The Cool Parts Show is my new favorite! You both are a dynamic duo!
@hippotek15 ай бұрын
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 🙂
@garrettolson72415 ай бұрын
Love your channel: my favorite KZbin 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.
@gsaucham5 ай бұрын
Amazing job, congratulations !
@SteveWindsurf5 ай бұрын
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.
@russellcollins56925 ай бұрын
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 😮😊
@dustincrouse24985 ай бұрын
For those interested in this topic, Paul Gradl also has a great book summarizing additive manufacturing for space applications
@aligenc6595 ай бұрын
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.
@johntheux92385 ай бұрын
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?
@AdditiveManufacturing4 ай бұрын
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."
@johntheux92385 ай бұрын
So you use hot isostatic pressing, does this allow you to use faster, cheaper printers with higher porosity?
@AdditiveManufacturing4 ай бұрын
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.
@johntheux92385 ай бұрын
I want to know more about the specs for the engine, is it similar to BE-4 from Blue Origin?
@AdditiveManufacturing4 ай бұрын
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."
@DylanEdmiston5 ай бұрын
Cool.
@GoodBaleadaMusic5 ай бұрын
thoughjt it was for coffee lol
@AdditiveManufacturing5 ай бұрын
It'll definitely get you going in the morning.
@Joshua_Bell_5 ай бұрын
Rockets push off air. They wouldn't "thrust" in the emptiness of "space".