Gas turbine engines are typically complex pieces of machinery, consisting of hundreds or thousands of parts that must be sourced and assembled. Technion Israel Institute of Technology, in collaboration with partners (including PTC, von Karman Institute for Fluid Dynamics and Izmir Katip Celebi University), undertook a project to see if a turbojet engine could instead be made from just two components, manufactured in one build through laser powder bed fusion (LPBF). The result is the engine seen in this episode, with a monolithic rotor and stationary shell both produced from Inconel 718 in a single build. While there are a few other elements required to make the engine functional, producing the bulk of its structure additively has potential benefits in terms of reducing engine cost, shortening supply chains, and even distributing or licensing production of similar gas turbine engines in the future. This pre-assembled turbojet engine was the 2023 winner for Best Proof-of-Concept Part in The Cool Parts Showcase.
This episode of The Cool Parts Show brought to you by Carpenter Additive. https://www.carpenteradditive.com/
FOR ALL ACCESS MEMBERS: One struggle of developing the engine was maintaining a gap between the rotating and stationary components to accommodate a hydrostatic bearing. Future work will involve other types of bearings. Sign up and watch this month's exclusive Extra here: https://www.additivemanufacturing.media/kc/cool-parts/articles/rethinking-bearings-for-pre-assembled-turbojet-engine-the-cool-parts-show-all-access?utm_source=youtube&utm_medium=turbojet
LEARN MORE ABOUT:
Our episode on the Production category winner for The Cool Parts Showcase in 2023 https://www.additivemanufacturing.media/kc/cool-parts/articles/variable-resistance-valve-trim-achieves-lead-time-reduction-through-am-the-cool-parts-show-69?utm_source=youtube&utm_medium=turbojet
Our 2021 Proof-of-Concept winner, now a production part https://www.additivemanufacturing.media/articles/3d-printed-heat-exchanger-uses-gyroids-for-better-cooling-the-cool-parts-show-43?utm_source=youtube&utm_medium=turbojet
More on EOS, which loaned us the part and makes the equipment used to produce this turbojet engine https://www.additivemanufacturing.media/suppliers/eos-north-america?utm_source=youtube&utm_medium=turbojet
#3dprinting #engineering #aerospace #manufacturing
How 3D printing could advance just one component of a gas turbine: blades https://www.additivemanufacturing.media/kc/cool-parts/articles/3d-printed-turbine-blades-for-more-efficient-power-generation-the-cool-parts-show-35?utm_source=youtube&utm_medium=turbojet
Another episode featuring a working motor embedded inside a fuel injector https://www.additivemanufacturing.media/kc/cool-parts/articles/the-cool-parts-show-episode-1-this-rocket-fuel-injector-is-a-solid-part-that-contains-a-working-motor?utm_source=youtube&utm_medium=turbojet
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00:00 3D Printed Turbo Jet Engine
00:55 Best Proof-of-Concept
01:17 One Build, One Material, Two Piece
01:46 How does a gas turbine engine work?
02:52 The advantages of a pre-assembled design
05:33 Assembly consolidation by design
06:33 Technion - Israel Institute of Technology
07:02 Resources used to produce the turbo jet engine
09:35 The challenge of the hydrostatic bearing gap
12:10 How much of the cost is due to assembly?
13:21 Benefits of an engine produced this way
13:56 Why is this "Cool"?
14:56 More on the Hydrostatic Bearing
15:34 Do you have a "Cool Part"?
15:49 Tailoring Powder Management for Qualification Requirements