Can Nuclear Propulsion Take Us to Mars?

Real Engineering
Visualizações 2 867 233
100% 70 000 0

Be one of the first 500 people to sign up with this link and get 20% off your subscription with!

New streaming platform:

Vlog channel:


Get your Real Engineering shirts at:

Writer/Narrator: Brian McManus
Editor: Dylan Hennessy
Animator: Mike Ridolfi
Sound: Graham Haerther
Fact Checker: Charlie Garcia
Thumbnail: Simon Buckmaster

[7] Rocket Propulsion Elements
[14] &
[17] .
Thank you to AP Archive for access to their archival footage.

Music by Epidemic Sound:


Thank you to my patreon supporters: Adam Flohr, Henning Basma, Hank Green, William Leu, Tristan Edwards, Ian Dundore, John & Becki Johnston. Nevin Spoljaric, Jason Clark, Thomas Barth, Johnny MacDonald, Stephen Foland, Alfred Holzheu, Abdulrahman Abdulaziz Binghaith, Brent Higgins, Dexter Appleberry, Alex Pavek, Marko Hirsch, Mikkel Johansen, Hibiyi Mori. Viktor Józsa, Ron Hochsprung

Ciência e tecnologia

Publicado em


16 Abr 2021



Baixar vídeos:

Carregando o link.....

Adicionar a:

Minha playlist
Assista mais tarde
Comentários 4 000
Real Engineering
Real Engineering 9 meses atrás
Woops. The outro audio revealed Real Sciences next video by mistake. It's gonna be a banger though, ye should subscribe.
Space Junkie
Space Junkie 12 dias atrás
Swert video! Off topic, did James Webb fall off course? I saw a BBC story claiming it did
Devon Stark
Devon Stark 13 dias atrás
@George Vavoulis less working together, and more if we'd found a commercial use for space. Elon Musk is doing more for space colonization than any government ever has. and on a much better budget, too.
George Vavoulis
George Vavoulis 13 dias atrás
Don't forget Dr. GERRSRD K. ONEIL read his book "The High Frontier: Human Colonies In Space " . It talks about how we would start building permanently inhabated, self supporting colonies on the Moon and in space stations and space colonies orbiting Earth . It was written in 1970s imagine where we would be now if we all worked together and built these
BlueStar 22 dias atrás
Mega tons cargo launch by using occult , using Astral beings (or Djinn Arab Jin) . After ritual , few grams ritual powder is applied to cargo , few grams sent into parking orbit(planet) with rocket. Then jin is summoned to lift cargo into orbit (planet), happens in seconds.
Devon Stark
Devon Stark 27 dias atrás
@ONNIE TALONE Well, china's been working on their space program longer than musk, but Musk's made a hell of a lot more progress.
TheBurtDad 9 meses atrás
Wonderful as always sir!
Фуркан Динчеров
@Dilo Gaming здравей
Dilo Gaming
Dilo Gaming 11 dias atrás
@Фуркан Динчеров привет
Jonathan Harris
Jonathan Harris Mês atrás
They can't use cripton in the engine because it could kill super man.
Jay zeee
Jay zeee 2 meses atrás
There are patents that would change the world for the good but they have been put on the Shelf to save jobs and to create scarcity
Ck digital The Q of 6th
Using chem form rockets mix with nuculear combustion thrust, is *luticrisp* of anything modern, for solar travel, its far more fission effective with electric energy combustion thrust, non idole, continues gforce gravity granted, infinate regen support with solar conducts, nonstop duriation of acceleration from point A to B! carrying some spare chem fuel alone, is feasable, for traditional emergency manuever and vtol land initiations.
MATTWER 8 meses atrás
Pretty amazing for a species that just figured out flight in 1903.
After_Midnight 7 dias atrás
West is the best
Fibosssdvc Inc
Fibosssdvc Inc 8 dias atrás
you are like a human that tries to admire humans! while can't have the knowledge to apply the correct mathematics for the most basic and fundamental calculations, well birds used to fly far before 1903, and today even they fly, birds are dumb animals though! and they admit it, humans however don't! #chimps_insisting_upon_not_being_ignorent_chimps,. #getoutofmyplaneT,.
Rafael Alexie
Rafael Alexie 12 dias atrás
@Shevanka Seneviratne I agree with you. We just need to drop this "We have to go to Mars to save Earth" mentality. You cannot tell me you can build a car engine from scratch all the while telling me you don't know how to change a spark plug. We should strive to address as many engineering problems as possible one step at a time.
Shevanka Seneviratne
Shevanka Seneviratne 12 dias atrás
@Rafael Alexie yoooo a fellow science nerd! True dude ! Any Co2 we add would probably get eroded away by solar winds too. But i still think space exploration and combatting climate change arent mutually exclusive of each other. It wont hurt to try and do both i feel.
RhodesianSAS1994 13 dias atrás
All thanks to White Europeans with help of East Asians.
Mike Larry
Mike Larry 8 meses atrás
Looking at this video now makes me wish I could have seen it when I was doing physics in highschool... just the way the equations relate to the actual real world applications is just so fascinating
joimy95 25 dias atrás
Well if you could not imagine in high school that the equations are a language to describe the real world. Physics is not your thing.
Tripp Canada
Tripp Canada 3 meses atrás
All make believe Larry.
Golden Age Creation
Golden Age Creation 8 meses atrás
YHWH Dna code, math check it, ‘Just Go With it, Best Decision you can make’ ‘like the Most Holy Dog With Rules, Holiness, Cleanness’ ‘Most Important Being, most pain, Worthy can do anything’ ‘Have To Put Good effort’ ‘Father And His Young’ ‘Holy Of Holies’ ‘flaws from chet’ El Moshaah, Abba, Yahueh, Yahweh, Jehoshua, If he was evil he wouldn’t be Worthy then
doliio volay
doliio volay 8 meses atrás
I love how you always make a boring subject really interesting. Amazing video!
Balin_James_Music 8 meses atrás
I feel silly for not knowing ion thrusters are real. That blue glow is so eerie, but so beautiful
doltBmB 25 dias atrás
Around the time star wars was being made, ion thrusters were a brand new development that was touted as the future of spaceflight, so of course that was used as an inspiration. The basic TIE-fighter layout of solar panels powering an ion thruster is now what most space probes look like, of course, the real thrust is very low, but it's funny to think about.
Josh Campbell
Josh Campbell 2 meses atrás
It's literal science fiction come to life.
@sokin jon would jets work on all 3 of those? If so that's freaking crazy and cool
Everett Tsang
Everett Tsang 4 meses atrás
@F99 They already have built ion thrusters, also called hall thrusters, and use them on satellites.
F99 4 meses atrás
Wait till they build a REAL ion thruster. At the moment we only have giant particle acellerators on earth. But in space it would be a new chapter.
Ben McReynolds
Ben McReynolds 15 dias atrás
I have always dreamed about us setting up a secondary launch point from the moon. Where we use a large portion of fuel to escape the earth. But, then refuel on a base at the moon and go from there with more fuel then we've ever had and the moon has way lesser gravity so it'll make this super effective towards efficiency.
david2869 2 dias atrás
More likely we would use an assembly station in Earth-Moon orbit at L5 or L6 to assemble the spaceship from parts made on the Moon.
Lars-asaurus 9 meses atrás
Hey Brian, I'm just a rocket engineer telling you that you did a fantastic job on this video. You explained everything perfectly and all of the benefits and drawbacks of each approach. You should be proud of this one!
FairySox 2 dias atrás
@CyKlone Tidal Energy I never mention any of the Ideas you just made that Hurtful reply with, you Just started talking about light speed and having people in the craft, anti matter drive, nuclear propulsion etc. None of which Did I even mention. Then you proceed to tell me I'm making a Nerd Winking excercise and to goto a cosplay, and even that I have a lot to learn... What, !!! all I said was I had a good idea which may work !!!
CyKlone Tidal Energy
CyKlone Tidal Energy 2 dias atrás
@FairySox You can't protect a spacecraft from it's hull being made into a sieve like pointing a shotgun at a plastic bucket. A can unable to hold any atmosphere inside. The faster you fly closer to light speed even the tiniest things will act like a wolfram core armor piercing projectiles. So going faster by nuclear drive is just utterly useless. Maybe the can will make it but not anyone still breathing inside. Only with antigrav drive you would have any matter deflecting shield that can prevent stuff hitting the hull in the direction of flight. Good luck with the nerd winking excercise. Go to some Cosplay an be a good Jedi there young Padawan. A lot learn you must.
FairySox 3 dias atrás
A rocket engineer I just thought of a way we may be able to overcome this and propel objects massively faster, If there's an astrophysicist reading this , or anyone that is a little bit of a computing Genius... then please message me. Might be stupid but I think it may just work !
Ben McReynolds
Ben McReynolds 15 dias atrás
That's an awesome compliment to get from someone who earned the ability to say " just a rocket engineer here saying good job 👍"
CyKlone Tidal Energy
CyKlone Tidal Energy 27 dias atrás
@ONNIE TALONE I would always advocate listen to the science, stand up for democracy give people a voice, equal opportunities, low corruption, anti-cartel and consumer protection and sensible meaningful social security. Greed and Envy are the worst impulses to trust in on a ball of hot rock flying through space with 7 to 9 billion people with nuclear weapons. Empires have all been raised on the promise of bounty. Once you have nuclear arms deterrence keep you away from looting other people in hot & big wars you need to find something new. That is one of the biggest cultural changes next to contraception keep us from going to war to steal food for hungry mouth to feed. Key thing about education is people get these value changes all wrong. They cling to traditions serving a way more brutal and merciless past of perpetual warfare and "colonization" of less developed cultures and rob their lands. With Pakistan, Iran, India and desperately poor & starved North Korea in the nukes club that is a nonstarter option for any future. I recommend for traditionalists to adopt to realities changed forever and get their minds around what happened at the end of WWII. How oil and wealth was distributed and what to do about climate crisis. i understand it is really uneasy for them to accept that perpetual warfare and robbery isn't a valid cultural model anymore that has core value. That is is pointless to run around with several firearms each day. That is just paranoid and from possessing these arms you program yourself for seeking to use that tool you cherish on someone. Why would you have wasted money on it and believed in it first place? The NRA got you sold on them. Allrighty. People sell you on things all the time. Get over it and start working on the real issues of survival on this hot rock in cold and unforgiving space. That is what I recommend to people - start to work on the real thing - climate crisis. Do it unbiased from ideology. Don't be duped into this being a left/right wing issue. people who preach that do have an agenda of preserving personal financial profit from fossil fuels - be it pensions or stocks market investments or dark PsyOps PR money income from fossil lobby. Survival does not ask for what you do believe. It does ask to collaborate and get stuff done fast. This is all about what promise of wealth is legit on a planet that needs to chose between energy transition or going Venus. That is a very singular option to educated people. You can only completely reject science or be in a moral dilemma. If you reject the science your are in an ideological cultural dilemma. You need to sort out that chaos for yourself and what you teach your kids and what partner you have. It puts each and any affiliation into question. Your personal life goals and desires. Nothing is going to save people from that psyche. What good can a life in constant denial be? Who will you be in the face of your kids? That's the tough ones to answer - your legacy. You got none if this goes wrong - like everyone else. It is about why get up and what work to do each day.
der Skipp
der Skipp 3 dias atrás
Ion propulsion looks like it is straight out of science fiction. Amazing! So cool to see that it is probably gonna be a big part of the future. Just imagining a large space craft slowly drift with ion thrusters only to then fire up chemical combustion engines in a giant explosion in order to decelerate close to a celestial body has me creaming myself :O
Lightning strikes twice
It is hard for me to comprehend how brilliant these people are!
Cyberspine 6 dias atrás
@BlackholeTtson452 It would be possible, if such a project was funded. I doubt it will be, though.
BlackholeTtson452 6 dias atrás
Yeah lightning Me too.
BlackholeTtson452 6 dias atrás
@Cyberspine do you really think 10-20 years from now we could have the technology like this as shown in the video?
Cyberspine Mês atrás
I used to feel the same way before I went to university to get an engineering degree. I'm still no rocket scientist, but I can fathom how people are able to develop these technologies. Much is often said about the uselessness of a college degree, but I believe they are still very valuable.
Guz 10 dias atrás
I'm in love with this channel. It's so easy to understand and encourage to learn more Thank you so much
ERM 8 meses atrás
Please do more engineering videos about space, your work is amazing!
Nen Master5
Nen Master5 14 dias atrás
Many cover Space. Wnat to know some names of youtubers?
MisterRick'sChannel 5 meses atrás
Thanks for giving me a rudimentary understanding of this subject without making me feel stupid. I've been alive for the entirety of human space exploration, and wish to be alive for the first humans to Mars. I'm already 62, though, so I guess we'll see how that plays out.
santino sartoris
santino sartoris 8 meses atrás
you explain these confusing topics with such simplicity and accuracy. thanks so much great video
Mark Vrankovich
Mark Vrankovich Mês atrás
Excellent work. Can't imagine how long this took too make.
r vanden
r vanden 8 meses atrás
Great video. Gives a very good bird's eye view of the problem of propulsion in space. I like the hybrid ion/ntr idea. Assuming the long-term hydrogen storage problem can be solved, how long would a non-gravity assisted flight that would go into orbit around Sedna take using such an ion/ntr hybrid? Assume a payload mass of ~1,000 kg. I'd love to see a calculation of a mission like that. Mars is not the only game it town.
KhAnubis 9 meses atrás
These animations seriously keep getting better and better
Fibosssdvc Inc
Fibosssdvc Inc 8 dias atrás
the math used here to demonstrate and describe the ion propulsions, however is getting worse and worse as the video progresses!
Jacob LeWelseam
Jacob LeWelseam 27 dias atrás
The graphics are amazing. Bettering the message and information conveyed. Visual learners rejoice!
Tim Bushell
Tim Bushell Mês atrás
yer, but screw the units, Km [sic] versus km, repeatedly flip. : ((((((
Pavel Komarov
Pavel Komarov 5 meses atrás
Which software are they made in?
Earthalien Zapa
Earthalien Zapa 7 meses atrás
Move mars closer to earth gets rain
DrDread 3 meses atrás
Really great presentation. I keep coming back to watch this one over and over. In the near future, we'll be adding thermonuclear propulsion to the mix. What a great time to be alive.
Travis S.
Travis S. 8 meses atrás
*Me acting like I perfectly understand what's going on but I'm actually a bumbling idiot*
Kevin Jacobson
Kevin Jacobson 2 meses atrás
@Buck Mulligan You're part of what's wrong with our society.
smokey potter
smokey potter 3 meses atrás
At least you can bumble. 😕😏🤔
Diego Vidal
Diego Vidal 4 meses atrás
Not knowing doesn’t make you a idiot it makes you a beginner you could learn almost anything if you try hard enough no matter how smart you are
ForcesNL 5 meses atrás
@Buck Mulligan Energy can be used up to 50 years. If there was just a way to at least recharge some of that energy we could go even futher. Slingshotting in combination with a small nuclear burst (0.5/1 kiloton? No idea lol) at it's peak acceleration would be able to escape our system. All that could go wrong after that so you would have to start over is irrelevant, since we have no clue of what's going to happen. Using energy might be very efficient at that point with the lack of our sun's pull. It'll probably end up as swiss cheese.
Basesixty 5 meses atrás
@Nayan Dusoruth the neat thing about ksp is that it not only taught me cool things but it made me want to go off on my own and learn other cool things.
Colby Matson
Colby Matson Mês atrás
For a nuclear thermal engine, could electrical energy be extracted from the system to power electrolysis, generating hydrogen and oxygen? Something like that, even using a second reactor to power the electrolysis, would allow you to store the hydrogen longer. Even some other form of storage could work.
doltBmB 25 dias atrás
problem being oxygen is relatively heavy and you're going to have a large excess mass of oxygen if you store hydrogen in water. the real breakthrough would be if you could make metallic hydrogen, which would be stored as a solid and solve all the problems with storage.
John Lloyd
John Lloyd Mês atrás
Yes. You need radiators to manage the waste heat, so have a temperature gradiant between the hot engine housing and cold radiators, which can he exploited to generate energy by various means. Or you can divert reaction mass from downstream of the engine and use it to power a gas turbine. However, reactor design constraints and issues with the very binary operation profule of an Nuclear Thermal mean it might be preferable to simply have a smaller heat pipe reactor or the like that runs in a steady state to make power. Or just use an Orion engine. It's way faster.
I.C. Gedye
I.C. Gedye 8 meses atrás
A very clear way of explaining such a complex subject thank you. So how far are we away from testing a nuke hybrid drive in space, and what successful ways are there in existence to safely store hydrogen long term? Could the environment of space make this easier, or could it be made up there out of water (producing oxygen also). I guess a moon base is way overdue!
BlueFrenzy 7 meses atrás
It takes a lot of energy to ionize the xenon. Maybe a key to improve the ion thrusters is increasing the exhaust speed by accelerating the ions for longer.
Kris B
Kris B 27 dias atrás
Cool video! Although I feel you might have undersold Nuclear Thermal video a little - I get the point, since it's more about the potentials of NER, but NERVA is quite an early design that very much in the lower end of what can NTRs do (even for solid cores!). Not to mention that I feel like if we were indeed going with a nuclear thermal, it'd likely be an NTER instead of a simple NTR, as that can push the exhaust velocities much further into the 10+km/s range, or even NERVA-like performance using more easily storeable propellants.
LOLHAMMER45678 22 dias atrás
Timberwind was supposed to be a lot better than the OG NERVA designs. What a shame we never built it.
The Author
The Author 24 dias atrás
I love it when your videos are just pure science and not the pet theories of someone - great job!
Nen Master5
Nen Master5 14 dias atrás
If you love them, surely you want more science-channel, yeah?
Jacob Scott
Jacob Scott 11 dias atrás
Was hoping to see some discussion on Nuclear Explosion Drives, where a small fission reaction explosion is the source of the thrust. Pretty interesting if not exceptionally challenging.
Jared Nelson
Jared Nelson 9 meses atrás
So weird to hear Gary’s name. His family lived in our neighborhood when I was much younger. I was close to the same age as his oldest child. We knew he was involved with “space”....but it was years later before I understood the true impact of his accomplishments. He was an incredible pioneer.
Kenna Rajora
Kenna Rajora 8 meses atrás
@moh that's fair. But it's always nice to know his names still being mentioned. I guess he wouldn't know about real engineering, so it probably wouldn't mean much to him.
santzero santone
santzero santone 8 meses atrás
moh 8 meses atrás
@Kenna Rajora why would he care that his name was mentioned in a BRvid video, no offense to Real Engineering; the guy is like a rockstar in the space business.
Jared Nelson
Jared Nelson 9 meses atrás
If anything, I’d be offering as much TP as he requires.
Desert Fox
Desert Fox 9 meses atrás
He was the guy who used to bring you toilet paper. You will never forget him.
AlrightyDave 8 meses atrás
Absolutely perfect video. Love these rocket science videos. Fun to watch and even beats school in terms of how much there is to learn! Really wish schools would recognize how great your videos are and promote them.
Charles G
Charles G 2 meses atrás
Nah, schools are trash. They just wanna push LGBTQ and BLM, not actual science
AlrightyDave 5 meses atrás
@Seth Huff I do indeed I’ve got 1300 hours logged in the last 1 year and 3 months My channel is about to become a KSP one with all the stock replicas that I’ve built in a few weeks If you scroll up in Real Engineering’s gaming media channel in his discord, I’ve posted all my screenshots from stock replica building and testing that you can check out if you want :) Recreated the Starship, Mars 2020, ISS and Artemis programs in my stock save file, will be uploading cinematics on my channel very soon
Seth Huff
Seth Huff 5 meses atrás
you play kerbal space program? teaches this kind of stuff by trial and error
sehhi vooty
sehhi vooty 8 meses atrás
I always see a Brilliant sponsorship coming, and I'm never disappointed to see one
my Entertainment
my Entertainment 8 meses atrás
This video is amazing. I learned a lot from it. Thank you very much! Congrats with 3 mill :)
Kevin Kapoor
Kevin Kapoor 8 meses atrás
I have watched this channel from the start, literally from its first video. I even remember you replying to one of my comments a long time ago :). It's lovely to see how much this channel has grown and how much your videos inspire me. Your videos get better every single day. Keep up the great work!
Golden Age Creation
Golden Age Creation 8 meses atrás
YHWH Dna code, math check it, ‘Just Go With it, Best Decision you can make’ ‘like the Most Holy Dog With Rules, Holiness, Cleanness’ ‘Most Important Being, most pain, Worthy can do anything’ ‘Have To Put Good effort’ ‘Father And His Young’ ‘Holy Of Holies’ ‘flaws from chet’ El Moshaah, Abba, Yahueh, Yahweh, Jehoshua, If he was evil he wouldn’t be Worthy then
CaptainFactoid386 9 meses atrás
I really wish I could’ve taken Nuclear Propulsion at my school, but the professor retired the year before I could take it.
Seth Huff
Seth Huff 5 meses atrás
sirBrouwer 9 meses atrás
you could try to go in the more conventual energy (production) classes and use that as a stepping stone.
JP Montello Dr.Phosphorus
excellent explanations! I think nuclear thermal will be useful for a mars mission. I think the spacecraft needs a hydrogen tank for the initial "burn" and a hydrazine nuclear-thermal-monopropellant configuration for the retro burns etc. Hydrazine is obviously storable and even though it contains nitrogen it should still deliver a pretty high Isp as a mixture of gasses.
airplane800 Mês atrás
Watching this video just make me feel that we are still in the stone age for space travel. I just have a feeling that there is something out there that we still don't know.
NetherWolves 11 dias atrás
We still have to discover fire (metaphorically)
Milan Janic
Milan Janic 8 meses atrás
Brillian content! Could we have follow up video on safety of these systems in real use?
Cereal.killer 2 meses atrás
Humanity is amazing! Crazy how we can get this kind of education by just BRvid.
Danyal AG
Danyal AG 9 meses atrás
Any problem in the world: exists Nuclear Energy: Sounds like a job for me.
gasdive Mês atrás
@can can it isn't even feasible in this application. The radiators would be larger and heavier than the solar panels needed to make the same power. Just go plug some numbers into a black body radiation calculator and you'll see I'm right.
IONATVS 3 meses atrás
@5000mahmud From the very beginning it was a proposed program that never actually got anywhere and that proposal included a LOT of different potential variants of the concept which R&D would have had to figure out which specifics were best had it gone farther. H-bombs (ie *fusion*) were one of the options mentioned from the beginning, because they existed at the time and would provide more thrust if it turned out the vehicle needed more "oomph". The two most commonly seen versions of the concept are the Navy's iteration of the concept as a potential future US military venture, which would likely have used specialized A-bombs designed from the ground up to be a pulsed nuclear propellant and a bare-bones, no-nonsense variant of the concept that could be built in a short timeframe under poor conditions through sheer overengineering and spite as a "in case we need to get off world TODAY"--that concept would've used retrofits from the US or its allies' existing nuclear arsenals, primarily H-bombs. Both were part of the Orion proposal for pulsed nuclear propulsion spacecraft, though: using fusion is not just something that appeared without precedent in more recent iterations of the concept (though as small "mini-mag" charges instead of full bomb-scale ones are new).
5000mahmud 3 meses atrás
@IONATVS The original Orion used fission, the modern mini mag variant uses fusion but is much weaker in terms of thrust.
Thạnh Phạm
Thạnh Phạm 8 meses atrás
Stupid science Science doesn't know Jupiter growing up to create the Sun. The Earth is about to have two Suns. The Earth is constantly expanding, the proof is that Hawaii volcanic lava is constantly spewing out
Danyal AG
Danyal AG 8 meses atrás
@Thạnh Phạm bro why you spitting bullshit??
Doug Carr
Doug Carr Mês atrás
Would graphene supercapaciters provide enough instantaneous energy to give ion engines enough thrust to make orbit changes, etcetera?
Jonathan Ortega
Jonathan Ortega 8 meses atrás
Super cool topic! I’m currently in my last year in nuclear engineering. Also I’m taking a elective called intro to space nuclear power. Boy there’s a lot to learn!
Angelo Alexander
Angelo Alexander 9 dias atrás
If there's one thing I've learnt about modern rocket development is that you really don't know till you try. It would be great if there was more funding for ideas like this
doliio volay
doliio volay 8 meses atrás
It is hard for me to comprehend how brilliant these people are!
Ck digital The Q of 6th
@Seth Huff the "eM driVe" if your trying to gain sober and say M-Drive, is a outdated logic to conceive a non-chemical rocket booster, but still visioned in a cone form, known as energy exirt thrust vs combustion fuel, its still possible to form it into a cone, but isn't required, the real form, *a sheet tile* with a megnetic geoscoptical gyro rod within the core of the craft vessel, which also can substitute magnetic shielding from solar wave, you WILL desire traveling in a craft of such security.
Ck digital The Q of 6th
@DSRReacts that threader, is not just far at the East edge, but over the bridge lolz ( your reply to @east bridge 144).
Seth Huff
Seth Huff 5 meses atrás
@Ck digital The Q of 6th No ThE eM DRivE VioLAtes TheRMOdynamICs!! I will hold out for safe FTL before reactionless drives, even though you would die of hawking radiation poisoning milliseconds after launch with our most realistic FTL model, which also requires a type of impossible "exotic" matter
Ck digital The Q of 6th
Very knowledge in the concept of nucular, they are indeed, but I wouldn't call them smart, fossel fuel mix with atomic is a pending bomb, however if they were promoting smaller rockets and fuel volume to amp ratio, then they are wise, "brilliant," that's if they figure the use of pure electric rockets and thermal heat, transfering to thrust. Leaving almost no required volume of storage.
DSRReacts 8 meses atrás
@Golden Age Creation The fuck are you talking about
Ans Ghazi
Ans Ghazi 9 meses atrás
The only engineering channel on youtube with references.
Aditya Shukla
Aditya Shukla 7 dias atrás
@أمادو Yes. He command his followers to kill, to loot and eat sand. Be shameless and unhygienic. They all also wear tinfoil hats.
Lucius 18 dias atrás
*Real references*
SpadeX 24 dias atrás
@أمادو .I don’t understand why you are advertising your religion on an engineering video, out of nowhere with no context whatsoever
Sam Featherstone
Sam Featherstone 28 dias atrás
Its for real 😳
Vladyslav Pidlisnyi
Vladyslav Pidlisnyi 28 dias atrás
I know only about the jojo ones
James Olson
James Olson 4 meses atrás
I remember hearing of VASIMR (a type of ion engine) with a game-changing mission profile: a 42-day trip to Mars, 6 weeks on the surface, and 6 weeks return to Earth. The entire mission can be completed with both Earth and Mars on the same side of the sun. If nuclear can achieve this 6-week trip time, it becomes feasible the same way. VASIMR hasn't proved out, so we may need the nuclear engine to pull off the mission.
Alex Zimmermann
Alex Zimmermann 2 meses atrás
@James Olson The ambition was to do do away with the NTR and use only a VASIMR as propulsion for everything but you'll never get the same thrust-to-mass-ratio with a nuclear electric VASIMR system.
James Olson
James Olson 2 meses atrás
@Alex Zimmermann Thanks, I also figured we'll need a fission reactor. Next would be what size, the power plant would not only have to supply the engines, a significant draw of electricity would go to the magnetic shield. The reactor would have to be launched as a separate module due to its weight, so our mars-bound ships would have to be assembled in orbit.
Alex Zimmermann
Alex Zimmermann 2 meses atrás
VASIMR works, we just need an energy source. That would be a fission electric generator with today's tech.
Ben Blakemore
Ben Blakemore Mês atrás
LOVE THE CHANNEL 😊 QUESTION FOR YOU.... When you were considering keeping hydrogen cold in space? Is space not freezing anyway? Would this not suggest that less energy is required to keep chriogenic hydrogen stored? KIND REGARDS BEN FROM NZ 😀😀😀
Mike Churvis
Mike Churvis Mês atrás
Hot and cold are properties of things. Space is not a thing. Space is the place where things are not. Therefore, space is neither hot nor cold. Put a hot thing in space and it'll stay hot until it radiates its heat away. Radiation comes out of things very slowly, so it's hard to cool hot things down. Put a cold thing in space and it'll stay cold until outside radiation hits it. There's a lot of radiation flying through space, so it's hard to keep cold things cold.
Jackson Green
Jackson Green Mês atrás
Ay fellow kiwi ;)
Hudson Evans
Hudson Evans Mês atrás
Hey Brian, I had always wondered why we didn’t have nuclear propelled rockets as well since I work as a nuclear operator and see the huge benefits of a long lasting fuel for space exploration. But working in the industry for a few years now and seeing how the US designs and operates its reactors, I don’t think this would ever be possible. I’m not going to get a whole lot into it just because what I’ve learned is technically classified, but there’s a lot of good information put out by the department of energy. Especially when it comes to material sciences, studies on brittle fracture and thermal limitations of materials if you’re interested. But the video itself was super informative and really got me thinking. Plus wasn’t boring. You made science look cool!
Marco Gallo
Marco Gallo 7 meses atrás
Been re-watching The Expanse recently. Has there been any serious interest in fusion for propulsion? Or is that probably far away from being considered since we haven't figured it out for energy production yet.
Buxton 7 meses atrás
There's been plenty of theories about using fusion for propulsion but as you said there's not much to talk about until we can figure the basics of artifical fusion out first.
SB13X 9 meses atrás
Fantastic content, love the humanist optimistic approach, being positive about our species. Too easy to find negative regressive attitudes from those declaring they're doing the opposite.
Benjamin Brewer
Benjamin Brewer Mês atrás
There is an excellent hard science fiction book called “Saturn Run” by John Sanford and Ctein. It has the two nuclear drive options you have here racing to Saturn in about 2068.
Dylan Allen
Dylan Allen Mês atrás
I've seen this episode 1000 times almost literally and I've had the question, in a space to space craft that never lands, why not use all 3 types of engine in one place? Hydrogen isn't hard to store as water for long periods, though it would need place to be stored as hydrogen short term, the nuclear electric engine could also be used to create electricity for electrolysis, the oxygen released from the water can also be used in the space craft for air and perpelent, the water could be used as a coolant for nuclear electric, plus humans consume water. Over top of that, would the slower moving perpelent of nuclear electric not spit out a good base of waste molecules to push the nuclear thermal against making the whole craft faster?
Zack Mês atrás
I agree with you in that there are ideas that could combine different thrust technologies to make an efficient space craft. Basically, the best space crafts will have very complicated hybrid systems. It's a different future from popular science fiction where there is one magical engine that provides thrust, artificial gravity and shielding all while being the size of a van.
SpaceCat 3 meses atrás
6:08 I think it would be important to animate the charge neutraliser to, otherwise the positive ions would get pulled back and there'd be no thrust
Dave 17 dias atrás
You forgot the third major form of nuclear propulsion in space - nuclear pulse. Would love to see a video on that!
Chris Morris
Chris Morris 5 meses atrás
Your level of research is astounding!🙌🏼
Robert Johnson
Robert Johnson 8 meses atrás
This makes me wonder if H3 (Hydrogen 3) will actually be something used as a propellant... Edit: Wouldn’t using heat sinks for the nuclear based engines be more useful? I mean don’t dump them into space obviously but I’m saying have it run on a few or more heat sinks at one time then put them outside for them to cool down while the other heat sinks are doing it’s job and when both have reached the satisfied temperatures (one set is hot and the other is cold) swap them again using an automated system?
Hari Petrov
Hari Petrov 8 meses atrás
Hey Real Engineering, I was wondering can you make a video on agricultural machines? Such as the big Combine Harvesters or big Tractors?(Asking about the big ones since they might be more interesting, but I might be wrong)
Dan Banowetz
Dan Banowetz 3 meses atrás
Very nice video! One mistake, you said Helium is 2x heavier than Hydrogen. It's 4 times heavier. Atomic number is 2 vs. 1, but atomic weight is 4 vs. 1
Colin Warn
Colin Warn 9 meses atrás
Surprised you didn’t talk about it here, but if you throw out the assumption that your nuclear core has to stay in the solid form, you can get specific impulses of up to 7000s with thrust to weight ratios of 1-5. Recently did a presentation on this at an AIAA conference for anyone who’s interested:
Kenneth Ferland
Kenneth Ferland Mês atrás
@The Infidel Actually conventional communication satalites are pushing the developmnet of ion engines and solar arrays to the point where we will eventually be able to make a large tug vehicle adaqute to do human missions without any real extra development.
Kenneth Ferland
Kenneth Ferland Mês atrás
A non-solid core is a complete non-starter for launch and development. The solid core tests spewed radiation and core fragments like roman candles, no one is going to do that again which is why the braindead congressionally mandated research which comes from nuclear hype not real enginering evaluation is just going to used to make computer models.
Tanner Wheeler
Tanner Wheeler 8 meses atrás
I feel it’s not a waste of resources per say but at our current technological level it is highly inefficient but if we do it more it’s inevitable it’ll get more efficient or atleast I can hope lol I mean worse case scenario we’re stuck on a firing earth and just have to die
Tanner Wheeler
Tanner Wheeler 8 meses atrás
@The Infidel oh yeah it’s absolutely stupid and insane but in theory it would be an extremely harmful and inefficient form of space travel
Colin Warn
Colin Warn 9 meses atrás
@Atomicskull nuclear submarines would be considered an instance of nuclear electric propulsion (using nuclear fission to generate electricity to generate thrust) as opposed to nuclear thermal (using heat transfer). Above video describes the pros and cons.
Jas Beeby
Jas Beeby 2 meses atrás
@Real Engineering, would it be possible to utilise both Ion drive engine as well as normal combustion engine that we are using in this day in age, when it comes to putting both engines on one connected space craft? Using the more powerful engine (Ion Drive) to get most of the way to Mars but then using Normal Combustion engines or nuclear engines to slow down the space craft enough to orbit mars? (also I could be entirely wrong, just an idea though)
Alex Zimmermann
Alex Zimmermann Mês atrás
​@Kenneth Ferland The problem with that is, you may want to avoid lengthy exposure to radiation belts on planets with a strong magnetic field. For unmanned spacecraft, ion drives are perfectly sufficient.
Kenneth Ferland
Kenneth Ferland Mês atrás
If your trying to do a single high thrust injection burn your best bet is to use Hydrazine. Even better is to just use the ion-engine, they CAN do an orbital capture, it just has to be a spiral rather then a single burn, the loss in efficiency from Oberth effect is more then made up by the ISP of the engine. The only thing we need high thrust for is lifting off of planetary surfaces, anyone who claims they need high thrust to go between orbits is lying to you.
Alex Zimmermann
Alex Zimmermann 2 meses atrás
That's the optimal solution
Max Headrom
Max Headrom Mês atrás
Thanks for the video! The Flandro dude started the most effective space exploration program in human history. Thanks!!!!
carmatic Mês atrás
what if you used the gas going towards the ion thrusters as a coolant? especially if you used a heat pump to superheat the gases, perhaps approaching a plasma state where there is no longer any need to spend energy for ionizing the gas
Michael Levine
Michael Levine 19 dias atrás
Gas-based nuclear thermal engines can have significantly higher specific impulse. Particularly open-loop cycles.
Thinkwa -
Thinkwa - 9 meses atrás
How do you put out so high quality content in just 2 weeks!? I love these videos, they are so informative but still interesting. Keep up the great work!
Sanket R
Sanket R 9 meses atrás
@Real Engineering I read this with your voice in my mind.
Gereon 9 meses atrás
Many of the more educational oriented channels have insane video output, kinda making me jealous about their work ethics ^^
Real Engineering
Real Engineering 9 meses atrás
It’s more like a month. While the video is in production I’m writing the next one.
Shandrakor Mês atrás
I was expecting a mention of another difficulty of dealing with nuclear and spacecraft, IE what happens if a challenger type explosion. Same problem with using rockets to toss nuclear waste into the sun.
FerrowTheFox Mês atrás
Pretty much not an issue. We're talking about using a reactor for orbit-to-orbit applications here, not for lifting stuff out of the gravity well. So, during launch the reactor sits inside the payload fairing and is subcritical (i.e. inert). Only after the reactor module is connected to the transfer vehicle is it turned on and criticality achieved. Unused fuel rods are not really radioactive (I've had fresh fuel pellets in my hand), it's the nuclear fission reaction that produces highly radioactive waste products. It's this used fuel you need to be mindful of. Thus, even if the rocket launching our fresh reactor failed, we'd just end up dumping a few tons of uranium fuel into the ocean. We've also been launching probes with radioisotope thermoelectric generators (RTGs) for decades and only had a couple of incidents with them burning up upon reentry, with no resulting contamination. They're also designed to survive a launch explosion. So. I'd say not really something you need to worry about, as long as general safety standards are observed.
Ayush '
Ayush ' 8 meses atrás
You can explain these topics so clearly, I wish my school teacher was half as skilled as you. I haven't even studied this part of mechanics that well yet, but was still able to understand most of what you said reasonably well.
Ali Bektaş
Ali Bektaş Mês atrás
bahsettiğin fikirler şuanki seviyemizden ileri olabilir. ancak yıldızlararası seyahat için yetersizdir. umarım yakın bir zamanda yıldız gemisi atılgan düzeyinde bir gemi yapacak bir dahi dünyada doğabilir. bekliyoruz..
J K 2 meses atrás
Just waiting on space weapon treaty changes to unveil tech like the NTTR for launch systems. Huge payload mass fraction on these vehicles, can't wait Edit: Bucknell's nuclear thermal turbo rocket
Dr Gamma D
Dr Gamma D 9 meses atrás
These missions captured my imagination as a kid. Now I have 7 interplanetary mission under the belt. You just gotta go for it.
BitComfy 3 meses atrás
@Evike95Air We can no longer argue with you. Only the future will tell the truth.
Evike95Air 7 meses atrás
Wake up sheeple, "Space" is fake, the "Universe" as produced by Hollywood/Universal Studios is non-existent and entirely make-believe! Isaac Newton (Isasick Newbton) is a massive, great deceiver similar to the foolish shill Albert Einstein (Allburt Shillstein) The wise inventor man Nikola Tesla knew that the World/Earth is a plane, not a planet. Tesla said: "Earth is a realm, it is not a planet. It is not an object, therefore, it has no edge. Earth would be more easily defined as a system environment. Earth is also a machine, it is a Tesla coil. The Sun and the Moon are powered wirelessly with electromagnetic field (the aether). This field also suspends the spheres (The Sun and The Moon) with electromagnetic levitation. Electromagnetic levitation also disproves gravity because the only force you need to conquer is the electromagnetic force, not gravity. The stars are attached to The Firmament (The Dome Ceiling of our enclosed World!)." Don't beLIEve in the impossible, non-existent, make-belief; that we live on a mysterious, magical traveling ball in "space" ! The famous respected literature artist, Mark Twain, said that: "It is easier to fool someone than to convince them that they were fooled" The flat-out truth is that gravity is a make-belief idea, the "force of gravity", is non-existent. We live on a stationary, level plane that follows with the laws of: Mass: amount of matter (protons, neutrons, and electrons) contained in atoms of a certain material Density: the relative mass of an object (when compared with different objects) based on the amount of mass per unit of volume/space of that object Height-energy Potential: amount of "rise/lift work" needed or required to bring an object up to a certain height (calculated based on the object's mass and the object's final resting position height) Conservation of Mass and Energy: objects have a certain amount of mass that can't be altered (destroyed or appeared) and the energy/work that is transfered onto an object will always continue to act on the object until being absorbed or stopped by something (that counter-acts or cancels-out the given energy/work transfer) It is logical reason that objects will fall down to a stopping point after being thrown up to a certain height because of the Law of Conservation of Energy, not because of a made-up, silly, non-existent, magical force known as "gravity", that delusional, foolish people beLIEve in!
Dr Gamma D
Dr Gamma D 7 meses atrás
@Evike95Air you know I know flat earth is an illuminati false flag conspiracy to discredit God fearing ppl and prevent them from exposing the globalist scum.
Evike95Air 7 meses atrás
@Dr Gamma D It's impossible for water to magically curve around and stick to a spinning and traveling ball of any size! If a downward-vector holding force known as "gravity" that could hold all the water and land in the World "dead-still" onto a magical spinning, orbiting, and traveling ball/globe actually existed then the atoms of air above the cloud-heights would not be able to stay up afloat and free that high up at all; neither would gases all rise up to the inner top-side of all "empty" airless containers after the gas has been injected into the empty airless container (no matter the variations in: the side and/or angle of injection; the speed of injection; the surrounding environment's brightness; the elevation/altitude of the surrounding environment; or the temperature of the surrounding environment! The World/Earth IS indeed flat exactly as the Bible describes! The reason the sky is blue is because "Outer-"Space" is water! Here's the Flat-out Truth shocker! Have a view for yourself before Illumintube might delete the video!
Dr Gamma D
Dr Gamma D 7 meses atrás
@Evike95Air Why don't you just go to Antarctica and find out what's on the other side? If you look at the SRTM radar image of the surface of the is in fact the ONLY image of the entire globe in a single coordinate system, moreover it used interferometric radar (like a hologram). It's a 3D image, and guess what? It's round. The data are beyond the simulation level of any computer, it was written to tapes that filled the shuttle cargo bay. We took those tapes straight to analysis, and the earth was round. It simply could not have been faked by anyone or any government. Moreover, me and my homie place targets around Earth at locations known only to use, with a precision of around 1 inch, and guess what? They were in the would be impossible to fake that in a simulation. Search online, I think the data are free. You could also use a GPS, travel in a large triangle. You will find the angles don't add to 180 degrees. If you understand geometry: that cannot be faked on a flat's is mathematically impossible to do it for an arbitrary triangle.
snapicvs 8 meses atrás
With an ion engine, electrons get removed from xenon atoms to ionize them and the xenon atoms then get projected out the engine at extremely high speed. But what happens with all those electrons that get removed from the xenon atoms? Does the vessel end up accumulating an insane static charge?
NigelWigglwattle 27 dias atrás
I'd imagine the charge is so strong it could fry a bird instantly if it did lol
Daddyoh Mês atrás
There is a company in India that is developing small reactors using nuclear salts instead of rods. Would that be a process that would work for propulsion to Mars?
Johnnyloco 7 meses atrás
Wow! I'll need to reference this later as I've pondered this mass to thrust ratio for years now. I've been saying since the 70's we will never get anywhere in space if we barely have enough room for three grown men and a enough supplies to live 10 days. And Ive always hoped our government would come straight out and say they have anti-gravitaional technology learned from extraterrestrial origin. What else is there?
ARTIE CHAVEZ JR. 8 meses atrás
Thanks for sharing this video, I certainly learn scientifically.
Abraham Fernández
Abraham Fernández 9 meses atrás
These guys do a great job. The way they explain and give references make their videos so complete. People like me need this channel. 🚀🚀🚀
meesalikeu 8 meses atrás
good work here nigel. clear and understandable. looks like we will end up with a hybrid dual engine unless someone can solve the hyrdogen storage issues.
tim kahn
tim kahn 20 dias atrás
the payload issue can be overcome just by fueling up and building in low earth orbit then taking off on the trip too mars.
discombubulate 2
discombubulate 2 2 meses atrás
i think the answer will be with fusion tech rather than fission. i understand when we get it working it will be a monstrous undertaking to build something like that in orbit. but then again so will building a ship the size the video suggests.
Coyote27981 Mês atrás
aren't there some honeycomb materials that store hydrogen in solid form, and release it when heated? in space heat management is usually a problem, if you could use that heat to release the hydrogen from its storage, you could kill 2 birds with 1 stone.
The Ethicist Philosophy Show
These prequel episodes of "The Expanse" are getting really good!
Noah Blackford
Noah Blackford 8 meses atrás
@Helium Road when is season 6 out?
Helium Road
Helium Road 9 meses atrás
@Rathbone No but unfortunately, Professor Epstein did kill himself...with his new drive.
Rathbone 9 meses atrás
@Z Z I don't want to spoil you the whole season in comments, but no, the story isn't over and imo there's a lot to look forward to.
Z Z 9 meses atrás
@Rathbone shit! So the story still isn't done? I didn't watch it yet
Rathbone 9 meses atrás
@Z Z Yes.
Aloner Punk
Aloner Punk 16 dias atrás
Does everyone have this gut feeling of going to the far reaches of space to explore. All the mysteries of space intrigue me so much.
Michael B
Michael B 2 meses atrás
I love aerospace and your channel, but imho interplanetary travel is like fusion power: we’re almost always there, but nothing has really changed since the beginning (except the cgi is slicker and rockets shinier). Consider: 1. We can still only barely get into LEO (payload/total mass) and even that is difficult. 2. The vastness of space is unimaginable - even to the near objects. It took Voyager 40 years to exit the inner solar system. Let that sink in for a bit - 40 years. 3. Space is hostile to human life, lethal is probably a better word. Forget the extreme temperatures, total vacuum or that it takes about two football fields of land to feed 1 person/yr. The radiation will kill you in short order and at the velocities required, a snowball has enough kinetic energy to rip any tin can we can launch into shreds. ISS astronauts are time-limited due to radiation exposure and the ISS has been struck several times by objects the size of a grain of sand that caused damage - and they’re still in the protective envelope of the Earth’s magnetic & gravitational fields and a bit of atmosphere. The only solution to either of these problems is more mass. Now revisit #1, do some delta-v calculations and you’ll soon find yourself in the red. Gravity is a bitch! I encourage all and more aerospace research because it often results in useful stuff like Velcro or the longer-lasting lightbulb and cuz it’s way cool. And, hey slicker cgi ain’t necessarily a bad thing.
Lima Bravo
Lima Bravo 8 meses atrás
A combination of nuclear electric and the VASIMR engine would result in a viable spacecraft for exploring the solar system and the specific impulse can be further raised on the VASIMR by injecting heavy water into the exhaust plume just before it exits the magnetic nozzle
C Mês atrás
I wonder if it's possible to make a liquid uranium solution and store it stable-y in a tank and then pump it into a neutron chamber for propulsion
Augmuse Mês atrás
This is a great channel where I feel smarter after I watch an episode.
Uncle Nuar
Uncle Nuar 13 dias atrás
What if we just send the payload (food, oxygen) first to specific places along the way to Mars.
Suburp212 Mês atrás
Fantastic video. Thanks. Why are we limited to Insert Gases for ion electricity? What about sodium, mercury, sulfur, iron or tungsten?
Rean Schwarzer
Rean Schwarzer 8 meses atrás
I'm hoping we figure out fusion soon enough that we can seriously consider fusion rockets. In particular, the ability to simply direct fusion exhaust out a nozzle is very attractive in my opinion. If we are lucky, we may do this in my lifetime.
Tyo - Tynastic
Tyo - Tynastic 9 meses atrás
The 3D models for the Mars spaceship look gorgeous
Milaan Patel
Milaan Patel 8 meses atrás
@GBA811 I thought the same.
Zefnoly 9 meses atrás
If you look closely many of the parts (including the exact gravity ring design) looks exactly like the models Nertea (a kerbal space program modder) made for his kerbal space program mods.
vijesh kumar
vijesh kumar 9 meses atrás
@GBA811 the hermes is just beautiful and cool
HiiighAsAKite 9 meses atrás
@GBA811 pretty sure it’s lots of different spaceships mashed into one 11:55 Amongst other things, the Hermes is much shorter
GBA811 9 meses atrás
I believe is based in the Hermes spacecraft from The Martian.
Joe Cater
Joe Cater Mês atrás
by my thinking though, each molecule would contribute m. delta v to the crafts momentum... no? So, if we accelerate a molecule to a velocity that is the same as a lighter molecules velocity when both are multipled by their masses.. we should theoretically achieve the same change in the crafts momentum per molecule, regardless of the mass of each molecule? Unless there are additional inefficenies in heating such as a high specific heat capacity or change of state.
Molla Nafim Muthaki
Molla Nafim Muthaki 6 horas atrás
Nicely explained, thanks ❤️
Prajwal Pramod
Prajwal Pramod 6 meses atrás
This is all great, but I think we need more long term solutions. Ion propulsion might work out fine for Mars, or even Jupiter. However, once we start aiming for more distant planets like Saturn, Uranus, and Neptune, even ion propulsion spacecrafts might turn out to be too slow.
thibalt 2 meses atrás
question: isn't it super cold in space? at what temperature does hydrogen have to be stored?
marko stathis
marko stathis 8 meses atrás
In 1973 my father was recruited by Dr Stanislaw Ulam to work on a continuation of parts of the original Project Orion when Dr Ulam's team was stuck on an equation in 1974. My father solved that equation in a few weeks and was forbidden from talking about this and was not allowed to travel to any Eastern Block nations from 1974 to 2004. He was offered a chance to teach at the Polish National Academy of Mathematics in 1976 but the US Department of Energy would not allow it.
Hash Hacker
Hash Hacker Mês atrás
@marko stathis Oh ok, thank you
marko stathis
marko stathis Mês atrás
@Hash Hacker Thank you. No, I do not have it, but the former head of the UNCC Math Dept Dr Joe Quinn might know. I do not think the current Chairman Dr Khan would know.
Hash Hacker
Hash Hacker Mês atrás
Man, sorry about your father, but did he give you the equation? Do you have it now?
marko stathis
marko stathis 2 meses atrás
@Chris Hutson Thank you. It is tough. As soon as the Estate issues get settled I am going to start a Scholarship in his name at UNCC.
Chris Hutson
Chris Hutson 2 meses atrás
@marko stathis its tough when a guy looses his Dad, especially if you were close. Its been 6 months now for you, I hope you're doing well with it all.
FairySox 3 dias atrás
I just thought of a way we may be able to overcome this and propel objects massively faster, If there's an astrophysicist reading this , or anyone that is a little bit of a computing Genius... then please message me. Might be stupid but I think it may just work !
WWobbles 2 meses atrás
could we use nuclear thermal (or conventional boosters) for exiting earth and then have nuclear electric for in-space propulsion?
WWobbles 2 meses atrás
or just build in space? (and use mini thrusters to safely separate from the space station)
D Tibor
D Tibor Mês atrás
They should build multiple stages of ion acceleration, that would bring down fuel consumption by a massive amount
Matthew Sermons
Matthew Sermons 8 meses atrás
My hope is to see Linear Magnetic Accelerators on the Moon. I see this as a practical way of getting mostly supplies to Mars and beyond. To slow down the "Packages", I envision a series of cells at the front of the craft consisting of alternating layers of Lunar Regolith and explosive charges. Basically shedding mass in the direction of travel should take the velocity down to a manageable level.
Sam Picken
Sam Picken 8 meses atrás
For the hydrogen problem, what if they store it as water, that way you’ll need a lot of it and it’ll be heavy but that also means that it’ll be stable and you can split it for oxygen and hydrogen when needed, and not only can that oxygen be used by the crew but also as a chemical thrust which may possibly speed it up even more
Matthew Matthewq
Matthew Matthewq 8 meses atrás
The other thing is the water can be used as part of the radiation shielding.
Bo McGillacutty
Bo McGillacutty Mês atrás
"Gravity assist" is something of a misnomer--should be called say, momentum assist as that's where the extra energy is coming from, the orbital energy of the body.
warren010h Mês atrás
So much of this goes over my head but damn is it fascinating!
Timothy Gooding
Timothy Gooding Mês atrás
Something I just thought of: the Saturn 5's F1 engines had a poor isp of around 260, similar to the isp of nuclear-thermal nitrogen. But one advantage is the possibility of an air-breathing engine while in atmosphere. Being able to take advantage of the atmosphere as propellant before switching to onboard, optimised propellant like hydrogen could be a good stategy. Because the power is nuclear the on-board power is no longer the issue, it's on-board mass. And most of the energy usage is getting off of earth
Kenneth Ferland
Kenneth Ferland Mês atrás
The portion of a rockets flight profile that in atmosphere of any density to be of value for air injestion is tiny, the complexity of the rocket and the means of scooping air simply arn't worth it.
Niohimself Mês atrás
Speaking about lighter propellant - what if we used electrons and positrons (as two separate streams)? Positrons are much, much lighter than protons.
o0alessandro0o Mês atrás
So... Obvious question: are we looking into different ways of storing that hydrogen? There are various forms of hydrogen storage that are rather well-suited for long-term applications; in particular, we habitually store short-chain hydrocarbons (methane especially), and water, for years on end. Water is already in a low-energy state, of course, so it makes for terribile chemical fuel, but we don't care too much about that, since we aren't using it as chemical propellant anyway. If they could be split them via some kind of heat-driven catalyzed reaction (using the nuclear core to provide energy in the form of heat), we could then harvest the combined carbon and oxygen as CO2, vent them or store them for use in cold-gas maneuvering thrusters, and use the hydrogen for propulsion. The obvious disadvantage is weight: methane lugs around 12 kg of carbon for each 4 kg of hydrogen, so out of 16 kg of methane we only get 4 kg of hydrogen, a full 75% waste, and water is even worse, with 16 kg of oxygen for every 2 kg of hydrogen, making it a... Massive disadvantage. Unless we manage to use them for ion propulsion? They would probably nom on the grids like crazy, and provide one tenth the thrust of xenon, however. Still, finding ways to conveniently store hydrogen seems like a priority if we want to use it for space propulsion over long periods of time. Cryogenic hydrogen is clearly not going to cut it.
CrimsonBlitz 8 meses atrás
Genuine question. Would a Carbon nanotube kind of mesh be able to stop hydrogen molecules from permeating through the material? or is the carbon nano structure still too large and allows hydrogen to just go through?
Rudolf Wickond
Rudolf Wickond 8 meses atrás
3:12 You dont need fuel to decelerate when landing on Mars. Mars has an atmosphere wich can take over the role as energy absorber (eg heatshield). This logic applies to all planets and moons with an atmosphere (Earth, Venus, Titan)
The Uncertain Future of Jet Fuel
Visualizações 929 000
The Entire Soviet Rocket Engine Family Tree
Don Omar - Sincero (Official Music Video)
The Missing Link in Renewables
Visualizações 1 500 000
The Insane Engineering of the X-15
Visualizações 4 500 000
Is The F-35 Worth $115 Million?
Visualizações 5 000 000
Mars Mission Update: June 2021
Visualizações 1 000 000
The Nuclear Option
Visualizações 570 000