Author Topic: Partial Success : Ariane 62 VA262 maiden flight - 9 July 2024 (19:00 UTC)  (Read 123173 times)

Offline starbase

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Martin:
- main objective was launch and seperation of first satellites
- then demo phase of upper stage in micro gravity, can't be tested on ground
- reignited apu, then it stopped. We don't know, why it stopped
- upper stage behaved to this new status, vinci was not restarted
- upper stage was started to be passivated
- passivation worked perfectly
- 2 capsules were not released as planned, would have created <unaudible>
- will need to get the data and understand it

inaudible was "additional debris"
bit.ly/SpaceLaunchCalendar ☆ bit.ly/SpaceEventCalendar

Offline Remes

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Wouldn't the APU problem prevent future starts:
- of course you have to understand things, you don't understand
- not all missions require restart
- One more start this year, 6 next year
- it is very clear, that APU behaves very differently in microgravity then on earth

How long will it take:
- have to retrieve all data from all gournd stations
- expect 1...2 weeks to have much more informations

Aschbacher:
- we will be very transparent [that would be a first, perhaps we should show them press conferences around engine no 3]

How long will the second stage remain on orbit:
- time is unknown
- we didn't demonstrate deorbit, that is clear
- lot of upper stages are up there

---
my opinion: If the APU doesn't behave as expected, it could also misbehave in the launch phase. So that might definetly delay things.

Offline Remes

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Second launch forcasted in December, after Vega-C.

Offline Rik ISS-fan

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(Lets hope reentry doesn't occur over populated areas with that heatshield-Nyx-Bikini-thing).
Airbus also had a reentry vehicle payload on this mission.
In my opinion they need to solve the APU relight (in orbit start) before they can perform a SSO mission, what the CSO-3 satellite requires (800km). I think they are downplaying this issue. They are at 85% successful mission.
But the clean space policy blocks further launches until the APU issue is resolved.
The half year until the second Ariane 6 flight is likely enough to solve the APU in orbit start.
Single burn GTO launches, that Ariane 5 ECA did, can be performed.

It went much better than I expected, but Ariane 6 isn't fully operational in my opinion.

They also addressed the issue with the APU during the broadcast. We have seen other behavior on other launches.

This hurts:
« Last Edit: 07/09/2024 11:12 pm by Rik ISS-fan »

Offline TheKutKu

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(Lets hope reentry doesn't occur over populated areas with that heatshield-Nyx-Bikini-thing).
Airbus also had a reentry vehicle payload on this mission.
In my opinion they need to solve the APU relight (in orbit start) before they can perform a SSO mission, what the CSO-3 satellite requires. I think they are downplaying this issue. They are at 85% successful mission.
But the clean space policy blocks further launches until the APU issue is resolved.
The half year until the second Ariane 6 flight is likely enough to solve the APU in orbit start.
Single burn GTO launches, that Ariane 5 ECA did, can be performed.

It went much better than I expected, but Ariane 6 isn't fully operational in my opinion.

They also addressed the issue with the APU during the broadcast. We have seen other behavior on other launches.

This hurts:


Next launch won't need a restart, and launch of CSO 3 for national security may have priority over european regulation (which are poorly  defined anyway), so there may be reason to believe it won't affect the launch campaign.
« Last Edit: 07/09/2024 11:14 pm by TheKutKu »

Offline Remes

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There is something like a flame coming up 59:30. That can't be a rcs thruster? There are no on the srb. It's there for a few frames then they cut away.

Offline Steven

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For an organisation that has been bragging about its incredible "Zero Debris approach", they are surprisingly dismissive of the fact that a 2 ton stage is now left in orbit and will crash uncontrolled back on Earth some day.

The good news now the ULPM remains in orbit might be that the five experiments that are on board (PariSat, Peregrinus, LIFI, SIDLOC and YPSat) could have the possibility to continue gathering data. I'm sure the organisations and the hundreds of students involved will be very pleased with such an outcome. Too bad it wasn't mentioned during the press conference if this is possible. No journalist cared to ask apparently.

Offline Rik ISS-fan

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Don't forget the dummy payload plate. That plate where the payloads are mounted onto has significant mass.

@Remes: ? a booster separation motor igniting early?

CSO3 will go to 800km SSO. This requires two Vince ignitions. If the second APU ignition fail on that launch, the ULPM will remain in orbit for >>100years. The VA262 ULPM will decay in 5 to 25 years (according to the graphic), within the 25year deorbit requirement. This definitely not the case with the CSO3 VA263 ULPM. If that launch has a similar anomaly, by the clean space standards they are required to perform a debris removal mission.
I see two other solutions: 1) using Astris (kick-stage that afaik isn't available in december 2024).
2) Implementing a back up deorbit system. (Solids / the original ULPM design without APU, more helium pressurization gas)
« Last Edit: 07/09/2024 11:54 pm by Rik ISS-fan »

Offline Galactic Penguin SST

Does anybody know what other currently active launch vehicle's upper stages use an APU to pressurize the fuel/oxidizer tanks?
Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery.

Offline freda

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There is something like a flame coming up 59:30. That can't be a rcs thruster? There are no on the srb. It's there for a few frames then they cut away.
Yes. I watched the launch live, and also saw that.

Offline Ollopa11

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Sorry,  but this thread renaming is not acceptable.  The primary mission was a success.  By this measure, there should be a thread called: ANOMALY Boeing Starliner (CST-100) CFT mission discussion thread : May-July 2024

I am not holding my breath. 

Offline jcm

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Sorry,  but this thread renaming is not acceptable.  The primary mission was a success.  By this measure, there should be a thread called: ANOMALY Boeing Starliner (CST-100) CFT mission discussion thread : May-July 2024

I am not holding my breath. 

I would consider this a much bigger anomaly that the niggling issues with Starliner: Ariane 6 leaving 7700 kg of hardware in a 580 km orbit by mistake.
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Offline friendly3

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Sorry,  but this thread renaming is not acceptable.  The primary mission was a success.  By this measure, there should be a thread called: ANOMALY Boeing Starliner (CST-100) CFT mission discussion thread : May-July 2024

I am not holding my breath.

Ariane 6's upper stage failed to make its last burn, preventing two payloads (the two most important ones IMO) from reaching their destination which was atmospheric reentry.
The Starliner performed all the necessary burns to reach its first destination which is the ISS, I assure you that if the Starliner fail to make its deorbit burn and leave Butch and Sunni stranded in orbit for 5 to 25 years the thread will be renamed with much harsher words than "anomaly". But it would also be because the payload is of much higher value (no offense).
You can breathe now.
« Last Edit: 07/10/2024 04:18 am by friendly3 »

Offline LouScheffer

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Sorry,  but this thread renaming is not acceptable.  The primary mission was a success.  By this measure, there should be a thread called: ANOMALY Boeing Starliner (CST-100) CFT mission discussion thread : May-July 2024

I am not holding my breath. 
I would consider this a much bigger anomaly that the niggling issues with Starliner: Ariane 6 leaving 7700 kg of hardware in a 580 km orbit by mistake.
Clearly opinions on this sort of anomaly vary widely.  On Wikipedia I tried to change the three Atlas missions where the Centaur later fragmented (creating considerable space debris) to "Partial success".  I got shouted down by folks who said that the payload was delivered as planned, so it was a "success" despite the extra (and not understood, to my knowledge) creation of debris.

Offline jdon759

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Surely naming the thread "Partial failure: ..." would be the clearest option?
Where would we be today if our forefathers hadn't dreamt of where they'd be tomorrow?  (For better and worse)

Offline edkyle99

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Surely naming the thread "Partial failure: ..." would be the clearest option?
It was clearly a successful inaugural launch.  The failure was during the on-orbit upper stage "Demo Phase", preventing a deorbit burn.  Similar to, for example, a few early successful Falcon 9 launches that saw failed Stage 2 disposal burns, etc.  Relabel this one and you'll have to relabel those as well.

I wouldn't have a problem with post-launch "Anomaly", but all caps "ANOMALY" bugs me.

 - Ed Kyle
« Last Edit: 07/10/2024 02:56 am by edkyle99 »

Offline friendly3

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Surely naming the thread "Partial failure: ..." would be the clearest option?
It was clearly a successful inaugural launch.  The failure was during the on-orbit upper stage "Demo Phase", preventing a deorbit burn.  Similar to, for example, a few early successful Falcon 9 launches that saw failed Stage 2 disposal burns, etc.  Relabel this one and you'll have to relabel those as well.

I wouldn't have a problem with post-launch "Anomaly", but all caps "ANOMALY" bugs me.

 - Ed Kyle

Technically you're right but you forgot to mention that the Ariane 6 upper stage still has two payloads attached to it that won't be delivered to their targeted destination, which was atmospheric reentry. The empty Falcon 9 upper stages had no payload left on them.
So it's a sort of grey area between "anomaly" and "partial failure", I don't mind the caps.

Offline seb21051

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Well, if they had tried to recover the fairings, they might have saved a few euros . . . I'm sure those things don't cost much under $10m for the pair.

I got the idea when I saw that one fairing of theirs float down. It seemed to be clapping hands.

Hey, now there's a business idea!  Offer to recover all the expendable's fairings!  Better still, build their fairings for them, so they can be recovered.

Hang on, I need to call my VC pimp.
« Last Edit: 07/10/2024 04:12 am by seb21051 »

Offline FutureSpaceTourist

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https://newsroom.arianespace.com/europes-new-ariane-6-rocket-powers-into-space-54117/

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July 09, 2024
EUROPE'S NEW ARIANE 6 ROCKET POWERS INTO SPACE

Europe's new heavy-lift rocket, Ariane 6, made its inaugural flight from Europe's Spaceport in French Guiana at 16:00 local time on 9 July (+4  20:00 time BST, +5 21:00 time CEST).

Ariane 6 is the latest in Europe's Ariane rocket series, taking over from Ariane 5, and featuring a modular and versatile design that can launch missions from low-Earth orbit and farther out into deep space.

"A completely new rocket is not launched often, and success is far from guaranteed. I am privileged to have witnessed this historic moment when Europe's new generation of the Ariane family lifted off – successfully – effectively reinstating European access to space,” said ESA's Director General Josef Aschbacher.

"An inaugural launch is a huge undertaking from thousands of people who have worked relentlessly for years. To see it perform wonderfully at the first attempt is testament to their dedication and a demonstration of European excellence in engineering and technology. Heartfelt thanks go to the teams at ESA, CNES, ArianeGroup and Arianespace for their hard work to get to this point. I also want to sincerely thank our Member States for having enabled and supported the Ariane 6 programme along the way. Not always easy, but the endurance shown has paid off handsomely today."

This inaugural flight, designated VA262, is a demonstration flight whose aim is to show the capabilities and prowess of Ariane 6 in escaping Earth's gravity and operating in space. Nevertheless, it had several passengers on board.

At 21:06 BST, 22:06 CEST, one hour after liftoff, the first set of satellites on board Ariane 6 were released from the upper stage and placed into an orbit 600 km above Earth. Satellites and experiments from various space agencies, companies, research institutes, universities and young professionals were included on this inaugural flight.

In addition to the rocket, the liftoff demonstrated the functioning of the launch pad and operations on the ground at Europe's Spaceport. The new custom-built dedicated launch zone was built by France's space agency CNES and allows for a faster turnover of Ariane launches.

On the occasion of the launch, Philippe Baptiste, CEO of CNES, said: “With this first successful launch by Ariane 6, Europe has finally recovered its capacity to access space. Beyond the great emotion I am feeling right now, my first thoughts are for all the teams in Kourou, Paris, Vernon, Les Mureaux, Toulouse, Bremen, Lampoldshausen, Liège, Barcelona, Colleferro, Zürich and everywhere else in Europe who made this success possible. I would like to acknowledge the commitment of the employees of CNES, ESA, ArianeGroup, Arianespace and our subcontractors. The last few months have been intense, and I would like to thank them all. Europe can be proud of its space programme, Europe can be proud of its knowledge and expertise. Together, let's prepare the future of launchers and space.”

Ariane 6 was built by prime contractor and design authority ArianeGroup. “With the successful first flight of Ariane 6, the European space industry has moved into a new era,” said Martin Sion, CEO of ArianeGroup. “This historic launch demonstrates the unfailing commitment of our teams and partners, whom I would like to thank warmly for this success, which reflects on the entire European industry. Seeing Europe’s new launcher lift off into space marks the culmination of an outstanding technical and technological adventure, and the beginning of a long history of Ariane 6 operations. The next flight models are already in production and the stages of the second model will be shipped to the Guiana Space Centre this autumn for the first commercial flight of Ariane 6.”

Next: tech demos, controlled deorbit and capsule separation

With the placement of satellites into orbit, Ariane 6 has demonstrated that it can successfully launch its payloads into space, but ground control has more in store for its inaugural flight. Over the next hour, Ariane 6's upper stage will show again that it can restart its Vinci engine using the novel auxiliary propulsion unit. This restart capability will allow Ariane 6 to drop off multiple passengers into different orbits on future flights and deorbit itself through Earth’s atmosphere at the end of its mission, to ensure it does not become space debris.

On this flight the Ariane 6 upper stage is set to release two reentry capsules as it enters Earth's atmosphere for a clean disposal to burn up harmlessly, leaving no space debris in orbit.

The next Ariane 6 is planned for launch this year on its first commercial flight under Arianespace as operator and launch service provider. “The success of this first flight marks the start of Ariane 6’s operational career, giving Europe an autonomous access to space,” added Stéphane Israël, CEO of Arianespace. “The new launcher’s order book is proof of the versatility of Ariane 6 and of its capacity to accomplish a wide range of missions into multiple orbits. It reflects the confidence that customers have in Ariane 6 for both their institutional and commercial missions. We are eager to begin operating our new launcher.”

--
This is a joint press release from the Ariane 6 Task Force (ESA, CNES, ArianeGroup, Arianespace)

Offline FutureSpaceTourist

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5,4,3,2,1 allumage Vulcain! 🚀

Relive the moment the first Ariane 6 launched from @EuropeSpacePort, French Guiana 👇

 🔊Turn the sound all the way UP ⬆️ #GoAriane!

https://twitter.com/elonmusk/status/1810901185181929564

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Congratulations!

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