Author Topic: ESA - Vega Updates  (Read 167997 times)

Offline SciNews

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Re: ESA - Vega Updates
« Reply #240 on: 08/10/2018 10:08 AM »
But can it reach Mach 10 in 5 seconds after launch? The Sprint ABM had 3.0 MN of thrust and only massed 3.4 tonnes, a liftoff TWR of 88.
The article was about satellite-launch market, not weapons.

Offline envy887

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Re: ESA - Vega Updates
« Reply #241 on: 08/10/2018 11:43 AM »
But can it reach Mach 10 in 5 seconds after launch? The Sprint ABM had 3.0 MN of thrust and only massed 3.4 tonnes, a liftoff TWR of 88.
The article was about satellite-launch market, not weapons.
It's an inaccurate clickbait headline. The fastest rocket in the world is the 3-stage Delta IV that is launching PSP tomorrow morning.

Offline edkyle99

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Re: ESA - Vega Updates
« Reply #242 on: 08/10/2018 02:38 PM »
Yes, except that by the time Delta 4H/Star 48 is going that fast, it is no longer "in the world", is it?!

In terms of flat out "zero to 60" acceleration for an orbital launch vehicle, what about Japan's SS-520?  18 tonnes of liftoff thrust for a 2.6 tonne launch vehicle, but no future plans to launch perhaps.

I think a valid comparison of this type might be time to orbital velocity - "zero to orbit".

 - Ed Kyle
« Last Edit: 08/10/2018 02:43 PM by edkyle99 »

Offline SciNews

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Re: ESA - Vega Updates
« Reply #243 on: 08/10/2018 03:00 PM »
It's an inaccurate clickbait headline. The fastest rocket in the world is the 3-stage Delta IV that is launching PSP tomorrow morning.
Just move past the title, it's an interesting article.
The Solar Probe will be the fastest, not the rocket launching it
In terms of flat out "zero to 60" acceleration for an orbital launch vehicle, what about Japan's SS-520?  18 tonnes of liftoff thrust for a 2.6 tonne launch vehicle, but no future plans to launch perhaps.
Unfortunately, the SS-520 launch didn't have visual indication of altitude
For an accurate comparison, it must be taken into account that at the same altitude the distance traveled may differ.


Offline SciNews

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Re: ESA - Vega Updates
« Reply #245 on: 09/18/2018 12:34 PM »
ESA: Preparing for Vega-C

Quote
At the end of 2019 Vega-C will be launched from Europe’s Spaceport in French Guiana increasing performance from Vega’s current 1.5 t to about 2.2 t in its reference 700 km polar orbit, with no increase in launch costs.
Vega-C's first stage is based on the P120, the largest single segment carbon fibre solid-propellant rocket motor ever built. It was successfully tested in July 2018. Its development relies on new technologies derived from Vega’s current first stage P80 motor. Two or four P120C motors will also be used for the liftoff boosters on Ariane 6.
Vega-C’s 3.3 m diameter fairing will accommodate larger payloads such as Earth observation satellites of more than two tonnes, and ESA’s Space Rider reentry vehicle.
The Vega launch pad and mobile gantry are being modified to accommodate Vega-C leading into a period when launch facilities will accommodate both vehicles.

Offline gosnold

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Re: ESA - Vega Updates
« Reply #246 on: 10/17/2018 07:32 PM »
Quote
Stéphane Israël @arianespaceceo

Launch contract signed with #OHBItalia for the National Advanced Optical System (NOAS), an earth observation mission at the benefice of  #Luxembourg’s 🇱🇺 Directorate of Defence. Liftoff in 2022 on a #Vega or #VegaC. #MissiontoSuccess 🚀

Offline bolun

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Re: ESA - Vega Updates
« Reply #247 on: 11/24/2018 08:28 AM »
https://www.esa.int/Our_Activities/Space_Transportation/Focus_on_Vega_developments

Focus on Vega developments

Quote
Details of Vega’s developments were presented at the 69th International Astronautical Congress on 1–5 October 2018, in Bremen, Germany (http://www.iafastro.org/). Download the presentation here (.pdf) and paper submitted to the IAC here (.pdf).

These Vega developments are the result of the vision set out at the ESA Council Meeting at Ministerial Level in 2014. In November 2019, the Ministerial Council will meet again to discuss Space19+ to direct Europe’s ‘next generation’ ambitions in space, and address the challenges facing not only the European space sector but also European society as a whole.
« Last Edit: 11/24/2018 09:34 AM by bolun »

Offline Rik ISS-fan

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Offline gongora

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Re: ESA - Vega Updates
« Reply #249 on: 11/26/2018 01:26 PM »
https://twitter.com/HolgerWentscher/status/1066987379335008256
Quote
Production line of VEGA classic at @RuagSpace Emmen with the last three fairing sets in final assembly. Making room for the first @Avio_Group @vega_sts VEGA C which is already in the oven. Note the old (classic) and the new (VEGA C) Horizontal Machining Jigs to the right.

Offline Asteroza

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Re: ESA - Vega Updates
« Reply #250 on: 11/26/2018 10:52 PM »
That bit about uprating AVUM+ into VENUS (first version being a hybrid mode service module with both liquid and electric propulsion, as a service module for Space Rider)(second version being what appears to be a pure SEP stage/tug) is pretty interesting. I wonder how generic VENUS in its second form is, as in can it fly on a different small rocket though. I suppose if you can pay, ESA can deliver?

Offline bulkmail

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Re: ESA - Vega Updates
« Reply #251 on: 12/02/2018 09:51 AM »
https://www.esa.int/Our_Activities/Space_Transportation/Focus_on_Vega_developments

Focus on Vega developments

Quote
Details of Vega’s developments were presented at the 69th International Astronautical Congress on 1–5 October 2018, in Bremen, Germany (http://www.iafastro.org/). Download the presentation here (.pdf) and paper submitted to the IAC here (.pdf).

These Vega developments are the result of the vision set out at the ESA Council Meeting at Ministerial Level in 2014. In November 2019, the Ministerial Council will meet again to discuss Space19+ to direct Europe’s ‘next generation’ ambitions in space, and address the challenges facing not only the European space sector but also European society as a whole.

Interesting is that Vega C updates also the AVUM last stage aiming to reduce non-ESA components.
- reduce, but not eliminate/replace all of them?
- haven't seen which specific parts will be replaced and which will remain foreign.
According to this: 2015 presentation, p11
-- Russian tank - replace with Airbus tank
-- US tank - replace with Airbus tank
-- Ukraine engine - replace with Airbus engine

Does anybody have more info on this Airbus engine?

Also, how does that domestication drive fit with the Vega E last stage engine, where some sources mention it'll be LOX/Methane co-developed with Russia?

What other (major) components remain in Vega C that are of non-ESA origin?

Otherwise, a nice progression AVUM+ -> small satellites dispenser -> reusable/returnable orbital plane -> space tug. Is SpaceRider/IXV scalable to human-rated size? Can some ATV-derived systems or structures be utilized for that?

Offline Alpha_Centauri

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Re: ESA - Vega Updates
« Reply #252 on: 12/02/2018 10:22 PM »
Those are old plans. While most parts are still being "europeanised", Vega-C's AVUM+ will retain the RD-869 engine.  As for Vega-E; Avio worked with Russia on the LM10 MIRA, a demonstrator engine, but the production engine (the M10) is being developed in western Europe.
« Last Edit: 12/03/2018 03:34 PM by Alpha_Centauri »

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