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Copenhagen Suborbitals Successfully Launches Active Guided Rocket

arcticstartup.com

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Re: Copenhagen Suborbitals Successfully Launches Active Guided Rocket

#31

Post by ballooney »

mixmax wrote: post #5
jontro wrote: post #2

Nice, though I wonder what is so notable with the ground track offset.

It shows that the active guidance works as expected. Active guidance is extremely difficult. The hardware is difficult because you need to design jetvanes that work under extreme pressure, and in a 3000 degree jet exhaust. The software is difficult because it needs to be extremely reliable while still compensating for a lot of factors such as wind, spin, air density, etc. and you can't test it, so there is no space f…

This is incorrect, there have been successfully flown, actively stabilised, passively unstable model rockets made by amateurs before. E.g. Gyroc in the UK.

michael.sdf-eu.org/Gyroc/

There have also been a few in the states. All passively unstable too.

Re: Copenhagen Suborbitals Successfully Launches Active Guided Rocket

#33

Post by omegant »

grecy wrote: post #32
workhere-io wrote: post #15

Short launch video: http://www.youtube.com/watch?v=rva9J_3njnI

Cool. Thanks. Does anyone know why the flames appear to "stutter" from the rocket in slow motion? Is that expected behavior?

It looks like turbulence or presure spikes on the chamber at ignition, depending the magnitude that could lead to a explosion (I just an aficionado, so take this opinion for what it´s worth) I also follow the sugar rocket to space project, and I think they had some problems with this, and with cracking in the propellant. Is the data from the launch available?.

Re: Copenhagen Suborbitals Successfully Launches Active Guided Rocket

#34

Post by angersock »

mixmax wrote: post #13
vanderZwan wrote: post #11

Earlier quoted context omitted.

Did you see the joke comparing your achievement to the resekort situation[1]? [1] https://www.facebook.com/photo.php?fbid=10151666565407048&se...

yes - it was hilarious! Rejsekortet is such an embarrasment to Denmark, my only constellation is that I once had sex with the CEO's daughter.

You cheeky bastard--to boldly go and all that, I assume?

Re: Copenhagen Suborbitals Successfully Launches Active Guided Rocket

#35

Post by angersock »

mixmax wrote: post #7

What this means is that the major obstacles for going into space have been cleared (reliable engine, logistics around sea launch, active guidance) so the next launch will be Heat2x, which has the potential to reach an altitude of 130 km. Space starts at 100 km. Disclaimer: I'm involved with Copenhagen Suborbitals, and managed the livestreaming of the event.

What are the chances that CS would be open to publicly offering their schematics and blueprints for the open-source community?

Re: Copenhagen Suborbitals Successfully Launches Active Guided Rocket

#36

Post by jlgreco »

Svip wrote: post #4

Would that make Denmark the fourth nation to independently achieve manned space flight, behind Russia/USSR, USA and China? Or is it disqualified for not being government run?

I'm not sure how doing manned suborbitals would stack up against Japan's JAXA which semi-regularly puts things into orbit: https://en.wikipedia.org/wiki/H-IIA#Launch_history

They don't have active plans for manned missions right now iirc, but I would venture to guess that if they wanted to, they could put someone up there without too much effort. The most immediately obvious hurdle is that they would need a human-rated pressurized reentry vehicle.

Re: Copenhagen Suborbitals Successfully Launches Active Guided Rocket

#37

Post by Someone »

angersock wrote: post #35
mixmax wrote: post #7

What this means is that the major obstacles for going into space have been cleared (reliable engine, logistics around sea launch, active guidance) so the next launch will be Heat2x, which has the potential to reach an altitude of 130 km. Space starts at 100 km. Disclaimer: I'm involved with Copenhagen Suborbitals, and managed the livestreaming of the event.

What are the chances that CS would be open to publicly offering their schematics and blueprints for the open-source community?

http://copenhagensuborbitals.com/resources_downloads.php has a CAD files. Are you looking for something specific that isn't there?

Re: Copenhagen Suborbitals Successfully Launches Active Guided Rocket

#38

Post by sorenbs »

danmaz74 wrote: post #30
mixmax wrote: post #25

Earlier quoted context omitted.

Their primary income is from the support organisation. It costs 100 Danish kroner a month (roughly $20) and there are around 700 members. So they live on roughly $14.000 a month, or $170.000 a year. Needless to say there is a lot of ingenuity in costcutting, a lot of parts from home-depot....

Wow, this is even more impressive than the results imho. Kudos to you!

Even though the small budget is very impressive, we wouldn't mind to have more members in the support group. Ahem... :-) http://www.copenhagensuborbitals.com/

Re: Copenhagen Suborbitals Successfully Launches Active Guided Rocket

#39

Post by angersock »

Someone wrote: post #37
angersock wrote: post #35

Earlier quoted context omitted.

What are the chances that CS would be open to publicly offering their schematics and blueprints for the open-source community?

http://copenhagensuborbitals.com/resources_downloads.php has a CAD files. Are you looking for something specific that isn't there?

I wasn't aware that the Arduino figured so prominently in their avionics!

Re: Copenhagen Suborbitals Successfully Launches Active Guided Rocket

#40

Post by runarb »

vanderZwan wrote: post #11
mixmax wrote: post #7

What this means is that the major obstacles for going into space have been cleared (reliable engine, logistics around sea launch, active guidance) so the next launch will be Heat2x, which has the potential to reach an altitude of 130 km. Space starts at 100 km. Disclaimer: I'm involved with Copenhagen Suborbitals, and managed the livestreaming of the event.

Did you see the joke comparing your achievement to the resekort situation[1]? [1] https://www.facebook.com/photo.php?fbid=10151666565407048&se...

Thus electronic ticket systems :) The local government her in Oslo, Norway are working on something similar[0]. It should have been finished in 2005.

Now after massive cost overruns they have scoped it down and will soon demolish part of the system (the ticket barriers at the railway station), but still keeping some of it. And of course they have now also started to talk about a new system, this time requiring everyone to have a smartphone with them ( what will happen if your battery runs flat?).

0: http://en.wikipedia.org/wiki/Reisekort

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