Why SpaceX Built A Stainless Steel Starship

[@RealEngineering]

The daily problems on Brilliant are actually fantastic. Great way to challenge your brain each day. Thanks again to Brilliant for making these videos possible: brilliant.org/realengineering/

[@Sednas]

My previous comment was a shameful reference to am egotistical KZbinr known as MaximilianMus, I no longer support that sad personality.

[@jun1orIV]

You are forgetting to approve the subs... I sent two subtitles months ago for the videos "Can We Terraform the Sahara to Stop Climate Change?" and "How We Will Colonise The Moon", and both still weren't published...

[@billyboy_45]

Your segways are so smooth, too smooth even ! It kinda makes you feel like the video is not over and lacks a conclusion sometimes ... Well that's the only critique i have, otherwise your content is amazing in terms of research, animation, narration etc. Keep it up man, your work is just ... Brilliant ;)

[@Valansch]

I will not, ever, sign up to brilliant.

[@engrsmukhtar]

You need to patent such a brilliant fluid transition to the ad section.

[@seq165432]

Would it not be ironically hilarious if the Mars spaceship ends up looking EXACTLY like the 'absurd' spaceships of 1950's space movies? :)

[@greenbanana311]

Yes, if you were to stretch the definition of "*extremely hilarious*" to an absurd degree.

[@kenoliver8913]

Those 'absurd' spaceships looked like the V2 because people's idea of a big rocket was the V2. By 2001 (the movie) a big rocket in the movies looked like the space shuttle. What's the betting that if Space X succeeds then Hollywood's ideas will shift again ..

[@komradewirelesscaller6716]

Yes your so right that would be pretty ironic and humorous. Or even like some of the spaceships from the old Flash Gordan serials.

[@flatstuff1630]

Pretty sure you don't understand the full import of your question /statement. Try and think about it in reverse.

[@rickduffy8929]

Buck Rodgers in the 22nd century! Lol I think the incredibles have a similar design :o

[@brandontea3815]

The sweating part is really really smart. Makes me believe that the best engineering is to copy nature.

[@AverageBrethren]

we are biological machines if you think about it. maybe nature is the peak of engineering

[@gdash6925]

@@AverageBrethren nature is gods gift and its our mission to to look at it and use it. Ki nda like a graph going closer to infinity

[@A3ATOT]

Sweating fuel while in fire, is not really a good idea

[@dm5802]

It is.

[@loveisthemostpowerfulforce1397]

Sounds like what Nikola Tesla said "“If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.”"

[@dhupee]

"The Falcon 9 certified for human payload is a bit of a nightmare" Me: NOT ANYMORE!!

[@banned2911]

Daffa Haj Tsaqif im so happy

[@Wulthrin]

best thing to happen in 2020

[@ralanham76]

They did it

[@defencebangladesh4068]

yes

[@drabberfrog]

I watch the launch It was so cool

[@kebabkev]

Elon stares at Starship for a moment. "Tell you what, throw a little hot rod red in there".

[@oakwhelie]

it makes the rocket fly FASTA

[@hobbit1817]

Like tony stark with his iron man suit

[@Novadababy]

Well He is tony stark

[@thrasher2344]

Or Tony Stark is Elon

[@rohanahlawat5809]

This is not the marvel universe. Grow up.

[@TheScienceBiome]

Your thumbnail game is *so* strong.

[@Psrj-ad]

@wall wall yes

[@jumpjetterz5818]

no his game is SOLID...😂😂😂😂

[@christopherrhodes3228]

With his thumbnails, he could play marbles on a competitive level!

[@FutureNow]

+1

[@samuellittle1286]

Word is bond.

[@danievdw]

You missed the real important bit. " Most steel alloys get brittle at cryogenic temperatures. That’s not the case for stainless steel with high chrome-nickel content. It gets stronger in cold conditions, but it also maintains ductility. That means stainless steel has high fracture toughness, which could prevent small structural imperfections from developing into cracks." With the cryo fuel loaded, that thin sheet of steel is stronger than carbon fiber, on top of all the other stuff you mentioned.

[@surronzak8154]

" It gets stronger in cold conditions, but it also maintains ductility." nope, it loose ductility slower than steel , and don't get stronger when cold.

[@danievdw]

@@surronzak8154 ..nah, I think I will believe the metallurgists and rocket engineers that is actually using this, over some KZbin know it all.

[@surronzak8154]

@@danievdw where doese it say that it will be stronger when cold ? By the way I'm IWT metalurgist using stainless steel everyday, I know the KV for those materials ;-)

[@danievdw]

@@surronzak8154 Yeah, my mum was lead design on NCC-1701-B . Stop being lazy as well, do some research yourself. Plenty of info available on it, especially after SpaceX started using it.

[@surronzak8154]

@@danievdw LMAO youdon't know what you are talking about buddy

[@loganthesaint]

I love how Elon is pushing new ideas, and failure together. Because success without failure is just luck lol.

[@crisangle8592]

"I love how Elon is pushing new ideas, and failure together. Because success without failure is just luck lol. " better not while i was driving on freeway

[@ihihihihi.heheh.]

Funny it's true

[@lemarthomas7647]

That's the true and only way that we are going to get out of this mess,of an World, That these 😵 Scientist created, The Carovi19!..

[@lemarthomas7647]

Super MaN 💪 Bro..

[@ihihihihi.heheh.]

@Bilal Khalid holy fuck. You are really dumb!

[@1Deejay7]

Flex tape. Problem solved. Rocket made entirely out of Flex tape.

[@davidmok108]

Hogwarts: You want a scholarship boi?

[@jkoeberlein1]

Freaking brilliant!

[@aerojetrocketdyners-2538]

someone needs to publish the heat properties of flex tape.

[@nathanielrobb6973]

This is beyond a lot of damage

[@banned2911]

89 Alpha who are you so wise in the way of sience?

[@jasonfireshield6134]

The first liquid cooled rocket better have RGB

[@lober_pancake9196]

Jasonfireshield yea

[@SteveVi0lence]

*KGB

[@shockwave2291]

Especially because it makes it go faster.

[@dwutlenekwodoru9692]

zygmunt szymanski hahaha, Cejrowski wszedł mocno

[@dannydaw59]

What's RGB?

[@Svitman]

Starhopper - the test article Starship - the actual thing that goes to Mars

[@_aullik]

well starship will got to the moon. Then a revised version will eventually go to the mars.

[@maxschmieder232]

Thank you!

[@christopherrhodes3228]

Starlord, the pilot

[@happi-entity]

Starwars - the entertainment

[@DrewLSsix]

Svitman As often as plans change its foolish to say something with such certainty.

[@KarlssonF]

_"where stainless steel shines"_ *see what you did there*

[@AQDuck]

I wonder if Starship will use Chrome OS...

[@haoteng2823]

Pvt. Duckling Nah. It will use android.

[@Keldor314]

@@AQDuck Stainless steel is in fact made by alloying chrome into regular steel. ;-)

[@justADeni]

@@Keldor314 Thats the fucking joke everyone knows that

[@Keldor314]

@@justADeni I thought it might be. OR it might have been a reference to the shiny part. Covering the bases.

[@ItsaDigitalHamster]

Real Engineering: Sometimes you just need to make mistakes to learn, which is why you should sign up to Brilliant. People who sign up to Brilliant: lol won't do that again

[@willkaporis7958]

janet lopz I think you’re in the wrong comment section

[@AQDuck]

@@willkaporis7958 It's obviously a bot, just report it

[@theultimatereductionist7592]

Origin of "WD-40" - I honestly never knew that before!

[@wildman2012]

And apparently, it really was the 40th time they tried the formulation before they found the one that worked.

[@HuntingTarg]

Water Dispersant formula # 40. Along with Heinz 57.

[@ronschlorff7089]

@@wildman2012 It's just Science 101: "If at first you don't succeed...…"

[@stastavross3330]

WD40

[@JohnNugroho]

Mindblown

[@johnterpack3940]

The ship looks like nothing else... unless you grew up watching '50s sci-fi.

[@joseinfante5054]

This is not a ship, this is a Havana cigar hungry for fuel and slow as snails, I bet it won't even go to the moon, much less 58 million Klm to Mars. TESLAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

[@uaEquals42]

Correction or note: It was only the fairing that toppled over. The bottom half with all the tanks, plumbing, etc stayed upright.

[@mirkokvesic1598]

I only crashed half of my car, the trunk stayed untouched. Do you think I can sell it as half crashed? Asking for a friend :P

[@_aullik]

@@mirkokvesic1598 Do you have cover over your car that can be attacked? Imagine that getting blown away by the wind. It can be repaired without major problems. I mean they build it in a week in the first place.

[@uaEquals42]

@@mirkokvesic1598 A better analogy is that a cargo carrier on top of a car falls off. The car will still drive.

[@PD-we8vf]

There is no plumbing in it. It is a set prop.

[@Charles-fc9gi]

uaEquals42 the thing just detaches from the wind, sure, the structure will be fine when it enters mars. Elon Musk is a genious... Even nasa during the space race when there wasnt a lot of knowledge about spacetravel, even then they didnt have these kind of failures. Nasa tested everything and made a lot of stupid failures, but not this level of failure. I think if a normal, less ambitious person would leas spacex, they would accomplish much more, elon musk just wants to much, and often the things he want are just too early, science is not prepared yet.

[@JNDlego57]

“Failure is an option here. If you’re not failing, you’re not innovating enough.” - Elon Musk

[@kstar1489]

Unless he’s putting actual people in it

[@natthaphonhongcharoen]

@@kstar1489 That's why it's a good thing to fail as many time as he needs while he still can

[@doodleboi7034]

*Soviets Intensifies*

[@HalNordmann]

To me, SpaceX's "rapid prototyping" via blowing up tanks in a field with bits soldered to them seems more like messing up. Even NASA in its glory days with a nearly blank-cheque budget didn't have so many explosions!

[@dolphinboi-playmonsterranc9668]

"The key to success is slavery"-Elon Musk

[@lsemenov]

My Soviet university "diploma work" back in 1987 was to test this type of cooling for rocket re-entry, porous pressed metal powder was used, however there were problems with incostintent gas flow in different parts of provided samples. Hopefully perforated solid metal will work better than baked together particles, I really hope such protection is possible (although not 100% sure), only tests will show.

[@lsemenov]

@BRAVOZULU DWEST boathouse I don't think it's possible to calculate these things precisely because of nature of turbulence, it is not really predictable and may create very local effects when one part of rocket will be heated much more than other part. That's why tests are still necessary. That's why wind tunnels are still used. However, it's hard to replicate all conditions of re-entry in wind tunnel, SpaceX is right to build cheap test rocket.

[@HuntingTarg]

I think the biggest challenge will be with the baffle diffuser 'heat shield' that the methane will flow through; there will be cryogenic methane on one side and high-pressure semi-ionized hypervelocity gas on the other. This will create a high thermal gradient across the baffle plates, and I am not sure if anything short of an actual flight test will prove/disprove this approach. If it fails, it could doom Starship and jeopardize SpaceX's investment funding. If it performs as designed, we enter a new era in spaceflight and human exploration.

[@lsemenov]

@@HuntingTarg I wish I knew what kind of heat protection is used by the newest breed of Russian nuclear hypersonic gliders, yes they are disposable but still may use similar method to keep hot plasma from surface of metal, I know that Soviet Union worked on that long time ago. Although metal still will be heated by light but this is not the same as direct contact. The goal is to make gas cushion between plasma and metal. I doubt that methane is the best candidate, perhaps helium or some other inert gas that will not react with metal.

[@HuntingTarg]

@@lsemenov under correct conditions a high-pressure high-flow gas boundary layer will form between the plasma and outer spaceframe skin. I wouldn't rely on that exclusively to protect a metal or composite frame though. A cryogenic fluid (Helium, Argon, Nitrogen) in an open-loop boil-off cooling system is conceivable, although I don't know of an example where that's been tested.

[@snakeslither8831]

cOmMiE

[@sheaedwards1999]

Another amazing video again! Been a long time viewer and can say this channel is one of the reasons i'm studying engineering now

[@nedimlapo1582]

I can relate, I now want to study mechanical engineering with focus on motors and vehicles. I always admired electric cars and would love to work on developing better ones in the future. There are no car production companies in my country so that definitely means I would have to move somewhere else but it is worth it I suppose...

[@qadarinimo258]

Nedim Lapo what about automotive engineering that’s all about cars 🚘

[@nedimlapo1582]

@@qadarinimo258 My mechanical engineering university has only 2 options, computer engineering and product design, and I literally can't see the difference between them, both of them have same subjects...

[@qadarinimo258]

I wanna study aerospace engineering

[@thishadowithin]

I was interested in the field but, honestly, it got super boring unless I could hold a laser and zap something lol

[@evaristegalois6282]

Other scientists: “Let’s colonize Mars” Elon Musk: “Yeah, let’s colonize Mars, but first: Meme 👏 Review 👏"

[@jerponemyce9497]

Found you again

[@pug2858]

Mars👏Review👏

[@diegoviniciomejiaquesada4754]

Evariste Galois over 85 millions subscribers on PewDiePie channel... 0.1 $ per subscriber = 8.5$ millions... enough to invest in Space X and help Elon reach Mars.

[@chimergo6501]

But Ellon isn't scientist, he only "crazy" businessman ...

[@pug2858]

@@diegoviniciomejiaquesada4754 but it cost 1 bil to reach the moon so we need 5$ for every 9yr old. 85Mx5=425M enough to book probably a couple of seats

[@alwinvillero4404]

2020: the tin can now exists and even launched once

[@Rauruatreides]

Late 2020: Tin can evolved into an 80s spaceship and flew.

[@JayPatel-ug1nh]

@@Rauruatreides Early 2021 : SN8 and SN9 did a spectacular flight, but RUD on landing. Waiting fro SN10 to fly and nail landing!

[@julittok]

Late 2039: Nuclear winter took over after USA and China released their nukes over a struggle for world domination. 2043: We are surviving on scraps, communications with surviving groups have been decreasing worldwide. 2049: I'm down to my last can of expired beans, the rest of the world is silent. Four starlink satellites are still operational, they allowed me to send this message. Late 2049: We weren't worthy of this planet, i'm so sorry.

[@corrick4339]

@@JayPatel-ug1nh sn10 stuck the landing! And then exploded!

[@luckuijken5451]

Mid 2021, tin can landed and survived!

[@one2toomany]

"There's no oil on Mars" The American government has lost interest.

[@briancarlson6216]

well people once thought Alaska was useless so who knows there might be larger reserves there than on earth

[@FrVitoBe]

@@briancarlson6216 galaxy war 1 inc

[@Yor_gamma_ix_bae]

sends orbiter to Titan for hydrocarbon exploration

[@DonTiberius35]

Might not be oil but plenty of other materials

[@jamesbizs]

why do people think it's just america that cares about oil lol Kinda like how everyone thought it was just America that had slaves, when the reality was, America had a tiny tiny percentage of all slaves.

[@Fairman25]

Rule 1 of engineering: MORE TRIANGLES!!!

[@SLEEPYJK]

Don't be silly, that's Rule 3

[@GuncoHistory]

rule 1 is actually "more circles". Since round forms can do a lot better against pressure than other figures. This is why our submarines, spaceships, bunkers, tunnels are all rounded :)

[@pchurch4973]

Civil engineering

[@syntaxusdogmata3333]

LOL... thanks, Euclid! 😏

[@ivanrodionov9724]

@@GuncoHistory what about a relaux triangle?

[@Aeronaut1975]

I'm British, so know you're talking in Celsius, but when you're talking about numbers in Degrees, you should always specify whether Fahrenheit, Celsius or Kelvin. The first rule of Engineering is "Name your units".

[@jerrb7991]

Kelvin is not a degree, in fact writing °K is a mistake. So the confusion can be only between Celsius and Fahrenheit. So in the non-retarded measurements units part of the world degrees are only Celsius, so no confusion at all

[@stefanvdw7895]

mezsh In space units that are used are metric. Not imperial. Should be pretty obvious

[@spinor]

@@stefanvdw7895 you'd be surprised...

[@Aeronaut1975]

@@stefanvdw7895 When it comes to science and Engineering, one should never make assumptions. Remember the Mars Climate Oribiter?! Just name your units, whether it's obvious or not, then there's no confusion...

[@EvitoCruor]

Enlightened Doggo You do realize it was done in a year when measuring the temperature with one Kelvin accuracy was considered good?

[@cheeseninja1115]

I like coming back to this video to see just how far SpaceX has grown in such a short time, not just for a space company but just a company in general!

[@lifesimulator3964]

"The thing literally fell over in the wind" Mars, 2020 Astronaut 1: I'm gonna get the tools from the rocket. Astronaut 2: Sure, go ahead. *heads outside Astronaut 1: Where's the feckin' rocket!? I just parked it right here!

[@thinkabout288]

LOL

[@_aullik]

The winds in the strongest Martian storms top out at about 60 miles per hour with an atmospheric density of 1% of earths atmosphere. So I would be surprised if this can happen on mars.

[@oliver6496]

It's a joke.

[@theuncalledfor]

@@oliver6496 Jokes usually work best when they have some basis in reality. When examined, this one turns out to be just stupid. I'm sure everyone here knows it's a joke, we just don't all agree that it's a good one.

[@thinkabout288]

@@oliver6496 and a good one

[@Dragon029]

There's a couple of errors or misconception in the video and one key part brushed over: 1. "Starhopper" is just the nickname of the test vehicle being built in Texas; it has this name because when SpaceX were testing the software and systems required to perform landings with the Falcon 9 they built a short version of a Falcon 9 (with just 1 Merlin engine) which was called Grasshopper. The actual rocket that's going to Mars is called "Starship" as a whole, with the upper stage bearing the same name and the booster (which is only necessary for getting Starship off of Earth's surface) being called Superheavy (as a spiritual step-up from Falcon Heavy). 2. The Starhopper vehicle being built in Texas is not the same height, weight, etc as Starship (just as Grasshopper didn't have the height, weight, etc of Falcon 9); rather it's just designed to test propulsion and the final stages of landing (being able to throttle the engine properly, have a reliable and rapid gimbal system, etc). They do have a very rough approximation of the final Starship's CG vs center of pressure with Starhopper, but it's only really rough data. There's also rumours that they might attempt a simulated mid-air engine-out, where the rocket would descend under 1 or 2 engines (instead of all 3 they're installing on Starhopper; Starship is currently planned to have 7 engines), likely at a tilted angle - engine-out redundancy is important for something that's envisioned to carry 100 people to Mars and (later) back. 3. They're also going to be building a full-scale prototype of Starship separately to Starhopper; this full scale prototype was meant to be under construction now at the Port of Los Angeles, but SpaceX didn't renew their lease and are moving construction to Texas, so there's likely not much in LA right now (that can't be moved by truck, rather than barge, to their new Texas facility). It's not clear whether this would be a vehicle that later turns into an operational vehicle, but that full scale prototype will actually test things like the aerodynamics of the rocket (including the special aerodynamic control surfaces, have the proper manufacturing techniques (such as those involved with the active cooling system), etc. Starhopper will get the control laws tuned into the ballpark, the Starship prototype will refine these to transport customer payloads and humans. 4. This is the key part you missed out - a lot of materials, such as carbon composites, aluminium and even many stainless steels, get weaker when they're subjected to the cryogenic temperatures experienced when being used to store -200C liquids. The specific stainless steel (a slight variant of 301 SS for the tanks, a slight variant of 310 SS for the heat shield outer wall) that SpaceX will be using however actually gets about 50% *stronger* when it experiences these temperatures. The combined cryo + hot strength advantages of steel has ended up resulting in the payload capacity of Starship rising compared to prior carbon composite-based plans.

[@RaoulPathak]

Dragon029 Great information, thanks!

[@astrofan8775]

And that's why i like to - if he covers it - watch Scott Manley, as he tends to cover all of these seemingly less significant points, even if it results in a longer and harder to understand video, as he wants to mainly inform us to the best of his capabilitys. Luckily he did cover this already (actually surprisingly long ago) in some detail, mentioning all of these points (although not all of them to this detail, he expects us to get the starhopper/starship-stuff by just indicating it).

[@HuntingTarg]

That is great information, and Scott Manley did cover most of that. It is just formatted like a wall-of-text. Sincerely; thx for posting.

[@mrs.magnet2816]

can you be more specific

[@ArtOfRuin981]

Legit.

[@SevenDeMagnus]

They actually let the carbon fiber tank explode to know it's maximum limit. It didn't fail.

[@vavra222]

hey, might as well get the most out of it, if you cant really use it.. at least the info will be useful when and if we can manufacture CF more easily

[@geraldhenrickson7472]

Interesting...good to know.

[@tylercobb8293]

Yeah I would say that too to keep investors xD

[@tylercobb8293]

@@Chamieiniibet it was joke. 😁

[@thalescarl1589]

Here we are. Days before SN9 takes off. I hope it could land perfectly this time.

[@adamunderhay8347]

weeks* lol

[@mikethespike056]

RIP

[@thalescarl1589]

I guess it is rest in pieces now unfortunately. But sn10 will land in one piece, I hope.

[@mikethespike056]

@@thalescarl1589 I told you it should land in one piece, not that you should bring me one!

[@Br0nson_0]

@@thalescarl1589 oh oh

[@spinor]

Just so you know, "Starhopper" is the test vehicle currently being built. The actual thing will be called "Starship" and the booster "Super Heavy".

[@LordEvrey]

Also, Starhopper with the old tip was only about 2/3 the size of Starship.

[@Christopher28fair]

I thought BFR was great. Versatile.

[@subwarpspeed]

Yes thanks for someone correcting that. It stains the work and knowledge he puts into the video when failing to properly name it. One starts to question other stuff then too.

[@DrewLSsix]

“Will be”. As often as plans change I wouldn’t count on it.

[@_Andrew2002]

@@Christopher28fair It was but people kept changing Falcon to the F word. You can't have 8 year olds interested in space if the most powerful rocket ever built uses vulgur in it

[@RÅNÇIÐ]

Cuz stainless steel vehicles are better for time travel

[@dalton-at-work]

this comment is too far down the thread!

[@fisherjam5182]

We don't need roads were we're going!

[@tidepoolclipper8657]

Gee, can't wait until someone accidentally encounters their past self and causes the collapse of space time continuum!

[@andyoli75]

Great Scott!

[@xxtensionn]

@@fisherjam5182 back to the future 2

[@FutureNow]

Plus it won't rust from all the humidity on Mars 😝

[@meegomeow]

There is no humidity in Mars armosphere

[@FutureNow]

@@meegomeow That's the joke, my dude.

[@kanva4]

@@meegomeow whoooosh! There goes the Big F*cking Rocket (BFR) aka the joke

[@nootnootpenguino8586]

@@meegomeow r/woooooooooosssshhhhh

[@romane.67]

@@nootnootpenguino8586 R/woooosh 4 o's

[@MikeMiller-fc2cc]

What you said about WD-40 is true, It was deloped by Aerosol systems, I used to work there

[@shawnbarrett4540]

I thought it was about driving moisture out of the electronics, not the bodies? Or was that just an unexpected benefit?

[@datgio4951]

Mike Miller ok boomer

[@hyperion3704]

@@datgio4951 OK Loser

[@oldmate6380]

what is the formula

[@stanleyhipkiss4690]

@@datgio4951 and what glorious generation do you hail from

[@keithallver2450]

While I hope Elon pulls it off, I wish they would not call the thing Starship. Its supposed to take people to Mar's, not Proxima Centauri.

[@Bryan-Hensley]

Planetship sounds stupid though

[@Bryan-Hensley]

Let's go back to Big F*"king Rocket

[@Desrtfox71]

Lockheed Shooting Star, Starfighter, Starlifter, Ford Comet, Boeing Starliner. There is a long history of naming various types of vehicle with astronomical names, despite them not being designed to actually go to their namesake. Starship is fine.

[@keithallver2450]

@@Bryan-Hensley I was fine with BFR but I preferred Big Falcon Rocket.

[@Bryan-Hensley]

@@keithallver2450 I wonder if the upcoming falcon eye rocket had any influence on the name change

[@isaiahphillip4112]

I love this channel, this was a bit of a bizarre video though. Mentioning the fact that the Starship has to reenter "not once, but twice" kind of down plays the significance of what Spacex is doing here. They're not just developing a rocket for the purpose of going to Mars and coming back, they're trying to design a rocket that can go to Mars, come back, and then leave again any number of times. The goal is a fully reusable rocket than can go to space and reenter tens, hundreds, or maybe even (a bit aspirational) thousands of times. And it's not just for Mars, it'll also do routine launches of satellites and cargo to places like the ISS, geostationary orbit, etc. It's intended to completely replace the Falcon 9 and Falcon Heavy, so it's going to be doing quite a bit more than going to Mars.

[@HuntingTarg]

I think a dozen flights would be great reusability - a hundred would be phe-nominal! It might not be a far-off time where someone is on Mars or a Jovian moon trying to explain to their students or children (one and the same?) What the days of aluminum & carbon fiber rockets were like and why it took six decades to make reliable rockets out of steel. I should plan to see a Falcon Launch soon - there will be more while Starship is being tested.

[@cr-xgus6714]

Although remember this is only starship that they are planning to make out of stainless. The rocket, or BFR, is likely going to be made of the same composites as falcon, if I'm not mistaken.

[@lukenuke8821]

Yes, the rocket could be reused BUT the initial challenge is to get it up to mars, bring it back and most importantly have it's crew not die. Then, when the rocket is safe home it will be possible to do repairs, change the outer most layer or shields or whatever. The rocket itself will be the same but it won't land and go back again instantly. The structural integrity of the steel won't be the same the first time it launches and when it comes back. What I'm trying to say is that the initial challenge is to: build rocket to get to mars and back, then the next challenge would be different, use old rocket to get people to orbit.

[@jeremiah1st]

I would fly to the moon a couple of times before flying to mars but Elon has other impossibble plans. People wake up from this fakery

[@cr-xgus6714]

​@@jeremiah1st More crazy, unrealistic Elon goals. It more nonsense like electric cars, tunnels, re-usable rockets, etc. When are people going to realise that Elon's plans never amount to anything.

[@MrTattooASMR]

SpaceX is killing it right now. I hope this works!

[@ronschlorff7089]

The words "space" and "killing" probably should not be used in the same sentence. Just say'n! :D

[@24680kong]

If Musk keeps forcing his engineers at this pace, that might be literal!

[@ronschlorff7089]

@@vonn1334 no thanks, I suppose you might be using your head right now, Mr. Richard Cranium! LOL.

[@ckck519]

As someone who works in Aerospace Metals I love these videos. Can you make a video on Nickel Alloys in Aerospace? Or perhaps Cobalt alloys!

[@haikiri2011]

Real Engineering 10:36 Sometimes you just need to make mistakes to learn, which is why you should sign up to Brilliant...

[@JC-11111]

FYI that aluminum CNC'd away IS NOT wasted. It's collected, melted down, and reused to make new aluminum billets. At least it is in any other business besides SpaceX. I assume they do the same. No one would just "waste" that much aluminum and just throw it away, actually wasting it.

[@myvids4329]

Can't do that with carbon fiber, which is what the BFR was originally going to made from

[@consciouscool]

They recycle at the space center and at space x.

[@pdoylemi]

Yeah, but the value of the aluminum shavings is tiny compared to the part they were shaved from. The original part might cost hundreds of thousands of dollars, and you get to sell back a few thousand in scrap aluminum - it is just slightly better than a total waste.

[@24680kong]

They don't call it "waste" because they throw it away, they call it that because it is a waste of time, energy, and money. The more material to be removed, the more time it takes (man hours and machine time) to remove it. And it takes a lot more electrical energy to do this. And all this brings up the cost. They don't get much money back from their aluminum waste. Designing parts with less of this waste is super important in producing things economically.

[@pdoylemi]

@@24680kong Isn't that basically what I said?

[@BootlessDave]

Space X: "I can build reusable rockets that land themselves on land or on water at the same time!" Wind: "Can i come?"

[@toddhoward1498]

Landing rockets on the wind is a genius idea

[@Yor_gamma_ix_bae]

Heh sad that they only recently figured out it was a bad idea to reuse rockets and thus had to figure out ways to rethink the dmg caused by rentry.

[@belkys120]

BootlessDave : HAVE U EVER SEEN , ONE LAND .?? 😳😂🤣😂😳.....

[@Yor_gamma_ix_bae]

selling bad ideas is the best kind of entrepreneurship.

[@0EEVV0]

@@Yor_gamma_ix_bae who's "they"?

[@BradiKal61]

This week SpaceX just sent a live crew to the ISS, which the US hasn't been able to do for nine years. Elon Musk has his quirks but he is the kind of entrepreneur that America has been lacking for about 40 years, a true innovator and achiever. many other companies have not made nearly so much advancement in their fields (im looking at you,, car companies) but Musk is pushing the envelope and getting results. (by the way the most advancement weve seen in AUTOS was also due to Musk)

[@wajapip]

Innovator? As long as you land on a parachute in the ocean? Old stuff, that was the way 60 years ago. Be real and land the normal way on land.

[@reed2939]

@@wajapip cringe

[@craigspakowski7398]

I think one aspect that was missed in the video is that Stainless steels have also come a long way as far as properties in the last 50 years. They are generally easier to weld than aluminum alloys and not prone to the same fatigue life. In general Stainless steels have gotten significantly stronger (UTS) in the last 30 years and therefore can be considered an option that was not feasible in the 60's of 70's.

[@TimothyWhiteheadzm]

One important factor you didn't give enough attention to is the fact that with very large spacecraft, there is more room for carrying extra weight. For smaller spacecraft there is a very small margin and any extra mass means significantly higher launch costs per kg. However, for a large reusable spacecraft the equation changes dramatically. There is much more room for extra mass and reliability and reusability become far more important. The main reason why super large rockets have not been used till now is the lack of reusability meant the greater complexity of larger rockets was less economical than small ones. They would have had to launch large numbers of satellites on every launch to be economically viable.

[@iainstenhouse8399]

Also this is not for spaceflight, it is only for testing the dynamics of the vehicle when landing vertically

[@bluegrayskies3831]

Timothy Whitehead that’s what everyone thought when they decided to make the space shuttle, and now look at it.

[@splintcell2692]

They says SSTO's sucks. Let's see till someone built a cost efficient and quality SSTO then that kind of rocket reusable will be obsolete.

[@iainstenhouse8399]

Splint Cell eh as nice as SSTOs are on paper it’s far more efficient and cheap even with potential future innovations. Why try and make something a ssto when for the same cost you could have a 2 stage rocket and launch far more. Do not get me wrong sstos are cool they just don’t really work for Earth

[@iainstenhouse8399]

Oh and I assume that your on about a reusable ssto.

[@spike7112ify]

"Think like an engineer" dangerous words to say on the shop floor.

[@_BL4CKB1RD_]

Starship super heavy catch just yesterday what a time to live in!

[@doc2help]

Cooling the skin with cow farts!! Intriguing.

[@joseinfante5054]

Hoo ...! Yes, and use virgin girl's piss for fuel ..!

[@epiccollision]

Liquid cow farts

[@TheSOULBRUVVA]

ITS MORE COMMONLY KNOWN AS SWAMP GAS...sorry i shouted, some of you still hand your dicks in your hands!

[@larryechols8487]

@@epiccollision , good idea.

[@MehNamesKing]

Nah it's for aesthetic. Obviously.

[@Sataka23clips]

The KingTeam apple has joined the chat

[@vedant6633]

@@Sataka23clips lol

[@viktormikhaltsevich7400]

Amazing content and good material knowledge! Another interesting consideration is application of torsional loads unto the material as Kepler's laws take over. This certainly makes isotropic materials like SS a preferred choice, at least until we can improve composite material science to respond equally well to compound forces. However, there will always be limitations associated with substrate selection for various coatings/shielding, especially as their CTEs vary and internal strain is created. Looking forward to other videos!

[@jasim233d]

It's june 2024! Super heavy booster and Starships 4th flight test is successful with splashdown of both vehicles on the ocean. 🎉

[@arshaghazie]

not gonna lie, the sight of rocket landing is super cool

[@johncoryell]

Thanks for being honest

[@MFEeee]

It’s crazy how technology is unfolding before our very eyes. In a few decades these moments will be in our history books. Elon is definitely one of the most important pioneers of the 21st century. Imagine what he could do in the field of medicine

[@eninn]

He IS the most important person of the 21st century kzbin.info/www/bejne/eInGmHWcnpmrrtE

[@markwind5428]

@@eninn Its crazy how far he pushes mankind into the future. As we all become part of history, he will be more then a Pioneer, he will become a founding father of some sort (to use American concepts) - To a way of life that we only now begin to see glimpses of. #FalconHeavyReturned!

[@derekm424]

Create a monopoly feeding off a socialist healthcare welfare system and impose his will all over the world?

[@MFEeee]

Derek M I meant technologically. Not politically

[@scsi_joe]

I think more of Elon's-type should be invested in medicine. Let's back off from the tech for a while and focus on human health. There are too many serious diseases right now that have gone uncured for too long.

[@kanva4]

SpaceX is seriously a hot topic right now

[@thishadowithin]

So is Tesla. Lot's of skepticism how they're going to survive. Well, that and their solar city plans.

[@Keldor314]

@@thishadowithin SpaceX came out of nowhere and is suddenly launching more than half of all American rockets, and more than a quarter of all rockets in the world. And since Falcon 9 is a medium to heavy lift vehicle, if you compare by payload capacity, the number goes to greater than 50% of the world. If more than half of new American made cars were Teslas, you'd darn right be talking about Telsa being wonderful too.

[@thishadowithin]

Keldor314 do you believe over half of America will drive a Tesla? They might want to not drive in Winter months. Doors that won't open and completely drained batteries in freezing weather. Not good.

[@thishadowithin]

Keldor314 oh and don't forget, his solar empire is collapsing. Double uh oh.

[@forloop7713]

Spacex is profitable but tesla is not. Tesla is also government funded

[@SnackPack913]

It’s funny watching this 4 years in the future where they have just successfully blasted starship into orbit

[@zach4832]

*Me acting as if understood anything he said in the video*

[@LordSandwichII]

Well, it is rocket science, so...

[@taliakellegg5978]

Same

[@RU-zm7wj]

Physics 101.

[@uTubeMeltsYourBrain]

Da fuck? He’s not even using any math.

[@tiagosimoes6070]

its easy you see? its just... rocket...metal... hot...hmm...wind making rocket fall over....hmmmm..science, its... easy

[@seq165432]

Matt Groening deserves credit for the design of that spaceship - because I've seen it before on Futurama!!

[@jeremiah1st]

And I have seen it in Thunderbirds 50 years ago

[@hebegebes1785]

@cosmicVox13 i saw it on buck rogers

[@adambomb8324]

I saw Marvin Martiain arrive on planET earth in that exact same rocket. I think Bugs Bunny rode on one of those too.

[@dbannerman9488]

0:09 that fox is a classic image

[@superspies32]

Who come here after the launch? Starship roll multiple times at highest speed and still intact before be self-destructed. Its shown that Stainless steel is ultimate choice for it and maybe later space rockets.

[@konkam744]

Nasa had made a rocket from stainless steal and it couldn't stand its own weight if it wasn't pressurized, it collapsed on the launch pad

[@fightwithbiomechanix]

Can I just say you're a major reason I am getting a Certificate in Data Science and a Masters in Material Science & Engineering. Thank you!!!

[@dahorakk]

What I learned: Space travel is just min/maxing.

[@Real_MisterSir]

Yep, there are no do-it-all solutions in space travel. It's always a matter of where and how you compromise for the job you need to accomplish. It's the same with the rocket science behind the engines etc, there is never a holy grail solution for any problem - only solutions that sacrifice as little as possible of what is essential.

[@ChiccinTendies]

@pyropulse Yeah this kid needs to go outside more and realize that the game of life is literally min/maxing.

[@thiencaunguyen1078]

Gồ

[@iamcarbonandotherbits.8039]

They couldn't decide on a colour for the ship, Then when the sun's rays hit it, Oooooohh Shiny, We like that, Sod the paint job.

[@entropyz5242]

One year later and it has worked

[@paranoidise6458]

Its elon musk, nothing is strange with this man

[@ColtaineCrows]

The strange thing about Elon Musk is that he gets credit for other people's ideas, pretty much like Steve Jobs. I mean sure, he's building things that are cool, but people attribute the ideas, like that vacuum train thing, to him, which isn't the case. Not that I think the Hyperloop is going to become a real thing any time soon, there are a lot of risks to it that I don't think were considered early on. Like super sonic wind in case of a ruptured vacuum tube, leaks, pressurising and re-vacuuming the tunnels at stations etc. I thought of vacuum trains in my early twenties and I had it pretty well worked out, but my oh my the BOM cost on that thing would be *ludicrous*! To make it safe you'd have to have layers of progressively lower pressures for the tunnels themselves, then you'd have to have a maddeningly slow trip through a series of air locks for every station, you'd have to carry air for the passengers. To achieve a faster speed than current common trains you'd either have to climate control the entire tunnel and engineer a way to make insanely smooth and level tracks and wheels, or rely on maglev, which involves cooling the rail in a vacuum which is a whole other hurdle. But yeah, enough about that. BTW, vacuum tube trains were thought of at least as early as 1799. In any case, sure Elon does some neat stuff, but it's not as if he's that clever, he's good at getting the population engaged and investors hooked, the rest is a touch of daring to try ideas that other people pushed to the side. In some cases, like landing boosters, the tech probably wasn't there before recently. Pretty much same story with electric cars, since these too go back almost as far as the very first automobile(aka the one that wasn't a re-purposed horse carriage that Daimler Benz put together).

[@thishadowithin]

@@ColtaineCrows That's true. But he's the image when people think SpaceX or Tesla. He sells the name. He's basically the Aflac Duck from that one commercial that the duck keeps yelling AFLAC!!! I can't think of it now..

[@readytokill123]

@@ColtaineCrows Yes but he is the head engineer for SpaceX and the reason for that is because he can't find someone better for the job. So he obviously has to be quite smart to be able to be the head engineer and I'm sure he'd have a lot of input in all the engineering feats in both Tesla and SpaceX

[@benitollan]

I highly recommend watching Scott Manley's videos to learn about rocketry stuff in a divulgative level (there're more interesting channels but that's the one I'd always recommend first).

[@owenrichards1418]

The StarSHIP is the full-sized human-rated vehicle that will go to Mars. The StarHOPPER is an unmanned test rocket that will only go to five miles of altitude and is solely used to test operations and the engines for the 'real' ship. You keep mixing the terms up and saying that the StarHopper will go to Mars.

[@greenbanana311]

Well, it's not like he's doing this professionally, though, is it? Oh... Wait a minute...

[@HunterNapier]

Should do an updated version of this

[@snootdingo9365]

Short answer: they felt like replicating Queen Amidala's ship.

[@greenbanana311]

What's with these trite, vapid comments?

[@waynebow-gu7wr]

@@greenbanana311 I think the ' Queen Amidala ' remark refers to an old scifi 'Silent Movie '. kzbin.info/www/bejne/r6C1gKJqitdnb8U

[@vegacomplex8290]

@@waynebow-gu7wr you ever seen the Star Wars prequels?

[@waynebow-gu7wr]

@@vegacomplex8290 No I haven't... but I realized after posting the link , it was Queen Aelita. But the space ship does look like Musks !

[@EarthChampion_TophBeifong]

If Elon really take us to Mars and comes back, his name for sure will go down in history as one of the first pioneers of human interplanetary travel, and the best part is that most of us will be here alive to witness his success.

[@Bryan-Hensley]

Most likely this ship will also be the first to take humans back to the moon. It will be just a half orbit, but it's still going to be a historical event

[@juster2432]

You people are idiots he wants to go to mars so when the earth is a dump rich people can have a place to go

[@Bryan-Hensley]

@@juster2432 you should leave Earth. We do need rid of trash.

[@juster2432]

@@Bryan-Hensley your trash yourself your not better than anyone else ass

[@EarthChampion_TophBeifong]

@@juster2432 You seem the type of people that believe the government is always spying on you, that the earth is probably flat and everything is part of a plan of rich crazy people to control the universe. Of course the mission of mars is fueled by exploration for new resources in a different planet, if mars is successful then we will go to other moons to do the same. How do you thing europeans discovered America? Australia? All of it fuelled by economic needs and the human spirit to spread.

[@BullCheatFR]

“On the surface though the whole operation looks a bit like a shitshow” 😂😂😂

[@bergonius]

It's just highlights how far they went in just 2 years.

[@BullCheatFR]

@@bergonius yeah. I just thought that RE brings it up in a funny way

[@jeffbenton6183]

10:25 "on the surface though, the whole operation looks like a bit of a s*** show." I really love how Brian can geek out about Elon Musk's ventures and criticise them at the same time. We need more people like that following Tesla's and SpaceX' developments.

[@chinito2912]

Elon Musk: “In this spaceship we will reach mars” Spaceship: *gets knocked down by wind*

[@TauLepton-od3zz]

that's just hopper

[@shockwave2291]

"Tis' but a scratch!"

[@theholderscock]

Elon musk: *tests it without he top half*

[@CardZed]

@@theholderscock thats the plan lol, this thing wont go to space. Its like the Grasshopper, just tests.

[@austinbarnard7688]

Starrrrrrrshipppppp is almost ready 🚀

[@arfhqal]

I don't understand a thing but looks great...

[@vegasspaceprogram6623]

Love the profile pic

[@madhavagrawal8303]

Dude, you are better than my physics teacher. You might have just inspired a kid to become an aerospace engineer.

[@bramantyopamungkas2368]

Astronautics engineering student here. Its super challenging. Math.. and programming.. and math.. and programming.. calculus everywhere

[@a-drewg1716]

seriously though most people want to be a aerospace engineer, but then you go to college. Then you take an engineering calculus class and you realize....... that liberal arts degree doesn't look so bad anymore.

[@DJLite4011]

Be inspirational.

[@markrainford1219]

Has anyone asked the Martians how they feel about being colonised?

[@projectkepleren]

i don't know. i don't speak communication protien my cell sure as hell do

[@joseinfante5054]

They are not going to be full of garbage because TESLAAAAAA was Killed not to go there and come back in 5 minutes.

[@jypsridic]

Don't worry, if DC has taught us anything it's that martians are weak to fire, and fire is something humans are particularly good at.

[@joseinfante5054]

@@jypsridic Fire wath ? rockets hungry for fuel and slow as snails, or scrub fires?

[@jypsridic]

@@joseinfante5054 It was a comic book reference

[@Patchuchan]

Use of propellant for cooling during reentry is not as unusual as you think as this is not the first time it was proposed on a space vehicle. It was featured on a lot of Phillip Bono's designs such as the SASSTO and ROMBUS.

[@b-man2961]

Could I also suggest that Stainless Steel might offer greater protection from particle bombardment and Hard Radiation, as well as the other benefits?

[@greenbanana311]

Nothing's preventing you from doing so.

[@DisabilityExams]

Electric cars - first produced in the late 1800s Rockets - took men to the moon in the late 1960s Elon Musk - builds electric cars and rockets = amazing visionary

[@Thyalwaysseek]

LOL IKR what's up with that shit?

[@shockwave2291]

Electric Cars - Cost more than Gasoline Cars on average and hardly anyone uses them in 2010's Rockets - Hasn't taken people to the Moon (or anywhere else) since the 1970's, and Space Exploration has grinded to a halt in the 2010's Elon Musk - Is trying to change both precarious situations = visionary AND innovator

[@shockwave2291]

@@MusingsOAM What Elon is doing today is similar to what Steve Jobs and Bill Gates did for the Consumer Electronics sector.

[@samlabo1688]

He is also the pioneer in tunnels I heard

[@FrVitoBe]

and amazing insect killing tool

[@leslireimers708]

I agreed with everything you said. But you did not seem to want to replay. So much fun. I am always here for you!

[@i.i.iiii.i.i]

"Sometimes you just need to make mistakes to learn, which is why you should sign up to brilliant." Sounds like it's would be a mistake to sign up :P

[@doktorsalami9315]

yeah, and you (obviously) should so it

[@gaslitworldf.melissab2897]

That said, why bother sending humans until much of it has been perfected to the extent deemed possible by the team. Why suffer loss of human life for something experimental when we can record everything with computers, even diagnostics. Probes can collect faster than humans requiring no additional food to perform. Once we feel ready, we should build a station just outside the atmosphere and expand it over time to add researchers and astronauts and to experience the physicality of being in space. If they need to return they won't be too far away to do that.

[@doktorsalami9315]

@@gaslitworldf.melissab2897 The problem with that, is that we can't build a perfect machine. Imagine we would have waited to drive cars until they are 100%ly safe. We wouldn't even drive today. That said we shouldn't wait until we have the perfect rocket (which we won't ever have) to send humans in space. You wouldn't believe it, but the ISS is a space station outside the earth atmosphere where we sent Scientists to experience the physicality of being in space. And they return. Thumbs up for that. In my book were ready for further steps

[@sugarbum1921]

“Why did space x build a stainless steel starship?” Answer: cause it’s cool

[@saipbop8194]

Haha yeh that's what whole the video was about

[@ax2bxc]

Cost, ease of production, structural strength

[@DrewLSsix]

Nope.

[@ax2bxc]

@@DrewLSsix have fun with your fake likes

[@ronschlorff7089]

yup, cost alone is worth it! Add the rest and it's "not rocket science" to see the reason for choosing it! LOL :D

[@jahmalbaptiste9915]

"Sometimes you just need to make mistakes to learn... *Which is why you should sign up to Brilliant*" Damn that was brutal XD

[@joseinfante5054]

The problem is this one, you learn to create mistakes and you can't create anything else and you are 100 years late. Damn this is brutal. Albert Einstein will smile when he sees these Havana cigars, hungry for fuel and slow as snails, after having seen Tesla UFO testings at 100,000 Klm / h. Real engineering 100 years late in time. TESLAAAAAAAAAAAAAAAAAAAAAAAA

[@davidcadman4468]

few months later, and we are on the cusp of Starhopper doing a 20 m hope, with Starship doing a 20 Km hop in a few months. Hope you will do a follow up. cheers

[@dheemanrajkhowa2866]

Please do one on the raptor engine as well!!

[@austinbarnard7688]

I’m from the future starhopper did it, StarShip is coming 🚀

[@squidwardfromua]

I like how you explain their decisions just before SpaceX to change them

[@RiggingDoctor]

How thick are space ships if 10mm stainless steel walls was “extremely thin”?

[@ignasanchezl]

Do you know how much is 10mm?

[@RiggingDoctor]

ignafiltro 1cm. In the world of sailboats, a steel hull that is 5mm thick is considered very thick.

[@RiggingDoctor]

ignafiltro in fiberglass, yes, our own hull is about 20mm in the thin spots and 80mm in the thick spots. Metal hulls are much stronger and therefore always much thinner than fiberglass.

[@iant720]

Rigging Doctor my thoughts too!

[@gregarend8270]

This video is interesting but has some misstatements. It says the early Atlas tanks were 2.5 mm to 10 mm thick. They were actually closer to 1 mm thick, and in some areas less than 0.5 mm thick.

[@yungstallion2201]

Elon musk should host meme review instead

[@thishadowithin]

Meme 👏Review 👏

[@chessmoon]

stainless steel body improves the flux dispersal generated by the flux capacitor,

[@takulartom]

chessmoon exactly! I was thinking the same thing. Doc Brown for the win

[@Taylor88Productions]

I'm surprised they're using 1985 technology like the Flux Capacitor. Plus the cost of converting the Flux Capacitor from DeLorean to be used in space travel... Btw, what is Alimeniam? Is it a new kind of aluminum? 😁

[@techbargains9863]

@@Taylor88Productions You know the Brits .. they talk weird.

[@Taylor88Productions]

Tech Bargains that’s for sure !

[@allenbrininstool7558]

:-)

[@MindbodyMedic]

holy crap, they machine those grid patterns!!

[@hiphop2kful]

God Is In The Details ok right holy fuck. probably took 1 year

[@finalbox4416]

Real Engineering is on Trending!!!

[@hoobaguy]

The good ship Planet Express Ship.

[@TheExoplanetsChannel]

Great video!

[@keithisakson8397]

Thing needs an ACME sticker on it! ..piloted by Wiley Coyote

[@douglasrowland3722]

The Martian will be at CapCom.......

[@redbepis4600]

Elon: My goals are beyond your understanding

[@Mrclarkepayne]

"Some would say I'm the reverse"

[@joseinfante5054]

@Billy West Elon has the money but doesn't have the wisdom, so forget about Mars. Possible hotels in space for the rich and trash in space for you.

[@joseinfante5054]

@Billy West there is nothing to know about Havana cigars hungry for fuel and slow as snails. They shit themselves to reach the moon 40 years ago and it was only 385 thousand km, do you think you have a chance to go 58 million km to Mars in which fuel? Ok on virgin girl piss. After Nikola Tesla invented free energy and patented a UFO 100 years ago, this is a SHAME for Elon, for NASA for pseudoscience and for you. SHAMEEEEEEEEEEEEEEEEEEE

[@Prich319]

I would also imagine that stainless steel has a better fatigue life than aluminum, meaning a reduction in maintenance hours.

[@MegaBoilermaker]

Possibly not as the choice of alloy for both metals is enormous.

[@minhucovu6321]

The material used is probably austenitic stainless steel, which doesn't have a fatigue strength.

[@Official_Mr_Lex]

Dude we need an updated SpaceX video. So much has happened since you released this one.

[@Nunya1721]

"Star Hopper" - Never hops to a single star

[@MouseGoat]

@TM Films go to Will never space

[@kaberus7565]

Some day we will.

[@michaelmurphy7177]

My dad worked in the aerospace industry he told me the engineers were having problems with weight and a janitor said use perforations like toilet tissue, he said it tends to tear other places than perforations.

[@Tidoublemy]

Explain this concept further?

[@movax20h]

5:05 , you say that CNC ing isogrid from thicker material produces a lot of waste (95%). This is most likely not true. It is recycled. It is easy to remove lubricants and remelt it, or as a part of another batch, and create another cast. It is just the problem of time and big machine required. These machines are rather costly, and it probably day or two to machine out one section even when toolpaths are optimized and very high feed rates are used with first past done using coarse milling and big tools.

[@StillAliveAndKicking_]

The sale price of waste metal is doubtless far below the original price of the stock, hence waste is a significant issue, along with the sheer cost of machining the items in the first place.

[@24680kong]

Wasted time, energy, and money is still waste.

[@engineer9528]

By far my best video in Real Engineering Channel :) Thank you!