Arianespace launch thread

[Ultimate Steve]

That's looking a bit like stage two didn't ignite.

[tater]

Confirming LOV.

[Gargamel]

Loss of mission.

3 minutes ago, Ultimate Steve said:

That's looking a bit like stage two didn't ignite.

In before Manley.... Check yo' stagin'!

[.50calBMG]

Man, that's unfortunate. How many more flights did the original Vega have before Vega c replaced it?

[Ultimate Steve]

1 minute ago, .50calBMG said:

Man, that's unfortunate. How many more flights did the original Vega have before Vega c replaced it?

Looks like 5, for a grand total of 20 flights, although the first flight of Vega C is supposed to be after the next two Vega flights. They are going to operate them together for a while.

Of course, those plans could easily change now.

This is still a 93 percent success rate for Vega, though.

[Nightside]

[.50calBMG]

Dang, was really hoping she could get that mythical 100%. Vega has always been my favorite ESA launcher. 

[tater]

 

[Scotius]

Sooo... engine is good. Maybe it's time to start working on that small idea of reusability that is making the rounds on the market?

[tater]

1 hour ago, Scotius said:

Sooo... engine is good. Maybe it's time to start working on that small idea of reusability that is making the rounds on the market?

Does reusability increase or decrease jobs?

[mikegarrison]

2 hours ago, tater said:

Does reusability increase or decrease jobs?

Customers increase jobs. If reusability increases customers, then yes.

[Nightside]

2 hours ago, tater said:

Does reusability increase or decrease jobs?

Rocket polisher is a job...

[tater]

53 minutes ago, mikegarrison said:

Customers increase jobs. If reusability increases customers, then yes.

I suppose it depends on if reusable rockets have the same number of man hours per flight, the number of customers being equal, though.

[Ultimate Steve]

And even if rapidly, fully reusable rockets reduce jobs, the new industries created by those rockets (asteroid mining, tourism stations, MOAR space probes, planetary bases, etc) that are related enough to the rocket building skillset will definitely provide employment.

[XB-70A]

Ariane 6' mobile gantry has rolled out for the first time!

 

P.S. - Lower the volume... really.

 

Another video, from the official CSG video team, and with more detailed sights of the gantry.

 

Edited July 29, 2019 by XB-70A

[Scotius]

Mmmmm, pretty. Sleek. Just like the rocket it will serve.

[tater]

 

[tater]

 

[XB-70A]

 

 

Link

[Scotius]

"Better deal"? Did... did Arianespace cut launch prices down? Say it ain't so!!!

Things are a'changing in the stale market of space launches - that's for sure.

[Ultimate Steve]

1 minute ago, Scotius said:

"Better deal"? Did... did Arianespace cut launch prices down? Say it ain't so!!!

Things are a'changing in the stale market of space launches - that's for sure.

Remember, Ariane 5 does rideshares to GTO, and IIRC that sat is pretty light and can fit in the lower section of the payload adapter (the cheaper spot of the two).

[XB-70A]

Press release from the Independent Inquiry Commission about their investigations in the failure of Vega's 15th flight:

Vega Flight VV15: Findings of the Independent Inquiry Commission’s investigations

The Independent Inquiry Commission, tasked with analyzing the failure of Vega Flight VV15, submitted its findings on Wednesday, September 4, 2019.

Co-chaired by the Inspector General of the European Space Agency (ESA); and the Senior Vice President, Technical and Quality of Arianespace; the Commission was appointed on Thursday, July 11, 2019. According to its assigned task, after having analyzed the flight data, the Commission identified possible causes for the anomaly and drew up recommendations for Vega to resume launches under the requisite conditions of safety, security and reliability.

The Commission identified the anomaly’s most likely cause as a thermo-structural failure in the forward dome area of the Z23 motor. Based on this, the Commission has proposed:

• An exhaustive verification plan of its findings,
• A set of corrective actions on all subsystems, processes and equipment concerned. 

After these actions are completed, the resumption of Vega launches is planned by the first quarter of 2020, enabling a return to the string of 14 successful launches already recorded by Vega.

Flight data analysis

The Vega launcher lifted off as scheduled on July 10, 2019 at 10:53 p.m. (local time in French Guiana). At precisely 130s 850ms after liftoff – and shortly after ignition of the second stage (Zefiro 23) –an anomaly occurred on the launcher, leading to the premature end of the mission.

The work of the Independent Inquiry Commission is based on the following:

• A complete analysis of measurements recorded during Flight VV15.
• The study of documents concerning Vega’s production, quality and technical history, including the 14 successful Vega launches to date.
• Investigations at different production and operational sites involving the staff from the prime contractor, Avio.

These investigations confirm that all preparation and countdown operations for the VV15 launch, as well as the flight conditions until after the ignition of the Zefiro 23 second stage (Z23) proceeded normally. In particular:

• The operation of the P80 first stage (engine ignition, atmospheric phase, P80 propulsion and separation) was nominal; all parameters were as expected and in line with those from preceding flights.
• The ignition and powered phase of the Z23 stage was nominal during the first 14s 25ms and all parameters were as expected and in line with those for preceding flights.

The anomaly occurred at 130s 850ms, based on the following observations:

• At 130s 850ms, a sudden and violent event occurred on the Z23 motor.

This event led to a breakup of the launcher in two main parts: the Z23; and the assembly composed of the fairing, satellite, flight adapter, AVUM and the Zefiro 9 stage (Z9).

After this event, the key telemetry measurements and observations were as follows:

• At 135s: the upper assembly trajectory started to deviate from the nominal one.
• At 213s 660ms: in accordance with the safety procedures in force at the Guiana Space Center, a neutralization command was sent by range safety authorities, and was confirmed as executed by analysis of telemetry data.
• At 314s 25ms: telemetry data and signals from the launcher were no longer received by ground radar and telemetry stations.

The mission came to a premature end, without causing any damage to people or property.

Causes of the anomaly and work plan

Based on these observations, and additional analyses concerning the few milliseconds around the anomaly, the Commission has performed a systematic and exhaustive analysis of the possible causes. The Commission identified as the most likely cause of the anomaly a thermo-structural failure in the forward dome area of the Z23 motor. Other possible causes such as inadvertent activation of the Z23 neutralization system have been found unlikely.

Furthermore, after specific investigations, the Independent Inquiry Commission did not find any evidence of a malicious act.

The Commission has proposed:

• An exhaustive verification plan of its findings based on analyses and tests,
• A set of corrective actions on all subsystems, processes and equipment concerned.

This action plan shall enable a resumption of Vega launches under all requisite conditions of reliability by the first quarter of 2020. A key point will validate the effective implementation of Independent Inquiry Commission recommendations prior to flight resumption and submit its final conclusions to ESA and Arianespace.

Daniel Neuenschwander, ESA Director of Space Transportation, said: “In the past weeks, members of the inquiry commission have done a remarkable job, with the support of the prime contractor Avio. I want to encourage all the teams to implement corrective measures for the reliable return to flight of Vega, securing Europe’s full autonomy of access to space.”

Stéphane Israël, Arianespace CEO added: “I would like to thank the co-chairs of the Independent Inquiry Commission, as well as all members. Their work on identifying the causes of the Flight VV15 anomaly, and the well-defined actions to be carried out from now until the end of the year, will pave the way for a resumption of Vega launches as from the first quarter of 2020, under the requisite conditions of reliability. Along with our industrial partner Avio, we will be doing everything in our power to reconnect with the 14 successful launches already recorded by our light launch vehicle.”

 

Source: http://www.arianespace.com/press-release/vega-flight-vv15-findings-of-the-independent-inquiry-commissions-investigations/

 

I hope they will make the full report available, just like they did in the past for VA88 (Ariane 501).

---

 

Reminder: despite her "youth", Vega is the descendant of a 40-year-old program. Everything started back in 1977, when the University of Rome and officials from the San Marco Launch Platform suggested to "upgrade" the Scout light launchers. The development was a literal chaos, leading to the unique launch of the real ancestor of Vega, Scout 2 on the 19 March 1992:

  

 

Despite its name, this launcher had nothing to do with the original Scout, the main stage being no longer powered by an Algol from Rocketdyne, but by a vectorable P.A.P from Ariane 3/4.

Both "boosters" aside of the P.A.P actually were mock-ups of what will become the Zefiro 2nd and 3rd stage of Vega. 

Edited September 5, 2019 by XB-70A

[Reactordrone]

11 hours ago, XB-70A said:

 

Reminder: despite her "youth", Vega is the descendant of a 40-year-old program. Everything started back in 1977, when the University of Rome and officials from the San Marco Launch Platform suggested to "upgrade" the Scout light launchers. The development was a literal chaos, leading to the unique launch of the real ancestor of Vega, Scout 2 on the 19 March 1992:

  

 

Despite its name, this launcher had nothing to do with the original Scout, the main stage being no longer powered by an Algol from Rocketdyne, but by a vectorable P.A.P from Ariane 3/4.

Both "boosters" aside of the P.A.P actually were mock-ups of what will become the Zefiro 2nd and 3rd stage of Vega. 

Also, how Kerbal looking is that rocket?

[Mr. Peabody]

Real spacemen speak French.

[StrandedonEarth]

14 hours ago, Reactordrone said:

Also, how Kerbal looking is that rocket?

I thought the same thing, and with apologies to Rob Zombie, I’d say it’s more Kerbal than Kerbal....

Edited September 6, 2019 by StrandedonEarth