Розетта!

[Александр Ч.]

ESA Operations ‏@esaoperations 3 мин.
It did! Details later... RT @ESA_Rosetta: Word is that last night's test burn went fine. Report from @esaoperations later!

[che wi]

Rosetta: When can we see the comet?

"ESA, 27 марта 2014 г."

Visualisation of how comet 67P/Churyumov-Gerasimenko will appear in Rosetta's OSIRIS narrow angle camera between May and August 2014. During this time, the 4 kilometre-wide comet will 'grow' in Rosetta's field of view from appearing to have a diameter of less than 1 camera pixel to well over 2000 pixels -- equivalent to a resolution of around 2 metres per pixel -- allowing the large surface features to be resolved.

The comet featured in this animation is an artist's impression. It is shown to scale, but the shape and surface details are only representative. In addition, the real comet will be rotating during Rosetta's approach. The planets are not to scale.

[свернуть]

[PIN]

Заметен уже хвост, позавчера видел эту серию, сегодня она уже в Интернет.
Оценка размера видимой светящейся области сейчас - порядка 500 км, насколько помню
http://www.esa.int/spaceinimages/Images/2014/05/Comet_develops_a_coma

[Александр Ч.]

ESA Operations ‏@esaoperations  2 мин.  
Tomorrow, @ESA_Rosetta conducts the first of 3 #BigBurns. All are crucial to arrive at #67P http://blogs.esa.int/rosetta/2014/05/20/the-big-burns-part-1/ ... pic.twitter.com/Fk1RSpLfgC
 
 

 
 
 

[RustemNur]

И как там с этим crucial?

[PIN]

All nominal

[amadeys]

RustemNur пишет:

И как там с этим crucial?

Ещё рано, запланировано на 15.23 UTC (19.23 ЛМВ).

[amadeys]

amadeys пишет:

RustemNur   пишет:

И как там с этим crucial?

Ещё рано, запланировано на 15.23 UTC (19.23 ЛМВ).

Пардон, на дату не посмотрел  :oops:

[RustemNur]

SOE пишет:
All nominal

Спасибо!

[che wi]

Rosetta's first Big Burn complete
http://blogs.esa.int/rosetta/2014/05/22/rosettas-first-big-burn-complete/

The Rosetta team reports that last night's orbit correction manoeuvre (OCM) – or thruster burn – was completed as planned, providing the first of three big orbital 'pushes' to get the spacecraft lined up for comet arrival in August.

The burn ran for 7hrs:16mins, one of the longest burns in ESA spaceflight history, and began as scheduled at 15:23 UTC (17:23 CEST). The mission control team had live radio contact with the craft via ESA's New Norcia tracking station, and could follow progress in real time from a control room at ESOC.

"Last night's manoeuvre was absolutely necessary as part of a series of burns that will reduce Rosetta's speed with respect to the comet so that we arrive at 67P on 6 August with a relative speed of about 1 m/s," said Sylvain Lodiot, Rosetta Spacecraft Operations Manager.

The mission team watched closely last night as the burn was progressing, 500 million km from Earth.

"The thrusters and propulsion system overall performed very well, and we had a nominal completion of the burn at 22:39 UTC (00:39 CEST today)," says Sylvain. "It will take a few days for the flight dynamics team to analyse data and determine the final actual change in speed, but it won't be too far from what we planned."

The OCM was programmed to deliver a relative change in speed with respect to comet 67P of 291 metres/second (m/s).

The burn used about 218 kg of fuel.

Two more 'big burns' are planned, on 4 June and 18 June; these will be followed by a series of six smaller burns until arrival at the comet (see table in our earlier blog post, which covers up to the end of July; there are two final 'pre-orbit insertion' and 'orbit insertion' burns planned on 3 and 6 August – details later).

[che wi]

During the night, roughly around 02:30 CEST, Rosetta passed through the point of 1 000 000 km from the comet!

[che wi]

Big Burn 2 complete
http://blogs.esa.int/rosetta/2014/06/05/big-burn-2-complete/

Last night's orbit correction manoeuvre ran as expected, with nominal completion at 23:00 CEST (21:00 UTC).

The thruster burn got underway as scheduled at 16:21:58 CEST (14:21:58 UTC) and ran for 6hrs:39mins, about 2 minutes less than planned but well within margins. About 190 kg of fuel was used.

The manoeuvre was triggered automatically by a command stack that had been uploaded on Tuesday. Engineers were able to monitor the event in real time via ESA's 35m deep-space antenna at New Norcia, Australia.

The Rosetta flight control team can't say what the precise results were in terms of actual delta-v delivered until Flight Dynamics here at ESOC do a review and orbit determination, which takes a day or so, but if a burn runs for anywhere close to the planned time, then we know it went more or less OK – as it did (see note below).

Next OCM is planned for 18 June; details to follow.

[Александр Ч.]

ESA Operations ‏@esaoperations  4 мин.  
Initial analysis 4.06 thruster burn ESA_Rosetta slowed by ~269.49 m/s w/respect to #67P - v. close to plan http://blogs.esa.int/rosetta/2014/06/05/big-burn-2-complete/ ... #BigBurn2

[Александр Ч.]

ESA Operations ‏@esaoperations  12 мин.  
MT @ESA_Rosetta: During thruster burns, here's what the mission team are doing (& feeling!) http://ow.ly/xVuJx  Next burn 18 June!

[Quoondo]

а сколько времени может работать посадочный модуль?

[PIN]

Пока есть деньги на его и Розетты использование на Земле и топливо на Розетте.

[Quoondo]

SOE пишет:
Пока есть деньги на его и Розетты использование на Земле и топливо на Розетте.

То есть теоретически миссию могут продлить лет на 5?

[che wi]

Main Rosetta burn

"ESA | 13 июня 2014 г."

Rosetta is now closing its target: comet 67P/Churyumov--Gerasimenko and key manoeuvres have been done recently to slow down the spacecraft with the objective to have Rosetta orbiting the comet early August.

Rosetta has successfully completed the first of three main thruster burns. Two further main burns in June (4 and 18), and six smaller burns between now and August, are ensuring that the spacecraft is on target for comet 67P/Churyumov-Gerasimenko.

The first burn took place 500 million kilometres away on 21 May, used 218 kilogrammes of fuel and lasted 7 hours and 16 minutes -- one of the longest thruster burns in ESA's history.

This video shows members of the mission team monitoring the burn in real time at the Rosetta control room at the European Space Operations Centre at Darmstadt in Germany.  It also includes the role of the spacecraft's ALICE instrument and how the Rosetta Plasma Consortium, a set of five instruments, is preparing for the release of the Philae lander onto the comet's surface.

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[Александр Ч.]

ESA Operations @esaoperations  ·  20 мин

Telemetry now coming in from @ESA_Rosetta shows thrusters firing as planned. All looks good today! #BigBurn

 ESA Operations @esaoperations  ·  21 мин

Still waiting for screen to show thrusters temperature rise for today's #BigBurn pic.twitter.com/TaWOMoZwwW


 ESA Operations @esaoperations  ·  28 мин

Abt 6 mins to go now, waiting for signals from #Rosetta indicating start of today's orbit correction burn #BigBurn

 ESA Operations @esaoperations  ·  46 мин

On #Rosetta, commands to turn thrusters ON for today's orbit correction should have run. Waiting 24mins:22secs for confirmation #BigBurn

[che wi]

BIG BURN No. 3 Update 19:09 CEST
http://blogs.esa.int/rosetta/2014/06/18/big-burn-no-3-update-1909-cest/

Today's orbit correction manoeuvre ended fine, with no issues. Completed as of 17:33 CEST on board (confirmation received ~17:54 CEST on ground). All OK with the mission!