Uploaded February 2025 | 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!
Compliment us by wearing our apparel: zazzle.com/store/copsub
Book a visit to our rocket factory in Copenhagen: airbnb.com/copsub

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!

Twitter : twitter.com/CopSub
Facebook : facebook.com/CopenhagenSuborbitals
Instagram : instagram.com/copsub
LinkedIn : linkedin.com/company/copenhagen-suborbitals
Pinterest : pinterest.com/copsub

Music by Everyday Astronaut:
(https://www.everydayastronaut.com)

TIMESTAMPS:
00:00 - The most simple liquid rocket engine
00:25 - Why our first engine might explode
01:16 - BPM-17 & BPM-2: Our pipe rocket engines
01:57 - How much efficiency does a rocket nozzle give?
02:16 - Why a pipe engine is almost impossible to blow up?
03:08 - What are other benefits of a pipe engine?
04:12 - Making of the pipe engine
04:38 - Time schedule for a hot fire test (Hopefully. Maybe.)
05:14 - Electronics for our rocket engine test stand (Integration hell?)
06:11 - Want to support this project?