Author Topic: Meridian #2 launch - May 21, 2009  (Read 26021 times)

Offline Nicolas PILLET

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Meridian #2 launch - May 21, 2009
« on: 10/16/2008 02:29 pm »
During the visit of President Medvedev to Plesetsk on october 11th, a Soyouz launcher was visible in the MIK.

I think it is likely to be the Soyouz-2.1a launcher for the second Meridian.

Question : Are the Soyouz-U launchers prepared in this MIK too ?
« Last Edit: 05/13/2009 05:54 pm by anik »
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Offline William Graham

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Re: Meridian n°2 launch - end of 2008
« Reply #1 on: 11/14/2008 05:21 pm »
It was probably the Soyuz-U that was launched today.

Offline anik

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Re: Meridian #2 launch - May 21, 2009
« Reply #2 on: 05/13/2009 05:55 pm »
The launch is planned at approximately 21:00 UTC on May 21st.

Offline anik

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Re: Meridian #2 launch - May 21, 2009
« Reply #3 on: 05/19/2009 07:04 pm »
The launch is planned at approximately 21:00 UTC on May 21st

Possibly even 21:53 UTC.

Offline William Graham

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Re: Meridian #2 launch - May 21, 2009
« Reply #4 on: 05/21/2009 10:03 pm »
If launch occurred on time the Fregat should be separating from the Soyuz about now.

Offline William Graham

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Re: Meridian #2 launch - May 21, 2009
« Reply #5 on: 05/21/2009 10:11 pm »
Launch occurred on time.
http://www.infox.ru/authority/defence/2009/05/21/souz_2_start.phtml
http://www.interfax.ru/society/news.asp?id=81077

Spacecraft separation expected at around 00:13 GMT tomorrow.
« Last Edit: 05/21/2009 10:16 pm by GW_Simulations »

Offline jan_carlo_bascu

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Re: Meridian #2 launch - May 21, 2009
« Reply #6 on: 05/22/2009 03:08 am »

Offline spaceamillion

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Re: Meridian #2 launch - May 21, 2009
« Reply #7 on: 05/23/2009 12:52 pm »

Offline William Graham

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Re: Meridian #2 launch - May 21, 2009
« Reply #8 on: 05/23/2009 02:47 pm »
Both Jonathan McDowell and the Russian Nuclear Forces project are reporting that the spacecraft was placed into a lower orbit than planned due to an anomaly with the Fregat.

Offline Skyrocket

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Re: Meridian #2 launch - May 21, 2009
« Reply #9 on: 05/23/2009 06:00 pm »
Does anyone know, wht the designation of the fairing of this launch is?

Some kind of lengthened S-type fairing, nearly the size of the ST-type fairing, was used.

Offline pm1823

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Re: Meridian #2 launch - May 21, 2009
« Reply #10 on: 05/23/2009 06:21 pm »
Both Jonathan McDowell and the Russian Nuclear Forces project are reporting that the spacecraft was placed into a lower orbit than planned due to an anomaly with the Fregat.

There's talks in NK forum about ~3 sec early cut-off on the third stage(Block-И, not Fregate), which cause that Fregate underperformed.
« Last Edit: 05/23/2009 06:29 pm by pm1823 »

Offline anik

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Re: Meridian #2 launch - May 21, 2009
« Reply #11 on: 05/23/2009 06:50 pm »
Does anyone know, wht the designation of the fairing of this launch is?

According to http://www.novosti-kosmonavtiki.ru/content/numbers/289/16.shtml, it is 14S737 fairing with length 10.4 m and diameter 3.715 m.

Offline William Graham

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Re: Meridian #2 launch - May 21, 2009
« Reply #12 on: 05/23/2009 07:27 pm »
Is there any indication of whether the satellite will be able to correct its own orbit, and if there will be any impact on downstream Soyuz or Fregat launches. If its a problem with the Soyuz itself, could it result in a delay to TMA-15? (I don't know what part commonality there is between the 2.1a and FG)
« Last Edit: 05/23/2009 07:27 pm by GW_Simulations »

Offline pm1823

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Re: Meridian #2 launch - May 21, 2009
« Reply #13 on: 05/23/2009 08:36 pm »
Quote
If its a problem with the Soyuz itself, could it result in a delay to TMA-15?

It depends of what they really saw in telemetry...

Quote
(I don't know what part commonality there is between the 2.1a and FG)

2.1a has same engine RD-0110 with FG and different tanks and control system.

« Last Edit: 05/23/2009 08:39 pm by pm1823 »

Offline patchfree

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Re: Meridian #2 launch - May 21, 2009
« Reply #14 on: 05/25/2009 09:39 pm »
Quote
If its a problem with the Soyuz itself, could it result in a delay to TMA-15?

It depends of what they really saw in telemetry...

Quote
(I don't know what part commonality there is between the 2.1a and FG)

2.1a has same engine RD-0110 with FG and different tanks and control system.



OK but the engine on the graph is the RD-0124 (14D23)
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Offline pm1823

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Re: Meridian #2 launch - May 21, 2009
« Reply #15 on: 05/26/2009 11:11 am »
Yes, I know, but it's only scheme of new Block-I, that I found. I hope, it's not confused anyone, 'coz engine name is signed.  :D
« Last Edit: 05/26/2009 11:16 am by pm1823 »

Offline SiberianTiger

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Re: Meridian #2 launch - May 21, 2009
« Reply #16 on: 05/26/2009 11:27 am »
Ground sightings of the Meridian 2 launch:

The contrail's footage taken in Kazan:



Three views from Petrozavodsk (source 1, source 2)

Next, a shot made from Vologda (source)

« Last Edit: 05/26/2009 11:29 am by SiberianTiger »

Offline SIM city

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Re: Meridian #2 launch - May 21, 2009
« Reply #17 on: 05/26/2009 01:37 pm »
http://www.russianspaceweb.com/meridian.html#2

Second Meridian satellite flies

Russia launched its second satellite from the Meridian series of military communications satellites. The Soyuz-2 rocket lifted off on May 22, 2009 at 01:53 Moscow Time (00:53:33 Moscow Decree Time) from Pad 4 at Site 43 in Plesetsk, carrying a second Meridian satellite. This launch was previously expected at the end of 2008 and in April 2009.

According to the official Russian sources, the launch vehicle successfully delivered the satellite into orbit at 04:13 Moscow Time. The spacecraft established contact with the ground and its systems worked well, the Russian space forces reported. However, western radar found the satellite and the Fregat upper stage on the 275 by 36,473 and 191 by 36,377-kilometer orbits. Independent observers noticed that these parameters, especially perigee, were considerably lower than those of the original Meridian satellite, inserted into a 1,009 by 39,818-kilometer orbit. The perigee was also within the altitude, where the friction of the upper atmosphere could quickly degrade the satellite's orbit, unless maneuvers to raise it were taken urgently.

A respectable source on the Novosti Kosmonavtiki forum reported that preliminary data indicated the shutdown of the third stage of the launch vehicle three seconds earlier than planned. The Fregat upper stage apparently made an attempt to compensate the underperformance of the third stage with its own extended burn, until it run out of propellant.

Still, on May 25, 2009, the satellite's manufacturer ISS Reshetnev (former NPO PM) issued a press-release declaring the launch a success. According to the company, the Meridian satellite entered, which was close to planned. It apparently indicated that the spacecraft had enough propellant to enter operational orbit.

The announcement also said that the deployment of solar panels and antennas was successful and one hour and eight minutes after the launch, the spacecraft established its orientation toward Earth. All onboard system performed without problems and engineers of ISS Reshetnev initiated checks and tests of the satellite before transferring it to its customer for operational work during the spacecraft's planned lifespan, the company's statement said.

According to the head of ISS Reshetnev Nikolai Testoedov, a projected lifespan of the Meridian satellite had been extended to seven years and a number of transponders onboard the spacecraft had been increased, enabling it to "replace" 12 satellites of the Molniya series and save considerable government funds.


Offline Stan Black

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Re: Meridian #2 launch - May 21, 2009
« Reply #18 on: 05/26/2009 06:09 pm »
Yes, I know, but it's only scheme of new Block-I, that I found. I hope, it's not confused anyone, 'coz engine name is signed.  :D

Diagram can be found here
http://www.cosmopark.ru/r7/krch1.htm

Offline Nicolas PILLET

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Re: Meridian #2 launch - May 21, 2009
« Reply #19 on: 06/09/2009 04:57 pm »
Launch gallery (a little late due to technical problems, which prevent me from uploading the video, but you already know it)

http://www.kosmonavtika.com/lancements/2009/21052009/21052009photos.html
Nicolas PILLET
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