Author Topic: Progress M-06M launch and docking - June 30 - July 2, 2010  (Read 81246 times)

Offline PahTo

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Re: Progress M-06M launch and docking - June 30 - July 2, 2010
« Reply #80 on: 07/02/2010 09:06 pm »

Makes sense--and good stuff.  Thanks landofgrey...

Offline mtakala24

if there only was good easy-to-understand simulation videoes of different modes, this would be more easy to explain to the general public (read: friends.)

Thanks landofgrey for your explanation :)

Offline JimO

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Re: Progress M-06M launch and docking - June 30 - July 2, 2010
« Reply #82 on: 07/02/2010 09:51 pm »

According to the same screen, 2.777 km.
[/quote]

But doesn't the same screen show a large negative R-dot at the same time? So the final 'closest point' will be considerably less.

Who can help -- remember the schematic of typical 'Progress' rendezvous maneuvers? Where did we see it?

My information is now that the abort was called before the final braking burn was performed, which also targets a direct approach to the ISS [prior to the burn, as a safety measure, there is a substantial offset of closest approach].

Without that burn, the trajectory is automatically 'fail safe' and no further avoidance maneuvers would have been required, exactly as several very well informed observers advised us.

But it still has a pretty hot approach rate for a minute or two even with a guaranteed miss distance.




Offline ralf vandebergh

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Re: Progress M-06M launch and docking - June 30 - July 2, 2010
« Reply #83 on: 07/02/2010 09:54 pm »
Hi,
I managed to capture the M-06M with the telescope just a few hours after launch, and its rocket;

http://www.startje.be//vieuw.php?qid=347203

I'm just comming in from observing the Progress after its docking abort from today. The Progress was flying about half a minute preceding the ISS. Imagery in poor seeing, results later.

Ralf Vandebergh



« Last Edit: 07/02/2010 09:55 pm by ralf vandebergh »

Offline Lee Jay

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Re: Progress M-06M launch and docking - June 30 - July 2, 2010
« Reply #84 on: 07/02/2010 10:13 pm »
The Progress was flying about half a minute preceding the ISS.

That would indicate on the order of 150 miles of separation, I think.

Offline Space Pete

From www.nasa.gov/station:

Quote
Russian and US ISS program managers will meet the morning of Saturday, July 3 to assess the next docking opportunity, preliminarily identified as approximately 4:17 PM GMT on Sunday, July 4. The Progress will conduct two engine firings tonight and another tomorrow to be in position for the potential docking Sunday.
« Last Edit: 07/02/2010 11:16 pm by Space Pete »
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Offline Zero-G

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Re: Progress M-06M launch and docking - June 30 - July 2, 2010
« Reply #86 on: 07/02/2010 11:41 pm »
Reading some very interesting comments and insights in this thread, I have some questions about the TORU screen: The screenshots that have been posted in this thread earlier on pages 3 and 4 all seem to have been taken at different times (at least the time indication in the top right corner is always different), but the rest of the parameters are always the same, e.g distance and Rdot, as if they froze. Shouldn't they be changing over time? Did the parameters freeze because of the loss of telemetry? If so, is there any indication, like a "caution" message, on the screen that telemetry has been lost and the parameters froze (apart from the fact that the parameters actually ARE frozen). Also, how could the controllers know by how much distance the Progress actually passed the ISS?

« Last Edit: 07/02/2010 11:50 pm by Zero-G »
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Offline JimO

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Re: Progress M-06M launch and docking - June 30 - July 2, 2010
« Reply #87 on: 07/03/2010 03:16 am »
Regarding issue of whether Russians can get Progress TM through TDRS, this RIA Novosti story addressed the question squarely:

   A deputy chief of the Russian Federal Space Agency Vitaly Davydov said that the cargo spacecraft would resume docking with the ISS on Sunday. "The docking is tentatively scheduled for Sunday. The docking will be carried out in the automated mode," Davydov said.
   "The orbit currently occupied by Progress s/c does not allow to control its [spacecraft's] flight and get the telemetric information from the Russian ground tracking stations, and [to get the information] from U.S. tracking stations is unreal," Davydov said, adding it would take at least 1 day to assess the situation. He added the ISS's cosmonauts had not received further directions.



Offline missinglink

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Re: Progress M-06M launch and docking - June 30 - July 2, 2010
« Reply #88 on: 07/03/2010 04:50 am »
What would be the last-last-last measure to be taken if a Progress happened to deviate from its "safe" approach trajectory in just such a manner that it pointed straight at the ISS, and all on-board and remote control efforts failed?

Boosting the ISS orbit to take evasive action?

Offline hop

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Re: Progress M-06M launch and docking - June 30 - July 2, 2010
« Reply #89 on: 07/03/2010 05:10 am »
What would be the last-last-last measure to be taken if a Progress happened to deviate from its "safe" approach trajectory in just such a manner that it pointed straight at the ISS, and all on-board and remote control efforts failed?
Brace for impact, after preparing as much as possible for depressurization, loss of control and evacuation.
Quote
Boosting the ISS orbit to take evasive action?
Not likely, ISS is too massive to get out of the way, even if it could commanded it in time. From a recent status report http://www.nasa.gov/directorates/somd/reports/iss_reports/2010/06052010.html
Quote
a one-burn ISS reboost was conducted last night at 11:20pm EDT using SM main propulsion, i.e., its two main engines. Performance was nominal. Burn duration: 4 min 7 sec; delta-V: 4.5 m/s
Those are pretty much the largest engines available.

Offline jacqmans

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Re: Progress M-06M launch and docking - June 30 - July 2, 2010
« Reply #90 on: 07/03/2010 09:24 am »
What would be the inpact on Exp-24 if this Progress can not dock ??

I'm sure there is plenty of food, but what would happen with the EVA's or other planned launches ??
Jacques :-)

Offline GoForTLI

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Re: Progress M-06M launch and docking - June 30 - July 2, 2010
« Reply #91 on: 07/03/2010 10:26 am »
What would be the inpact on Exp-24 if this Progress can not dock ??

I'm sure there is plenty of food, but what would happen with the EVA's or other planned launches ??

I haven't been able to find a detailed cargo manifest for this latest Progress.  As a starting point, from a recent ISS On-Orbit Status Report, the Progress M-06M vehicle:

Quote
carries 2230 kg (4916 lbs) of cargo, specifically: 870 kg (1918  lbs) propellants, 50 kg (110 lbs) oxygen & air, 100 kg (220 lbs)  water and 1210 kg (2667 lbs) spare parts & experiment hardware. 
« Last Edit: 07/03/2010 10:28 am by GoForTLI »
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Offline eeergo

What would be the inpact on Exp-24 if this Progress can not dock ??

I'm sure there is plenty of food, but what would happen with the EVA's or other planned launches ??

I haven't been able to find a detailed cargo manifest for this latest Progress.  As a starting point, from a recent ISS On-Orbit Status Report, the Progress M-06M vehicle:

Quote
carries 2230 kg (4916 lbs) of cargo, specifically: 870 kg (1918  lbs) propellants, 50 kg (110 lbs) oxygen & air, 100 kg (220 lbs)  water and 1210 kg (2667 lbs) spare parts & experiment hardware. 

There's a more detailed list in Daniel Marin's blog (in Spanish): http://danielmarin.blogspot.com/2010/06/lanzamiento-progress-m-06m.html, although he lists the amount of cargo as 2630 kg.

Translating:

Quote from: EurekaBlog (http://danielmarin.blogspot.com/2010/06/lanzamiento-progress-m-06m.html)

    * 877 kg of fuel for the Zvezdá module.
    * 250 kg of fuel for reboost maneuvers for ISS.
    * 51 kg of oxygen.
    * 300 kg of water for the Rodnik system.
    * 1152 kg in the pressurized compartment (GrO).
    * 266 kg of food and drinks.
    * 426 kg of cargo for the USOS (including food supplies).
    * 79 kg for scientific equipment.
    * 4 kg of fire-preventing equipment.
    * 42 kg of medicines and hygiene products.
    * 52 kg of photographic and video materials.
    * 77 kg of equipment for the Zaryá module.
    * 2 kg of equipment for the Poisk module.
    * 4 kg of equipment for the Rassvet module.
« Last Edit: 07/03/2010 10:43 am by eeergo »
-DaviD-

Offline gwiz

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Re: Progress M-06M launch and docking - June 30 - July 2, 2010
« Reply #93 on: 07/03/2010 10:56 am »
Roscosmos published the manifest as usual, but their English translator appears to be on holiday, so only the Russian version is available, and for some reason the url gives an unhelpful blank English page if you try to return to it:
http://www.federalspace.ru/main.php?id=2&nid=11420

Edit: found another page which works:
http://www.mcc.rsa.ru/progress_m06m.htm
« Last Edit: 07/03/2010 11:03 am by gwiz »

Offline Apollo-phill

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Re: Progress M-06M launch and docking - June 30 - July 2, 2010
« Reply #94 on: 07/03/2010 12:37 pm »
Spaceweather site gave this detail:-

".....The unexpected docking problem was related to the rocket's KURS automated docking system. Russian ground teams are analyzing the data and hope to come up with a solution soon. Tentatively, mission controllers expect to try again on Sunday, July 4th, around 12:17 pm EDT...."



Offline rdale

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Re: Progress M-06M launch and docking - June 30 - July 2, 2010
« Reply #95 on: 07/03/2010 01:10 pm »
Spaceweather site gave this detail:-

".....The unexpected docking problem was related to the rocket's KURS automated docking system. Russian ground teams are analyzing the data and hope to come up with a solution soon. Tentatively, mission controllers expect to try again on Sunday, July 4th, around 12:17 pm EDT...."

I'm not seeing anything new in there from what was posted yesterday?

From www.nasa.gov/station:

Quote
Russian and US ISS program managers will meet the morning of Saturday, July 3 to assess the next docking opportunity, preliminarily identified as approximately 4:17 PM GMT on Sunday, July 4. The Progress will conduct two engine firings tonight and another tomorrow to be in position for the potential docking Sunday.

Offline Cbased

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Re: Progress M-06M launch and docking - June 30 - July 2, 2010
« Reply #96 on: 07/03/2010 01:43 pm »
Reports that Progress was "rotating in an uncontroled manner", then it passed the station and moved ahead of it.

KURS did not fail. It was turned off by the automatic control system.

There has been a working group formed that conducts the analysis of the current situation.

Still enough resources on board to perform another attempt of approach and docking on Sunday.

Offline Space Pete

From www.nasa.gov/station:

Quote
International Space Station Program officials from NASA and Roscosmos met Saturday morning and agreed to proceed toward a second docking attempt for the ISS Progress 38 cargo ship on Sunday, July 4, at approximately 12:10 PM EDT/4:10 PM GMT. They will meet again Sunday morning to reconfirm the status of the space station and spacecraft systems. NASA TV coverage of the second docking attempt for the Progress 38 cargo ship to the station will begin Sunday at 11:30 AM GMT/3:30 PM GMT.

The Progress 38 conducted two successful firings of its engines Friday night to put the craft in a parking orbit around 300 kilometers from the space station. Another engine firing is being conducted Saturday morning to start the process of returning the spacecraft back to the station for Sunday’s docking attempt.

Russian specialists told program officials the cause of Friday's aborted docking was what they termed a "cancel dynamic operations" command that instructed Progress' computers to fly the vehicle past the station on its final approach for docking, as it is intended to do if the internal guidance system receives conflicting commands or commands that do not comply with its pre-programmed commands.

The Russian flight controllers said the command to cancel was caused by the activation of the TV transmitter for the TORU manual rendezvous system in the Zvezda Service Module, which interefered with the Kurs automated rendezvous system. TORU is used to override Kurs, which Progress normally uses for docking, in the event Kurs experiences a problem. The TORU TV system is designed to provide a view of Zvezda's docking target to station Commander Alexander Skvorstov, if he had to operate a joystick in the service module to dock Progress manually.

The Russian flight control team has confirmed the Kurs system operated normally and did not fail, as was initially believed. Kurs uses radio beacon signals beamed back and forth between the approaching spacecraft and the space station to measure distance between the two vehicles and the rate of closure by Progress to Zvezda.

Russian officials said the TORU system will not be activated Sunday for the second docking attempt as a precautionary measure and expressed full confidence Sunday’s docking can be conducted without any further issue.

Overnight, Russian specialists conducted a successful test with both the prime and backup strings of the Kurs automated rendezvous system on both the Progress and Zvezda. Another test of both strings will be conducted Saturday night. A final test of the Kurs system, as is always conducted during the terminal phase of the rendezvous, will be performed about 50 minutes prior to docking when Progress is 15 kilometers from the station.

In the unlikely event the prime Kurs string of telemetry fails late in the rendezvous sequence on final approach, Kurs' backup string will take over through docking. If the second string should fail, an automatic abort would be triggered, and Progress would immediately halt its approach and back away from the station to a safe distance. Multiple docking attempts could be made if needed.

The Expedition 24 crew members onboard the space station were notified by the team in Mission Control in Houston that another docking attempt will be made Sunday. They have an off-duty day Saturday and will adjust their workday schedule to monitor the docking activities Sunday.
NASASpaceflight ISS Editor

Offline Chris Bergin

What we'll do - due to the added interest - is likely start a new thread for the second docking attempt.

I'll have an article on early Sunday for the attempt, given we've got some good internal info via L2, which I'll obviously include in the article.
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Offline Space Pete

From ISS On-Orbit Status Report for 03/07/2010:

Progress Update:
Progress M-06M/38P will make another rendezvous & docking attempt tomorrow (04/07) for Contact at ~4:17 PM GMT. [During yesterday's rendezvous, the automated KURS rendezvous sequence was aborted (cause currently under assessment) by the Progress MCS (Motion Control System) between two nominal burns (Impulse-4 & Impulse-5). 38P did not perform any abort burns since it was on a passively-safe flyby path from the outset (as per ballistic trajectory design). The vehicle performed two burns last night (02/07), one at 7:28 PM GMT (DO4) of 1.61 m/s delta-V, the other at 9:27 PM GMT (DO5) of 4.77 m/s. A third maneuver is planned for today in order to set up the proper trajectory conditions for tomorrow's docking attempt, for which ISS will be in the same configuration as for yesterday's docking (same attitude, same solar array & radiators positions).]
NASASpaceflight ISS Editor

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