“We have adjusted the orbits of three satellites to get more view time on the Ares 3 site, and hope to catch an image of him outside soon. If we can see him outside, we will be able to draw conclusions on his physical health based on stance and activities.
“The questions are many: How long can he last? How much food does he have? Can Ares 4 rescue him? How will we talk to him? The answers to these questions are not what we want to hear.
“I can’t promise we’ll succeed in rescuing him, but I can promise this: The entire focus of NASA will be to bring Mark Watney home. This will be our overriding and singular obsession until he is either back on Earth, or confirmed dead on Mars.”
“Nice speech,” Venkat said as he entered Teddy’s office.
“Meant every word of it,” Teddy said.
“Oh, I know.”
“What can I do for you, Venk?”
“I’ve got an idea. Well, JPL has an idea. I’m the messenger.”
“I like ideas,” Teddy said, gesturing to a seat.
Venkat sat down.
“We can rescue him with Ares 4. It’s very risky. We ran the idea by the Ares 4 crew. Not only are they willing to do it, but now they’re really pushing hard for it.”
“Naturally,” Teddy said. “Astronauts are inherently insane. And really noble. What’s the idea?”
“Well,” Venkat began, “It’s in the rough stages, but JPL thinks the MDV can be misused to save him.”
“Ares 4 hasn’t even launched yet. Why misuse an MDV. Why not make something better?”
“We don’t have time to make a custom craft. Actually, he can’t even survive till Ares 4 gets there, but that’s a different problem.”
“So tell me about the MDV.”
“JPL strips it down, loses some weight, and adds some fuel tanks. Ares 4’s crew lands at the Ares 3 site, very efficiently. Then, with a full burn, and I mean a full burn, they can lift off again. It can’t get back to orbit, but it can go to the Ares 4 site on a lateral trajectory that’s, well, really scary. Then they have an MAV. This would require a massive design and construction effort, but JPL says they can make it happen.”
“How are they losing weight?” Teddy asked. “Don’t they already have it as light as it can be?”
“By removing safety and emergency equipment.”
“Wonderful,” Teddy said, “So we’d be risking the lives of six more people in a very dangerous landing, re-liftoff, re-landing process.”
“Yup,” Venkat said. “It would be safer to leave the Ares 4 crew in Hermes, and only send the pilot down with the MDV. But that would mean giving up the mission and they’d rather risk death.”
“They’re astronauts,” Teddy said.
“They’re astronauts,” Venkat confirmed.
“Well. That’s a ludicrous idea and I’ll never ok it.”
“We’ll work on it some more,” Venkat said. “Try to make it safer.”
“Do that. Any idea how to keep him alive for four years?”
“Nope.”
“Work on that, too.”
“Will do,” Venkat said.
Teddy swiveled his chair and looked out the window to the sky beyond. Night was edging in. “What must it be like?” He pondered. “He’s stuck out there. He thinks he’s totally alone and that we all gave up on him. What kind of effect does that have on a man’s psychology?”
He turned back to Venkat. “I wonder what he’s thinking right now.”
How come Aquaman can control whales? They’re mammals! Makes no sense.
Chapter 7
I finished making water some time ago. I’m no longer in danger of blowing myself up. The potatoes are growing nicely. Nothing has conspired to kill me in weeks. And ’70’s TV keeps me disturbingly more entertained than it should. Things are stable here on Mars.
It’s time to start thinking long term.
Even if I find a way to tell NASA I’m alive, there’s no guarantee they’ll be able to save me. I need to be proactive. I need to figure out how to get to Ares 4.
Won’t be easy.
Ares 4 will be landing at the Schiaparelli Crater, 3,200km away. In fact, their MAV is already there. I know because I watched Martinez land it.
It takes 18 months for the MAV to make its fuel, so it’s the first thing NASA sends along. Sending it 48 months early gives it plenty of extra time in case fuel reactions go slower than expected. But much more importantly, it means a precision soft-landing can be done remotely by a pilot in orbit. Direct remote operation from Houston isn’t an option; they’re anywhere from 4 to 20 light-minutes away.
Ares 4’s MAV spent 11 months getting to Mars. Using less fuel and taking a longer route, it got there around the same time as us. As expected, Martinez landed it beautifully. It was one of the last things we did before piling in to our MDV and heading to the surface. Ahh, the good old days, when I had a crew with me.
I’m lucky. 3,200km isn’t that bad. It could have been up to 10,000km away. And because I’m on the flattest part of Mars, the first 650km is nice, smooth terrain (Yay Acidalia Planitia!) but the rest of it is nasty, rugged, crater-pocked hell.
Obviously, I’ll have to use a rover. And guess what? They weren’t designed for massive overland journeys.
This is going to be a research effort, with a bunch of experimentation. I’ll have to become my own little NASA, figuring out how to explore far from the Hab. The good news is I have lots of time to figure it out. Almost 4 years.
Some stuff is obvious. I’ll need to use a rover. It’ll take a long time, so I’ll need to bring supplies. I’ll need to recharge en-route, and rovers don’t have solar cells. I’ll need to steal some from the Hab’s solar farm. During the trip I’ll need to breathe, eat, and drink.
Lucky for me, the tech specs for everything are right here in the computer.
I’ll need to trick out a rover. Basically it’ll have to be a mobile Hab. I’ll pick Rover 2 as my target. We have a certain bond, after I spent two days in it during the “Great Hydrogen Scare of Sol 37.”
There’s too much shit to think about all at once. So for now, I’ll just think about power.
Our mission had a 10km operational radius. Knowing we wouldn’t take straight-line paths, NASA designed the rovers to go 35km on a full charge. That presumes flat, reasonable terrain. Each rover has a 9000Wh battery.
Step one is to loot Rover 1’s battery and install it in Rover 2. Ta-daa! I just doubled my full-charge range.
There’s just one complication. Heating.
Part of the battery power goes to heating the rover. Mars is really cold. Normally, we were expected to do all EVAs in under 5 hours. But I’ll be living in it 24½ hours a day. According to the specs, the heating equipment soaks up 400W. Keeping it on would eat up 9800Wh per day. Over half my power supply, every day!
But I do have a free source of heat: Me. A couple million years of evolution gave me “warm blooded” technology. I can wear layers. The rover has good insulation, too. It’ll have to be enough; I need every bit of power.
And because I need to bundle up anyway, I can deactivate the heater outright and use all the power for motion (minus a negligible amount for computer, life support, etc.)
According to my boring math, moving the rover eats 200Wh of juice to go 1km, so using the full 18,000Wh gets me 90km of travel. Now we’re talkin’.
I’ll never actually get 90km on a single charge. I’ll have hills to deal with, and rough terrain, sand, etc. But it’s a good ballpark. It tells me that it would take at least 35 days of travel to get to Ares 4. It’ll probably be more like 50. But that’s plausible, at least.