Author Topic: Orbex  (Read 12716 times)

Offline ringsider

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Online Kryten

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Re: Orbex
« Reply #41 on: 01/28/2019 01:46 pm »
https://www.pressandjournal.co.uk/fp/news/moray/1663847/rocket-manufacturing-soon-to-take-off-in-moray/?utm_source=twitter
Quote
Private spaceflight company Orbex has bought a vacant building on Forres Enterprise Park and started a recruitment drive for highly specialised engineers.
[...]
The Forres facility, which will be Orbex’s headquarters, is due to be officially opened next month at an event attended by Graham Turnock, head of the UK Space Agency.
Presumably this is the 7th February event they've be teasing on Twitter

Offline ringsider

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Re: Orbex
« Reply #42 on: 01/29/2019 06:58 am »
https://www.pressandjournal.co.uk/fp/news/moray/1663847/rocket-manufacturing-soon-to-take-off-in-moray/?utm_source=twitter
Quote
Private spaceflight company Orbex has bought a vacant building on Forres Enterprise Park and started a recruitment drive for highly specialised engineers.
[...]
The Forres facility, which will be Orbex’s headquarters, is due to be officially opened next month at an event attended by Graham Turnock, head of the UK Space Agency.
Presumably this is the 7th February event they've be teasing on Twitter
It's interesting how these guys just stay mostly silent but apparently still make progress - in this story purchasing a factory etc. - but even in this news piece  the management declined to comment. It's the complete opposite of most others out there. They really keep fairly silent on tech developments, which is either suspicious or clever - not yet sure which.

Also they are quite good at trolling - on Twitter they recently posted pictures of a sofa and new carpets, where others post engines or whatever. It's a different approach for sure.
« Last Edit: 01/29/2019 06:59 am by ringsider »

Offline gongora

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Re: Orbex
« Reply #43 on: 01/29/2019 12:46 pm »
It's interesting how these guys just stay mostly silent but apparently still make progress - in this story purchasing a factory etc. - but even in this news piece  the management declined to comment. It's the complete opposite of most others out there. They really keep fairly silent on tech developments, which is either suspicious or clever - not yet sure which.

There are a bunch of companies acting like this (in both launcher and satellite development), we just tend to focus on the ones that are being vocal.
« Last Edit: 01/29/2019 12:46 pm by gongora »

Online Stevenzop

Re: Orbex
« Reply #44 on: 01/29/2019 02:58 pm »
https://www.pressandjournal.co.uk/fp/news/moray/1663847/rocket-manufacturing-soon-to-take-off-in-moray/?utm_source=twitter
Quote
Private spaceflight company Orbex has bought a vacant building on Forres Enterprise Park and started a recruitment drive for highly specialised engineers.
[...]
The Forres facility, which will be Orbex’s headquarters, is due to be officially opened next month at an event attended by Graham Turnock, head of the UK Space Agency.
Presumably this is the 7th February event they've be teasing on Twitter

Interesting... Forres is just up the road from me. Never thought I'd see the day a rocket factory would pop up in north east Scotland! I wonder if they need anyone to make cups of tea and sweep the floor...

Offline ringsider

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Re: Orbex
« Reply #45 on: 01/29/2019 04:55 pm »
It's interesting how these guys just stay mostly silent but apparently still make progress - in this story purchasing a factory etc. - but even in this news piece  the management declined to comment. It's the complete opposite of most others out there. They really keep fairly silent on tech developments, which is either suspicious or clever - not yet sure which.

There are a bunch of companies acting like this (in both launcher and satellite development), we just tend to focus on the ones that are being vocal.
Astra, maybe ABL.... Who else?
« Last Edit: 01/29/2019 04:56 pm by ringsider »

Offline Chris Bergin

Re: Orbex
« Reply #46 on: 02/07/2019 05:24 pm »
Awesome news:

ARTICLE: Orbex reveals Prime’s second stage as it prepares for UK domestic launches -

https://www.nasaspaceflight.com/2019/02/orbex-primes-second-stage-uk-launches/

https://twitter.com/NASASpaceflight/status/1093575933980798976

Offline Nomic

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Re: Orbex
« Reply #47 on: 02/07/2019 07:42 pm »
As per presentation from December, 2nd stage is pressure fed.

Nozzle extension to 3d printed chamber looks welded.

https://mobile.twitter.com/Astro_Jonny/status/1093559574697779200

Offline HMXHMX

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Re: Orbex
« Reply #48 on: 02/10/2019 09:41 pm »
As per presentation from December, 2nd stage is pressure fed.

Nozzle extension to 3d printed chamber looks welded.

https://mobile.twitter.com/Astro_Jonny/status/1093559574697779200

One of the most impressive things about this is that the TVC actuators are holding up the engine on one side and the rest of the stage on the other. These guys have been busy doing real work.

Those are (seemingly commercial) electric ball-screw actuators (small second stages have low-rate TVC requirements, generally) and I doubt that stage masses even 1000 lbs.  So not that hard to do.

Offline Tywin

Re: Orbex
« Reply #49 on: 02/13/2019 03:52 am »
Orbex, sign a contract with SSTL for launch a demonstrators, satellite in 2021:


Quote
Orbex has also confirmed that it will launch an upcoming satellite in SSTL’s line of demonstrators by 2023. “We are extremely excited about the development of a sovereign UK satellite launch capability,” commented Sarah Parker, Managing Director of SSTL. “This is something SSTL has been advocating for many years, and it will benefit the entire UK space industry. We have been impressed with the rapid progress Orbex has made in a short time, and we look forward to working with them towards the first launch in 2021 and beyond.”

https://spacewatch.global/2019/02/british-new-space-orbex-space-to-launch-sstl-payload-from-scotland-in-2021/
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Offline Gliderflyer

Re: Orbex
« Reply #50 on: 02/13/2019 04:32 am »
Their engine has an interesting igniter setup. Looking at this image, there are some solenoid valves that tap off of the LOX and fuel main valves and feed into what looks like a torch igniter (or two, based on the tees in the lines). There is an apparent lack of a spark plug and they claim no "electrics" in the igniter, so I'm still guessing it is an acoustic igniter. There are also some interesting bumps on the side of the igniter body; they must have some very interesting internals in that part.
I tried it at home

Online Cheapchips

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Re: Orbex
« Reply #51 on: 02/15/2019 03:51 pm »
I read "coaxial" as a sort of tank-in-tank design with, say, a 1x-metre propane tank enclosed by a 1.5x metre LOX tank. I think that would explain why they need a fuel that won't freeze at LOX temps.

If only the outer LOX tank needed to bear structural loads and the inner propane tank just needed nothing more than to physically separate that fuel from the LOX with no thought to insulation, might that account for the 30% mass savings?

If the inner tank was even inflatable like a bladder or balloon within the LOX, might a single pressurization system suffice for both propellants?

I'm probably way out in left field, but it would certainly be "different". ;-)

The interplanetary podcast had an interview with Orbex CEO Chris Larmour this week.  Interesting stuff in there.

https://www.interplanetary.org.uk/single-post/2019/02/15/120-Orbex-Special

He talked a bit about the coaxial tank. The LOX is acting as a cooling jacket for the propane tank.  They don't need a separate cooling system. The propane is densified, so end up 2% more
'powerful' in Lamours words. 

As well as structural weight, the coaxial tank is saving on plumbing weight, since it sits on the base of the LOX tank.

The turbopump runs at a relatively low temperature, so they can use automotive grade metal in their 3d printing.

They are also looking at some sort of engine recovery.
They won't use parachutes so not sure what they're planning.


Offline PM3

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Re: Orbex
« Reply #52 on: 02/17/2019 01:19 pm »
This is how it began:

- Copenhagen Suborbitals by Danish Peter Madsen and Kristian von Bengtson

- Project 'Moonspike' by Chris Larmour and Kristian von Bengtson. They planned a crowdfunded two-stage alcohol-fueled rocket that should crash a capsule into the Moon. (Crowdfunding failed.)

Chris Larmour now is Orbex CEO, von Bengtson is CTO. Prime engines still developed and tested in Denmark.

=> New German WP article: Prime (Rakete)


Btw, there is some confusion where the engines are manufactured. Some sources say Denmark, others Germany or both countries. It's true that the 3D Printer - an SLM-800 - is made in Germany, but I can hardly beleive that SLM also makes the engine parts. Sounds like a confusion of printer and engine manufacturers. Does someone know it for sure?
« Last Edit: 02/17/2019 06:48 pm by PM3 »

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