“Hey, now there is an idea!” Tom got quiet for a second and zoned out in thought. The other two men had worked with him long enough to know that they shouldn’t interrupt his process, because he usually came up with something brilliant when he did that. They sat patiently, quietly, and drank their beers. Alan had had to refill his because Traci was busy on the other side of the restaurant, but he made sure she was not looking his direction when he did.
“Let’s see…” Tom began to mutter to himself. “The C3 for that orbit’s… right… the I-S-P for that engine is four hundred-eighty seconds as near as makes no difference… and the asymptotic velocity would be… yep!”
“What?” Roger asked.
“Why orbit Mars? It’s a waste of mass to put the braking engine on there. Let’s do a super quick fly-by. Hell, we could even crash into it if we want to. Take data right up to the end although you wouldn’t have time to send back the data if you impact the planet, hmmm, better fly-by. If the problem is that the entire planet is changing then we should be able to see the phenomenon wherever we look, so orbiting isn’t really needed. Yep, fly-by sounds right,” he concluded.
“And with the right engines and the right trajectory — I want to check my thinking on my computer later, but — I think we could get a spacecraft large enough to do the job there in four or five months travel time — maybe.”
“Can you get me those calculations soon?” Roger asked.
“What’s the hurry, Rog?” Alan cocked his head to the left and looked in his beer glass.
“Well, first, if it’s aliens we shouldn’t just sit around and let them continue on with whatever it is they’re doing.” Roger sipped his beer and wiped his mouth. “Second, I’m headed back up to Chantilly next week for a meeting with the Director of AS and T at — you know. And I thought I could give him a white paper with the reasoning, strawman, mission architecture, and possible data product description. We should put a short bit in there about CONOPS also. Alan, I’d need you to write up the part on the command and data handling. Figure out how we’d get the data back from Mars.” Roger tapped a box on the rough strawman drawing on the napkin in front of him marked C DH. “And the telecom — both spacecraft and ground stations.”
“No problem. We’ll probably need a big aperture and a TWeeTA or two. Deep Space Network would be nice, but I’ll shoot for some thirty-meter dishes groundside. Who’s doing the power generation, conditioning, and distribution systems?”
“I guess I’ll handle as much of the nuts and bolts as I can manage over the weekend. I’m thinking we might be able to grab a spacecraft bus that is already being built for another program. Tom, could you work out the trajectories and such? Figure out what motors and what requirements for the ACS and RCS to hold us on target within say a tenth of a microradian right up until we hit the Martian closest approach point?” Roger asked.
“Yeah, sounds like fun. Assume a Delta IV or Atlas V, right?”
“Yeah, or whatever it takes. Just remember that time is of the essence and we want off-the-shelf stuff. I’ll copy and paste standard spacecraft fairing and attachment stuff out of one of our previous mission white papers. We should be able to put together a pretty good mission architecture concept.” Roger rubbed his chin wondering if he had forgotten anything.
“What about the cost and schedule?” Tom asked.
“Oh, yeah, we’ll need that too, I expect. I’ll do a ROM and a schedule. Hey, you know what, I think I still have that Microsoft Project task and work breakdown structure we did on that last mission. I could change it pretty easy to have a pretty good ROM and schedule for this concept. Let’s see, is there anything else?”
“Hey, Rog.” Alan rubbed his chin.
“Yeah?”
“What about security?”
“Oh, yeah, we best not forget security.” Roger nodded. “Let’s treat everything we write up in the
“Uh,” Tom looked around the room wide-eyed. “Then I guess we shouldn’t talk about it here anymore?”
“You’re probably right,” Alan said.
“Can we meet at my office for lunch tomorrow, Wednesday, Thursday, and Friday to see where we are with this?”
“Fine by me,” Alan said.
“Hey, we can pull Project up on the big projection screen in the conference room and y’all can help fix that WBS and schedule up.”
“Suits.” Tom scribbled a few more notes on his napkins.
“Make sure those napkins are unclassified, Tom.”
“Yes, Mother.”