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#220 by Svetoslav on 14 Mar, 2016 10:26
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Twitter sources say signal has been received - everything OK so far.
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#221 by jacqmans on 14 Mar, 2016 10:26
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.
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#222 by Galactic Penguin SST on 14 Mar, 2016 10:26
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Twitter sources say signal has been received - everything OK so far.
ESA Operations @esaoperations
Breeze 2nd burn CONFIRMED #ExoMars -
#223 by jacqmans on 14 Mar, 2016 10:30
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#ExoMars2016 : A heavy-lift Proton-M rocket blasted off from the Baikonur Cosmodrome on Monday, carrying the Russian-European ExoMars 2016 spacecraft to set out on a nine-month journey to Mars for an ambitious mission of discovery to unlock the secrets of the Martian past and present.
The 58-meter tall Proton rocket lifted off from Site 200/39 at 9:31 UTC, rising with a total thrust of over 1,000 metric tons, departing Kazakhstan to the north east in the launcher’s first interplanetary mission in nearly two decades. Ascending through the dense layers of the atmosphere, the rocket’s first stage fired its engines for two minutes before handing off to the second stage for a three-and-a-half minute burn. The 4,300 Kilogram Trace Gas Orbiter and Schiaparelli Lander were revealed when the payload fairing separated during the firing of the rocket’s third stage.
Proton finished its job nine minutes and 42 seconds into the flight after a flawless ascent mission, to the relief of the Mission Team and many onlookers as the selection of the Proton rocket had caused some anxiety given the vehicle’s recent reliability struggles. But the mission is far from over as the Briz-M has taken over control for an ascent lasting throughout the day on Monday with spacecraft separation after four firings of the Briz-M main engine, nearly 11 hours after liftoff.
Briz-M successfully carried out its first engine firing immediately after separating from the Proton booster, lifting the stack into a Low Earth Parking Orbit. Before departing for Mars, Briz-M will make nearly three laps around the planet, firing its engine to methodically raise its orbit ahead of a final push to enable ExoMars to depart Earth’s gravitational influence and head to Mars for arrival in October.
http://www.roscosmos.ru/22026/
ESA/ROSCOSMOS/SPACEFLIGHT101/#ПротонМ #ExoMars2016 #ExoMars #Байконур #Запуск http://www.esa.int/spaceinvi…/…/2016/03/ExoMars_2016_liftoff
http://www.esa.int/…/Space_S…/ExoMars/ExoMars_launch_updates
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#224 by vapour_nudge on 14 Mar, 2016 10:43
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Two down, two to go. Still to go:
+03 Hours 52 minutes Third Briz M Ignition
+10 Hours 16 minutes Fourth Briz M Ignition
+10 Hours 41 minutes ExoMars Separation
A long wait until around 13:23 GMT
Can someone please counsel plutogno -
Come on, third time's a charm.
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#225 by plutogno on 14 Mar, 2016 10:46
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This is also my worst fear... that the Mars 96 or Phobos-Grunt scenario will be repeated.
and Mars Polar Lander... and CONTOUR...
it's not a question of pessimism. it's just that it is the main recommendation of two accident investigations (of NASA missions, admittedly). and planning a mission without taking this into consideration would be very short-sighted -
#226 by owais.usmani on 14 Mar, 2016 10:49
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Why do people keep on bringing Phobos Grunt and Mars 96 in this thread? Poor Briz-M had nothing to do in any of them.
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#227 by Svetoslav on 14 Mar, 2016 10:53
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As someone commented in the thread about Blue Origin - human brain doesn't work as a calculator. This is the same case - yes, we can be comfortable that Briz-M has been able to complete many missions successfully and the chance for failure is low, the human fear may be irrational, but it's real.
Believe me, nobody wishes to see ExoMars failing.QuoteWhy do people keep on bringing Phobos Grunt and Mars 96 in this thread? Poor Briz-M had nothing to do in any of them.
Nobody was comparing Briz-M to Blok-D (in the case of Mars 96) or to MDU (Phobos-Grunt). It was simply pointing to the fact that burns are happening when tracking stations (or ships) aren't listening to the signal.
Referring to Mars 96 failure ( http://www.jamesoberg.com/plutonium.html ) -
""" The second fourth-stage burn was supposed to occur as the spacecraft flew northeast over the coast of Uruguay on the eastern side of south America. Normally, the Russians would station a tracking ship off the coast of Africa to monitor this burn and provide extra commands if needed. But most of the tracking ships had been sold for scrap and the one remaining vessel was rusting in St Petersburg harbour. In the event, the fourth stage failed and the rocket and the Mars-96 probe remained in the parking orbit.
At the time, nobody knew it had failed. The probe's simple-minded autopilot never noticed the absence of the burn because a minute after the scheduled completion time, crossing the West African coast over the Côte d'Ivoire, it separated from the fourth stage and turned on its own small engine, as originally planned. This sent it into an elliptical orbit and towards its fiery demise. """" -
#228 by vapour_nudge on 14 Mar, 2016 11:15
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95% of the things we worry about in life never happen.
- or in respect to Proton, about 90%
I prefer to focus on the 90% likelihood of success rather than the 10% chance of failure. If you had those odds guaranteed, you'd be down the casino every day.
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#229 by vapour_nudge on 14 Mar, 2016 11:31
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Less than three hours to go to untll the 3rd burn
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#230 by Galactic Penguin SST on 14 Mar, 2016 11:46
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In the meantime, enjoy the launch photos! It's not commonplace to have big enough Proton wallpapers around!
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#231 by Galactic Penguin SST on 14 Mar, 2016 11:49
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#232 by Galactic Penguin SST on 14 Mar, 2016 11:50
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All photos credit: ESA–Stephane Corvaja, 2016
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#233 by Prober on 14 Mar, 2016 12:04
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#234 by Svetoslav on 14 Mar, 2016 12:26
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ExoMars is about to begin its 3rd burn soon.
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#235 by Svetoslav on 14 Mar, 2016 12:42
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Third burn SUCCESSFUL!
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#236 by Star One on 14 Mar, 2016 12:46
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Anatoly Zak – @RussianSpaceWeb
#ExoMars is now on its longest loop around the Earth. Next and final #Briz maneuver in ~6 hours. -
#237 by Stan Black on 14 Mar, 2016 12:53
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It's rarely mentioned on the web, but on this mission we're flying a Bulgarian instrument as part of the Russian FREND suit. The instrument is called Lulin-Mo and it's similar to the instrument we flew aboard unsuccessful Mars 96 and Phobos-Grunt missions.
There will be a press conference in Sofia, but I won't attend because I'll miss information about Briz-M burns.
Found this:-
https://www.researchgate.net/publication/272028212 -
#238 by Galactic Penguin SST on 14 Mar, 2016 13:03
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Some more photos:
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#239 by Galactic Penguin SST on 14 Mar, 2016 13:06
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Come on, third time's a charm.
