Thanks to Void we have another to make use of in "Mars Direct 3 is a Mars mission architecture developed by Miguel Gurrea" topic.
https://www.marspapers.org/paper/Gurrea_2021.pdf
Plus Mars direct was a 40mT payload
https://www.marspapers.org/paper/Zubrin_1991.pdf
A reuseable craft requires the means to make the fuel of choice.
]]>Plus Mars direct was a 40mT payload
https://www.marspapers.org/paper/Zubrin_1991.pdf
A reuseable craft requires the means to make the fuel of choice.
Roughly 2.6 years of experience CONJUNCTION: LONG-STAY Over 500 days at Mars with crew transit time between Earth and Mars: 160 – 180 days.
These next two require high levels of fuel and causes lots of problems.
Total mission length could be roughly 2.4 years FAST-TRANSIT LONG-STAY.
Roughly 1.8 years OPPOSITION: SHORT-STAY.
First Martian habitat, including crew quarters and a common area. Mass budget: 34t
Cranes, pipes, batteries and all operating equipment. Mass budget: 13t
The rover has 2 tons of combustible methane and at least the stochiometric oxygen to combust it and that the fuel cell is 20% efficient, the rover is essentially a 5625 KWh battery. Assuming a power consumption of 200 KWh per sol, the fuel in the rover would last for 28 sols.
Fuel tanker rover. Mass budget: 4t
Water tanker rover. Mass budget: 3.5t
Pressurized Rover. Mass budget: 10t
Panel deployment rovers (6): Mass budget: 3t
10 KW for 14 years, having a mass of 1300 Kg.
Kilopower-like reactors: Mass budget: 33t
Additional solar panels/fission reactors. Mass budget: 36t
24.8 tons of panels, covering an area of 6209.4 m2.
20 KW of solar panels: Mass budget: 2t
Solar panels (20KW). Mass budget: 2t
Deployable solar panels: Mass budget: 30t
Water extraction/ice mining machinery. Mass budget: 20t
ISRU machinery and storage. Mass budget: 37t
140.4 tons of oxygen would need to be produced. carbon dioxide from the atmosphere could be electrolyzed at a rate of 1 Kg a day with a supply of 1.714 KW. They proposed a more efficient scaled-up version. Further scaling up to fit MD3, 204.75 KW over a period of 400 days would be needed to produce 140.4 tons of O2.
Scientific equipment, batteries, carbon dioxide electrolyzers and other. Mass budget: 30t
Liquid methane. Mass budget: 45t
]]>crew member daily needs
0.59 kg Oxygen
2.75 kg drinking water
0.50 kg food prep water
0.80 food solids
0.76 sealed food water content
2.39 kg numbers include pagaing
---------------
5.74 kg total
required is 5.03 kg
captured is 1.44 kk from metabolic + water in food and wipes
17 x 5.74 kg x length of the round trip journey which is designed around the mission profile.
waste cycle out house
1.08 kg O2
3.04 kg perspiration and exhaling
1.40 kg urine
0.66 kg urine solid
0.09 kg Feces water
0.03 kg Feces solid
0.04 kg Perspiration and solids
--------------------
5.74 kg total
water to recover is 5.33 kg
So how heavy is the recycling and power requirements to get the water back for reuse.
support for crew of 6
Food, water and supplies. Mass budget: 11.5t
Extra water and supplies: Mass budget: 12t
Which means time changes all that man will need and how to break down each load size to fit within the payload that we will land with.
This is the biggest of change for the ships fuel and size to be able to bring it to Mars.
This is what was planned.
Not sure if going in a circle like an open pit mine would change quantity of water yield but it serves to create living space.
]]>
Thanks for giving us a reminder of OF1939's ambitious concept for an expedition.
I'd like to offer for your consideration that a drilling rig the size of the one made by the Italian company shown in the Water topic would need a crew of some size to manage the remote operations, and they would need support staff to take care of all the details of keeping everyone healthy for a two plus year on site job.
The equipment can be sent before the crew, and since the system is designed to be automated, much of the assembly can be done ahead of time by automation. However, I expect that final assembly and day-to-day operations need a human crew nearby.
(th)
]]>A couple of images to baseline from.
]]>
Experience the Starship interior as one of the crew
looking downward
there are many decks to see if they will work or modification will be required for what will optimize a mission.
]]>So, what is the cycle time of cargo that a crew requires is what is now needed to maintain the population which stays.
So is the first real landing of the minimum enough knowledge to allow for any to stay and if not, when would we start the living on Mars progression that builds on the toe and then foothold that man will attempt.
]]>The topics of air food shelter applies to making the robust start with a growth potentail basewd on hard first steps to gain a foothold.
proven technologies from the ISS to allow for the sustainable production of air and water. Conversely, there is as yet no method for
the sustainable production of food in low gravity. As a result, we assume that earth shipments will deliver food but not water or air. Earth shipments deliver sufficient food for one additional earth shipment cycle (10.5kg of food per settler per week).