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DEAR COPENHAGEN SUBORBITALS GUESTS, We'll get right to it: We need your help to run Copenhagen Suborbitals. This is a 100% non-profit project driven by sheer joy and hard work. We survive on donations averaging about $10, that we use to pay for raw materials, tools, our workshop, electricity and most importantly, rocket fuel. The entire CS team are unpaid volunteers, building rockets in our spare time. If this project brings you joy, please donate to keep it running. Thank you.

Reefing cutter device

This is the device that ensures a correctly timed opening of the parachutes. It is first activated when the parachute unfolds, and the suspension line pulls a plug in the bottom. after that, when the Read more…


The complete story of Nexø 1

In the summer of 2016, Copenhagen Suborbitals launched one of the most advanced liquid fueled rockets built by a team of volunteer amateurs. Follow the team close up during final preparations for the launch and Read more…


Public Nexø I debriefing event

On Sunday September 4th from 12 AM to 3 PM, a public debriefing will be held for all interested rocket enthusiasts. The debriefing will cover all results and experiences learned from the Nexø I launch Read more…


Data from Nexø I

Dear readers, It is now a couple of weeks ago that Nexø I ascended majestically above Sputnik. Flemming has already told a good deal about the flight in this blog. As can be seen, both Read more…


Nexø I flew and fell back again

Translation by Bo Brændstrup. Click! “Autosequence start, T-30 seconds.” The LED next to the mission box button marked autosequence start lights up to tell me that the launch control interface aboard Sputnik has received the Read more…