Hydrostatic Testing - Simplex Ep 6
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- เผยแพร่เมื่อ 13 มิ.ย. 2023
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www.bps.space - วิทยาศาสตร์และเทคโนโลยี
The first 100 people to use code BPSSPACE at this link will get 60% off of Incogni: incogni.com/bpsspace
Thanks for motivating me to learn how to use CAD and join the school robotics team! Keep it up!
Как связаться с тобой?
Телеграм есть?
Bps space plzz colabarate with SpaceCo
@@leomathguy 🔴 What Is Islam?
🔴 Islam is not just another religion.
🔵 It is the same message preached by Moses, Jesus and Abraham.
🔴 Islam literally means ‘submission to God’ and it teaches us to have a direct relationship with God.
🔵 It reminds us that since God created us, no one should be worshipped except God alone.
🔴 It also teaches that God is nothing like a human being or like anything that we can imagine.
🌍 The concept of God is summarized in the Quran as:
📖 { “Say, He is God, the One. God, the Absolute. He does not give birth, nor was He born, and there is nothing like Him.”} (Quran 112:1-4) 📚
🔴 Becoming a Muslim is not turning your back to Jesus.
🔵 Rather it’s going back to the original teachings of Jesus and obeying him.
More ....
You better make sure that water is out of that graphite before you fire the engine again.
Im very emotionally invested in simplex after six episodes.
😂 Me too!
Same here
It was beautiful for a first try!
Same
I concur
"This hole in the nozzle is the only thing that keeps Simplex from being a... Bob Omb."
*immediately designs a plug for the hole*
xDDD
I love those dudes in Mario, he should make some of them.
In a pipe, no less.
shh
Projects like these make me yearn for a quicksave function irl
can you spot the KSP player here? ;) #FlySafe!
"Revert to Vehicle Assembly"
@@sala6or sfs
Absolutely shocked that lathe chuck isn't made out of a blue tape roll.
How has no one replied to your comment bruh
@@The-python-guy I appreciate you taking one for the team.
"It's a lot easier to take pride in work that is shiny"
That is important life advice. Other TH-camrs would make that the center of their video essay, Joe just sprinkles it into a docu as if it was nothing.
This man keeping super lube in business
what's the superlube stock symbol? :)
@@9-and-3 Synco Chemical Corp isn't a publicly traded company it seems. time to pool an investment stake
Wanted to make a "your mom" joke here. I backed out because I felt it was in poor taste.
@@schelsullivan *pulled out
Your production quality has gotten very good! Fantastic series you got going.
This is some of the best content on TH-cam. The step-by-step, sequential process of learning and integrating the acquired knowledge into the next step of your evolution as the next nuclear power is just riveting.
Hey, maybe you should build the next motor with rivets.
"Even if your work isn't perfect, its a lot easier to take pride in something shiny." - I need that on a T-Shirt.
Checklists. There is a reason why people who are still alive despite working with explosives for years are very methodical and use checklists as they assemble and operate. For example the recent SmarterEveryDay video.
joe it’s 3am where i am, and there’s a weird banging noise gradually getting closer to me. the only thing i hope is that i finish this video before the noise claims me as one of its victims.
Update?
@@notnotalwen4891likely removed from this reality
@@notnotalwen4891not looking so good
R.I.P. Sam.
@@zefallafez im gonna miss him
Glad your partial gland in the plug worked. May want to consider a full gland (use the Parker Handbook as a guide) next time to avoid excessive squish of the O-ring. Excessive compression increases the likelihood of extrusion and cutting (read failure under test). The handbook doesn’t have a conical surface as an example, but it’s not hard to use it as a guide. Great content… always glad to see another vid posted :)
I worry that all that superlube on the graphite might have caused it to migrate into the pores when you pressurized the motor. When you then go to fire the motor in the future the superlube might expand inside the pores and that might crack the graphite. Just a thought.
Your efforts with the bolts is why I have always preferred snap ring or threaded enclosures for solid motors. They do become less effective if you’re trying to *really* reduce weight though.
Im a bit disappointed i didnt get to see any blue tape machining in this epsidode, but great work!
Love it when you include your frustration!! Watching all the labour going into simplex builds anticipation like nothing else.
The mix of humor and education in this videos is always enjoyable. Loving the simplex series! Excited to see the final result!
You're great. I literally looked for your videos every now and then. It was a good journey with Simplex. Create more!
Man, you are truly inspiring love this build series and how your channel is growing.
Thanks, Joe! I've been watching for years, -- your a true testament to persistence.
Super exciting series. Cant wait to see how it sums up
Great work man! Huge fan, been following for years. I am excited to see you grow and learn.
Man... u have some amazing craftmanship. Very smart u are.
Such a cool project man! I hope you learned lots and are able to improve for the next design!
this has been a fantastic series. 10/10. keep it up.
Thank you for creating the series. It has been a lot more interesting than I thought it would be :) I am really enjoying it.
That intro gets me every time. The music is great. The cinematography is great. Particularly that long last shot with the engine burning quietly in the background. 🤌 Magnificent.
This series is the best thing on TH-cam PERIOD!
Thanks for all that you’ve been doing!
Thank you! These videos are so inspiring and helps me do my job better everyday!
Your channel’s content is so engaging! Fascinating stuff.
This was such a fun (and very funny) watch! Can't wait for the next one!
I LOVE THIS SERIES SO MUCH
10:42 My favourite part of the video, so cool!
Awesome video, I can’t wait to see it fire!
One small nitpick: 1/4 NPT is the proper name for that thread. Not 1/4” NPT. The ID of standard wall 1/4 NPS (nominal pipe size) pipe is approximately 1/4” but as you noted in mentioning the 7/16 drill size, the threaded connection is much larger. I emphasize this not just because I am an insufferable pedant (although clearly I am that too) but because it’s something that confused me a bunch as I was getting into self taught mechanical design and led to substantial egg on my face at one point.
All the best!
This is one of my favorite series by far
Thanks for taking us on the journey!
So cool. Thanks for making these videos. Can't wait to see this thing fly.
This has been a blast (pun intended) to watch! I can honestly say I’m as excited to see your space shot as I am to see starship launch/land successfully. Wishing you all the best luck!
These episodes make my entire week.
Joey B. You is my hero.
i dont have the money to donate on patreon yet, but once i do, you will absolutely be the first one i do it for. ive been following for years and cant wait for the space shot and beyond!
So totally following this project!!!
Love your sense of humor. 🥰
Very cool and interesting! I like the series a lot.
yo i love this sort of video on simplex keep going your so strong!
One of the best methods I teach with parts that have lots of bolts is 50/90/100. You tighten all of the bolts to each % before moving on.
50% to ensure every bolt is seated correctly.
90%(hand tight) to make sure the pressure on each bolt is uniform.
100% torque it down!
This channel is extremely underrated, the production quality is that of a much bigger channel which I know you will be very soon, keep up the great work
I love this series so much! I design subsea enclosures, and its interesting seeing the crossovers! A tip though, when lubricating o-rings, less is more as excess lube can cause voids for seal failure!
As always sir, you are amazing! Great video, great processes, thank you!
Sad to see this video series come to an end after the next video, but SO excited for the next part of this space shot project.
Looking forward to seeing the test firing!
Good job, I saw the o-ring issue from a mile away
Every time you find one of those "oh darnit" items, that should become another entry on your assembly checklist, which you print out and check everything off as you do it.
Those episodes are amazing.
Love the videos and both an amazing project and great storytelling. I am probably saying the obvious but I imagine one of the takeaways is how important it is to build in the features and or tools to make the hard/annoying tasks if not fun at least easy. I am thinking of alignment features such as temp tapered pins to align the fixturing holes, attachment point to pull and separate components. Assembly stands to act as reaction frames to make pulling apart components easy, and car free😂.. again love the video and wishing you the best.
As someone who's built many failed sugar rockets, this series is endlessly fascinating.
Dude. You are awesome. Love your channel. Best of luck to you sir..
Liking this build, so many thanks!
👍💪✌
Thanks Joe
I'm a tinkerer as well and I really feel the redo, redo, redo process. I absolutely love watching all of this stuff I barely understand though!
Joe, Before even watching this video I had the confidence to like it. Your work is amazing and will always get a like from me.
You can use the hydrotest setup to push out a bulkhead after a test. It would ~5 psi, so you can do it hands-on well below garden hose pressure and it's not really any more dangerous than using a garden hose.
I love this series
I cannot fuggin wait for this. Big up Bruv
Heyl yeah this series is so amazing, thank you for your contributions. I remember reading October skies and now I'm seeing it haha
I really find these videos super interesting.
Outstanding episode
Thanx! Very nice tests.
I love every video and intently at waiting for you to feel that you’ve done what you set out to do (end goal wise) #BPStothemoon
I worked on self contained bob omps a lot:) Your dedication is just amazing. I don't know if you have any, but I cannot recommend you enough to have a checklist for as well as take off. Even the smallest ones are really complex!!! I have seen people who have build 100s of them fail the QA just because they thought they can do it from their heads.
Note: This might be small for a space rocket BUT yhis thing you built is significanly larger than the +90% rockets being produced in the world. You are most definitely no longer an amateur rocketeer, I really hope to watch your videos for a great part of my life, be safe and godspeed!
Your patience is off the charts. :)
Joh, you are one of the smartest youtuber.
I wish I had your skill. Well done.
Yea man of course! These are some of my favorite videos on TH-cam right now. Sad there's only one left in the series...
Really enjoy watching your videos, and am looking forward to seeing the rocket actually fly. But,😬, I was a bit disappointed you didn't see the issue with the o-ring. But, you are doing something very difficult that I could never pull off, so much respect to you
Regarding poreous graphite... in the future you could spray paint it with Krylon clear coat. Also helps keep your hands from becoming black when handling it. Did this on a 600 lbf. liquid propellant motor.
When you love what you do, you just have to do it twice. Or three times... :D
Awesome project Joe. Looking forward to the last video and a real flight in the future!
Question: didn't you just force grease into the graphite?
Testing is incredibly important and that helps with a lot of things, but especially at this scale there’s always gonna be risks. And the advisor to my college’s rocketry club always tells us to not get attached to our rocket/engine, because if you get attached you don’t want to blow it up and you’ll never fly it
Awesome work. some ideas: 1) ditch NPT, especially in aluminum, they're terrible and there's never a time that a straight seal isn't superior. I used to use NPT, never anymore. I know you know that cranking them in and out of an aluminum part multiple times doesn't feel good (I feel that pain). If you use straight thread and o-seals, like swagelok ss-400-1-OR, then the machining is dead simple. If it needs to get hot, you swap out the buna/viton o-ring for PTFE (face sealing works fine on the stiff PTFE) or if you're feeling spendy, a perfluoroelastomer like Kalrez. Omega should have alternative connection styles in those transducers, or else you can use an adapter. Still better to have someone else machine the NPTF in a SS adapter fitting to go into your straight thread aluminum part than to deal with NPTF in your part. 2) force pushing on your nozzle plug is only the cross-section of the area up to the o-ring diameter (all the rest cancels) so the big conical feature that extends past the angled o-ring groove doesn't contribute. Looks like it worked fine though. rockon
Looking forward to the next video.
If your graphite nozzle is porous to air and water under pressure, it will also be porous to exhaust under pressure
It's worth noting that, iirc, graphite nozzles are rarely made from machined graphite. As I recall, they're typically created with a ceramic binder and the other 98% is graphite power. The whole thing is hydraulically compacted into a form and then baked out in a kiln
Honest to god I've never been so hyped for a launch!! Come on Simplex!!! Come on BPS!
Tes videos sont super bon . Bravo
Great stuff! Unfortunately, repetitive assembly and disassembly are a part of prototyping and testing. Can’t be helped, except by eliminating errors by having a qualified helper to go through the checklist. You had a checklist right?
Now for some super important things you might need to hear, no matter how “differently you are built”. But I’ll be gentle, don’t worry.
Firstly, teflon tape is not ideal for high pressure threaded joints. You want to use a liquid pipe thread sealant. Trust me, this I learned the hard way. This is possibly why your pressure sensor was leaking at the threads. Are those sensors threaded NPT or NPTF? I vaguely recall you using a NPT tap…
Secondly, you need to set a torquing parameter for all your threaded fasteners and fittings. Then you might actually want to implement them. The consistency will both prevent damage to the threads from over torquing, and failure from under torquing.
Thirdly, for the pressure sensors and the igniter bolt, you need to either modify a deep set socket (an impact socket will likely have the strength to handle such a notification) or custom make a tool to tighten down a footing with wires coming out of the end. Look at a socket for oxygen sensors for an idea of what you are looking to use. This way you can constantly torque these fittings without damaging the wires. Of course there are other tools you can make or modify, but this style is simple and elegant.
Fourthly, fourthly is a weird sounding word to me tonight. That aside, you may want to consider making a puller for the ends of the rocket engine. It may be worth the effort in future builds to have threaded attachment points to bolt in eye hooks or attached straps, cables, or a collar. It may also be beneficial in multiple stages of assembly and disassembly to have a jig or stand that can lock around the casing without deformation to hold the engine firmly, but also create purchase points that you can use to help insert or remove parts/ends/etc. Bonus if you can make it so you are able to rotate the engine on different axes while being held in the jig/stand.
Lastly, please don’t use locking pliers to tighten fittings except in only the most dire of circumstances. You do some quality work, and it hurts to see you do certain things at half effort. The fiddly bits are time sucks, but they can make all the difference in the final polish of the piece, and you like polishing things now!
Thanks for reading.
www.industrialspec.com/about-us/blog/detail/npt-nptf-tapered-threads-and-leakproof-seals
I came to the comments to ask about if a torque wrench should be used to get consistent tightening, and ended up learning a whole bunch more. Awesome!
Definitely all of this. When Joe mentioned the PTFE onto the sensors...the sensors that were going at an interface of hot-itude and aluminum, the aooga horn in my head went off. Back in the way-way-back of being surrounded by bleeding-edge satellite hardware (I was one of the software nerds), teflon was one of the materials with a big ol' asterisk on it: great for some things, verboten for others. As fluorine is a wonderful oxidizer, it was generally kept away from things that could get toasty.
And, as you mentioned, torque was big for anything with threads you didn't want to leak, loosen, deform, or break. Space is exacting (sometimes mind-numbingly so), but it's the little things that combine for success or failure.
YES I LOVE SIMPLEX AND YOUR VIDEOS
When thightening down bolts and screws and what not, it's a good idea to put a marker on it with a pen.
It's typically done with one color to mark it has been tightened down and a nother color to indicate it has been verified/checked.
Amazing journey... No way I'll miss the next video.
Complex V1, what a great motor :) Oh, wh- what's that? It's called Simplex? Hmm, that doesn't feel right.
the second i saw the nozzle plug concept i knew you were gonna need a groove to keep the o-ring in place.
Babe wake up new BPS video
2:26: "Special delivery! A beumb! Were you expecting one?"
I’m wondering about the potential for the “Super Lube”, used to seal the graphite nozzle porosity having impregnated into the graphite during the static test and causing a issue, like fracturing the graphite, during actual firing of the motor?
Parker has a excellent engineering manual with regard to O-rings and glands, easily searchable and downloadable as a .pdf.
Normally I hate long intros but this one is too good to skip!
"it just took patience and a little bit of swearing" 😅
Only a little bit??? I would expect a project with this level of complexity to involve a swearing quota of galactic proportions.
My favorite part is disassembling and then assembling the rocket, i hope it happens again 🥰
This is such a great series, not only informative, but nicely edited and funny. I'm just not sure what was more time consuming designing and building simplex or editing this series? :D
Can't wait to see space, astroboy👨🚀🚀