Author: jburk

Author: Cesare Guariniello

Purpose of EVA: Visit the regions of Beige Moon and Yellow Moon, collect samples of salts

Destination: Yellow Moon

UDM27 Coordinates:
515700 E
4254200 N

Participants: Cesare, Melanie, Mark, Samuel

Narrative: This EVA brought the crew for the first time Northwest of the habitat, in the region of The Moons (White Moon, Beige Moon, Gray Moon, Yellow Moon). After egressing the habitat airlock, the EVA crew members spent about fifteen minutes strapping and securing the spectrometer case and the geology toolbox to the ATVs. This simple activity was very instructive about the difficulties of performing simple tasks when donning bulky gloves and a space suit, being able to communicate only via radio, while always “thinking like a Martian” (for example, this means slow and accurate movements, paying attention to the safety of all crew members).

Due to the low temperature, the crew had to use the choker to start the ATVs. However, despite warming the 300, its engine quit multiple times. Since the EVA had multiple stops planned, the crew decided not to use the 300, and instead added a third 350 (vehicles used were the Honda, 350.1, 350.2, and 350.3). The ride North was quite slow, due to the presence of a delicate, expensive instrument.

Once again, the crew did not spot the unmarked road (in this case, Hwy 1572), and went further North to the end of the ATV road. This detour gave the crew the first spectacular sight: on the way back towards Hwy 1572, the crew drove through the Glistening Seas, and the position of the Sun showed how appropriate this name is. The whole plain was sparkly with reflections from gypsum crystals, which gave a sense of awe. In the middle of the Glistening Seas, the EVA crew spotted the location of Hwy 1572 and followed it towards Yellow Moon. Upon reaching the location and parking the ATVs, the crew geologist began his collection of samples, while other EVA crew members explored the area. The magnificent landscape, open to the East on the red Morrison formation, and shadowed to the West by the brown rims of Mancos shale, prompted a discussion within the EVA crew to discuss about the possibility of reaching the Martian Moons.

Due to the delays at the beginning of the EVA, the crew had to turn around after just 40 minutes in the field. On the way back, two more stops for collection of geological samples were added, before the crew stopped at Mount Nutella (see photos of the day) to climb the sand dune and look at the formations from the top of the mount. Melanie lost communication at this point, but this did not cause any problem: she was put in the middle of the ATVs convoy, and the EVA party was already enroute to the habitat. Upon returning, while Melanie refueled the ATVs and tested the 300 (which worked, since it had warmed up), and Cesare unstrapped the tools, the crew was welcomed by a new pet: the NorCal Mars Society’s rover Phoenix!! The EVA crew played with it for a little bit, before ingressing the airlock to end this astonishing EVA.

Author: Max Fagin

Purpose of EVA: Photographic survey and geological samples of the previously unexplored region to the North East of Maxwell Montes, direction radio experiment, Ham radio repeater communications testing

Destination: North East of Maxwell Montes

UDM27 Coordinates:

521750 E

4254500 N

Participants: Max Fagin, Kshitij Mall, Melanie Grande, Justin Mansell

Narrative: The region to the North East of Maxwell Montes had been indicated to us as a region that no MDRS crew had ever explored. Far be it from us to turn down a chance to go boldly where no one has gone before, we had to perform a photographic survey and bring back some samples to plan for a more detailed investigation later in our mission. And the region did not disappoint. After a 55-minute rover ride followed by a 40-minute hike, we reached the edge of a box canyon which contained a stratified cut covering 50-million years of the Jurassic, so perfectly formed it could be in a textbook (see our photo of the day). The long range of the EVA meant we could only spend 45 minutes on site collecting samples and taking photographs, but we have resolved to return to the region before our mission is over. Next time, we will come armed with two tools we didn’t have this time: 1) Our crew geologist, 2) A mapped out route for getting to the bottom of the canyon to see prehistory up close.

Throughout this EVA, we communicated both through the regular MDRS commercial radios, and through the Hanksville ham radio repeater. Both communication methods had dropouts, but the dropouts rarely overlapped, serving as an effective backup to each other as a way to maintain contact with the hab and the EVA team. This exact solution cannot be implemented on Mars, but a ham radio repeater is a fair analog for the site-to-site communications loop in place through a synchronous communications satellite. A colleague once told me that you can fix any problem with a spacecraft as long as you still have communications and power, and future Mars explorers will likely rely on multiple redundant modes of communication to keep that truism true.

Given our experience from the previous EVA, we elected to make this EVA with the 4 exo-suits, rather than the traditional MDRS suits. They met and exceeded our expectations for remaining comfortable for a long EVA, and the rest of the crew are eager to try them out. Having zero load on our shoulders is a welcome relief, and the limiting factor was really how long you could have your head in the suit without scratching your nose or taking a drink.

On the latter matter (thirst), we tested out a partial solution. It is our crew’s policy to carry a case of water with us in the rover’s trunk on EVAs to treat any case of dehydration. Drinking such water would be breaking sim as we would have to doff the suits to drink it. However, the ability for an EVA suit to provide the occupant with a drink without doffing the suit is already existing technology, we simply haven’t implemented it at MDRS yet. The neck ring design of the old MDRS suits makes the use of a camelback a bit ungainly, but the exosuits are perfectly shaped for it. By feeding the tube of my camelback through the vent in the suit and securing it with a twist tie, I was able to keep the port within easy reach of my mouth for the entire EVA. This solution can’t be permanent, as it would require MDRS participants to share camelbacks, but I have extensively photographed the solution and will be taking it back to the NorCal Mars Society as a proposal to try in future suits (perhaps if MDRS participants wanted to bring their own camelback). I certainly appreciated it.

On the way back, Kshitij and Melanie dropped us off at a point where we had identified on the way out, and proceeded back to the hab. Justin took out his direction radio beacon, and I faded into the background as he began his “lost astronaut” experiment. Using a Yagi antenna to determine his bearing on the hab, he began walking in the general direction while I shadowed him with a gps to check his route. After stopping 3-4 times to recover his bearings and making his way through a narrow canyon where the signal was interrupted, we climbed a hill and spotted the hab directly ahead of us in the distance! This was just a preliminary test, as we both had a fair idea of where the hab was, but on future EVAs, the test will become more challenging, eventually culminating with the test subject starting from a location where they don’t know their bearing on the hab.

Extra commendations to our EVA controller Cesare, for managing three radios while we were out and about, and finding time to suit up and join us for a 1 hour “get ahead” engineering EVA that we began when we found ourselves back at the hab an hour earlier than expected.

Note on our route: We misread the map legend indicating which roads were for PEVs (the rovers) and which were limited to ATVs. We took the rovers north along Cow Dung Rd, East along Galileo Rd and stopped where the foot travel only section began at the intersection of Cactus Rd. and Yellow Zebra Rd., near 522000 E 4253000N, before dismounting to walk the rest of the way to the site. After returning, we realized that Cactus Rd. was marked for ATVs only, and not for PEV travel. Apologies for the mistake, we are clear on the distinction now, and on our next visit, we will only take ATVs to the dismount point.