The Martian

The procedure is what you’d expect. After waking up, I have a potato for breakfast. Then, I deflate the bedroom from the inside. It’s kind of tricky, but I worked out how.

First, I put on an EVA suit. Then I close the inner airlock door, leaving the outer door (which the bedroom is attached to) open. This isolates the bedroom, with me in it, from the rest of the rover. Then I tell the airlock to depressurize. It thinks it’s just pumping the air out of a small area, but it’s actually deflating the whole bedroom.

Once the pressure is gone, I pull the canvas in and fold it. Then I detach it from the outer hatch and close the outer door. This is the most cramped part. I have to share the airlock with the entire folded up bedroom while it repressurizes. Once I have pressure again, I open the inner door and more-or-less fall in to the rover. Then I stow the bedroom, and go back to the airlock for a normal egress to Mars.

It’s a complicated process, but it detaches the bedroom without having to depressurize the rover cabin. Remember, the rover has all my stuff that doesn’t play well with vacuum.

The next step is to gather up the solar cells I’d laid out the day before and stow them on the rover and trailer. Then I do a quick check on the trailer. I go in through its airlock and basically take a quick look at all the equipment. I don’t even take off my EVA suit. I just want to make sure nothing’s obviously wrong.

Then, back to the rover. Once inside, I take off the EVA suit and start driving. I drive for almost 4 hours, and then I’m out of power.

Once I park, it’s back in to the EVA suit for me, and out to Mars again. I lay the solar panels out and get the batteries charging.

Then I set up the bedroom. Pretty much the reverse of the sequence I use to stow it. Ultimately it’s the airlock that inflates it. In a way, the bedroom is just an extension of the airlock.

Even though it’s possible, I don’t rapid-inflate the bedroom. I did that to test it because I wanted to find where it’ll leak. But it’s not a good idea. Rapid inflation puts a lot of shock and pressure on it. It would eventually rupture. I didn’t enjoy that time the Hab launched me like a cannonball. I’m not eager to repeat it.

Once the bedroom is set up again, I can take off my EVA suit and relax the rest of the day. I mostly watch crappy 70’s TV. I’m indistinguishable from an unemployed guy for most of the day.

I followed that process for four sols, and then it was time for an “Air Day”.

An Air Day turns out to be pretty much the same as any other day, but without the 4 hour drive. Once I set up the solar panels, I fired up the Oxygenator and let it work through the backlog of CO2 the Regulator had stored up.

Once it was done, my test run was complete. It converted all the CO2 to oxygen, and used up the day’s power generation to do it.

The test was a success. I’ll be ready on time.

LOG ENTRY: SOL 449

Today’s the big day. I’m leaving for Schiaparelli.

The rover and trailer are all packed. They’ve been mostly packed since the test run. But now I even have the water aboard.

I spent the last several days running full diagnostics on everything. The Regulator, Oxygenator, RTG, AREC, batteries, rover life support (in case I need a backup), solar cells, rover computer, airlocks, and everything else with a moving part or electronic component. I even checked each of the motors. Eight in all, one for each wheel, four on the rover, four on the trailer. The trailer’s motors won’t be powered, but it’s nice to have backups.

It’s all good to go. No problems that I can see.

The Hab is a shell of its former self. I’ve robbed it of all critical components and a big chunk of its canvas. I’ve looted that poor Hab for everything it could give me, and in return it’s kept me alive for a year and a half. It’s like The Giving Tree.

I performed the final shutdown today. The heaters, lighting, main computer, etc. All the components I didn’t steal for the trip to Schiaparelli.

I could have left them on. It’s not like anyone would care. But the original procedure for Sol 31 (which was supposed to be the last day of the surface mission) was to completely shut down the Hab and deflate it. NASA didn’t want a big tent full of combustible oxygen next to  the MAV when it launched, so they added the shutdown process to the mission.

I guess I did it as an homage to the mission Ares 3 could have been. A small piece of the Sol 31 I never got to have.

Once I shut everything down, an eerie silence was all that remained. I’ve spent 449 sols listening to the heaters, vents, and fans. But now it was dead quiet. It’s a creepy, eerie kind of quiet that’s hard to describe. I’ve been away from the Hab before, but always in the rover or an EVA suit. There’s always some kind of machinery in operation.

But now there was nothing. I never realized how utterly silent Mars is. It’s a desert world with practically no atmosphere to convey sound. I could hear my own heartbeat.

Anyway, enough waxing philosophical.