Pre-flight static test of the BPM-5 engine on May 5th 2018
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- Опубликовано: 12 сен 2024
- On May 5th we conducted several successful burns of the BPM-5 engine. The goal of the test was to qualify the engine controller software for flight on the Nexø II rocket, but we also managed to sneak in a few tests with TEOS as fuel additive.
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6:18 1st Burn - 75% ethanol
9:10 2nd Burn - 85% ethanol
21:38 3rd Burn - 92.5% ethanol
22:56 4th Burn - 91.5% ethanol + 1% TEOS
25:11 5th Burn - 74% ethanol + 1% TEOS
Blogs on test results:
Updated Engine Controller software performance: copenhagensubo...
Fuel mixture and TEOS result data: copenhagensubo...
6:18 1st Burn - 75% ethanol
9:10 2nd Burn - 85% ethanol
21:38 3rd Burn - 92.5% ethanol
22:56 4th Burn - 91.5% ethanol + 1% TEOS
25:11 5th Burn - 74% ethanol + 1% TEOS
Blogs on test results:
Updated Engine Controller software performance: copenhagensuborbitals.com/data-from-our-latest-bpm-5-rocket-engine-test/
Fuel mixture and TEOS result data: copenhagensuborbitals.com/a-few-%CE%BCm-of-sio2-please/
you're doing an amazing job in getting all these people interested in space flight! it's heart warming to see people smiling and exited over an engine test.
Thank you for the very detailed recording :)
Fantastic! Those mach diamonds are gorgeous!
I love you your videos! My grandparents worked for nasa/companies contractored for nasa and she use to tell me how excited she was when she sall the first static test of the apollo engines. I get to experience that in a different way because you guys are not a government you guys are strictly volunteer only. I love it and cant wait to see you guys succeed in your first goal.
glad i got to see it live
Insane plumes... Amazing engines!
Super les gars !!! Continuez !!!!!
love your work. and great interview, very informative! would love more update on the development of the engines.
What levels of thrust are you achieving with the modified propellant mixes, and the additives, please?
How does running the motor horizontally affect the results, in comparison to the intended vertical flight orientation?
How much design and fabrication has been carried out with the BPM-100 motor?
Thank-you. Thanks also for the excellent video. Copenhagen Suborbitals' teamwork is exemplary, and a credit to you all. :-)
You have a fuel leak at the weld where the fuel enters the nozzle end cooling jacket. It's visible leaking at 25:28
how did you notice it? it lasted less than a second
p.s. is a bit before 25:28
I've tested and flown liquid propellant based rockets similar to this one, just a little smaller. So I'm use to looking for issues when I watch test videos. I probably would have missed it if the camera was zoomed out a little more. You can plug the nozzle and put a few PSI of helium into the engine and find leaks. Hopefully the flight engine has been leak checked.
Why does the engine have a specific impulse of 170 in the graph released on the blog?
not surprising if you look at their welds in previous videos. There's no way those would pass a tech inspection for any pressure vehicle in the US. (I was trained to be a welder until my scoliosis took that option from me)
love the post burn cook off.
Very impressive on many levels.
Beautiful mach disks, even better than those of the Raptor engine... Fantastic job!
Guys, it's so cool! Keep it up.
They all did a nominal job.
Congratulations ;)
Amazing Roaring!!
Amazing Team work, good to see you all to work for space For everyone❤
I'm working with Rocket Nozzle, Can I get help from you guys?
Nice work on and for this video guys :D
It looks like the lower water content in the ethanol produces a red/ pink flame while purer ethanol creates a purple/ blue flame. Is there any reason for that?
Lower/higher combustion temperatures.
What is the chamber pressure of this engine?
You guys are cool
I knew it: when you add water to the fuel, basically the engine runs on vodka. Same reason the mix is on the rich side, a purely stoechiometric mix would melt the thruster when burning.
Yes, reminds me of the V2 rocket, they added water to the ethanol to reduce combustion temperature
So 5 tests, Copenhagen Suborbitals, are you going to begin preparing the Nexo 2 for launch after analyzing the data from each firing tests?
Daniel Burmas the rocket is ready. We’re currently getting the new mission control ship ready for the final tests/rehearsals before the actual launch
Muy bueno éxitos!!!
What's your timeline like when do you expect to launch the first people into space
what did you use for turbopump?
Thanks for the question!
Actually we didn't use a turbo pump. That might change in the future, but still early to say. They are either way too expensive for us, or quite difficult to manufacture ourselves. Nexø I was just pressure fed, but for Nexø II we used a dynamic pressure regulation system, which utilised one tank containing highly pressurised helium, which we could drive into the propellant tanks to top them off during the burn cycle, maintaining a steady pressure in the system throughout the flight. A video on that (DPR talk starts at 7:15): ruclips.net/video/EWHErw8Jn8I/видео.html
@@CopenhagenSuborbitals thank you.
correct me if i'm worng but the BPM5 engine can never reach space, right?
it would take around 150 seconds to reach Karman line (100km altitude), considering that this rocket consumes 2kg of LOX/s + ~2kg of fuel/s that would be 600kg just for oxidizer and fuel alone, thats above the 5000N.
What is TEOS? .
Tetraethyl orthosilicate
Looks good, but is the a business case for your rocket, compared to the Electron rocket? What are the advantage that CSO wants to utilize?
We don't have a business case since we're not a company. We're not doing this for a profit.
We are a group of amateurs trying to prove, that it's possible to send an ordinary person safely into space and back again, using nothing but ordinary materials and lots of ingenuity. We are 50 people building this in our spare time in the evenings and weekends
Copenhagen Suborbitals ok, good luck, then. I hope you achieve your goal 👍🏿
I have a little question, what is TEOS?
Some sort of chemical that coats the nozzle walls to insulate it from heat. Don’t know anymore than that sorry 😊
Is it a pressure fed cycle?
Yes, it's pressure fed.
Amazing engeeneering
It looks like your nozzle is under-expanded, but I could be wrong. Wouldn’t it be more efficient, essentially as the rocket rises, if you had a larger nozzle? Or will the injection pressure be changed to match the altitude?
Nice! Congratulations on the succesful tests.
Also, who is the girl that apears at @24:35 in the control post? Is it a patron of the project or maybe a guest?
She looks more preocupied about looking good for the video than doing any process control or similar.
Armilar Zifferblatt She obviously pressed the go button! I'm not sure if she's the new scientist who joined the project on a previous visitors day. There was some info in the audio of the full livestream.
Armilar Zifferblatt how do you look when you are concentrated before a technical rocket engine test?
Like this: (@0:23 in "OCO-2 & Delta II Ready for Launch" video, Bottom Left)
Or this: (@2:03 in "STS-133 Launch Team Liftoff Procedures" video, Left)
Or this: (@5:58 in "Launch Control Center (LCC) 2014 NASA Kennedy Space Center" video)
You obviously didn't concentrate when making links ;-)
The point we're making is, that she's a team member, part of the mission control team, so stop bugging her - please!
Good to know, thankyou.
Maybe a rookie comment but aren't those shock diamonds a sign of an over expanded nozzle?
No, they are a sign of a supersonic exhaust.
3:36 Seeing that is like getting stabbed 400 times for me. Don't use those kinds of wrenches. They will ruin your bolts.
what kind of wrenches would you use?
Дармоедов пруд пруди !!!
Кто спонсирует КосоШоу ?
Boring....
When dealing with rocket motor testing boring is good.