Author Topic: Copenhagen Suborbitals Updates and Testing  (Read 213017 times)

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #480 on: 04/01/2020 02:13 pm »
https://twitter.com/copsub/status/1245313575381618688

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Due to low ethanol/H2O fuel combustion temps and production difficulties we're facing with a conical, regen cooled nozzle in a BPM100 size engine, we're trying a different nozzle design. Is it the 1st Aerospike Propelled Rocket Intended to Launch by a crowdfunded organization?

Offline whitelancer64

Re: Copenhagen Suborbitals Updates and Testing
« Reply #481 on: 04/01/2020 02:30 pm »
That's an excellent April 1st post :D
"One bit of advice: it is important to view knowledge as sort of a semantic tree -- make sure you understand the fundamental principles, ie the trunk and big branches, before you get into the leaves/details or there is nothing for them to hang on to." - Elon Musk
"There are lies, damned lies, and launch schedules." - Larry J

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #482 on: 04/05/2020 01:34 pm »
https://twitter.com/copsub/status/1246778379669471234

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Making the first drogue prototype for the booster is tedious work.
tests will confirm details, but It will take 3 drogue parachutes of about 3m^2 to bring the booster to a speed where the main parachutes can be deployed.

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #483 on: 04/05/2020 07:02 pm »

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #484 on: 04/10/2020 04:41 pm »
https://twitter.com/copsub/status/1248644981851635714

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If you've ever spun on an office chair, even slowly, for a longer period of time, you likely know it gets uncomfortable quite fast. This can happen in multiple axes during asymmetrical capsule separation. Our Reaction Control System will stop our astronaut getting dizzy in space.

Offline Steven Pietrobon

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #485 on: 04/11/2020 12:49 am »
You can learn to not get sick spinning, but it takes a few ice dancing lessons. :-)

Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #486 on: 04/12/2020 05:01 pm »
twitter.com/copsub/status/1248308714236493832

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Crewed, crowdfunded rocketry is a hot topic these days.
Here are some of the items that have come a little too close to the heat during testing. 🔥🔥🔥
Do you know why we used a hair dryer?

https://twitter.com/copsub/status/1249381512400769028

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Those, whose answers were around LOX valves were correct! ;) We really wanted to make sure that valve operates when it should, but on a budget:
« Last Edit: 04/12/2020 05:02 pm by FutureSpaceTourist »

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #487 on: 04/13/2020 06:19 pm »


https://twitter.com/copsub/status/1249763196291989505

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New Video! We talk more about our 3D printed fuel injectors for our monster BPM100 engine and compare their mass flow to their machined counterparts. Enjoy! 🚀
And thanks @DJSnM for letting us use one of your graphics!

bit.ly/3cjo1eP
« Last Edit: 04/13/2020 06:22 pm by FutureSpaceTourist »

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #488 on: 04/15/2020 06:30 pm »
https://twitter.com/copsub/status/1250469251393224705

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B-roll of our latest video (bit.ly/3cjo1eP ) included a BPM-5 engine that tested different fuel mixtures - 75% ethanol to 92.5% (w/ & w/o 1% TEOS). Here's the exhaust color of the different mixes. Should Spica fly Red or Blue?🚀
Old TEOS blog: https://copenhagensuborbitals.com/a-few-μm-of-sio2-please/

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #489 on: 04/19/2020 04:05 pm »

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #490 on: 04/20/2020 06:21 pm »
https://twitter.com/copsub/status/1252298527125929986

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It's not until the suspension lines are added that it starts looking like a parachute. This is the 1st drogue prototype for our Spica booster.
Our plan is landing the booster gently for re-use, saving time & crowdfunder money. Video on how it's finished: bit.ly/3blYEt2

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #491 on: 04/23/2020 02:44 pm »
https://twitter.com/copsub/status/1253333326514892802

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With the rocketshop being only open to single individuals at a given time during the pandemic, one of the things we manged to finish during the period is welding bulkhead tubing for Spica propellant tanks. Once the quarantine is over we should be able to weld them onto the tanks!

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #492 on: 04/25/2020 05:34 pm »
https://twitter.com/copsub/status/1254094864758845442

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The Spica booster drogue prototype is finished, and has been packed for its first simple drop test.
We can't wait to see it out in the fresh air! 🌞

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #493 on: 04/26/2020 03:22 pm »

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #494 on: 05/03/2020 03:24 pm »

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #495 on: 05/09/2020 08:00 pm »
https://twitter.com/copsub/status/1259125000629637121

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Half way through cutting all the ribbons for a ribbon hemisflo drogue parachute prototype. Each set has to be cut at different lengths and angles on the ends to give the drogue the right shape.
27 ribbons on 12 gores = a very tired CS-member...

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #496 on: 05/10/2020 07:34 pm »
https://twitter.com/copsub/status/1259561653131268099

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Last Sunday John trimmed a few details on the anti-vortex baffles and welded them onto the two end-caps, which are going to make up the bottom of Spica's propellant tanks. This is a crucial element preventing pressurization gas ingestion into engine feed lines close to MECO. 🚀

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #497 on: 05/11/2020 06:23 pm »
https://twitter.com/copsub/status/1259903374356512768

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We finally got a chance to test the Supersonic X drogue design this weekend. Or, the onion, as we now call it.
This is a candidate for bringing down the speed of the booster before opening the main parachutes, so that we can make the booster reusable.
Human skydive is next 🤗

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #498 on: 05/12/2020 03:47 pm »


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In this video we talk about hemisflo and conical ribbon parachute designs and their challenges for our upcoming Spica rocket booster recovery. We want Spica to be a reusable rocket to increase our flight frequency and reduce production costs. If you find parachutes and rockets interesting, you can also visit Delft Aerospace Rocket Engineering who are always helpful when we need parachute testing: https://dare.tudelft.nl/

Offline FutureSpaceTourist

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Re: Copenhagen Suborbitals Updates and Testing
« Reply #499 on: 05/14/2020 06:40 pm »
https://twitter.com/copsub/status/1261000938241896450

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As another candidate for helping to reuse the Spica booster, 324 individual ribbons have been sewn onto their center ribbon for this first hemisflo ribbon drogue parachute prototype. The center ribbon is 108 cm. Our recent video on the hemisflo design:
bit.ly/2Z9E2Rz

Tags: amateur  suborbital 
 

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