Update on final water transfer to the ISS
This sent in earlier this afternoon by ESA's Mike Steinkopf at ATV-CC:
Yesterday, in the late afternoon, the last remaining uploaded water was transferred to the ISS. Crew emptied ATV water tank No. 3 by performing a water transfer into 4 EDVs (Russian water containers; 22 litres each; total 84 liters).
After emptying the ATV No. 3 water tank, a Bladder Integrity Check was performed in order to ensure that this tank can be filled again with liquid waste (pumped over from the ISS) in the near future. Note this was done already for the other two ATV tanks. This means that from now on, all ATV water tanks can be used for liquid waste filling.
Presently, Tank No. 1 is already filled with 196.7 liters of liquid waste and for MCI (Mass Centre and Inertia) and CoG (Center of Gravity) reasons this tank will be filled first before ATV tank No. 3 will be used.
Next liquid transfer (of another 3 EDVs; about 66 liters) into tank No. 1 is planned for this Wednesday.
ATV-4 mission report 23 August
The ATV hatch was reopened on 23 August after being shut for a week while Albert Einstein was configured for the Russian EVAs on 16 and 22 August.
Planned events in the last week of August: Water transfer from ATV's tank 3 (84 litres, leaving Tank 3 empty), O2 transfer, Air transfer and, on 31 August, Reboost No. 2, set for a 0.3 m/sec speed boost.
Russian cosmonaut Alexander Misurkin during EVA, 16 August 2013. In the background, ESA's ATV Albert Einstein can be seen docked to the Russian module.
Note as always: All dates/timings below are forecast only and are subject to change as this is a continuing, dynamic mission. Time below indicated in UTC.
ATV-4 hatch open again
After some some quiet time at ATV-CC, today (Friday, 23 Aug) was again a hectic day as the ATV hatch was opened again after being closed prior to two Russian spacewalks. Mission Director Mike Steinkopf sent this update some minutes ago:
The crew successfully completed the inner hatch volume leak check (between the ISS hatch and ATV hatch) and opened first the ISS and – after further pressure equalization (pressure in ATV and in the ISS must be equalized) – the ATV hatch was opened at about 11:51 GMT (13:51 CEST).
During the early afternoon, the crew transferred liquid waste from a US recycle tank into ATV's tank No. 1 (about 21.55l).
Crew also just reported that drinking water transfer (about 66 liters) from ATV tank No. 3 into three specific water containers (called EDVs) was successful.
This finishes another long day of operations.
Mission quiz: Answer 1 – Where does that water come from?
Here's the correct answer to yesterday's first question in our Mission Quiz ("Name the two European sources of the two different types of H2O that ATV transports to the ISS") courtesy of the ATV Cargo specialists:
- For American water, we use the Pian Della mussa source that is a lighter water with a mountain source
- For the Russian water, we use the Regina Margherita source that is close to Turin (Grugliasco/Collegno) and contains more natural minerals.
Here an abstract (in Italian, only):
L'acqua destinata agli astronauti è la stessa che bevono i cittadini torinesi solo che quella inviata agli americani è estratta dal Pian della Mussa e raccolta dalla centrale di Venaria, ed è quindi un'acqua montana molto leggera. Quella dei russi proviene invece da pozzi dal contenuto minerale naturale situati nei pressi di Collegno.
Details (also in Italian) via SlideShare
Herewith, we're delighted to present the results of judging of the submissions sent in via Twitter and the blog! (Note that our judges felt that it was important to be a fully accurate as possible in the answer...)
Congratulations to the winner, Georg Balmer, with the the first, best response:
Posted in ATV blog 15:58 15.04 by Georg Balmer
The water that ATV delivers to the ISS is delivered by the "Società Metropolinata Acque Torino", the Metropolitan Water Company of Torino, and comes from two different sources near the Italian city of Torino: spring water from "Pian della Mussa", meeting the American standards, and water with higher mineral content, as required by the Russian standard, from wells in the region of Collegno.
Catching up with ATV
André Kuipers in ATV-3. Credits: NASA
We're approximately half-way through the ATV-3 mission, so it's a good time to provide an update on what's been happening with Edoardo Amaldi, and what's planned in the next few months.
Overall results? Here's a quote from a recent email report to the ATV community sent by ESA's Mission Manager Massimo Cislaghi:
"ATV Edoardo Amaldi is fulfilling its mission in an excellent manner -- and is completing all tasks inherent to its mission to the ISS."
Now, let's look at the numbers. As of 20 June, ATV has performed the following ISS servicing activities:
- All 2200 kg of dry cargo have been transferred to the ISS (and ~592 kg of trash have been loaded)
- 1 tank of air (~ 33 kg) has been emptied into the ISS atmosphere (the two other gas tanks containing O2 are waiting for the same operation)
- Slightly more that the half of the potable water (~154 litres) has been transferred to the Russian ISS segment tanks
- ATV has performed five ISS orbit reboosts and one ISS attitude control manoeuvre (to facilitate a Soyuz docking in mid-May), burning ~1450 kg of propellant
- ISS refuelling operations performed on 19 June have allowed to transfer more than 800 kg of propellant inside the FGB "Zarya" tanks
(For details on bringing the ATV power chain back into full operation, scroll to bottom of this post.)
Massimo ended his note with: "Thanks to all of you for the contribution given to the ATV programme in general and Edoardo Amaldi in particular!"
Now, let's take a look at recent activity (click on 'Continue Reading' for full post). (more…)
ATV-3 makes first water delivery to ISS
Yesterday, 9 April, the first ATV water delivery to the ISS took place.
The crew filled three EDV (Russian water containers; 22 litres each) using a Pump Unit located in the Russian Service Module (to which ATV is docked) and connected via hoses through the ATV Water Control Panel to ATV's Water Tank No. 1.
"Sixty six of the of 280 litres available in ATV Water Tank No. 1 were successfully transferred," confirms ESA's Mike Steinkopf.
We bet tap water from the city of Turin, Italy, never tasted so good!
Nespoli performs hot-swap of faulty valve on Columbus
Nice update today in the main ESA website on the 27 February in-orbit replacement of a faulty water valve in the Columbus lab's Thermal Control System, which cools all the equipment and scientific payloads in the orbiting research module:
ESA astronaut Paolo Nespoli removes failed valve in Columbus 27 February 2011
A joint effort is combining sophisticated engineering analysis on the ground with old-fashioned hands-on work in space after ESA astronaut Paolo Nespoli undertook the complex installation of a replacement water valve in ESA's Columbus science laboratory.
Full article via ESA