This is one of the BEST episodes you guys have ever presented. This part is truly a BLAST :-) I really enjoy the two of you as a team but I have to admit, what I enjoy most ist Stephanie's voice. It makes conveying knowledge so much more compelling, when the person presenting the information has a voice as pleasent as yours 🙂
Love your channel: my favorite UA-cam channel, and that's saying something. I'm a programmer that spends days clacking away while watching engineering videos, including your channel. Such incredible, educational content. Keep up the good work.
I would expect that there are parts off these processes that remain and are kept quite, one would hope in these times were living in. Off course we’ll never know till it’s not worth knowing 😮😊
From Paul Gradl at NASA: "We still require very high density (low porosity) from the AM builds. HIP should not be used as a crutch for poor quality material. HIP has been shown to improve fatigue life, which is one of the major drivers in our designs." Thanks for watching.
From Paul Gradl at NASA: "We machine and use post-processing where it is needed, such as critical interfaces. We use other processes such as surface enhancements if we need to modify the surface texture. We have developed the L-PBF and LP-DED processes to enable the small features/channels required for our designs. These processes use a laser as the energy source, denoted by the “L” for laser in the acronym."
From Paul Gradl at NASA: "The 40,000 lbf thrust ground test demonstrator shown in the video was to prove out all the new materials and technologies in a relevant hot-fire environment. This process development data and test data are then used to scale these technologies. The ~500,000 lbf thrust engine that Pete mentioned is the RS-25, where we are building some full scale AM parts with our industry partners."
I have some questions: 1) Is elongation of 3d printed metals higher than traditionally manufactured materials? 2) What are the differences between X/Y resolution, accuracy and precision. Some 3D printers don't show their precision, only their X/Y resolution and layer height.
This is one of the BEST episodes you guys have ever presented.
This part is truly a BLAST :-)
I really enjoy the two of you as a team but I have to admit, what I enjoy most ist Stephanie's voice.
It makes conveying knowledge so much more compelling, when the person presenting the information has a voice as pleasent as yours 🙂
The Cool Parts Show is my new favorite! You both are a dynamic duo!
Love your channel: my favorite UA-cam channel, and that's saying something. I'm a programmer that spends days clacking away while watching engineering videos, including your channel. Such incredible, educational content. Keep up the good work.
Amazing job, congratulations !
For those interested in this topic, Paul Gradl also has a great book summarizing additive manufacturing for space applications
I would expect that there are parts off these processes that remain and are kept quite, one would hope in these times were living in. Off course we’ll never know till it’s not worth knowing 😮😊
So you use hot isostatic pressing, does this allow you to use faster, cheaper printers with higher porosity?
From Paul Gradl at NASA: "We still require very high density (low porosity) from the AM builds. HIP should not be used as a crutch for poor quality material. HIP has been shown to improve fatigue life, which is one of the major drivers in our designs."
Thanks for watching.
Do you still need machining afterwards?
There is no moving part but the holes for film cooling might be too small for 3d printing. Do you use lasers?
From Paul Gradl at NASA: "We machine and use post-processing where it is needed, such as critical interfaces. We use other processes such as surface enhancements if we need to modify the surface texture. We have developed the L-PBF and LP-DED processes to enable the small features/channels required for our designs. These processes use a laser as the energy source, denoted by the “L” for laser in the acronym."
Great, NASA has joined the club and finally innovating 3D printed engine technology, and in house!. Now, please can we use them more than once.
I want to know more about the specs for the engine, is it similar to BE-4 from Blue Origin?
From Paul Gradl at NASA: "The 40,000 lbf thrust ground test demonstrator shown in the video was to prove out all the new materials and technologies in a relevant hot-fire environment. This process development data and test data are then used to scale these technologies. The ~500,000 lbf thrust engine that Pete mentioned is the RS-25, where we are building some full scale AM parts with our industry partners."
I have some questions:
1) Is elongation of 3d printed metals higher than traditionally manufactured materials?
2) What are the differences between X/Y resolution, accuracy and precision. Some 3D printers don't show their precision, only their X/Y resolution and layer height.
Cool.
thoughjt it was for coffee lol
It'll definitely get you going in the morning.
Rockets push off air.
They wouldn't "thrust" in the emptiness of "space".
Naaa man
Over 2k years ago Jesus was able to 3D print human ears on the fly. Even today there is evidence of this.