CS: Ballute Testing

I must say the CS parachute department seems to be on the ball, good to see so much work going into recovery!

Video Caption: In an attempt to mitigate the spin we saw with our last manned Ballute jump, we made and tested a small-scale design, which is sown from two sections – top and bottom, rather than single continuous gores. This, we hope, allows better alignment of air intake pockets, which we expect caused the spin on the previous design.

Copenhagen Suborbitals is the world’s only manned, amateur space program, 100% crowdfunded and nonprofit. In the future, a volunteer will fly to space on our home-built rocket.

If you like the video and what we do in general, please go to http://www.copsub.com/support-us and support our project. Donations start from as little as a coffee a month.

CS: Saturday In The Rocketshop 07/09

Video Caption: A quick look into the workshop happenings last weekend.

A quick update on how we modify our swirl injectors to test how larger propellant holes influence their output.

Copenhagen Suborbitals is the world’s only manned, amateur space program, 100% crowdfunded and nonprofit. In the future, a volunteer will fly to space on our home-built rocket.

If you like the video and what we do in general, please go to http://www.copsub.com/support-us and support our project.

Donations start from as little as a coffee a month.

Compliment us by wearing our apparel: https://www.zazzle.com/store/copsub

CS: Swirl Injector Testing

Copenhagen Suborbitals have been continuing their testing of swirl injectors (article here), planned for there BPM-100 rocket engine, the group plan to carry out small scale tests on their BPM-5 engine.

Swirl injectors are most commonly found in Russian rocket engines and more predominantly with a liquid/gas injection scheme (coaxial swirl) where the gaseous propellant is directed down through the centre and the liquid propellant injected tangentially along the element wall, producing a swirl. This fuel swirl produces a cone at the outlet where when the oxidiser is introduced it mixes in this cone thus giving good atomisation of the propellants.

Coaxial Swirl Injector Element

As being investigated by CS, a liquid-liquid coaxial swirl injector has been used in the past with storable propellants but also with liquid oxygen and kerosene as used in the RD-0110/0107 engine which has served as an upper stage in various launch vehicles over the years.

Shear Coaxial Injector Element

The coaxial swirl injector should not be confused with a shear coaxial injector (also called a coaxial hollow post) as found in the Space Shuttle Main Engine (SSME) or RS-25. This injector element is typically used with liquid oxygen and gaseous hydrogen  (phase change after absorbing heat from the cooling jacket). The gaseous hydrogen flows at much higher velocity compared to the liquid oxygen where the differential in this velocity creates a shear action, breaking the liquid oxygen into droplets, hence the name. This injector does not work well with both propellants being liquids as the pressure drop required to achieve the high velocity would become too great.

You can find more info on swirl injectors below or in any liquid rocket book,
Swirl Coaxial Injector Development
Swirl Effect on Coaxial Injector Optimisation
History of Liquid Propellant Rocket Engines in Russia
Combustion Characteristics of Bi-liquid Swirl Coaxial Injectors with Respect to a Recess

CS: DIY Parachutes Part II

Video Caption: This is a follow up video to our June 29th Spica space capsule ballute and parachute system tests. Here we talk about the data we got from those jumps. If you haven’t seen the first part of this video, you can watch it here: https://www.youtube.com/watch?v=4SQet…

Copenhagen Suborbitals is the world’s only manned, amateur space program, 100% crowdfunded and nonprofit. In the future, a volunteer will fly to space on our home-built rocket.

If you like the video and what we do in general, please go to http://www.copsub.com/support-us and support our project. Donations start from as little as a coffee a month. Compliment us by wearing our apparel: https://www.zazzle.com/store/copsub

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Music by Everyday Astronaut: https://www.everydayastronaut.com

CS: Coax Swirl Injector Tests

Video Caption: This weekend we had a go at soldering our first coaxial swirl injectors which we plan to use in our crewed Spica rocket.

Copenhagen Suborbitals is the world’s only manned, amateur space program, 100% crowdfunded and nonprofit. In the future, one of us will fly to space on a home built rocket.

If you like the video please go to http://www.copsub.com/support-us and support our project.

Twitter : https://twitter.com/CopSub
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Music by Everyday Astronaut: https://www.everydayastronaut.com

CS: Parachute Testing

Video Caption: On June 29th we paid a visit to our good friends in Odense Faldsk√¶rms Center – a Danish skydiving club. Our goal was to put one brave skydiver under our homemade Spica space capsule’s Ballute and reefed parachute to test their design and performance. We were both lucky with the weather and the tests, so the only thing left to do is sift through the gathered data and verify the performance of our Kevlar Ballute.

Copenhagen Suborbitals is the world’s only manned, amateur space program, 100% crowdfunded and nonprofit. In the future, one of us will fly to space on a home built rocket.

If you like the video please go to http://www.copsub.com/support-us and support our project.

Twitter : https://twitter.com/CopSub
Facebook : https://www.facebook.com/CopenhagenSu…
Instagram : https://www.instagram.com/copsub/
LinkedIn : https://www.linkedin.com/company/cope…
Pinterest : https://www.pinterest.com/copsub/

Copenhagen Suborbitals Trailer 2019

Video Caption: Copenhagen Suborbitals Trailer anno 2019. Copenhagen Suborbitals is the world’s only manned, amateur space program, 100% crowdfunded and nonprofit. In the future, one of us will fly to space on a home built rocket.

If you like the video please go to http://www.copsub.com and support our project. Your donations is our rocket fuel
Twitter : https://twitter.com/CopSub
Facebook : https://www.facebook.com/CopenhagenSu
Instagram : https://www.instagram.com/copsub/
LinkedIn : https://www.linkedin.com/company/cope
Pinterest : https://www.pinterest.com/copsub/