Crew Photos – March 2nd

Engineering check seen from the Optnivent glasses


Arthur and Mouadh on the crash site


Taking off the captor


Arthur and Mouadh besides the seismometer


Lettuce growing in the Vegidair

Journalist Report – March 2nd

Journalist report, 03/02/17 – Sol 18: Completing tasks.

Today’s EVA had two purposes: find what happened to the atmospheric balloon we lost yesterday, and recover the seismometer, now running for more than two weeks. Xavier was EVA leader, and decided to lead a new human factor experiment, following up on his emergency procedures research: the EVA was conducted without any radio contact, using scuba diving gestures to communicate, and limiting drastically communications. This situation is of course caricatural: a scene in which every member of the team would have a radio failure, is not only very unlikely, but also the scenario where it happens immediately after leaving the airlock and keeps going on during the whole EVA does not exist for the simple reason that real astronauts would just have moved back immediately into the station, aborting the EVA.

The point was here to exaggerate the problem, in order to test the worst-case scenario, at every stage of the EVA. In this kind of situation, having had a strong briefing before going out is essential, to minimise the need of communications afterwards. It is also crucial to always watch his teammates, not to let somebody alone, or to lose visual contact. This is why moving in the vehicles also required frequent stops, to check if everybody was following, a thing we usually do by radio. The engineering check was done assuming that the crew received today’s habcom, Victoria, but only her, in order not to forget something. Louis, staying in the hab also could remotely monitor what Arthur was seeing, from his Optinvent glasses.

After having completed every task they were asked for by Victoria; Xavier, Arthur and Mouâdh first went North by foot to check the balloon site. They only found the rope and its attach, supposed to be inside the balloon platform. This is how it failed: the connection between these two piece must have been too weak to endure the wind force. The irony is that the camera we removed yesterday was precisely in this gap, so that without removing it, we might have preserved both of it. But I’m not sure that Xavier, the video camera owner would have liked to give it another try… To end with the EVA, my three colleagues had no trouble removing the seismometer from its hole. They came back early, after one hour outside.

The afternoon was quiet, as everybody was working on his final reports or productions. Tomorrow is (already ?) our last day in simulation, so that we were all focusing on trying to end our work properly. It is strange to realise how short the simulation seems to have been, whereas we are already feeling at home in this little hab already. It surely will be strange to leave on Saturday to go back to reality.


Louis MANGIN, crew journalist MDRS 175

Commander Report – March 2nd

Dear Earth,

There is no such thing as silence.

Sometimes it is good to take a break from all the noise inside the
Hab: we are constantly surrounded by the deep hum of the diesel
generator, the regular drop hammer of the water pump, the proverbial
quarrelling of the card game (“why on earth did you throw away that
ace of spades?!”), the occasional scratch of the walkie talkies, the
hunger-triggering rotation of the bread machine…
That might partly explain why Xavier wanted to perform Sol 18’s EVA
with the radios turned off. Other explanation: it allowed him to take
notes on how natural is the set of gestures we established, based on
scuba diving. The EVA had three main objectives: first, I tested the
newly-implemented vocal recorder of the AR glasses during the
engineering check, given that we could not transmit the measurements
to the Hab.

Then, Xavier took the lead to investigate the area where the balloon
was last seen. Still silently, Mouâdh, Xavier and I recovered the
anchor and the rope that had visibly been violently pulled out of the
balloon’s platform. No more evidence have been found on the balloon’s
destiny, but it is likely to have fallen down at night when the air
inside could no longer be heated by the sun. Given the wind direction
yesterday, it must have gone south of our settlement, many miles away.

The final task we performed was to recover the seismometer before the
end of the mission. The briefing we did yesterday was precise enough
to allow us to pack everything silently and go back to the Hab with an
ATV and a rover. In the end, it appears that we were perfectly able to
communicate instructions with gestures only, if we were correctly
prepared. Normally in such a situation with all the radios off, the
safest decision would be to abort the EVA and go back to the Hab, but
it seemed important to test it and improve our protocols.

At noon we figured out that we had just enough dehydrated eggs left to
mix them with flour, sugar and milk, following the traditional French
recipe of crêpes. The psychological effect was overwhelmingly
positive, in these times of end-of-mission food shortage.

The afternoon was very calm, everyone working on his part of the
Mission Summary Report, listing the results of our experiments and
repairs. It seems that we have been very inspired: now we have to cut
half of the text to meet the format required!

Ad Astra!
Arthur Lillo
Commander of the silent Crew 175

GreenHab Report – March 2nd

Green Hab Report  – Sol 18
Report written by: Victoria DA-POIAN (Crew Biologist)

Date : 03/02/2017

Functionality: The heater in the green hab is working well. Today was a very sunny day. I checked the temperature in the GreenHab this morning. It was around 35 Celsius degrees around 10:15 AM while the temperature in the tunnel was around 7.6 Celsius degrees. I switched on the cooler (on stage 2).

The GreenHab temperature was 19 Celsius degrees at 6:00PM while it was 8 Celsius degrees in the tunnel. I watered the seedlings this morning and I did this afternoon.

Status: The existing seedlings in the greenhab are continuing to grow well. There are spinach, lettuce, radish, and beans growing very well in the small pots. I planted a new lettuce today.

The Vegidair is functionning well. The pump is working well (it was making strong noise in the morning, so I added water). The day/night cycle seems to have some issues, we wll investigate that.
Unfortunately, there will not be a new crew to take over after us so I am worried about this.

Science Report – March 2nd

Science Report

Sol 18

Experiment: Optinvent AR Glasses
Person filling in the Report: Louis Maller

Today the glasses were taken on a non-verbal EVA, worn by Arthur Lillo. They were connected to my computer in the Hab by LAN, so I could access to the glasses camera, and the files inside the glasses.

Today’s EVA was to be done without any radio comm from and between the EVA buddies (they could only receive instructions from the Hab). So the glasses were quite useful as they allowed to monitor their activities, see what they were doing.

A screenshot of the image was used to get to know the level of water inside the tank.

Head movement detection was used to record a certain amount of information using the voice record function. I was able to access the files from inside the hab as soon as they had been recorded (or as soon as the glasses were back in range), so that way we had information of the level of the two trailer tanks, gasoline tank, propane, and state of Deimos with only a slight lag.

When the crew went to check propane, the signal was lost. When they came back, we instructed the glasses’ bearer to nod in order to relaunch AirDroid. It worked, so I regained signal and was able to access to the data that had been stored.

From inside the hab it was quite a success.

I could see on the camera that Arthur was frequently using his glove in front of his face, in order to better see the screen of the glasses, so the visibility of the notifications is still an issue. Arthur told me that indeed it would have been nice to have a continuous signal on the screen indicating that the recording is ongoing.
There are a few instances when the recording ran to its maximum time (5:17).

The movements necessary to launch these actions are also new to him, so sometimes I think he moved maybe with too much or too little amplitude, and of course being in the helmet and wearing the backpack make some of these movements difficult. His feedback is that the movements should be easier to do inside the helmet. The difficulty with that is that the movement should not be so easy to do that they would be done accidently all the time. I think also what lacked is training to properly do the movements in an efficient way.

The glasses are connected to a portable battery charger, so they should not run out of charge at all during the EVA, nor display the battery alert prompter at any time.

They came back near to the hab at around 1000 and I could regain connection with the glasses, see through the camera and download files.
The quality of the recording is all right, even though the reverberation in the helmet can make it hard to understand, and it is worse when there is wind.

Experiment: Seismometer
Person filling in the report: Mouadh Bouayad
The seismometer has been recovered today from its place, and the hole it was in filled in. The data was recovered with it and analyzed in the days to come.

Experiment: Solar Balloon
Person filling in the report: Simon Bouriat
The EVA today recovered the balloon’s anchor, and the part of the platform to which it was attached. We can therefore conclude that it detached from the rest of the platform, as the balloon drifted away.

Sol Summary – March 2nd

SOL: 18

Person filling out Report: Louis MALLER, XO

Summary Title: The Artists

Mission Status: successful silent EVA in the morning, all systems go, work on experiments ongoing

Sol Activity Summary: EVA, science work on different experiments, sport

Look Ahead Plan: Tomorrow we will go for a last EVA, debrief the mission, and prepare to exit the Sim.

Anomalies in work: gave up on the 3D printer, clock in the living quarters not functional

Weather: sunny, no wind

Crew Physical Status: Injured crewmember conditions stable, one crewmember with a slight headache, rest of crew feeling well

EVA: non-verbal EVA for balloon debris recovery, AR glasses tests and seismometer recovery – success

Reports to be filed:
– Commander report
– Operations report
– Journalist report
– GreenHab Report
– EVA #17 report
– EVA #18 request
– Science Report

EVA Report – March 2nd

EVA #17

Crew members (3) : Xavier Rixhon (EVA leader), Mouâdh Bouayad and Arthur Lillo (EVA buddies)

Location: Hab surroundings and South of the Hab (12N 518500, 4250000)

Vehicules : Rover Deimos and ATV 350 #3
Time : departure at 09:00 am and back at 10:02 am

Duration : 1 hour

• Understanding why the balloon flew away shortly after EVA#16
• Searching for balloon crash site and potentially retrieving the platform with the equipment
• Unburying the seismometer from its working place and bringing it back to the Hab
• Even if we take the radio switched ON with us, as soon as the engineering check is completed, we’ll try to complete all these tasks staying silent and using hands motion inspired by scuba diving
• Using AR glasses to record the different data collected during the EVA Engineering Check


Before getting through the EVA summary itself, I’d like to say I’m pretty proud of my team. Indeed, we got into the main airlock, to start the depressurisation, right on time : 9:00 am sharp.
As explained in the EVA request, this EVA was one of the kind. As soon as we exited the main airlock after depressurisation, as the current leader, I indicated to my two fellow EVA buddies that the microphone of the radios were down. This marked the starting point of the “radios down” simulation. All along this one hour EVA, no word will have been said. The only way to make us understood by the others will have had to be hands gestures, mainly inspired by scuba diving. As expected, patience and calm would have been the key words of this EVA.
In a safety concern (we never left one man alone behind), we stayed together during the traditional pre-EVA engineering check. Guided by Victoria giving her instructions through the radio earpieces, we went around the Hab to collect the relevant data. As we couldn’t forward them straight away to Victoria, Arthur, wearing the AR glasses, used the voice recording functionality to record the different values and save them in sound files. Meanwhile, inside the Hab, Louis Maller was downloading these files on his personal computer to give the information to Victoria afterwards. Eventually, she could fill in the Engineering Checklist table (for Operations Report purposes). Furthermore, Louis tested the screen shot functionality. For instance, he screen shot what Arthur was seeing during the static tank water level check. This operation was a great success since the engineering check has never attempted this way. On one hand, we didn’t take that much time to complete the check. On the other hand, we took the opportunity to test the AR glasses as never before.
Once we were done with the engineering check, we headed to the site where the balloon had been attached yesterday before flying away. We found the stone anchor built up by EVA#16 team and the loose rope which was keeping the balloon on site. From the anchor, the rope headed South where the balloon maybe flew away. After understanding this, we walked around the anchor site though, hoping to find a torn apart balloon lying on the ground. Unfortunately, after few minutes, we figured out that our little friend was gone once and for all.
Back to the Hab, I gave the leadership to Arthur before he drove the ATV ahead of Mouâdh and I on the Rover Deimos. We headed to the seismometer site (South of the Hab). Once we got there, Arthur gave the leadership to Mouâdh who had already briefed us how to proceed to retrieve the seismometer : Arthur pulled up the battery and I took care of the seismometer while Mouâdh was unplugging the different wires and packing them up in the box with the acquisition system. Then, we put the equipment back in the rover before filling the hole which had been dug at Sol 5. After this task being completed, Mouâdh gave me the leadership back for the ride to the Hab. To end this EVA as it had started, we listened carefully to the final check instructions given by Victoria.
This short EVA was great : not only because we performed the task as expected but mainly because the messages between EVA participants was clear and efficient enough to make us spend only one hour outside to do everything. The rotating leadership worked perfectly and everyone took his role seriously. We came up with creative gestures so no doubts would remain in our communications.
In conclusion, despite the bulky life support system, the fog on the helmet glass and procedure (quite simple though) to follow, we managed to reach our objectives without speaking up at all. In other words, this means that a real radio failure doesn’t specially jeopardise an entire EVA if the participants are well prepared and briefed.