Author Archives: julien

Floating ahead…

Wow, a world record! Congratulations, Samantha! An Italian woman is now the record holder for the “longest female presence in space”! Even longer than any cosmonaut, and the Russians have a history of long space missions! She is also longer than the previous record holder Suni Williams, who has stayed 195 days in space on a single mission… Now Samantha is “one step ahead”!
Servus Samantha, the comic for you is finished. Credits: DLR

Servus Samantha, the comic for you is finished. Credits: DLR

This event was reason enough for our Ground Controller David Hagenstroem to draw a memorable comic. Of course we wanted Samantha to know that we are aware of her new ‘power’ – that is why we wanted to bring her the comic on the Space Station. Should not be a big problem, right? Well, “In principle, no”. But a space station is, even in our times of ubiquitous Internet a special place, for space enthusiasts at least. I still remember when a NASA colleague asked me if I wanted to send an image to the Space Shuttle computer while I was getting ‘On The Job Training’ in Houston, USA. You bet!! It was a simple key-press in reality but for space enthusiasts like me it was the most amazing thing in the world. In the following weeks I got on everyone’s nerves recounting my story over and over…
The Daily Summary on Monday with David's comic. Credits: DLR

The Daily Summary on Monday with David’s comic. Credits: DLR

Back to the comic: In principle, astronauts can receive emails on the Station. But for your email to actually arrive in their inbox, you need to be on a special list that the astronauts manage themselves. Working at a control center we could of course use this communication channel, but we chose another way. Every day the crew receives a “daily summary” that is prepared on ground and radioed up. This document includes comments on the day’s schedule, various Space Station parameters and a question-and-answer section. We sometimes add a caricature, a riddle or another bit of fun to make our colleagues in space start the day with a smile. Astronauts are encouraged to study the Daily Summary in the morning so that any questions or comments they have can be asked during the daily planning conference. We placed the comic in the Daily Summary and added a few notes. Pretty soon we heard Samantha’s friendly voice during the Daily Planning Conference saying she was pleased about it … Now I am afraid that I must go seriously talk to David and warn him that he will not make many friends, if he is permanently talking about how he once sent a drawing to space …

Don't panic

12/06/2015

I’m a plumber by profession

If I had some more free time – oh how I wish…! – if I had more free time and I had finished my home construction, landscaped the garden and my children were grown-up and no longer require my parenting, then I could finally read up on game theory. Or maybe learn to play the guitar, or drum. I might investigate what is happening in the field of electron microscopy – maybe even do a little more sports? Sitting on the sofa and try hard to not do anything might be an option too.
Columbus module. Credits: ESA/NASA

Columbus module. Credits: ESA/NASA

In all likelihood I would run out of time due to sheer recreational stress… The situation on the Space Station is comparable these days: Three of the astronauts on the International Space Station have had their return to Earth delayed so we unexpectedly had additional crew time for them. This does not mean that Samantha and company were finally able to fully enjoy the great view of the Earth, because here at the control centre we have a long wish list of things that we want done. We recently moved to Node 3 the Permanent Multipurpose Module (PMM), which was designed as a transport container for the Space Shuttle and left attached to Node 2 after the end of the Shuttle era. This move offers extra storage space so that Node 2 has an extra docking port for future visiting vehicles. We also finally exchanged the old-style video tape recorder in Columbus for a modern hard disk recorder. Water valve fixing Samantha faced exchanging a water valve, which had not been functioning as expected for some time now on Friday: we put the extensive activities on her timeline and it kept her busy. Samantha had to start work the day before by reconfiguring the Columbus module as the water valve is hidden behind panels next to the hatch and blocked by an experiment rack. So Samantha first had prepare the “Express rack 3” to tilt it away to enable access to the valve. Many cables and pipes had to be removed for power, nitrogen, as well as the venting and vacuum lines, video connections and data lines.
Anna Pateraki on the STRATOS console supporting the work from ground. Credits: DLR

Anna Pateraki on the STRATOS console supporting the work from ground. Credits: DLR

On Friday, Samantha had to tilt the rack forward into the cabin, which was easy to do in weightlessness. She now had access to the area where the water valves are in Columbus and could remove the Nomex cover. We were now looking into Columbus’s innards. Columbus needs to be actively cooled as some hardware produces heat which is removed by water. In addition the air of the module must be cooled: air conditioning in space! Lastly humidity is an issue, astronauts sweat like everyone else and the water in the air must be kept within limits. Condensation would be a serious problem, especially in areas where electrical current is present. Therefore we use our cooling-water system to force condensation in a special device that cools the air and dehumidifies it before sending the collected water to the American recycling system. Columbus has two water pumps to do all this and various mechanisms to adjust the temperature of the water coupled with two heat exchangers that transfer absorbed heat to the outer ammonia cooling circuit, from where the heat is radiated into space. Of course that requires a lot of valves, for water shutoff, mixing or bypassing, and today Samantha was looking to replace the cleverly-named “Water-On-Off Valve 6” which we call WOOV6. Naturally the Columbus Control Centre made sure no more water flowed through that valve – in addition we allowed it to warm slightly: we didn’t want to ask the Italian astronaut to put on winter gloves for this operation. With the Express Rack 3 tilted, normal air circulation was disrupted – meaning the smoke detectors could not monitor all areas of the module and the astronauts had to be “prime for smoke detection”.
Canadian astronaut Chris Hadfield also did some do-it-yourself in Columbus. Credits: NASA

Canadian astronaut Chris Hadfield also did some do-it-yourself in Columbus. Credits: NASA

With these prerequisites Samantha was “go” to start the 28-page procedure to replace the valve. For the next four hours the astronaut acted as Do-It-Yourselfer: she inspected the new WOOV, set up her workplace, investigated the old WOOV and took pictures of it, unplugged it in order: electric connections, water pipes – and eventually started to pull it out. Once installed she put in the new valve, insulated it and turned it on… In between there was a brief but hectic moment when Sam informed us that one of the quick-release fasteners was leaking. Water floating about the cabin is always something that we do not appreciate at all. We quickly got the situation under control though and she mopped up the spilled water. It was already evening in Europe before we could finally switch on the new valve for the first time from ground control. We let out a sigh of relief together with the engineers in Turin and Bremen – to misquote Galileo Galilei: “And yet it moves!” Well done – summer is here and it is important that cooling systems work… 😉

Don't panic

10/06/2015

Samantha overtakes Sunita as holder of longest spaceflight for women

Sunita Williams during spacewalk. Credits: NASA

Sunita Williams during spacewalk. Credits: NASA

Since Saturday 6 June at around 16:21 CET (14:21 GMT) ESA astronaut Samantha Cristoforetti holds the record for the longest single mission for a woman. NASA astronaut Sunita Williams previously held that record with 195 days after Expedition 33 on the International Space Station. Sunita remains the record-holder for number of spacewalks done by a woman (seven), including the most time spend on spacewalks in total for a woman at 50 hours, 40 minutes. Samantha’s Futura mission was extended after a problem with a Progress supply ferry. She already broke the record of longest single mission for an ESA astronaut last week.

Don't panic

06/06/2015

Moving Leonardo

Update: Leonardo is now firmly in place attached to the Tranquility node.

Don’t panic! The International Space Station is getting some redecoration as the ~10 000 kg Leonardo module will be moved to a different location today.

The Italian-built Leonardo, also known as the more mundane Permanent Multipurpose Module, will be moved from the Unity module to the Tranquility module from 14:00 CEST. The Canadian-built Canadarm2 will grab Leonardo and transfer it to its new berthing place.

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They closed the hatch between Leonardo and Unity yesterday and made sure there were no leaks. The partners that run the International Space Station are moving Leonardo to make extra room for visiting cargo ferries. Two types of vessels can visit the Space Station, spacecraft that dock automatically and ferries that need to be berthed using the Station’s robotic arm. Moving Leonardo will free up an extra docking port for spacecraft that require berthing with the robotic arm such as Dragon, Cygnus and the Japanese HTV.

Leonardo

Leonardo arrives at International Space Station in Space Shuttle cargo bay. Credits: ESA/NASA

Leonardo arrives at International Space Station in Space Shuttle cargo bay. Credits: ESA/NASA

The Leonardo module has an interesting history and is one of the reasons Samantha is currently on the Space Station. The module was designed and built in Italy by the Italian Space Agency and Thales Alenia Espace for use on NASA’s Space Shuttle. It’s first name was Leonardo Multi-Purpose Logistics Module as it performed a number of tasks in the Shuttle’s cargo bay. It flew to space and returned seven times between 2001 and 2010.

On its eighth spaceflight it was left permanently attached to the International Space Station in 2011. Since then it is used for storage and as extra space. Its name was subsequently changed to Permanent Multipurpose Module. In return for building and supplying Leonardo and other Multi-Purpose Logistics Modules, NASA agreed that the Italian Space Agency would send astronauts to the International Space Station. One of these astronaut flights arranged under this barter agreement is being filled by none other than Samantha Cristoforetti.

Watch the relocation live on NASA television from 14:00 CET today.

Don't panic

27/05/2015