Uploaded July 2021 | Updated September 2026, 2 weeks ago

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Our rockets are 100% crowdfunded. Visit copsub.com/support-us to become one of our supporters!
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Copenhagen Suborbitals is the world's only crewed, crowdfunded space program. In the future, a volunteer astronaut will fly to space on our home-built rocket. We do this in our spare time, all the donations go to paying our workshop rent and buying materials. We are forever thankful to each of our supporters!

In this video we pressure test our 3mm thick 304L stainless steel rocket propellant tanks for liquid oxygen (LOX) and ethanol to above their flight pressures to validate the tanks for flight as well as our automated TIG welding machine performance. In the process, we aim to deformation harden the 304L stainless steel to increase the volume of the tanks and their strength.

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Intro and outro music by Everyday Astronaut:
(https://www.everydayastronaut.com)

Timestamps:
00:00 - Intro
00:43 - The making of the Spica rocket propellant tanks
03:06 - Pressure test procedure
05:10 - What's the point in deforming the tanks?
05:50 - The first +30bar pressure test!
06:34 - Results!
08:41 - We accidentally cheated...
09:26 - Next steps in the Spica rocket production
11:37 - Outro