View Full Version : Russian Progress cargo ship

2015-Apr-28, 09:36 AM
The latest Progress cargo ship to the ISS has hit a snag. Read all about it.


The liftoff of the Soyuz-2-1a rocket took place as scheduled on April 28, 2015, at 10:09:50 Moscow Time (3:09 a.m. EDT, 07:09 GMT) from Pad No. 6 at Site 31 in Baikonur. The launch vehicle carried the 7,290-kilogram Progress M-27M spacecraft bound to the International Space Station, ISS. Following a standard ascent, the spacecraft separated from the third stage of the launch vehicle eight minutes 45 seconds after the liftoff.

Rendezvous antenna issue

Following the separation from the launch vehicle, the Progress M-27M successfully deployed its power-generating solar arrays and a trio of communications antennas. However, the mission control in Korolev was not able to confirm a successful opening of a pair of the Kurs rendezvous antennas onboard the vehicle. As a result, the mission was immediately switched to a longer, 34-orbit rendezvous profile with the ISS, which would give ground controllers extra time to troubleshoot the issue. If they resolve the issue, the docking of the cargo ship at the station will take place around 5:03 EDT on April 30, NASA said.

2015-Apr-28, 10:59 PM
Updates on the Progress cargo ship. Problem has not yet been solved.


Accoding to NASA, at the very end of the communication window, Russian ground controllers sent commands to the Progress to stop its spin, but had no chance to see any effect from the action. The fourth and final communication session on April 28 also produced no visible results.

Next opportunity for Russian flight controllers to communicate with the spacecraft would come on April 29, 2015, at 03:50 Moscow Time during a 15- or 16-minute window, TASS reported.

2015-Apr-29, 02:21 AM
I had no idea this occurred. Thanks for the update.

2015-Apr-29, 06:53 AM
Video of Russian cargo ship spinning.


2015-Apr-29, 08:45 AM
It's like that programme I saw yesterday. So Bender threw away some of his swag to null his rates.

2015-Apr-29, 10:27 AM
We miss you, Neil Armstrong.

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2015-Apr-29, 10:30 AM
The cargo ship is running shot of fuel and might be lost :(


2015-Apr-29, 11:40 AM
The cargo ship is running shot of fuel and might be lost :(


It can apparently use the propellant it's delivering to the ISS, stored in another tank but hooked into the same propulsion system. The continued communications problems are not looking good, though.

2015-Apr-29, 12:03 PM
From the Joint Space Operations Center at Vandenberg:

Currently, the JSpOC can confirm that the resupply vehicle is rotating at a rate of 360 degrees every five seconds.

Additionally, the JSpOC has observed 44 pieces of debris in the vicinity of the resupply vehicle and its upper stage rocket body, however, it cannot confirm at this time if the debris is from the rocket body or vehicle itself.


(That website seems to be having some DNS issues, but the page can be gotten from Google Cache.)

2015-Apr-29, 03:50 PM
360 degrees every five seconds
So 12rpm
radius is 136 cm (http://en.wikipedia.org/wiki/Progress_%28spacecraft%29)
G force is thus (http://www.endmemo.com/bio/grpm.php) 0.22 gravities at the surface.

That's probably not enough to break things inside the craft.

2015-Apr-29, 07:45 PM
Space.com is reporting that it is pretty-much game over.


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2015-Apr-30, 12:43 AM
That's the second failed resupply mission in only a few months. What's the impact, I wonder?

2015-Apr-30, 02:17 AM
That's the second failed resupply mission in only a few months. What's the impact, I wonder?
Minimal according to NASA " NASA said April 28 that none of the supplies are considered critical for operation of the station, including some spare parts and crew clothing that NASA included on the Russian spacecraft.

The loss of the Progress should not have a near-term effect on station operations. NASA said April 29 that both the Russian and American segments of the station “continue to operate normally and are adequately supplied well beyond the next planned resupply flight.”

In the same post it says the docking has been called off 😕


“Docking has been called off for the Progress 59 spacecraft,” NASA said in a brief statement early April 29, using its designation for the Progress M-27M spacecraft. “Russian flight controllers are continuing to assess the vehicle and what the plan going forward will be.” - See more at: http://spacenews.com/progress-docking-called-off/#sthash.fkSFgKw1.dpuf

2015-May-02, 11:46 PM
Russia’s Lost Cargo Ship Will Fall To Earth In less than two weeks


2015-May-07, 07:57 PM
It's down to a few hours

Russian spacecraft due to re-enter Earth's atmosphere, burn up (http://www.cnn.com/2015/05/07/world/space-russian-cargo-ship/index.html)

I'm following it on Heavens Above (http://www.heavens-above.com/orbit.aspx?satid=40619&lat=0&lng=0&loc=Unspecified&alt=0&tz=UCT).

2015-May-08, 04:36 PM
It's down to a few hours

Russian spacecraft due to re-enter Earth's atmosphere, burn up (http://www.cnn.com/2015/05/07/world/space-russian-cargo-ship/index.html)

I'm following it on Heavens Above (http://www.heavens-above.com/orbit.aspx?satid=40619&lat=0&lng=0&loc=Unspecified&alt=0&tz=UCT).

Confirmed down @ 0204 GMT on May 8, 2015


2015-May-13, 08:57 PM
The preliminary conclusions on the Progress M-27M accident.


On May 12, 2015, the State Commission led by Deputy Head of Roskosmos Aleksandr Ivanov presented its preliminary conclusions on the Progress M-27M accident. According to the agency press-release published on the same day, the launch of the Soyuz-2-1a rocket with Progress M-27M went as scheduled until the moment of separation between the spacecraft and the third stage of the rocket. The abnormal separation took place at T+526.716 seconds in flight, sending the spacecraft to an orbit with an apogee 40 kilometers higher than normal and the third stage entering orbit with an apogee 20 kilometers below normal, the agency said.

After reviewing all the materials, members of the State Commission came to a preliminary conclusion that a version of the abnormal separation had been objectively confirmed, which includes two subsequent events related to the depressurization (disintegration after the cutoff of the third-stage engine) first of the oxidizer tank and then of the fuel tank, Roskosmos said.

The agency said that the work of the Commission had been ongoing and that the final classification of the character of the cause leading to the launch failure would require in-depth calculations and theoretical studies, an additional simulation and a number of experimental works, which will be conducted.

Beginning on May 13, members of the Commission were to begin work at the sites of the companies-producers of rocket technology for determining and correcting possible causes of the accident, Roskosmos said.

The press-release also announced a new schedule of ISS missions, which was developed in cooperation with the project partners (in the wake of the accident):

Beginning of June: Return to Earth of the ISS crew;
Beginning of July: Launch of another cargo ship to the ISS;
End of July: Launch of another piloted spacecraft to the ISS;

The final conclusions of the State Commission are expected on May 22, 2015, Roskosmos said.

2017-Jan-03, 12:35 AM
They have come up with a new design to replace the Progress cargo ship.


In December 2016, RKK Energia completed the Experimental Project (Detailed Design) for a new cargo ship, which would take full advantage of the payload capacity of the Soyuz-2-1b rocket, delivering around 8.2 tons to the low Earth orbit or nearly a ton more than the mass of the Progress cargo ship series launched on previous versions of the Soyuz rockets.