Pay with bank transfer

In order to donate via bank transfer, we will send our bank account details to your email. Please enter your email address here:

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.


NEXØ-II was originally planned to be very similar to NEXØ-I. But as the year progressed more and more departments saw an opportunity to perform a full development iteration in order to bring their devices one step closer to being ready for SPICA.

This added to the development time and increased the test workload significantly.

Late delivery

This year we had an unusually large number of our members deliver their workpackages way later than scheduled.

This had severe impact on the schedule, since in several cases it held up other members and  groups from starting parts of their work. This again made the dates for integrationtests slip to an alarming degree.

A lot of creativity was displayed in trying to redo the testplans to test as much as could be tested without the parts still in development.

At the time of writing we still have not seen a succesfull Harbour Acceptance Test. The one we did conduct could not be completed due to several systems not being ready for test or failing during the test.

This sad fact, combined with the expected Autum weather and a NoGo from an essential collaborator for the 23-24. of September, led us to decide to postpone the launch of the NEXØ-II rocket until 2018.

External factors

This year we had an unusually large workload handling external disturbances in July and August.

Had we only faced one of them, especially the first two, we would have been able to cope with it. But having all three on top of each other at the most busy time of the rocket season was too much for us, as it forced us to divert too many people away from testconducting and planning to instead deal with these external factors.

Firstly the danish authorities demanded a set of analysis based reports to be delivered before liftoff. This had not be a problem at all had they made the demand well in advance, but the demand came in early July when we were very busy. We had to take several of our most analytically minded people off the tasks of testplanning and systems integration to perform analysis and write the reports. Their capabilities and workeffort were sorely missed while they worked on the reports.

Secondly the danish press held a field-day over a bogus “double booking” of the launch area. It caused quite a stir in danish media and caused a bit of friction with the government agencies that we rely on for launching our rockets. Therefore we had to take people off the rocket work to instead conduct diplomacy with the government agencies and try to calm down the press. In the end it fizzled out, as the company that claimed to need the launcharea on the same days as us, turned out not to want to use it after all, when some days did became free for them to use. This was the same company that own and operate the submarine.

Thirdly the sad submarine criminal case. The entire world is apparently following the bizarre and sad submarine case. It does not involve us. Both the submarine and the person who did whatever it is that happened on that sad day onboard, left us in 2014. So to us, both he and the submarine is ancient history.

But a lot of the worlds press did not bother with details like that and happily reported that the submarine and the person was still a part of our organisation. We spent a lot of time monitoring the press from all over the world and demanding they change their stories to remove any reference to us. We fought to have foto and video material from our organisation removed from stories in the press all over the world.

A lot of presspeople came to our workshop, called us and wrote to us. Our workshop was practically under siege from the worlds press for several weeks. All we could tell them was that the submarine and the person left us is 2014, and to go talk to the company that is the present owner of the submarine.

The submarine-case itself caused a lot of grief amongst our members. Despite the submarine and the person having left our organisation years ago, a lot of us still remember both quite vividly, so reading up on the gory details in the press and coming to terms with all that being committed by someone we used to know and work with, caused a tremendous amount of grief  amongst our members.

Make a donation

Help us continue building rockets with a one time donation

Categories: Blog

Published by Kristian Elof Sørensen on


Tamas Fabian · 19th September 2017 at 12:02 pm

Thank you for the detailed information. The situation is very much understandable. It’s rocket science after all (and sometimes it’s a lot more). 🙂

I wish you better luck next year, and I hope I can help a little in the future with a few small donations.

F4GRX · 19th September 2017 at 8:12 pm

I wish you the best of luck for all of this issues. Soon you will be able to get through it and continue to work on your cherished project instead of being distracted by secondary problems.

You are making all of us dream about space and that is all that counts. Be strong.

Román Mykytyuk · 19th September 2017 at 8:16 pm

Good luke for the nex year well resred lunch, sure will see a lot of test burns. And perjaps a doble lunch the next year?

Sandrix RavenLight · 20th September 2017 at 11:42 am

Good luck guys!
Make dreams happen!

np. vd Spek · 23rd September 2017 at 3:38 pm

Reading your third issue, Now, that other statment blog post make more sense. I think i lived under a rock here in the netherlands.

I wis you goodluck for next try, next year. And hopeful you can improve the ship a bit more and hope to see more youtube videos soon again. I loved watching them.

Marsian · 8th October 2017 at 12:57 am

This is literally rocket science. No free lunches, but just hard work.

Comments are closed.

Related Posts


Nexø II debriefing part 3: Flight Dynamics and data analysis

Some weeks ago we hosted a public debriefing event in Copenhagen. In this third video Flight Director talks about the Nexø II flight profile and lessons learned from the flight.


Nexø II debriefing part 2: Onboard cameras & the video transmitter

A few weeks ago we hosted a public debriefing event in Copenhagen. In this second video Alex Csete, OZ9AEC talks about the Nexø II onboard cameras and video transmitter built from COTS components.


Nexø II debriefing part 1: Network and telemetry system

A few weeks ago we hosted a public debriefing event in Copenhagen. In this first video our Telemetry experts Peter Scott and Bianca Diana talks about the telemetry and streaming systems used in the Nexø Read more…