars

@therongjr 5 лет назад

What is the safety like for these Hall thrusters? I mean, compared to a mostly contained explosion pushing your craft along?

@Thumbsupurbum 5 лет назад

Xenon is a noble gas, so it isn't corrosive or flammable. Far safer than most propellants.

@Krebzonide 5 лет назад

So in car terms its got a high mpg and top speed but a low hp and acceleration.

@fransoto8343 5 лет назад

But low as in a baby is the only thing pushing behind the car.

@bevanfindlay 5 лет назад

I had an idea while watching this: chemical rockets are too fuel inefficient, electric propulsion is too slow to accelerate, but has anyone ever thought of combining the two? So, you use a burst from chemical rockets to get you started (possibly in a removable stage), then speed up your journey by coasting along with electric propulsion. I realise it's adding weight and complexity, but I'd be curious to see someone try the maths. Anyone know if this has been considered before?

@mattj500 5 лет назад

Halo in real life confirmed.

@ChronicNameChanger 5 лет назад

I really would have liked to see a real video of a hal thruster working

@CrispyMOFO91 5 лет назад

KSP, has a ion engine. I use it for satellites to change there orbits.

@conornorris6815 5 лет назад

i want to know how possible and helpful it would be to drill a hole in the moon and ships out of it by rail gun that would provide a reasonable starter speed for your spacecraft and if you kept it in line with the orbital plane of most objects in the solar system, it would only take a bit of post launch course correction to get your ship to any stellar body

@cynodont7391 5 лет назад

There is something I do not understand. If Xe+ are ejected then that means that a negative charge will build up inside the engine. Isn't that problematic?

@burningsilicon149 5 лет назад

So the positively charged xenon gas exerts a force on the positively charged anode which causes electric repulsion which is the thrust the rocket.But wouldn’t the electrons attract the gas and decrease the thrust or is the quantity of negative charge negligible also the cathode would also attract the xenon gas so I guess a lot of these parts have to be electrically isolated.

@boulderbash19700209 5 лет назад

The problem with ion engine is it can't move any vehicle inside earth gravity well, not even the engine itselves. Its thrust is too small to compete against earth gravity (plus friction). It means we still have to rely on chemical rockets to fling spaceship to orbit and only then we can use ion engine to deliver us to the target.

@dolajakevan 5 лет назад

I heard Gwen Stefani isn’t a big fan of electric thrust. She ain’t no Hall effect girl.

@codzboy74 5 лет назад

Amazing

@kf160k160 5 лет назад

Lol!

@Prague3203 5 лет назад

Easily the most underrated comment. Well played

@BlueFrenzy 5 лет назад

What about accelerating the ions to even higher speeds usong the same technology as the railgus? In the end if you cannot increase the mass, you can increase the speed for extra thrust.

@normoloid 4 года назад

A chemical rocket and ion thruster, or chemical rocket and photon rocket hybrids could be pretty efficient to their weight and size.. Once a week 60 second burn for example could be pretty nice booster for a ship on long trip.

@stickybiscuits4199 5 лет назад

Getting to and from Mars without refueling is the problem. Once you get into the vacuum of space you just let your momentum carry you forward and spend little to no fuel for travel. the problem would be carrying enough fuel to get off of earth and then the Martian surface once you’re ready to leave. It takes around 7 months to get to mars at the closest orbits with our current tech, it took curiosity 253 days. Sounds like a cool way to travel through space, but it won’t be used to get to mars.

@chrissonofpear1384 5 лет назад

Any help from ramjets?

@TheGreatSatan_ 5 лет назад

Now do a video on how do we hit the breaks when we get there.

@timminh468 4 года назад

The Great Satan , put a powerful propulsion system in the front pushing the spacecraft backward?

@gamesman0118 5 лет назад

Or you could use hall thrusters to move supplies to where the human's ship will be. Especially fuel.

@David-ys4ud 5 лет назад

Yup and by the time the fuel or supplies arrive the human will be dead for years or decades

@gamesman0118 5 лет назад

@@David-ys4ud Obviously you send the supplies first. I thought the fact I said where the human ship WILL BE hinted at that at least.

@BBR-rd7iy 5 лет назад

2 is and a gun make a tie fighter WOOT LOL

@TheMightyZwom 5 лет назад

I disliked this video, which is very uncommon for any of the SciShow videos. Seriously: the explanation of the hall thruster's operation principle I found barely understandable, wikipedia does a way better job in this case. Also, you talk about "high" and "low" thrust but never mention any numbers. Wikipedia gives me an exhaust speed of 10 to 80km/s; it also gives me a thrust of around 80mN for common models and up to 5.4N in lab experiments. I can compare that to a few hundred mN common ion thrusters have, to get an idea of what a "high" thrust is. This isn't hard to include - don't take us for idiots who are afraid of a few numbers. Lastly, and I can't stress this enough: Ion thrusters NEVER actually emit ions alone. This is very important to their function. The have to neutralize the plasma after accelerating it - otherwise the drive would become negatively charged over time and that would eventually render it completely useless, as the resulting electric field would slow down the exhaust, and (based on Newton's third law) would slow down the thruster. Anyways: Looking forward to the usual, great videos :)

@Pyriphlegeton 5 лет назад

Great constructive criticism!

@Yamaazaka 5 лет назад

Explained it quite well to me dude. And those numbers really mean nothing to the average viewer.

@TheMightyZwom 5 лет назад

@@Yamaazaka Maybe the numbers don't mean something to everyone. But the comparison of those number surely does. When you compare a few hundred mN to >5N, you can easily see that the new thruster has an around ten times higher thrust than other ion drives. And that is an info that helps to understand the importance of that technology while it is not very complicated to comprehend. Maybe my criticism is too harsh, but I've seen a lot of educational TV shows going down the drain by dumbing stuff down more and more (to get more viewers) until the information got even literally wrong or it was stuff like "can this large and fat man eat the world's larges Bratwurst?"... And I just don't want this to happen so SciShow, because they are awesome!

@anandsuralkar2947 5 лет назад

Very good bro i was looking for this comment

@anandsuralkar2947 5 лет назад

@@Yamaazaka avarage viewers dont watch x3 ion thruster

@flatplant 5 лет назад

I always like future space gadgets with a futuristic aesthetic

@JRBendixen 5 лет назад

"The Electric Thruster That Could Send Humans to Mars" and never will should be the title.

@anandsuralkar2947 5 лет назад

Never will?? Nope thats not true

@vedritmathias9193 5 лет назад

I've always wondered....what would happen if you hit rocket engine exhaust with a bunch of microwaves to excite the particles further and increase the velocity. Would it improve engine performance?

@ckl9390 3 года назад

What about first using a burn of chemical fuel to get up to a half decent speed? Then using the Hall/ion thrusters to accelerate on top of that?

@Plarby 5 лет назад

X3...a good sideways kitty grin face.

@Eizi0815 4 года назад

I find it a bit annoying that you put two somewhat contradictory things as advantages for the Hall thruster. At the same input power, one thruster cannot really beat another in both efficiency and thrust at the same time, unless one of them uses a technologies that has large efficiency issues. Physically, it's quite a simple trade-off: high exhaust velocity means high fuel-efficiency (because you're getting a lot of momentum per atom), but at a given power level, you cannot arbitrarily vary the number of atoms you can accelerate to a certain exhaust velocity per second. Basically, kinetic energy has two variables: mass and velocity. Power is the rate of change of energy, and the power supplied to the propulsion system is used to constantly increase the kinetic energy of the atoms (i.e. accelerate and expel them). Therefore, for fixed power, you have two choices: either you increase the exhaust velocity but decrease the mass flow rate, or the other way around. Less exhaust velocity but high mass flow will decrease your efficiency (because each atom contributes less), but it increases the thrust.

@Jcewazhere 5 лет назад

Good video. The Martian used ion thrusters to move it's ship didn't they? Also KSP has Xenon thrusters which are Hall Effect thrusters.

@tommyboyer3104 5 лет назад

How about using a chemical booster to get to space, then use the Hall Thruster once out of orbit?

@SQW0 5 лет назад

That IS how they do it. No ion engine would have a snowball chance in hell pushing the entire assembly out of Earth's gravity.

@beak1291 5 лет назад

Becuase you would have to use a chemical engine to lift a huge worthless battery into space that has 0 redundancy capabilities in case a single thing fails to then wait forever for it to build any kind of speed that is worthwhile.

@Boondockpunk 5 лет назад

The two main obstacles for the thruster to over come is production and and human greed

@lbochtler 5 лет назад

I prefer the Vasimir Thruster

@techsandbulls1869 3 года назад

now the problem is to carry so much energy elctricity is not infinite so u need to carry either a battery or elctricity generator which is way more limited than fuel thruster

@osmosisjones4912 5 лет назад

An electrical current flowing from tip of front .to behind and as electrons and photons get caught in electric current the feild pushing it would get faster and faster

@shakaibsafvi97 2 года назад

Isn't Xeon itself the fuel and has to be carried on board ? Can you compare per Kg thrust of chemical fuel propulsion and Hall thrusters in space ?

@andymelendez9757 2 года назад

Captain Kirk : Scotty engage the antimatter plasma doping spitter feed! Scotty: Captain that’s never been tried before due to the hull integrity compromise factor! It will blow us clean across the universe………. Captain Kirk: Scotty! What if…………………………….

@sidll2064 5 лет назад

Scranton WHAT? THE ELECTRIC THRUSTER!

@NewMessage 5 лет назад

I hope it does.. 'cause the Electric Boogaloo didn't get me anywhere.

@Ging_10 5 лет назад

What happened to the VASIMR Engine? The Plasma engine is much better for deep space flights.

@OneTwoFreeForAll 5 лет назад

Could you start an ion thruster months ahead of time on Earth, then use chemical thrusters to get into orbit, abandoned the external chemical Thruster, and let the ion Thruster take over?

@Blue_Spirit7 5 лет назад

I can see myself using this as the same tech iron man uses to fly.

@Prague3203 5 лет назад

It probably is, except stark isnt using Xe Gas and because he has the Arc reactor hes probably able to quickly ionize denser gases to greater effect.

@Blue_Spirit7 5 лет назад

@@Prague3203 true true. But we are at least 0.1 steps ahead 😁

@osmosisjones4912 5 лет назад

What those ion thrusters were on a ship already in motion. The E.M Drive didn't work because a body at stays at rest. At best the walls would vibrate. Or melt the walls . But if on a ship already in motion.with conveniental Rockets . The E.M drive would accelerate the ship with less fuel. Even after turning rockets off

@peterdorn5799 Год назад

can you increase age speed with higher more electricity from a small modular reactor

@Starfals 5 лет назад

Its like the Star Trek/Starcraft or any kind of futuristic movie :) Pretty cool

@zazenora7225 5 лет назад

but then you realize this has been a thing since the 60's... xD it does definitely have the futuristic look that I'm sure inspired some of these.

@robertvaida3003 5 лет назад

This looks so close to science fiction space ships

@TheDigitalZero 5 лет назад

Notice how many things on this channel is old tech from the 19th century? I feel like the channel is turning into a: "Here, now leave us alone."

@Kumquat_Lord 5 лет назад

You're omitting something extremely important. While xenon is indeed the best fuel with the highest specific impulse out of the noble gases, it is EXTREMELY expensive, and time consuming to get large quantities of.

@herrschmidt5477 5 лет назад

Not if you farm the moon

@Kumquat_Lord 5 лет назад

@@herrschmidt5477 you can't get xenon gas from the moon, it has no atmosphere

@herrschmidt5477 5 лет назад

@@Kumquat_Lord articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?bibcode=1974LPSC....5.2023L&db_key=AST&page_ind=0&data_type=GIF&type=SCREEN_VIEW&classic=YES