3D Printed NASA Thrust Chamber Assembly Combines Two Metal Processes

3D Printed NASA Thrust Chamber Assembly Combines Two Metal Processes | The Cool Parts Show Ep. 71

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@hippotek1 4 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 🙂

@DavidCzuba 3 ай бұрын

The Cool Parts Show is my new favorite! You both are a dynamic duo!

@garrettolson7241 4 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.

@russellcollins5692 4 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 😮😊

@gsaucham 4 ай бұрын

Amazing job, congratulations !

@dustincrouse2498 4 ай бұрын

For those interested in this topic, Paul Gradl also has a great book summarizing additive manufacturing for space applications

@SteveWindsurf 4 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.

@aligenc659 4 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.

@johntheux9238 4 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?

@AdditiveManufacturing 3 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."

@johntheux9238 4 ай бұрын

So you use hot isostatic pressing, does this allow you to use faster, cheaper printers with higher porosity?

@AdditiveManufacturing 3 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.

@DylanEdmiston 4 ай бұрын

Cool.

@johntheux9238 4 ай бұрын

I want to know more about the specs for the engine, is it similar to BE-4 from Blue Origin?

@AdditiveManufacturing 3 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."