Cylindrical Habitats - Horizontal or. Vertical ?. Gary C. Fisher The Mars Foundation GFisher@MarsHome.org Rutgers University Symposium On Lunar Settlements Piscataway, NJ June 5, 2007. Background and parameters of this work.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Gary C. Fisher
The Mars Foundation
Symposium On Lunar Settlements
Piscataway, NJ June 5, 2007
The Mars Foundation’s Mars Homestead Project is an ongoing effort to define the first self-sufficient settlement for Mars.
This effort produced an initial design, “The Hillside Base” using habitat structures, mostly cylinders, constructed on site from in situ materials over the course of 6 to 8 years by 12 people.
Graphic by Georgi Petrov for the Mars Foundation
For the purposes of creating in situ habitable spaces for a Lunar settlement, cylinder-shaped structures present the best near-term option over alternatives, such as:
- spherical or dome structures
- excavated structures
- lined lava tubes
- inflated structures (noncylindrical)
- regolith covered masonry vaulted arches.
- Hemispherical or flat end caps
- Rigid or inflatable
- True cylinder, ellipsoid or flattened
- Single or multi-wall
The primary consideration, however, is whether to stand the cylinder up vertically on an end, or lay it down horizontally on its side.
That the simplest, safest, and easiest to deploy cylindrical habitat would be one that has a flat end on which it is stood up like a beer (or tuna) can, one story high, with the top end cap being hemispherical.
These would be connected via smaller diameter cylindrical connector modules that can also be used as air locks.
The modules would have domed solar tubes, that can double as emergency exits, to pipe sunlight down through the regolith cover into the structure to provide some of the interior illumination.
Lunar 2.5 m / Mars
Floor area is 6.05 m^2 (65.12 ft^2)
NASA Diameter is 3.65m
<- ISS Destiny Module
BIOPLEX at JSC ->
2. Footings are more complicated.
4. Hard to cover with regolith.
5. Limited full headroom.
There are a number of alternative approaches:
Attach legs (most likely attached to U-shaped cradles) to the cylinder that rest on pre-constructed footings and allow for some height adjustment.
Put the cylinder inside a box frame which is then positioned on a pre-constructed footing.
Consider this manageable size horizontal habitat.
Floor area is 18.77 m^2 (202.04 ft^2)
Linear deployment has safety issues.
Connectors help solve the escape route problem.
Connectors help solve the safety issues, but how do you cover this with regolith?
Connectors in series allow for closer packing.
What is a manageable size?
How much headroom depends upon where you put the floor.
4 Connections 6 Connections 3 Connections
2 Doors 6 Connections
Graphic by Adam Burch for the Mars Foundation