Folks, I think its time to drive a stake in the ground and begin zeroing in on what MarsDrive will publish as its Design Reference Mission. We could spend the...
... I already have a bad feeling about this. The hab will be about four years old at that point, and if it's inflatable, I can't see stowing it after such a...
Terry, ... inflatable, I can't see stowing it after such a term. Clearly, you are responding without having read ANYTHING in the DRM. If you had, you would...
... That is correct: I read the file after posting the reply to the message body. ... That breaks a very old convention among Mars mission designers both...
The only human-critical piece of the propellant ISRU is collecting the water-bearing feedstock, and we've been doing that sort of thing for millennia. Still,...
I'd like to say that from what I'm reading Ron we are on the right track and you certainly have my endorsement to continue with this design as it is. Yes,...
How are you going to qualify the ISRU system itself though? With all the unknown risks and already known hazards involved, I would rather not take such a...
Here are a few thoughts and a few simulations looking at the trade-offs between direct entry into the Earth's atmosphere with a small crew capsule versus...
Terry, There are really two Unknowns here – can we process whatever hydrogen feedstock Mars offers us, as you said; and, can we process the atmosphere...
Since Dragon is a 45deg 25% Corona type sphere-cone forebody and generating an L/D oof 0.3 (vs. 70deg baseline) it seems likely to me that it's Cd is quite a...
... zzzzz...I've gone to GO-EXPO and Global Petroleum Shows here in Calgary with looking up stuff like that in mind. They also have high performance ...
Yeah, I couldn't find anything either, so I guessed. Since the hab is cylindrical, any angle of attack will expose part of the cylindrical afterbody directly...
From: marsdrivemission@yahoogroups.com [mailto:marsdrivemission@yahoogroups.com] On Behalf Of Terry Wilson Sent: Thursday, February 07, 2008 7:03 PM To:...
It'll get toasty anyway because of turbulence heating. There needs to be a rake angle or a rimmed heatshield to give it some "shadow". I had intrinsically...
... substantial deposits in the areas we are interested in around 15 North latitude, but we won't know for sure until somebody actually digs a shovel into the...
I thought I'd raise a few points here on the ISRU topic so I'll start a different category for it called "100% ISRU?" ... to ... North ... a shovel ... doesn't...
Reading through this debate I began to see what some of the issues might be and how they relate to what we are aiming for here. First of all, Mars is a big...
Actually, Terry, we don't need all the fancy instruments. I don't really care what the mineral is, so long as I can extract water from it. I'm not interested...
Frank, It's funny you should throw this out there right now. I, also, have been thinking about the wisdom of tying everything to local water resources on the...
So here's a few numbers from a little BOTE-scratching. I haven't checked this too closely - I'm sure one or more of you will be happy to oblige in doing that -...
... Not sure but last I knew the Hydrogen fuel cells run on liquid Oxygen and Liquid Hydrogen to generate power and output water. Rather than the creation of...
Far question also to ask is the size of the ICE or mineral deposit form as if it takes more energy to mine it and to get it to the piece size for processing in...
taken from RE: [marsdrivemission] 2008, Where we stand to be put under the 100% insitu: [rmc] Actually, Terry, we don't need all the fancy instruments. I don't...
... Terry: So, you're not interested in how much power it will take to get that water vapor? How easy or difficult it is to get the material? How much ...
So if I understand this correctly Ron, will the crew be able to use the water produced by this process you have described for drinking and other life support...
Frank, No, I threw the environmental water in there already. The un-rounded-off numbers are: Ascent propellants: 63,517 kg. Ascent hydrogen required: 3,452 kg....
So then why don't we go with this idea? Production of water and propellant is needed and this process satisfies both requirements AND gives the crew the time...
Frank, Thanks to the seed hydrogen, fuel cell, etc, I am down to 8mT of cargo in R-2. Adding a pressurized rover will either consume most of that, leaving very...
