I've seen this same 3D printed engine on quite a few Chinese retail websites, albiet on a smaller scale than yours. Neat model, although I must say it is highly inaccurate, needs at least 5 more high compressor stages.
Yes, seems to be getting more popular over the years and folks remix and repost their own versions :) As for accuracy.. it was designed by another community member many years ago, and I've just made the modifications and design for the electronics to make it spin fast! Would be cool to have a bit of a more accurate model, but I think it's great for 'show and tell' with most of the main turbofan bits. Happy to discuss incorporating easy adjustments to the drive line or things that could be more realistic.
@@adambjohnson Yes, I agree, in it's current form it's good enough for show and tell as you mention and makes a great desk model! I believe this design is supposed to model the Rolls Royce Trent 900 which is pretty complex. In the real engine there are a total of 14 compressor stages and 7 turbine stages. It is a "3 spool" design in where one spool is the Fan driven by 5 turbines, an "intermediate stage" compressor (8 stages) driven by one turbine, and a "high stage" compressor (6 stages) driven by one turbine. Most of the power is produced by the fan hence it needing 5 turbine stages to spin it. I've been working on aircraft for over 30 years and I still love it LOL.
wow that’s awesome! The more detail the better :) I’d love to retrofit a bigger/more complex model in the future! Happy to hear people loving their work, I do to 😊
This model is NOT modeled after the Trent 900. The Chinese websites have essentially stolen this model and don’t understand its origins. I designed a nacelle to fit this model. (They stole that design too.) The nacelle was modeled after the Trent 900 because there were so many images of it available on the web. But the core engine itself never had anything to do with the Trent 900. This model is based upon high bypass jet engines in general. It has features common to all jets and was designed to represent a typical high bypass engine and be easy to 3D print. Again, it wasn’t modeled after any engine in particular. It certainly doesn’t resemble the Trent 900.
I'm trying to work out a more meaningful measurement of thrust, along with a bypass shroud to show the difference it can make. I was hoping to use a smoke analog but need the space and materials for that. I also wanted to use a scale and/or rolling cart to show some numbers. I'm open for ideas!
Good question! I’m making another video soon would should demonstrate some air flow with hanging strings. I don’t have any numbers or forces to give you though. It’s not producing enough thrust to rip it off the tables I guess 🙃
it’s unfortunately more of a demonstrator rather than a useful engine. The compression spools and stuff internally really do nothing other than spin - they would ideally be squirting fuel and igniting it inside to generate thrust. Further, 1/4 of the housing is missing, so any developed flow is just thrown out. I have printed front covers to guide the air in better and some ducting after to focus the air, but the thrust to weight ratio is still pitifully low to do anything real with. I also wonder if some idealized version of a 3D printed compressor would be useful 🤔
@@adambjohnson Absolutely EPIC! Anytime you'd like to do an upgrade version or for any other projects, keep us updated, would love to do something amazing together! (My contact info is available under this account, talk soon)
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Do you have a link for this build? Would love to try it
in the description
I've seen this same 3D printed engine on quite a few Chinese retail websites, albiet on a smaller scale than yours. Neat model, although I must say it is highly inaccurate, needs at least 5 more high compressor stages.
Yes, seems to be getting more popular over the years and folks remix and repost their own versions :)
As for accuracy.. it was designed by another community member many years ago, and I've just made the modifications and design for the electronics to make it spin fast! Would be cool to have a bit of a more accurate model, but I think it's great for 'show and tell' with most of the main turbofan bits. Happy to discuss incorporating easy adjustments to the drive line or things that could be more realistic.
@@adambjohnson Yes, I agree, in it's current form it's good enough for show and tell as you mention and makes a great desk model! I believe this design is supposed to model the Rolls Royce Trent 900 which is pretty complex. In the real engine there are a total of 14 compressor stages and 7 turbine stages. It is a "3 spool" design in where one spool is the Fan driven by 5 turbines, an "intermediate stage" compressor (8 stages) driven by one turbine, and a "high stage" compressor (6 stages) driven by one turbine. Most of the power is produced by the fan hence it needing 5 turbine stages to spin it. I've been working on aircraft for over 30 years and I still love it LOL.
wow that’s awesome! The more detail the better :) I’d love to retrofit a bigger/more complex model in the future! Happy to hear people loving their work, I do to 😊
This model is NOT modeled after the Trent 900. The Chinese websites have essentially stolen this model and don’t understand its origins. I designed a nacelle to fit this model. (They stole that design too.) The nacelle was modeled after the Trent 900 because there were so many images of it available on the web. But the core engine itself never had anything to do with the Trent 900. This model is based upon high bypass jet engines in general. It has features common to all jets and was designed to represent a typical high bypass engine and be easy to 3D print. Again, it wasn’t modeled after any engine in particular. It certainly doesn’t resemble the Trent 900.
@@rtwileyrc8030 Leave it to these Chinese websites to claim something that isn't true. Go figure.
Piece of paper for power view?
I'm trying to work out a more meaningful measurement of thrust, along with a bypass shroud to show the difference it can make. I was hoping to use a smoke analog but need the space and materials for that. I also wanted to use a scale and/or rolling cart to show some numbers.
I'm open for ideas!
how strong is it
Good question! I’m making another video soon would should demonstrate some air flow with hanging strings.
I don’t have any numbers or forces to give you though. It’s not producing enough thrust to rip it off the tables I guess 🙃
@@adambjohnson great i wonder how much it can lift if it tried to use for flying
it’s unfortunately more of a demonstrator rather than a useful engine. The compression spools and stuff internally really do nothing other than spin - they would ideally be squirting fuel and igniting it inside to generate thrust. Further, 1/4 of the housing is missing, so any developed flow is just thrown out.
I have printed front covers to guide the air in better and some ducting after to focus the air, but the thrust to weight ratio is still pitifully low to do anything real with.
I also wonder if some idealized version of a 3D printed compressor would be useful 🤔
Awesome cool! If any CNC machining or 3D printing custom parts may help? Would love to sponsor if you require. (PCBWay zoey)
It is completely 3D printed with some electronics inside. It would be a lot of fun to do a PCB but not necessarily needed at this point :)
@@adambjohnson Absolutely EPIC! Anytime you'd like to do an upgrade version or for any other projects, keep us updated, would love to do something amazing together! (My contact info is available under this account, talk soon)