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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.


The boards responsible for battery charging and on/off logic. Photo: Bo Brændstrup.



The rocket mock-up with the wire harness being laid up. Photo: Bo Brændstrup.



High-pressure tank and its valves built into a 300 mm Nexø-class airframe. Graphics: Thomas Madsen.



Battery unit schematic: internal regulator, output switches and communication circuit. Illustration: Peter Scott.