Copenhagen Suborbitals

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Danmark
Copenhagen
Copenhagen Suborbitals

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We're the world's only crewed, amateur space program. Some day, one of us will fly into space on our homebuilt rocket. Please donate at: www.copsub.com

Copenhagen Suborbitals is the worlds only amateur, DIY, manned space program, out of Copenhagen, Denmark. Our mission is to launch a human being into space. We have so far launched 5 rockets from a barge in the Baltic Sea. All completely crowdfunded without any government backing. The mission has a 100% peacefull purpose and is not in any way involved in carrying explosive, nuclear, biological and chemical payloads. We intend to share all our techninal information as much as possible, within the laws of EU-export control. You can read more on our website: www.copsub.com

04/11/2026

There’s a moment on every tour:

Someone sits in the capsule, and the workshop goes quiet.
Then you hear: “wow!”

Sitting there makes space feel real.
It’s not a replica.
Real welds. Real scratches.

Space becomes real when it gets personal.
Book now: https://bit.ly/3kLX7SK

03/11/2026

Here's one of the questions in our survey: When you tell someone about Copenhagen Suborbitals, what do you say?

We're curious, because we have plenty of data on our engines and parachutes and very little on the people following along. The survey takes about six minutes, it's anonymous, and everyone who answers can enter a draw for a Remove Before Flight key ring and a key hanger.

https://bit.ly/3WdySDn

01/11/2026

Place your guess: Our entire annual budget, measured against what NASA's workforce spends on coffee in a year.

The options are about 10%, about 5% or less than 1%.

You may have heard us present a number in the past, but that was from an older calculation. This one is redone from NASA's current headcount, how much coffee Americans drink on a working day and 2026 coffee prices, and our income has unfortunately fallen since.

Put your letter in the comments and we will post the answer in a few days.

It is a back-of-the-envelope estimate built from published figures with every assumption written down, which is roughly how every concept sheet in this building starts.

60+ volunteers. Zero employees. Quite a lot of coffee.

The people who fund this work are our Mission Supporters, and you can be one of them: https://bit.ly/4ifK7nB

31/10/2026

Every program trades time against money. We are unusual in that we mostly only have time.

Volunteer hours are the reason a crewed space program can exist without a national budget behind it.

But hours cannot buy a titanium billet, a certified valve or a berth on a vessel.

That gap is what our Mission Supporters close, and it is closed by people giving 15 EUR a month.

A volunteer programme converts time into progress at a fixed rate, so schedule pressure has to be answered with scope reduction rather than overtime.

You cannot donate evenings to a supplier. You can donate to us.

The people who fund this work are our Mission Supporters, and you can be one of them: https://bit.ly/4A2Z7em

28/10/2026

Want to support the development of our crewed Spica rocket and crowdfunded space program while wearing some cool space merch? 🚀 Visit our store here: www.zazzle.co.uk/copsub

23/10/2026

Most crewed rockets carry a system to pull the crew clear if something goes wrong, and right now we plan to fly without one.

The reason is that we fear it would bring us bigger problems than it solves.

An abort system is a second chain of hardware with its own power, logic and failure modes, and it has to work perfectly in the one moment nothing else has.

It also has to stay quiet for the rest of the flight, because one that fires by mistake is a new way to lose it.

A safety system is only a gain if it removes more risk than it adds.

That is where we stand today, and we would rather say so openly.

The people who fund this work are called Mission Crew, and you can be one of them: https://bit.ly/4rwgbGC

21/10/2026

No polished showrooms here—just raw grit and liquid oxygen tanks. 🛠️🚀

Ever wonder what it takes to build a rocket on a volunteer budget? Come see the real work happening on our engine test structures. It's raw, it's authentic, and it's 100% crowdfunded.

Book your spot: https://bit.ly/3kLX7SK

20/10/2026

We measure almost everything we build, and we know almost nothing about you.

Every engine test, parachute drop and capsule splashdown leaves us with pressure curves, descent rates and g-loads, but when it comes to the people who follow us and fund the hardware, our dataset is embarrassingly thin. So we've built a short survey about who you are, what got you interested and where you'd actually like to hear from us. It takes about six minutes, it's anonymous, and you can skip anything you like.

Whether you're Mission Crew or just following along, everyone who answers can enter a draw for a Remove Before Flight key ring and a key hanger.

Take the survey here: https://bit.ly/3WdySDn

19/10/2026

We publish almost everything we do. Almost is doing real work in that sentence.

Open development is the reason this program exists, and it is the reason people trust it.

Some propulsion and guidance detail sits under export control, and that material stays in the room, permanently.

Export control means some detail stays internal. We would rather say that plainly than publish something vague and pretend it is openness.

Open by default. Closed where the law says so.

The people who fund this work are called Mission Crew, and you can be one of them:
https://bit.ly/3Vywh6J

$Hardware can take 15 g. A person can take a fraction of that, and only lying down, facing the right way.Acceleration thr...$

18/10/2026

Hardware can take 15 g. A person can take a fraction of that, and only lying down, facing the right way.

Acceleration through the chest is survivable at levels that would grey you out instantly if you were sitting upright.

So the seat angle, the couch geometry and the astronaut orientation are propulsion decisions as much as they are comfort decisions.

The shape of the whole trajectory gets negotiated against what a human body will accept.

Acceleration limits set seat geometry, and seat geometry sets internal volume. This is one of the constraints that decides capsule diameter.

The flight profile is designed around a person, not the other way around.

The people who fund this work are called Mission Crew, and you can be one of them:
https://bit.ly/3VxdPvc

Adresse

Refshalevej 183A
Copenhagen
1432

Telefon

+4531403063

Website

http://copenhagensuborbitals.com/support-us/

Underretninger

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