Rocket Motor Assembly - Building Lumineer

[@Giftedmike359]

It’s really nice to see you pushing more of your natural energy into your on screen presence. I admire that.

[@The.Talent]

It’s called “Hot Girl Energy”

[@boardsort]

@@The.Talent BPS definitely improving the aesthetic appeal on this video!

[@prolska]

Dude i like his "immensely complex & high risk moonship" t-shirt

[@__KursK__]

@@The.Talent lol

[@treavormiller9552]

xyla foxlin has added so much to this series!

[@BPSspace]

Dude she's a force of nature

[@jcims]

Her energy was all over that camera work lol

[@TheBookDoctor]

In my secret heart of hearts, I can't help but hope that Joe and Xyla make each other very happy someday.

[@anamethatlastsforeverinternet]

@@BPSspace Kis her boi hehe

[@treavormiller9552]

@@anamethatlastsforeverinternet ah yes because having a friend of the opposite sex immediately means you need to have a thing for them.

[@crasbee]

23:13 "Barnard Propulsion Systems my a**". Well now you can not say anymore that you have built every part of a rocket EXCEPT the propulsion. Now you are a holistic rocket company 🥳

[@CDRaff]

I'll never forget my grandma watching me work on painting the frame of this moped I had. She says that I should probably be wearing a mask and my grandpa, who had just walked out the door, without missing a beat says: "He's not wearing a mask so he can get high dear.".

[@Arae_1]

Lmao nice

[@BobaGotFett]

This is why I spray paint my hobby projects... Within the bathroom bath tub... With the door closed. The other night, during dinner, I told the wife and kids that the chicken tasted like purple.

[@CalicoCat8888]

Absolutely underrated comment Beautiful

[@Tonatsi]

"This one sparks joy" He is cultured

[@ninthninja05]

"Believe it or not, the O-ring is important." - Morton-Thiocol engineers

[@deepbloo580]

That a great call back... and dark.

[@dawica]

😂😂😂😭😭😭

[@spamcan9208]

It was the cause of the Challenger Shuttle explosion for anyone confused.

[@hihi-rp2uy]

Jesus thats dark

[@blindsniper35]

​@@hihi-rp2uyoh it's worse than that. Essentially the manufacturer engineers warned the o-rings could fail in the conditions NASA wanted to launch. So yes, part of the joke is NASA was warned ahead of time this was a potential outcome and they launched anyways. So that's why they're quoted as saying o-rings are important. It's actually a pretty interesting story that's worth learning about. Especially for what happened to the guy who warned them.

[@gionag]

why don't put a dowel inside the "discharge" hole so they are aligned no matter what ?

[@BPSspace]

Cause ya boi has the IQ of a ham sandwich sometimes

[@The.Talent]

This is the “mandrel” that they were talking about at 23:58. They mentioned that they “would have gotten glue on the mandrel”. This would then mean that the core’s burn surface would have bits of epoxy all over it. Not good for steady and consistent burns.

[@1320crusier]

@@erictheepic5019 Keyways ftw. The casing and such would be more expensive but the assembly would be less error prone.

[@cheesus8594]

Just tape the grains together, glue em and insert them as a whole

[@sigmasquadleader]

Pure oxygen still doesn't catch fire... it just ignites fuels around it.

[@MyMinecraftCreeper]

Watching this series after the launch really makes me realise why you were so emotional at the launch. You but alot of work into this rocket - very inspirational!

[@Brixxter]

You can tell it's gonna be a fun one when Joe wears that shirt

[@danielcampbell3542]

You mean Elon Jr ??

[@Youdontwannaknow..]

Daniel Campbell pretty sure he did. Poor guy got replaced

[@Brixxter]

@@danielcampbell3542 nah I don't make overused jokes

[@danielcampbell3542]

Everytime I see him that's what I see. The resemblance is uncanny.

[@LiaIsTheCutestKitten]

Something you have to admire about rocketry is to the untrained eye just looking at the parts you'd think "That looks simple enough" but inevitably everything down to the last fraction of a millimetre has to be within spec else it can snowball into a complete balls up. The planning alone before even having parts to assemble is amazing to see. I don't think I could stomach spending as much time and money on something that will instantly reflect a mistake in glorious high speed failure. That takes immense character and strength of which I can only hope to possess one day. With that being said I love how entertaining and encouraging you all are when setting this up. The way you make it seem so attainable to mere plebs like me whilst also making it clear effort does go into this is awe inspiring. I look forward to seeing how this progresses as with the other builds

[@mattshaffer5935]

I was always interested in the stack up of these bigger rockets so this was super interesting! As a former mold maker and current engine installer/tester for a jet manufacturer I can attest to the benefits of double gloving! Rock on Mr Barnard!!!

[@It_Is_I_I]

this is the second jankiest rocket factory i've ever seen, right next to spacex's garage thing and tank farm. and by god i'm all for it, it makes rocketry way more interesting

[@pladselsker8340]

I didn't realize up to this video how damn good of a job the camera girl is good at doing her job. She's like glued to his movements, it's quite incredible how attentive and responsive you need to be to have continuous good shots.

[@fullflowaerospace]

Yes XYLA is EPIC

[@SheenylHassan]

Looks like Xyla has been on BPS more recently than her own chanel lol

[@elijahbachrach6579]

It is sickly satisfying to watch you freak out over the stress of a glue up that could ruin your entire project if it fails. I’m a custom furniture maker and this is a genuine right of passage for all “makers.”

[@AstroCharlie]

Missing the rocket homies! Can we build a rocket motor together again soon?

[@shere_kan8329]

hi charlie ! do you intend to continue your serie of video about that 54mm solid rocket motor ?

[@ronin2963]

Maybe her next kayak can be a rocket theme. She is very good with material sciences

[@palliyil]

@@ronin2963 Maybe a rocket powered kayak

[@ronin2963]

@@palliyil She will have to make new body armor for that. Probably wont be quite as fashionable.

[@richspillman4191]

The GoFast rocket used 500lbs of propellant and made it to 73 miles. Check out the rocket "Death From Above" for what a 'real' rocket launch sounds like, search 'EXTREME ROCKET!!! O25,000' It pulled 75G's. WHOOMP!!! That's an o

[@simonabunker]

You have a great team there. Do you think you would have even attempted this without Charlie Garcia there? He seems like an amazing font of knowledge!

[@marmaladekamikaze]

just wanted to comment, that anti-static bracelet, grounding the motor and doing all propellant loading on a humid day, in a humid environment are all essential to completely eliminate static discharge igniting the motor. The speed you were adding the fiberglass fins, could definitely build up a charge. Liking the content either way, Ad astra!

[@dansv1]

Is it ok to do the assembly in a residential dwelling. I know nothing about rocketry, but that seemed a little sketchy.

[@alex4alexn]

could you light one of those cores with just a common lighter?

[@tymoteuszkazubski2755]

Isn't it a standard procedure to keep igniters shorted?

[@richspillman4191]

@@alex4alexn It takes an open flame or a red hot resistance wire making contact with the propellant. I've set some off with a solder iron. Many hobbyists 'cook' their rocket fuel for better ingredient integration, the flash point is fairly high. Depending on the formulation, of coarse.

[@richspillman4191]

@@tymoteuszkazubski2755 Yes, just like keeping ammo in a separate location when cleaning a gun, igniters should only be introduced to the motor on the launch pad and power up procedures adhered to for safety.

[@bozothejew4850]

i will keep asking when will the next episode of landing model rockets come out for blip and blop?!?!?!??

[@BPSspace]

We're done with that series - sorry! I stopped enjoying producing those videos. I know they're helpful, but I wanted to focus on projects I found fulfilling to stay away from burnout.

[@brickonblock5183]

Is there going to be a new series/ Video with tvc and all that stuff? (Kinda like the Video about the smallest flight computer, I really enjoyed that)

[@akhilathawale725]

@BozoTheJew if you scroll through the channel, the next part of Landing Model Rockets series has been covered in Joe's NAR presentation, where he discusses how TVC works, and provides a broad overview while going into workable detail about the flight software. The specifics, as always, are upto the DIYer. So now, you have the early Scout videos for airframe assembly, the parachute section has been covered in vivid detail recently, and with enough practice and Googling skills, you can recreate the TVC mount. That's (a) the airframe (b) the TVC motor mount (c) Parachutes - done. The Landing Model Rocket series covers the flight computer building and assembly, and gets into cursory detail about the Arduino environment. Then comes the NAR conference presentation where Joe explains how PID control works in TVC. So I guess the Landing Model Rockets series has already been concluded completely.

[@bozothejew4850]

@@akhilathawale725 much appreciated, but i have tried to some code that would work with it the tvc software but no luck if you have any information please let me know

[@slayer1505]

I’ve been building a rocket for the Spaceport America cup for my university and boy can I say watching these series of videos has been so informative. Great work man!

[@fullflowaerospace]

XYLA sparks a lot of joy in this video

[@jessyltr581]

Hey man :) I work with epoxy often and you really should ventilate the room or wear a filtered face mask from 3M. You seem to be doing bigger and bigger rockets so it'll mean more epoxy curing in your home. To ventilate the room, you make a filtered intake twice as big as the exhaust and you pull through the intake. The room will be positive pressure so no dust will come in.

[@snarkylive]

"This situation" is how I'm going to describe that shape to my SO from now on.

[@jamesbramlett5407]

My hometown Denver Nuggets color guy (former player) was at ESPN doing something when he ran into 'The Situation' (jersey shore guy) who said , 'Hey, I'm a big fan' but the player had no idea who that little due was, so the sitch lifted his t-shirt...showing his abs, and said, 'Im the Situation!' Player: good for you ....Security, please escort this jackass off the premises ;)

[@CruzMonrreal]

Ngl, I was a bit triggered when the acetone wasn't even previously opened.

[@richspillman4191]

He needs to get serious about assembly rehearsals and repeat them three times, no giggling allowed. Ask Gus Grissolm how funny failure can be.

[@fullflowaerospace]

“Well ya boi has the IQ of a ham sandwich sometimes” Joe Barnard - 2021

[@OkammakO]

So two friendly options/suggestions for next time: One, use a slower epoxy, there's an endless number of formulations out there, I can eagerly suggest any SmoothOn products. Two, if you want to keep using the same 10min epoxy, throw both components of your A/B epoxy in the fridge before mixing. Then store the mixed epoxy on a bed of ice/coldpack while doing your assembly. You'll dramatically slow the chemical reaction and give you a lot more time to work. You should still ATTEMPT to make it all happen within the advertised pot-life, but that extra wiggle room, if something goes wrong, is an absolute life saver when you find yourself slathered in goo and with popsicle sticks stuck all over your gloves. I use these methods all the time with all of the catalyzed polymers i use when I know things may go slower than the pot life (silicone, epoxy, vinylester, polyester, etc.). Conversely, if you've got a piece that has a long pot life and you are done with your job, you can set it out in the sun on a warm day and it will cure up dramatically more quickly. (Fun fact: almost all epoxies will gain additional strength from an elevated temperature post-cure, bonus nachos!) Best wishes and keep the incredible videos coming. Hopefully you'll find a use case for one of these tidbits at some point!

[@neutronium9542]

Cesaroni supplies the glue with the motor. I believe that the glue isn't actually epoxy, but HTPB, which is also the binder in the propellant. A different adhesive would probably work, but you might be tossing your motor warranty out the window.

[@OkammakO]

@@neutronium9542 I am not aware of a 2 component HTPB formulation, that doesn't mean it's not out there but I've never seen it. They just said 'epoxy' a whole bunch of times but 'epoxy' is often used very generically, to your point. Either way, even if it is some unusual HTPB two-component polymer, the fridge trick will still almost for sure work; as it does to retard almost all chemical reactions. If you have any more info on the precise adhesive Cesaroni use, i would love to read up on it. I'm very interested in adhesives and polymers. Don't put too much effort into finding it on my account though. Cheers!

[@FishyCanada]

BOTTLENECK Resolution - Have 2 people applying epoxy to the grains so there isn't a pause waiting for you. Also, you can have a dowel in the grain core to keep them lined up as long as you pull it out incrementally to avoid gluing it into the grains permeately. Great vid.

[@tec4303]

I love your highly polished videos, but something raw like this is also fun.

[@1320crusier]

Me thinks the grain manufacturer and casing manufacturers should think of keying them to make assembly a WHOLE lot easier and less error prone. Explosives are fun and all but you want boom boom making rocket go up

[@vicroc4]

Most of the time you don't need to key the grains, because the core is symmetrical. So most of the time, the key would just be a needless extra bit of machining.

[@literallykey3298]

Awesome! I've been trying to get into rocketry and have been teaching myself, and these videos have been teaching me a lot and giving a lot of insight.

[@markkalsbeek5883]

As you can see no rocket is built alone! Go find a local club :D

[@literallykey3298]

@@markkalsbeek5883 I thankfully have a space hardware club at my university, but I'm horribly impatient and want to just get into it (which I can't quite yet)

[@NSPlayer]

I prefer these videos to the flashy ones, these have way more interactivity and we get to see all the friends :)

[@zimkhithamdekazi612]

I love you channel and I just wanna say you’re a huge inspiration to me keep on pushing on in my go to pursue my career I’m 9 and I wanna be a proportion engineer , rocket scientist and rocket program

[@KingLordLele]

You can't have 3 full time jobs

[@zimkhithamdekazi612]

@@KingLordLele I will pick one The company I want to work out really like mixture of 70 hour shift every week no way I’ll be able to do 3

[@brickonblock5183]

Well im 14 and totally agree on the first paft of the comment. Slightly different Jobs that i want to do at the moment but that changes (at least for me) Keep it up mate you've got this

[@zimkhithamdekazi612]

@@brickonblock5183 thx hope you also follow you Dreams

[@shrey_on_youtube]

It was indeed an immensely complex and high-risk L-1 motor integration.

[@TruyeMusicals]

Did want to say, I learned an immense amount watching the entire Lumineer build series, and it seems like you learned an immense amount making it. Great job, man! 50KM or bust on the next L3 lel

[@Matthew-by6vl]

@bpsspace... Joe, I know nothing about amateur rocketry, but is it not critical that the holes in the 6 motors are aligned? If so, could you use a broomstick or pvc pipe to align as you load them into the sleeve? Love your content...I was hospitalized for 1.5 years for heart failure and became interested in space and rocketry with the help of your channel. Thanks for helping me through a tough time

[@kennethtoquero4472]

Man, how I wish I could also build rockets and enjoy model rocketry just like he did. Stay awesome, guys! Sending love from Philippines. 😁

[@firstnamelastname.7749]

Why can't you?

[@fabianf779]

Ur Videos feel so High Quality, makes it really fun to watch

[@mikeconnery4652]

Great teamwork and an excellent job.

[@kirleyq1394]

The innuendos make this 10x better than it already is 😂

[@jack_woodman]

Watching Charlie and Joe (and Co.) working to insert that grain was like something out of a movie - I was absolutely on the edge of my seat despite knowing it was all going to be ok. 10/10 better than Scorsese

[@excitedbox5705]

You can put an alignment rod down the grain to make sure they are lined up.

[@nicholasn.2883]

Immensely complex, high risk is a beautiful vehicle

[@runtimus5743]

Great video, it was awesome to meet the gang. You all seem super cool!

[@ltpinecone]

Don't know much about rockets, but I love this series.

[@micahezel3316]

Man I imagine smart guys to be super organized but y'all are just nerds having fun and I love it

[@camh3448]

Kinda sus how everyone in this video is unreasonably hot

[@dinobm13]

Great vid ,they keep getting better . Love the interaction.

[@jamesbramlett5407]

I've really enjoyed all those over-produced JB only vids with all their comedy and even 'Retro-Joe' to his roots with Bo Burnham flare but these recent collabs with Xyla really brings it down to earth (do both)

[@AcidaliaLabs]

Omg! We love you Joe! :)

[@morkovija]

This is so awesome. I wish it wasn't so mentally taxing for you my man. Hopefully one day you'll have people to do all the lubing and pushing)

[@oogityboogity6644]

The more natural stuff like this Is awesome and easier to edit

[@yashrajsingh6145]

I always watch your videos , it's great and fun , love from India 💖

[@antfarmer2227]

instead of crashing, we should call it "involuntary impact testing"

[@brickonblock5183]

iit I like that 😂

[@kingofgar101]

The ground is just the emergency deceleration system

[@dillonvandergriff4124]

It didn't break! It just experienced a rapid unscheduled disassembly!

[@katzmatt2]

when integrating the rocket into the sleeve i was FULLY expecting you to say a rocketqueef as the air rushes out

[@vincentryan5326]

Immensely Complex & High Risk

[@sbenaicha]

Exactly when I was searching for new rocketry videos

[@srwc1]

These guys are the real Big Bang theory love your videos love your passion keep it up guys don’t ever let it go

[@phoenixcollege6608]

focused on the future with bps

[@Ajtech369]

I'm glad to see you enjoying yourselves, but after the first one you didn't need to coat the circumference of the grains since it was being scraped off as soon as you pushed it in. 👍

[@LastBastionLabs]

Thanks for showing this. Always wondered how you did that.

[@Sharkerp38]

Looks like you had a riot with your friends.. Great work!

[@travisduggins]

Your friends are awesome! 🤜🤛

[@beesod6412]

My estes Enterprise just pooped it's D motors when you showed that motor on screen. just amazing

[@c4sualcycl0ps48]

I thought “forbidden caramel” 5 seconds before Xyla said it. I swear I haven’t seen this before but I’m glad I have the same mindset as you geniuses.

[@ronj8000]

The crew seems like really nice people

[@wonjez3982]

Maybe you could put the grains up on a stick, glue the ends together, cover the whole stack in epoxy and shove that into the liner?

[@cambridgemart2075]

I'm gald to see you taking all the necessary safety precautions, such as ensuring you dont get sunburn on the back of your neck ;-)

[@rong1924]

The proper way to mix resin in a cup with a stick (according to millions of dollars worth of government research) is a figure 8 motion while scraping the sides and bottom of the container. You’re welcome.

[@almaarmhk6218]

I wish i was there with you guys it's looking so much fun making assembly

[@AlanTheBeast100]

Two bits follow ... -Should have broken down the epoxy application / insertion into two people so one could focus on correct epoxying and the other on correct insertion and cleanup. -Use colour coding on the grain cases for faces to get epoxy. -Have the acetone already open (or at least loose) with someone ready to apply it. -Use a guide bar for hole alignment? (Could harm the grain surface or chip edges?). Did it really have to be a 10 minute set epoxy?

[@The.Talent]

Look up “poka yoke”. It’s a 6 sigma principle that helps you to not make silly mistakes by preventing their possibility. For example, if you use high-vis tape to mask off the ends of the grains that you don’t want to epoxy, then you physically can’t forget it and accidentally go ahead and epoxy the wrong bits.

[@AlanTheBeast100]

@@The.Talent That is a terrible idea because it introduces the potential error of forgetting to remove the tape. Simply marking the grains on the outside for "no epoxy here" with one person applying and a coach, will do the job. Murphy's law dictates that the masking tape will be forgotten in place (some time). Whether that affects the burn is: probably not. But why take the chance?

[@The.Talent]

@@AlanTheBeast100 add a “Remove before flight” tag then. There are ways around it. And it’s only two bits of tape, both on either end of the grain stack. Not going to have an impact whatsoever.

[@dillonvandergriff4124]

I did wonder why they were using 10. Even a 15 minute set would have given them so much more room for error.

[@AlanTheBeast100]

@@The.Talent Color on the paper grain carrier achieves this and does not need an extra step of removal. Less is ALWAYS more. (aka: the best part is no part - which, if you really understand 6-Sigma should ring your bell).

[@MrHichammohsen1]

Amazing video and nice new style. And you could easily see grain 1 was not aligned.

[@konjinni]

to save orientation for all holes you can use a ... plastic stick. Put all the briquettes with fuel on the stick through the holes and remove the stick after that.

[@MeepMu]

Cool people making cool rockets

[@BrianJacobson]

3:53 "I don't know how to describe what this shape is." I do. You're now demonetized. :P

[@zfrenchy1716]

I think a production meeting brainstorm utilized this video, can tweak your production line to a more efficient process, increasing also the product quality.

[@nolanreach2088]

😯🙂🥲 SURELY FUN TO WATCH ⚠️ BUT⚠️ BE MORE EFFICIENT Could've hung them onto PVC pipe(horizontally), space them apart evenly, to paint it in one go, in less than 2 minutes, also make sure that alignment is 1000% perfect by having proper PVC pipe thickness, which also will remove any possibility of having paint clogging up the core. Instead of having 10 minutes of HORROR you could have done it in 3 minutes of EASE. I'm not the rocket scientist here, and there's so many of you involved in the process, how was it not thought of, I don't even know. But I'm glad it worked, fun stuff.

[@wes_d]

Stage all the grains on a rod in a stack and pour small amount of epoxy along a line. Then slide the entire stack into the sleeve. The rod indexes the grains automatically. Remove the rod once the entire stack is inserted. I suspect the epoxy doesn’t need to be continuously coated with such a tight fitting sleeve.

[@sparrowthenerd]

Is there a benefit to the off-center moon burner configuration of motor grains? As I understand it, part of the reason for the center bore is to prevent the combustion from attacking the chamber walls until the last moment of the burn. However in a moon burner, the walls will be exposed to the combustion for almost the full duration of the burn, so why would one use that? Additionally wouldn't it cause asymmetry in the weight distribution, creating rotational force on the rocket?

[@ChucksSEADnDEAD]

You get a shift in center of gravity but it should be counteracted by the aerodynamic drag of the fins. The ablative liner seems to be purposefully sacrificial so that the actual chamber wall doesn't take the full blast.

[@gRocketOne]

In a solid rocket motor, thrust is related to the surface area that's burning. With a standard center bore, thrust will increase as the fuel burns a larger bore and surface area increases. I imagine a moon burner would give you a more flat thrust curve.

[@rpavlik1]

Wow, cool stuff. Also organic vapor filtration cartridges 👍

[@Faze_Monkeybox]

Good work

[@TheTankFG]

10 minute set time on that epoxy!!! I probably would gone with just a tad bit longer to minimize the stress! And pre-tape and test fit the stack and then glue… but good work!

[@WX4CB]

silly question.... seeing as they're offset and you need to get them aligned, couldn't you put them all on a pvc pole up the exhaust to keep them aligned and then epoxy them as you push them in ?

[@aronseptianto8142]

i believe it's because they're adding that epoxy barrier between each grain, so there's gonna be some glue excess on the edge of the hole if that glue attached to the PVC pipe, the pipe might get stuck there's probably a way to avoid that situation, but I mean, ey, you live you learn

[@WX4CB]

@@aronseptianto8142 good point. never thought of that

[@marox3G]

Greeting Bravo good videos How to easily calculate the width of the fi propellant according to the fi nozzle? Thank you

[@2flight]

very good. Thank you for sharing.

[@karlrobinson4887]

'Bout time you guys did some big boy rockit siancin'.

[@dmacpher]

Lol nice shirt. Throwing a little blue shade

[@erickp.barrales8130]

Thank u, i from Mexico, I'm working in a aluminum roket because i don't have enough money to buy something like that jajaja, I'm doing all the pieces of the roket with less than 100 dollar, i said, it's no the best quality but it works, get me luck for the first launch 🐥

[@Anupkulkarni23]

So much information. Thanks and good luck

[@Josh-zh]

You and the team are very good. Solid rocket technology is a very old technology. Humans will soon invent newer rocket technology.

[@OnkelGressi]

Ich bin schon gespannt auf den Start ;-) Mein größter Motor war ein I242. Pro38, 4 Grain, White :-)

[@epicdaniel508]

These videos are so great!

[@SciGuy700]

Love it dude !

[@yxhankun]

at 24.23 pick the whole rocket and then flash the light from above, point the light to the top hole. You will see the light coming out at the bottom.

[@peetiegonzalez1845]

"Thank you, Xyla". lmao. busted. Extra liked just for that.

[@TheBookDoctor]

Does the off-center mass of the propellent affect the rocket's stability or trajectory or anything? What about staggering the grains to balance out the propellant?

[@rob1andrews]

Any explanation of why it is off center would also be great!

[@lundysden6781]

Joe, are you filming in your home or filming apt/ party house!

[@valkyriegilman299]

What do working with epoxy on rockets and girls from Gaston County, NC have in common? It's best to double glove.

[@hard2borrow428]

K. J. U. thanks you for the instructions.

[@milesturner3150]

could you use indents in the plastic lining and engine grains to guide them during assembly, and prevent them rolling during flight? sort of like a ridge in the side that acts as a guide rail?

[@leonhma]

Dat Rocket has some drip

[@capnhardway]

All these phallic objects and industrial lube, oh my 😂😂