NASA Conducts First RS-25 Rocket Engine Test of 2018

[@Luminite-hx3zs]

I'm surprised the building didn't take off.

[@johnculver6994]

Obviously the building weighs more than the thrust. By quite a lot actually.

[@CritikillACClaimed]

John Culver Oh wow! Jeez man you've really done your homework on the matter

[@Austone1]

John Culver woosh

[@blackace7782]

Well considering the stand was built to accommodate the F1 engines I'm pretty sure it can handle a dinky little RS-25

[@mike-thebike5757]

Suprised the bulding not explodet ... they should take russian solid booster mor relayebal

[@adamkendall997]

Let me check the comments to see where NASA messed up and how they can improve.

[@tarheelblue63nc25]

Adam Kendall good one

[@ceboz]

👍🏼

[@blastfiendsunite420]

No shit right lol

[@ryanjones9498]

Should have been wider at the bottom, more wider more faster

[@parkerbranaa5718]

Haha

[@deusexaethera]

Two thoughts: 1) I would hate to be the exhaust duct underneath that engine. 2) I would hate to be the supports above that engine that keep it from ripping off the top of the building.

[@uncolorr]

at least the beam the engine makes looks so fucking cool

[@joshhayl7459]

🟦 I don't think I'd wanna be anything inanimate bad enough that I'd wanna HATE in order to be-it. Besides,....WHO would you hate?... and WHY would you hate 'em?......

[@Andrewlang90]

So can I mount this on my Civic?

[@wyattb3138]

Andrew Lang. I think

[@lafterk]

You would probably catch up to Elon's Tesla if you did ...

[@nicolasdiaz5058]

You can put your civic inside the nozzle if you want...

[@borgesguerardi]

Why would you do that? You already have.. VTEC

[@jul.smhhhh]

K Lichtner pff nah probably to The Tesla on mars that’s a yeah

[@MrAlexs888]

7:59

[@joshcruz4268]

My g

[@ChannleDDD]

EARTH IS seriously FLAT you must not be a truth seeker because flat earth is nothing but lies and Incompetence

[@toasterbathboi6298]

EARTH IS seriously FLAT no it is not.

[@toasterbathboi6298]

Jared Frankle both of you are wrong.

[@MaynardFreek]

Thank you

[@radosbarner1734]

Sometimes you realise just how insane this rocket science stuff really is. I mean, the saying "It's not rocket science" is a worthy comparison to pretty much everything, because I can't think of a single other field where you need to control an explosion caused by an insanely powerful chemical reaction, and that's just the first step.

[@АлексейКиселев-д2г]

Now it's clear where the clouds come from on Earth)

[@jean-paulle-frappeur9266]

@Ozone you are the dumb bro, you can't even understand a joke...

[@bunnygaming3713]

@Ozone you are dumb

[@75yomu]

@Ozone you are dumb

[@alanmaclaren4118]

@Ozone you are dumb

[@gianrhey1350]

hi @allan maclarren

[@EEEEEEE354]

It amazes me how anything can handle this much power and heat. Incredible engineering

[@wally7856]

The fascinating thing is that if you touched the outside of that engine nozzle while it was at full power you would get immediate frost bite on your hand as it's at cryogenic temperatures a mere inch away from that heat.

[@eicydee3212]

I tried this as a joke to some mechanical engineering colleagues, was received pretty well: "Imagine you have to design a pump that can pump about a thousand liters of fluid per second. And produce 200 bar pressure. Also, the fluid is -250 °C cold. And the entire pump has to be quite lightweight, shouldn't weigh more than 1-2 tons!" They are like "and what else from Santa's wishlist do you want?" until I tell them that all these things are standard for rocket engine fuel pumps from decades ago. This is an absolutely incredible feat of engineering.

[@wally7856]

@@eicydee3212 You forgot to tell them they could use liquid oxygen and liquid hydrogen to power said pump and the exhaust could just be dumped wherever. ;)

[@wally7856]

@@eicydee3212 As an added note. That pump "IS" the rocket engine. The combustion chamber and nozzle are just some necessary last minute addons. All the engineering goes into that pump, monkeys can design the rest.

[@vinceb8041]

The RS-25 is such an impressive combination of elegance and raw strength. Amazing!

[@cynicaltexan9639]

It also cost $50 million per engine compared to SpaceX raptor at $2 million

[@blackmesa232323]

@@cynicaltexan9639 Not really a fair comparison. The RS-25 has more than 25% the thrust and efficiency the raptor engine currently has. Moreover, it burns hydrogen and lox instead of the raptor engines methane and oxygen. If we're doing cost per kilonewton they're not too far apart in terms of cost considering most engines going on the SLS have already flown on the space shuttle, and not including the fact cost of the engine has yet to go down due to economies of scale since NASA is just now fully assembling SLS. You only need 4 RS-25s for SLS whereas starship needs 31 raptor engines. Is the raptor engine impressive? Yes. Is it cheaper than the RS-25s? Yes. Does it have the thrust, efficiency, and excellent service record of the RS-25? No. It hasn't even flown yet. To date, the RS-25 is the most efficient engine per kilogram of fuel and oxidizer ever flown.

[@cynicaltexan9639]

@@blackmesa232323 ok. fair enough. I am going to assume SpaceX track record witht the merlins will hopefully transfer over to the raptor. $64 million vs $200 Million for engines is still better and I would assume having more engine would allow for greater margins or failure in the engines. (If one or two raptors fail how likely would that effect the mission when you have 29-30 other engines running at peak. versus 1 or 2 Rs-25 engines failing that would creates critical loss to the system.)

[@blackmesa232323]

@@cynicaltexan9639 Well firstly the 2,000,000 optimistic figure for the raptor engine is still up in the air at the moment, and is the cost for manufacture without including R and D cost. Second in the RS-25s long and storied service record, only one engine has failed in 405 uses with no critical mission failures due to the engine. It's also no guarantee that raptor will have the reliability of the Merlin engine since it uses a different fuel and turbopump assembly system. The Merlin is open cycle with RP1, and the raptor engine is a full flow, closed cycle methane rocket design which is a turbopump assembly that has never flown on an orbital class rocket and incredibly complex, which means issues are likely to come from the fact it's thd first of its kind. I have no issue with SpaceX and love what they're doing to advance space technology, but to use it also dismiss the work of Aerojet Rocketdyne and NASA on what is by all accounts a reliable and amazing engine is counterproductive to advancing enthusiasm for space exploration.

[@elephant35e]

@@blackmesa232323 "Most efficient engine per kilogram" Is efficiency per mass relevant though? The RS-25 burns hydrogen, a super light fuel, so of course it's going to be super efficient per fuel mass. Isn't efficiency per volume of fuel what really matters?

[@KSparks80]

That bird that takes off at 11:11 looks like he has a hard landing!

[@ferrallezz5246]

Yeah lol.

[@pan4909]

Rip

[@adamkerman475]

Poor birb

[@ScubaShark--8964]

*she

[@ScubaShark--8964]

I'm her mom.

[@ohyeah1994]

8:20 - Those cars and trucks: "Yeah, yeah, whatever. At least my engine doesn't shut down after eight and a half minutes."

[@muffinman8744]

Yeah but they can go where your car can't take you.

[@jfan4reva]

10:00 test stand workers get their cars steam cleaned. Spouse: "Did you stop and wash the car on the way home?" Test stand worker: "No, we did an engine test today."

[@hydrogenbombb]

Lol, I noticed that too. Good thing for them the engine didn't blow up.

[@typicalfish1116]

I'm gonna post this to r/youngpeopleyoutube. Jk I'm too lazy

[@anthonysaponaro6318]

LMFAO and or sand blasted to a nice steel finish

[@lessevdoolbretsim]

"But why are the tires and dash melted?

[@markschofield576]

I think the 2 dudes at 8.25 missed the "get the hell out of dodge " announcement !!

[@jfrtbikgkdhjbeep9974]

damnnnn 😳

[@nathanyang3288]

If there is goPro

[@GFSwinger1693]

I saw that too but I don't think that is what it was. It looked like a gate moving with two identical signs on it. Their hearing would be trash if they were anything that close.

[@deiu9999]

Yep, these are 100% not people, it is a gate moving.

[@Smile4Luyten]

yeah but its a gate

[@zodiotekgaming]

That's a very nice clean burn, almost as if the flame is hovering in mid air below the nozzle too. This is why I love science and engineering

[@euanmorse]

That's the Mach Diamond :)

[@listerdave1240]

The RS-25 is a great engine, even by today's standards. They have proven reliability, one of the best ISPs of any engine and self adaptability from sea level to vacuum use. What a pity they will just be used once and discarded like an empty beer can.

[@UltEvo]

But very expensive unlike the raptor engine

[@nilakshichangkakati3354]

I thought the price of the engine was rs 25 😂😂 i was shocked

[@RoveRomania]

I never understood how can it be efficient at both sea level and vacuum. Same for the EU Vulcain engine. Pls explain

[@la_potat6065]

Radu Ro kzbin.info/www/bejne/kJ6agYGigJp0mdE I believe is has to do with the particles’ exhaust velocity, first few minutes of that old vid pretty much explains it. The lighter the particles, the faster they are ejected, so higher thrust per fuel burned. In this case we have very light hydrogen fuel ejected from the exhaust, as opposed to the heavier Methane or RP-1 fuels. RS-25 is the only high tier closed cycle engine that uses hydrogen fuel (there is the RD-0120 that is the slightly better russian equivalent of RS-25 but it’s retired), while BE-4 and Raptor use Methane and the old and pretty reliable RD-180 or RD-191 use RP-1. Someone should make a Hydrogen fuelled full flow rocket...

[@SoI_Badguy]

@@UltEvo Expensive, yeah... but SpaceX is also using 31 individual engines. Then again, they reuse them. So that offsets the cost.

[@nlo114]

There is a fascination that makes me want to get as close as possible to experience the might of this machine. At the same time there is a dread, or terror of getting too close and turning to a crisp in less than the blink of an eye. Awesome, just plain awesome.

[@jackiesingleton2351]

nlo114,,,,, The F-1 engines on the Saturn V had an operating temp of 60°C! Inside it was about 6000° but due to the cryogenic fuel being pumped around the "bell" exhaust nozzle it had an overall temp of 60° Centigrade. I found that absolutely amazing when i heard it. So inside the exhaust gasses are hot enough to melt any known metal but by pumping the liquid oxygen/Hydrogen around the outside to cool the engine, and also heat the fuel, it was able to not melt the nozzle. So this controlled explosion, putting out millions of horsepower and exhaust gasses that are thousands of degrees was basically just "Warm to the touch". 60°C. Crazy! P

[@sdimartino]

Jackie Singleton I'm guessing the surrounding area is a little warmer than that, though.

[@CodGeronimo]

I'm pretty sure the acoustics would crush your insides before you got even close to feeling warm :P

[@nlo114]

CodGeronimo - you're probably right there. I worked in the space industry for a few years, building satellites. All of the modules were vibration-tested to 20g over a specified frequency range and duration. The structural vibration is very low, because all the rotating parts are well balanced. The primary source of vibration is acoustic. Some modules were spec'd to 50g and were a hell of a job to build them to survive. It can get a bit wearing after 2 weeks building something to have it returned broken.

[@CodGeronimo]

That's super interesting, what kind of satellites did you work on?

[@lessevdoolbretsim]

Now that's a clean burn.

[@Matthewdoesmc81]

lessevdoolbretsim mostly water as exhaust

[@kinglylolz6581]

@O R the water is from both, hydrogen and oxygen fuels make water but most of the water is from the noise dampening system

[@indicus9075]

8:25 rip all those cars paint jobs that just got steamed

[@kvasir121]

All of these armchair rocket scientists in the comments need to shut their mouths, NASA does great things, and always will.

[@2shoestommy]

Most SpaceX 'cultists' do know all that.

[@supernoodles908]

@@RazgrizDuTTA I'm just glad spacex is creating more interest in space exploration. The more the better

[@jasonviper8512]

NASA= never a straight answer hahahahahaaaa hell they lied when we FIRST went to the moon, and too all the people "YES HUHHH WE DID GO TO THE MOON WHEN THEY SAY WE DID DERRR" OK then explain in the picture ONLY 1 SHADOW when there should be more shadows, i mean it is very simple how LIGHT works.. get a flashlight and test it

[@megabowzer100]

@@jasonviper8512 lets also bring space x into the same corrupt equation as nasa who persist to throw thousands of 5g satelites into space without consent from the public !! mind control satelites that fire low frequency waves at earth affecting our own energy fields for their benefit !!

[@jasonviper8512]

@@megabowzer100 i would believe that, i mean EVERY CELLPHONE COMPANY and the government wants 5g out for the public so WE ALL can get fucked up in our bodies, and imo they will make some kinda "pill" to counter-act the effects of 5G. just plain n simple WE DON'T NEED IT. but plenty of companies have proved they DONT CARE about the customers they do whatever they can to stop a fuck up from happening again "note 7" also on a different subject CLIMATE CHANGE is also another scam, no vehicle gas/diesel/electric NONE ARE GOOD they all got ONE thing in common a "battery" and where u get the stuff to make a battery..... FROM THE EARTH, yet these "climate change" pos morons are driving in/flying in to talk how 'we can do better for our earth" hahahahahahaaaa. sorry if my grammar is not the best.

[@SFAPowerhouse]

This is always beautiful to see.... The future of exploration in space for a new generation to gaze in awe and wonder. I really hope to see the Orion spacecraft go on a mission real soon!

[@MaynardFreek]

Wow! The nozzle cone froze over immediately after the engine shut down. Interesting

[@blastfiendsunite420]

The color on the nozzle 😍

[@ramoct25]

The cone is frozen For its operation temp. What a master piece

[@rickanator65]

Everyone forgets that NASA saved spaceX by awarding Elon a 2 billion dollar contract.

[@nicknahme4180]

.. you mean to say, nasa used taxpayers dollars to assist elon? especially since that 2 billion, never went to elon. it went to tesla, not spacex. soooo.. yeah. fail, dork

[@MasterBoim]

Elon owns Tesla and Spacex, thanks to that contract Tesla didn't bancrupt, instead they made a lot of success with it. Thanks to this Elon Musk had money for SpaceX developement.

[@fourcargarage888]

no one cares stop trying to throw down spacex everyone knows space x is better

[@woombus6385]

@@fourcargarage888 dude stfu hes not throwing down space x

[@ginger02231]

Four Car Garage why do you act like SpaceX is so good. Sure they have self landing rockets but people overhyped them like they have space tech. nowadays there’s SpaceX ‘cultists’ like you. I’m glad you support SpaceX but it’s not a trend. It doesn’t make you any cooler just because you support them.

[@ammiehnamte4757]

7:58 testing starts

[@irishpaddy555]

The sheer violence of engine start and shut down is scary… and to think that 3 of these used to do that at the same time… very cool video…👌👍

[@supermarioisacat]

The distance NASA engineers park their cars from an engine test is indirectly proportional to their confidence level in a positive outcome for that test.

[@artysanmobile]

Mario And inversely proportional to the quality of their insurance.

[@patrick4044]

Imagine. The testing site flew when testing the engine

[@Walter-Montalvo]

Curious engineer here: What characteristics are measured during test? Thrust, vibration in all 3 axis? Fuel consumption, tank pressure? Temperature at different locations on the engine? What parameters are modified during test? Fuel flow, pressure, fuel to oxidizer mix ratio? Do you measure the decibel level at different distances and how loud does it get?

[@udhi_gn3893]

Could be all of them... including the ones not mentioned (combustion chamber pressure, turbopump rpm, etc.) The point of a test is to gather as much data as possible in order to calculate the overall performance and efficiently thus they can improve the engine for even better performance to cost ratio.

[@devdecker7812]

Sometimes when I watch these I rotate it sideways and pretend the engine is a giant death ray Lazer . Im 28

[@erfquake1]

Am I hallucinating or are there horizontal bluish bands migrating up the engine bell surfaces during the burn? Video artifact?

[@johnd9357]

Ben Brigham I see it and I don’t think it’s an artifact of the video. It looks to me like a very thing layer of ice forming then melting on the engine bell. Most likely has something to do with how the cryo fuel is piped through the engine bell during flight. I know right after ignition the whole bell freezes over then the freezing sort of oscillates like we’re seeing in the video.

[@jfrtbikgkdhjbeep9974]

wicked 😳

[@benjaminbrown3939]

It is actually an artifact of using very old cameras

[@michaelblackwell4599]

@@benjaminbrown3939 funny you say that, this is a test from 2018. Fairly new cameras

[@benjaminbrown3939]

@@michaelblackwell4599 then why are the bands still there? Is it the result of the shaking forces of the exhaust jet messing with the electronics? Or could it be bloom?

[@book3100]

Sculpture. Engineering work of art. Rocket engines are mindblowing.

[@tombrandt8137]

Could somebody turn up the air conditioning, my computer screen is starting to melt

[@logantang9761]

I like how the guy says safety of our ppl is our main concern but at 8:25 you can see workers running away from the steam cloud hahaha

[@polized123]

Thats like steam wont be bad to health

[@KSparks80]

It's a gate moving, not people running.

[@cheesegrease8247]

That arm in front of the engine messed up my depth perception

[@lakshminarasimmanv]

If you don't know what the smoke is, it's just water vapor.

[@FantomZap]

We get it... you vape bro....

[@wheelitzr2]

10, 9, 8, 7, 6, 5, 4, 3, 2, 1, go for ignition. Your all thinking it !

[@Leo.Wirabuana]

and lift off !! the test stand building has cleared the ground.

[@TRTF5]

Hahahaha lol

[@TRTF5]

Good one

[@CharmsDad]

Watching one of these tests in person has got to be a pretty thrilling experience.

[@michaelhill668]

I've always wanted to be present at one of these. Along with an actual launch. Also, hopefully it will never happen, but a thermonuclear detonation too.

[@xa-xii4865]

One third of the F-1's thrust but still good for most rockets.

[@urmomconnor7870]

It won’t be flown unless NASA somehow completes the sls

[@Surrenitie]

@@urmomconnor7870 They already have the first one for the most part, they just need to assemble it

[@chrishaydt7354]

Yes but I'm pretty sure that the rs-25 is more efficient

[@Vitor7478]

Thrust isn't everyrhing needed

[@rocketman99]

Raptor kills it on the ground

[@fabiofantini2759]

What an amazing thruster they made. I love that blue glow, it's characteristics...the modern thrusters are different.

[@justicewarrior9187]

8:00 How the hell did that little fragile thing took the blast at full force and not broke up???

[@chubob73]

Maybe it's still not at the full thrust and the that thing might be made out of a strong material.

[@jordaneggleston3880]

"That's not a hot tub, that's the artificial rain generator" Doyle - "It just got a little bit warmer"

[@ignatiusjk]

When they test fire one of these engines there is so much exhaust released that "get ready" it changes the freakin weather in the area. Hows that for power.

[@tiberiusclaudiusnerogermanicis]

Paul seemed a bit nervous presenting this but I think he did a great job! Good info on the engine and boy does it pack a punch!

[@xa-xii4865]

8:00 More engines, more power, more kerbals.

[@brandonfleming7118]

People keep making a SpaceX vs NASA discussion when in reality both of them are working together happily.

[@kiwi4058]

this is the coolest rocket engine

[@Em.P14]

the beutiful almost invisible flame aswell (if even not more because of it) the blue glow it makes at the end and inside the engine bell is what i love abbout this engine

[@henrytjernlund]

NASA has to do what they are told by constantly changing politics.

[@docnathan3959]

Especially because it’s government funded. SpaceX develops faster because of private funding.

[@xavier1964]

Yeah, but that dosen't mean they aren't doing amazing work or making amazing innovations.

[@jshepard152]

@@xavier1964 This isn't one of them.

[@RDC_Autosports]

3:37 called a “flame bucket” my grandfather built most of them when they first started this

[@blueberry1c2]

[ LOUD RUMBLING ]

[@axczzhel]

Damn, Jared Owen did great on the space shuttle animation, every detail is up to facts

[@dekirkbride]

I’m listening to Rocketman by Elton John while watching this.

[@bamandabp]

The shock diamonds are so bright up close

[@thomasdc9264]

Hey, they made mainsail engine from ksp into a real thing

[@patrickkamm04]

Its the raptor engine, still funny though

[@PArabinddeep]

Nope, it's the KS-25 "Vector" engine. Or should I say KS-25 was inspired from this engine.

[@PArabinddeep]

@@patrickkamm04 Yeah, Raptor was inspired by Mainsail Engine.

[@patrickkamm04]

@@PArabinddeep ah, my bad! I totally mixed up raptor with vector, i was watching some SpaceX videos. Thanks for correcting me!

[@Sc-tb2qu]

3,2,1 and Liftoff! The Final liftoff for NASA‘s engine testing Facility

[@BrutalHeadHunter]

feel the energy !

[@michaelblackwell4599]

Always wondered how that blue cone-ish shape forms when the engine is first fired. And later in the burn

[@juliuscaesar7795]

The flow in that region passed through shock waves, which compressed it, making it slower and hotter. So hot that it starts emitting in the visible part of the spectrum. Look up for Mach diamonds. The flow field of a supersonic jet is quite weird cause you have a lot of shock and compression waves, but it's very interesting

[@xa-xii4865]

RS-25: i'm the most powerful engine!! Spacex Raptor: Hold my turbopump and methalox

[@anonymous_bacon2383]

See, the raptor is great but it has never seen flight. The RS-25 was used in the space shuttle. And I am pretty sure RS-25 is still the most powerful. Even if that is not the case, Rs is an amazing, efficient and powerful engine.

[@gean31]

@@anonymous_bacon2383 If they reused the RS as on the space shuttle they would be the best engines, they have high lsp an atmosphere and vacuum.

[@DarkTheFailure]

@@anonymous_bacon2383 if you count the starhopper it did technically fly

[@andrewmitchell5807]

They actually share very similar peak thrusts. In fact, while the raptor is slightly more powerful on the ground, rs25 beats raptor in space because raptor is not yet vacuum optimized. Also, you should check out the rocketdyne F1, because it is more powerful than the raptor by a factor of 3

[@xa-xii4865]

The rs 25 has problems.... The hydrogen corrodes the parts and makes the rs 25 inconvenient and inefficient in the long run. The raptor just needs a vacuum version of its nozzle and it's good to go. It has no hydrogen embrittlement problems as it's burning methane instead of hydrogen.

[@ryccoh]

It's a beautiful engine but shouldn't you cut the SLS and focus on what you're good at? The insight mars mission is awesome, you could do more stuff like this.

[@HeyHolc]

Announcer swatting mysterious NASA bug at 1:54

[@Evolution8R]

impressive, it burning 2-3 tons of fuel per second? 6-8K lbs.?

[@Trex531]

SLS is taking forever to build even though is based on existing technology. RS-25 engines were used on 135 Shuttle missions, wasn’t that enough to prove the reliability of its design? Or else, maybe they have made significant changes, then is not RS-25 anymore, but as far as I know they have not given info on this matter. I think this is due more to administrative issues than technological. It seems that on the short run, SpaceX will overtake NASA on Human Space Flight technology. And that would be incredible.

[@SaintChesty]

No bucks!! No Buck Rogers!!

[@SternLX]

Not about testing it's reliability. It's about testing upgrades and improving on an already excellent engine design. Even the RS-25 is based on the HG-3(Saturn upper stage engine). My guess is after they're done with upgrades they will probably call it a Block II RS-25E(the RS-25D having been used from STS-104 onward).

[@aleksandersuur9475]

RS-25 is fancy-pancy engine, very efficient, but the cost... Of course they will start by using engines left over from shuttle, but that only lasts 4 flights, then they have to start making new engines. Originals cost 40mil per one engine I think? I doubt they'll get the same price they did near 40 years ago, so yeah that's a good amount of engine dollars going up in smoke per SLS. Plus two SRB-s. Bigger rockets are needed, but not at any cost, especially as it looks like there will be alternatives coming up fairly soon.

[@Trex531]

burz21 Yeah, I absolutely agree.

[@joerusso4219]

I agree how many times do you have to test this old technology. Get it in a rocket and use it !! Meanwhile we are buying engines from the Russians.

[@xa-xii4865]

If I mounted this on my countach id probably end up on jupiter......

[@IAmNotMitch]

For everyone hating on the budget allocated to the SLS program how about you do some research on the defense budget compared to NASA budget, then decide what’s more important being the “biggest, baddest country” or a future with people being a multi planetary species.

[@RealityIsTheNow]

Hell, defense isn't even the problem. Compare the NASA budget to the Dept of Homeland Security. An entire cabinet level deptartment that shouldn't even exist.

[@RealityIsTheNow]

R Diaz Then you are an ignorant, simple minded child with no conception of reality. Stop believing whatever they tell you, sheep. Educate yourself.

[@RealityIsTheNow]

Democrats? What are you even talking about? Who said anything about politics? lolwut. You need better ventilation in your trailer. Stop burning books for heat. Read them instead. There are better ways to fry that bologna, Cletus.

[@hoghogwild]

Agreed 100%, a single year of funding the US military costs more money than NASA has ever been allotted since the agencies inception in 1958.

[@RealityIsTheNow]

Yeah, but defense is pretty much the most basic function of any government. A very large economy like in the US can support a very large military. As a percentage of GDP there are many countries that spend proportionally more. It would just be nice to see the funding that goes to something like Homeland Security (wasted) go to NASA instead. We don't need a whole DHS. The existing agencies and if necessary the military can do that job.

[@sergeitela9929]

Сколько вы сожгли кислорода? Сколько можно было отопить (согреть) домов зимой? За это время, пока работает двигатель от начало до конца.

[@1320crusier]

So.... how many more tests of these same engines? Originally there were 5? that were to be run and now its far into the double digits. Wouldve been quicker at this point to just build new engines.

[@Ryan-rq6dx]

As far as i know that is incorrect.

[@joedmac78]

What we really need is a replacement for rocket motors as the main propulsion to LOR. that would truly be revolutionary

[@baddonkey6876]

If chuck norris smoked.....he'd light it with this then shake it like a match to put it out

[@joshuajeffers1481]

😂😂😂😂😂😂😂😂😂

[@joshuajeffers1481]

If it was Bruce lee he'd be using this to roast marshmallows 😂

[@jakeone9]

Someone didn't tell the dudes in between the white trucks at 8:25 that the test was starting 🤣🤣🤣🤣🔥

[@TRTF5]

Lol

[@sherbertruddick2170]

NASA’a multi million dollar smoke grenade

[@BlackEpyon]

That's steam, not smoke. Hydrogen/Oxygen is literally the cleanest fuel you can burn, because all it makes is heat and water vapor. The SRBs on the other hand, make giant columns of smoke and fumes.

[@sherbertruddick2170]

BlackEpyon thanks

[@BlackEpyon]

Which, now that I think about it, gives Rockeydyne's RS-25 another leg up on SpaceX's Raptor engine, because the Raptor burns RP-1 (rocket-grade liquid methane) and oxygen, leaving a carbon footprint. It's a bit of a moot point though, since NASA has to involve industries from the entire country (being a government organization, it has to be a "jobs program" after all), where SpaceX manufactures their rockets all in a single complex.

[@Sevival]

BlackEpyon steam is still smoke. It results from a combustion. This is just as much smoke as burning wood. Just different composition. Stop being a goddamn smart ass

[@Rael14]

+Berton Smoke isn't steam fucktard the two mean totally different things no matter if the steam is the result from a combustion the steam still STEAM.

[@makismakiavelis5718]

That transparent flame in LH2 - LOX engines always gave me a hard-on. The power... the temps... if you stuck a rebar up that ~3400 K nozzle i reckon it would liquefy in seconds. Wholesome, unadulterated combustion... and the exhaust fumes? Water. Fucking water... gets me every time.

[@joelp77440]

I'm so proud of NASA. One day, my grandchildren will see the first launch of the SLS built with engines built by my grandfather.

[@chasepedigo]

lol

[@kevinsupreme_ph36yearsago59]

The power of this rocket engine is nothing compared to Goku's kamehameha.

[@qow2427]

People walking past at 8:23 !!!

[@TIGERHOOD]

RIP their ears

[@TheJamesm1980]

Jeez I'd love to go see these tests the noise must be incredible

[@nspinicelli]

I really wanna stand near a rocket engine one day. I know it's crazy but everyone thinks it.

[@B11video]

@ 8:20 I don't think I would park my car that close to a rocket test.

[@greggarnette2699]

lets take it to mars

[@WeBeGood06]

No, I think they are going to dump them in the ocean when they are done.

[@InfoSopher]

Yeah.. Let's do that once, or twice. And then end the program under mounting political pressure due to high cost and waste of tax dollars. Because that's what will happen - in the best case scenario. (Sorry to say that. Sorry to all the great people working at NASA. But it's a fact. And you know it.) What an inspiring outlook on the future. F*** that! We need to colonize the solar system. It's about time! There's so much to learn. But this rocket won't get us there.

[@justinhiggins2210]

Half a million lbs of thrust. Imagine that thing on a f 104.

[@ArnaudMEURET]

So you can’t properly cut a PR video and you’re doing rocket science?

[@BlackStarEOP]

Still the greatest technical achievement regarding rocket engines.

[@jetli8703]

Hard to believe their latest rocket will have 30 year old used engines on it because they can't make a new design. Of course can't leave out the 2 main rockets in use, Atlas and Delta. That's only 65 year old tech. Thank God the Russians have an engine for them since the US can't build that either. But I bet the stocks in those companies has "skyrocketed" over the years with mergers and acquisitions and porkbarrel projects, and I am positive the top management makes some serious cash sitting at their desks. I won't even mention what I think the politicians involved are getting to steer NASA to these loser companies and award them the contracts..

[@doas6311]

These are already the most efficient engines in the world and they are already improving it. Let's see what would you do? Scrap a really good engine design and make a whole new design? Nasa has a budget and being able to save money and improve it is really good consider it is the most efficient rocket engine

[@waterfall3]

Torreto needed this during race wars

[@Rekcoj]

i'm scared by the amount of people here in the comment section that don't understand the difference between NASA and SpaceX... as if SpaceX is a spaceagency... compared to NASA, SpaceX has no clue about spacetravel and that isn't a bad thing, they're simply just a contractor. SpaceX would never ever send anyone to the moon or mars without having a government contract which they'd get from NASA. they'd never invest billions and billions of their own money just for sending someone somewhere without getting a huge economic reward shortly after. that's why you need governments to make those investments, because they can efford to have the "rewards"(economically/scientifically/cultural) years even decades in the future while companies, being capatalists, cannot efford such longterm investments.

[@phoenixrising4573]

Never listened to musk speak, have you?

[@kevinconnelly6770]

SpaceX isnt there to make money, its their to send people to mars first and foremost, hence it still being a private company, money is a secondary issue

[@techandtrains101]

SpaceX are sending private citizens on a lunar loop within the next few years...

[@mattrowlands5751]

His point is that nasa gets funded by taxes, but spacex has to make its own money to fund its projects. Whether they want people to go to mars or not is irrelevant if they don't get funding.

[@nobettername562]

So, the biggest difference is NASA is funded by taxpayer dollars, meaning all the congressmen that get paid by Boeing and Lockheed get to tell NASA to use Boeing and Lockheed. SpaceX is funded privately and contracted by the gov. The difference here is that NASA being a civilian organization is overseen by the gov, and SpaceX gets to kinda do what they want. SpaceX is not a space agency, they are LEGALLY not allowed to send people to space without gov approval, which is why the first Astronauts to fly in SpaceX's Dragon are NASA Astronauts. SpaceX is also only allowed to launch rockets because our gov allows it, at any time, for any reason, the Air Force can take away SpaceX's clearance to fly rockets. SpaceX has space travel figured out, and they are doing it better than companies with blank checks from the gov, because they have to. If SpaceX wasn't better for certain things, then the gov wouldn't fund SpaceX or clear it to fly. Yes, you still need governments to push and fund certain things, and government involvement is given less credit than it deserves, the problem is there is no real push for any of this, people are undereducated and do not know why we need to go back further into space or the benefits of it, our President and his staff are all scientifically illiterate, and have no idea what they are doing, and 2 big greedy companies got blank checks from the government and have no incentive to get anything done right now because they can just soak the money. It is a lot of factors causing this, and we aren't in a very good place right now (even with SpaceX innovating in so many ways), and the biggest problem is there is no major incentive to put people back into space since satellites are the only thing really profitable right now, and it already costs $150 billion per year of several governments combined, just to keep 6 people on the ISS. P.S. These RS-25 engines are heavily modified, they aren't old flight hardware, and they also are not the same SSME models we know. This variant is untested, and therefore, it needs to be cleared for human flight.

[@JattLifeAmerica-u4j]

Rs-25 engine is awesome 🇺🇸👑💕💕

[@ironicomical]

"First test of 2018" for an engine that was first tested in the 1970s and flew astronauts to space in 1981. Your efforts to build launch vehicles are outdated and redundant. Focus on your strength: Science missions and let private boosters get you up there. Note the source: NASA Stennis. SLS is the latest federal welfare program for Mississippi, Alabama and Texas. And for the fellow below who noted the disparity between the defense budget and the NASA budget: True that. But let's ensure we get the most science for those precious NASA dollars. SLS fails on all measures.

[@gregmoore8494]

There is a big difference in qualifying a spacecraft for Human flight as opposed to putting a car in space. Everyday I wonder, are people getting dumber here in the U.S? Or does it just seem that way? And everyday it is confirmed that yes, in fact the American public is becoming less intelligent by the day.

[@wyattb3138]

Still looks pretty powerful

[@ivgotballsofsteel4048]

ID GO TO SPACE ON 75% ODDS

[@xavier1964]

That engine built in the 1970's is still one of the most powerful and efficient engines in existance. Why spend millions developing a new engine when you already have a surplus of an engine that is still more efficient than all modern sea level engines. SLS isn't outdated and redundant, it is designed in a different way to do a different job than private launchers.

[@jshepard152]

@@gregmoore8494 So it wasn't qualified for human flight in 1981 when it flew astronauts into space? How about in 1985? 1990? 1995? 2000? 2005? 2010?! After forty years and 400 engines to orbit, when do you think it might be qualified?

[@Dexter101x]

Got to have the balls to have their cars parked near to the test rig

[@deveusdude]

$2 billion a year gets us an incrementally improved 30 year old design, shameful

[@WeBeGood06]

It's not an improvement, it was spent to convert robust reusable engines into expensive disposable engines.

[@joshcruz4268]

Peter Donaldson I bet you googled how much nasa makes

[@pebmets]

Peter Donaldson, Still the most efficient engines ever built even by today's standards. As many have mentioned, only engines rated for human space flight. 135 shuttle launches only one engine out of 405 that ran failed. That's 99.8% percent. What kind of price can you put on something when human lives are in the balance. The RS-25s to me have proven themselves.

[@BlackEpyon]

SpaceX still has yet to make a rocket motor that can match the RS-25 in thrust, and next to the retired F-1 (also by Rocketdyne) for the Saturn V first stage, the RS-25 IS the most powerful rocket motor in the world at this time.

[@elgoog-the-third]

F-1 was the sledgehammer approach. It was huge, but a very mediocre engine. And RS-25 the most efficient? My ass. It's not even closed cycle.

[@joe2mercs]

SpaceX is now so innovative that projects such as SLS will soon be consigned to history. No one is happier at this prospect than NASA as it will liberate them from the obligation of keeping contractors busy.

[@darthvader9969]

And now Orion has gone to the Moon before Starship even launched

[@norevlimitr1602]

Never A Straight Answer

[@whatsup7202]

Norevlimitr Shut-up, and smell Reality.

[@ferret1337]

norevlimitr nauxious obstructive reactive egotistical vile loafer idiot misinforming idiots to react. acronyms for everyone!!!

[@wyattb3138]

NASA just stands for National Aeronautics and Space Administration, not never a straight answer

[@Betterthantelly]

Was a bit flamey at the start up. I’d alter the mix a bit. Plus that pipe thingy on the outside isn’t really needed. Apart from that it looked ok.

[@5000mahmud]

Thanks chief engineer! NASA will get right on it! You vital expertise is always appreciated.

[@Betterthantelly]

5000mahmud Haaaaa! It’s unbelievable engineering it really is!

[@latentheat3956]

Title should be NASA testing cloud generator

[@honestspirit56]

Amazing engine….such power is hard to imagine.

[@teefkay5814]

At 8:25, is that two people running towards the left, between the 2nd & 3rd cars on the left?? I'd imagine that's a pretty good way to get parboiled... Plus, everyone gets a free car steam-cleaning.

[@KSparks80]

lol It was 2 white signs attached to a gate that was moving.

[@lessevdoolbretsim]

The opaque part of the plume at the tip should be called the "flame nipple".

[@screwsnutsandbolts]

Very impressive !

[@r.6731]

That's some serious power!