Lunarpedia - User contributions [en]

Lunarpedia:Outline draft/THE RETURN

2010-08-15T02:40:23Z

Sdsds: /* L1 Depot */ typo fix: L! -> L1

<big><big><big>'''''[[Lunarpedia:Outline_draft|Back To Main Outline Draft Index]]'''''</big></big></big>

=[[Lunarpedia:Outline_draft/PRELUDE|PRELUDE]]=
=[[Lunarpedia:Outline_draft/WHERE TO|WHERE TO]]=

=THE RETURN=

==Bursting Apollo's envelope==
===No one has experienced a lunar dawn or lunar sunset.===
===No one has slept prone in a bed on the Moon===
===No one has taken more than a step or two on the Moon without a space suit===

==Getting to the Moon==
===Launchers===
===Cargo carriers===
===Commodity carriers===
*Launch tracks
===Modular pod transport systems===
*Finished hard habitat modules
*Inflatable module packs
*Modular factory systems
*Modular utility systems
:Power generation
:Air recycling
:Water recycling
:Waste recycling
===Personnel carriers===
*Crew cabins
*Landing craft
*Ascent craft
:Pressurized
:Open-cockpit
===Designing landing components for reuse on the Moon===
===Developing lunar fuels that can be used between GEO and the Moon===

==Earth to Moon Way Stations==
===LEO Depot===
===L1 Depot===
*Growing L1 in step with the growth of surface operations

===LLO Depot===

==Site Preparation==
===Grading===
===Room for future expansion===
===Planned warehousing===
===Planned expansion vectors===
===Planned access corridors===
===Location of nearest resources per type===

==Teleoperations==
===Pre-landing teleoperations===
*Site exploration, asset & obstacle mapping
*Site preparation
*Shielding emplacement
*Initial roadways and paving
*other
===post landing teleoperations===
*Robotic exploration of areas of interest
*Robotic preliminary prospecting
*Robotic installation of self-help service stations, relays, way points, beacons
*other

==Outpost Modules==
===Adapted ISS hard modules===
===Ganged SpaceHab modules===
===New hard modules===
===Nautilus adaptations===
===Connectors===
===Other items===
===Tankage===
===Periscopic windows, "sundows"===
===sunpipe systems===

==Shielding Options==
===Direct===
*Raw regolith
*Processed regolith less iron, volatiles, large rocks
*Modular regolith: blocks, bags, baffle systems, saddlebags
*Shielding styling, cladding, coloring and other ways of personalization of the exterior of a personal or corporate habitat
===Shielding indirect===
*Modular hangar structures and interfaces, surface prep
*Shielded warehousing
*Expansion options
===Lavatube sites===

==Site management issues==
===Respecting the topography===
===Natural area steadies===
===Road and path location issues===
===Warehousing systems===
*Sorting for reuse
:By material (knock-down (KD) items)
:Mixed materials
*Barcoding for locatability
*Shielded vs. unshielded warehousing
:Canopy covered storage
:Lavatube storage
*Tank farms

==Outpost ingress/egress==
===Spacesuit-docking===
===Vehicle docking===
===Vehicle to vehicle docking===
===Dust management systems===
===other===

==Outpost/Settlement Wastes==
===Human Wastes===
===Biomass wastes===
===Packaging Wastes===
===Processing wastes===
===Waysources (waste resources)===
===Throughput===
===Energy reuse/energy embodiments===
===other===

==Making Money at the Outpost==
===Deploying and testing proprietary ISRU equipment===
===Photography for movie backgrounds===
===Collect lunar samples for sale===
===Made-on-luna trinkets, coins===
===Crew members to pay towards their participation, after full training===
===other ideas===

[[Category:Business]]

=[[Lunarpedia:Outline_draft/BREAKOUT AGENDA|BREAKOUT AGENDA]]=
=[[Lunarpedia:Outline_draft/SETTLEMENT GROWTH|SETTLEMENT GROWTH]]=
=[[Lunarpedia:Outline_draft/TRADE AND THE BOTTOM LINE|TRADE AND THE BOTTOM LINE]]=
=[[Lunarpedia:Outline_draft/HEALTHY CITIZENS|HEALTHY CITIZENS]]=
=[[Lunarpedia:Outline_draft/UNIVERSITY OF LUNA|UNIVERSITY OF LUNA]]=

<big><big><big>'''''[[Lunarpedia:Outline_draft|Back To Main Outline Draft Index]]'''''</big></big></big>

Talk:Sandworms

2007-04-25T03:20:55Z

Sdsds: large harvesting machines in the Dune universe are not called sandworms

== What's in a name? ==

Making up good names is important to getting a project started. Giving thins a name makes them more real. Early adopters and enthusiast love an inside joke and will work just to make the name happen. If you have better names for things than I have bring them forward.

A bad name can kill a project. Our space station when through many redesigns and changed its name with each. Started out as Eagle and ended up as the International Space Station. I am sure it was that last name that killed it.

Thanks, --[[User:Jriley|Jriley]] 15:39, 15 March 2007 (PDT)

:I fear the name is confusing. In Herbert's science fiction series, sandworms are desert-dwelling creatures. But they do not collect spice; they (sandtrout, the haploid form) create it. Eventually by-products of the production build up and explode in a spice blow that releases the spice onto the surface of the desert. The confusion comes from the existence in the Dune universe of large harvesting machines, much like those described here, '''which are not called sandworms'''. I wish I had a good alternate suggestion for you! [[User:Sdsds|Sdsds]] 03:20, 25 April 2007 (UTC)
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Picosatellite

2007-04-25T03:08:06Z

Sdsds: spacecraft with a mass below 1 kg

A '''picosatellite''' is a spacecraft with a mass below 1 kg (2.2 lb). Because of this low mass, they are relatively easy to launch, and have often shared launch vehicles and piggy-backed on launch vehicles also carrying larger payloads. Some designs require a larger "mother" satellite for communication with ground controllers. The CubeSat design is an example of a picosatellite.

Spacecraft in this mass range would also be considerably easier to deliver to lunar orbit or to the lunar surface. Existing launch vehicles could be reconfigured for this kind of mission. California Polytechnic State University and Stanford University, who introduced the CubeSat design, estimate CubeSats can be made and launched to LEO for US$65,000–80,000 each (2004 US dollars).

Tethers Unlimited

2007-04-25T02:55:35Z

Sdsds: MAST experiment

'''Tethers Unlimited''' (or "TU") is a company founded by the late Dr. [[Robert L. Forward]] and [[Robert Hoyt]] to commercialize applications of [[tether]]s for space propulsion and other applications. They have launched a set of three [[picosatellite]]s intended for use in the company's "Multi-Application Survivable Tether" (MAST) experiment. The current status of MAST is described on [http://www.tethers.com/MAST_Blog.html its blog page]

{{Business Stub}}

==External Links==
*[http://www.tethers.com Tethers Unlimited website]
*[http://www.tethers.com/papers/CislunarAIAAPaper.pdf Cislunar tether propulsion paper] (in PDF format)

[[Category:Vendors]]

Roof Support

2007-04-03T04:32:52Z

Sdsds: /* Inflatable housing */ Lost -> Loss (fixed typo)

[[Image:ArchDorm01.jpg|frame| Architecture as Mole Hills, Standard dorm room]]

==Supporting Roofs on the Moon==

One serious problem will be your roof falling in on you.

===Using the roof for radiation shielding===

The need for radiation shielding for lunar settlement occupants means that there will be significant mass on the roof of all buildings used for long term occupancy. Much electronic equipment will need shielding too. This could be in the form of lunar regolith as suggested in [[Architecture as Mole Hills]] or material brought from Earth, but it must be present. If your roof falls in on you, you will be in trouble.

===Inflatable housing===

Since the interior living space must be at considerably higher air pressure than the exterior, it is only logical to use the force this pressure exerts on the outside walls to help support the weight of the roof. The rooms then become like balloons getting much of their strength from their internal pressure.

The problem come when you loss the pressure and the massive roof falls in on you. Loss of pressure, or blow out, is a real possibility caused by meteorites, ejecta, landing accident, or industrial accident. Even if you can get into an enviornmental suit, you will have to get to safety before your air supply runs out.

===Safety rule===

This problem will require a strong safety rule that will greatly affect the design of lunar buildings. One possible rule is this:

;Roof Support Rule: With the internal building pressure completely lost, a person wearing an environmental suit must have enough clearance to crawl to safety even if a second person is lying immobile in the evacuation path.

===Rule's effect===

Such a rule, combined with the very high cost of bringing mass from Earth, will make large open room very rare on the Moon. Most rooms will have to be at least narrow in one direction and will have to have central support for the roof. This support could take the form of strong partitions or columns.

What will be very difficult to build will be very large areas such as meeting rooms and mess halls. The absence of such rooms will make living in a lunar settlement even more claustrophobic. You will be able to see panoramic vistas of open space on a dozens of external monitors while living in series of cramped spaces.

{{Hazards}}

[[Category:Architecture]]
[[Category:Hazards]]

User:Sdsds

2007-04-03T04:17:47Z

Sdsds: Wikipedia

More about me can be found on my Wikipedia [http://en.wikipedia.org/wiki/User:Sdsds user page].

Orbits

2007-04-03T04:13:38Z

Sdsds: /* The Moon is Gravitationally very Lumpy */ curst -> crust

==Orbits to and Around the Moon==

=== General Theory of Orbits===
The motion of one body about another body due to gravity, is known as an Orbit. [[Orbits]] are described by a body of theory called "[[Orbital Dynamics]]". [[Kepler]] discovered that in [[Newtonian]] [[Physics]], which ignore [[Einstein]]'s theories of [[relativity]], orbits are [[elliptical]] in shape, at least for the simple case of one body orbiting another body without any influence from any third body. [[Kepler's Laws]] are three [[equations]] which describe elliptical orbits, and still hold true today.

===The Moon is Gravitationally very Lumpy===

The Moon is both out of round and does not have a symmetric distribution of mass. The result is that low lunar orbits are not stable for long time periods. For example, the Apollo Command modules would have drifted out of reach for the returning Lunar Lander in only a few days.

The mass distribution of the Moon varies from a perfect sphere by:

* An equatorial bulge
* Mass Concentrations (Masscon) in the Mares
* The Near Side crust being ½ the thickness of the Far Side crust
* A mass deficiency in the South Pole Aitken Basin (which were we are going)

===Result on Lunar Orbits===

If you need a long term stable lunar orbit, either you have to maintain considerable altitude or you have to choose from a limited number of low orbits that happen to balance out the lumps. There are about five angles to the lunar equator that have long term orbits. One of these is in the high 80 degrees of inclination and is attractive for polar work.

Having to use only selected low lunar orbits means that the lunar landers must carry additional fuel. The new lander design has large fuel tanks for this reason. Also there will be fewer and more limited launch windows for leaving the Moon.

Most other low lunar orbits simply crash into the Moon within a few weeks.

===A Trip to the Moon===

The factors controlling the choice of a path from the Earth to the Moon are very different for manned and unmanned vehicles. In all cases, a lunar polar site takes a little more delta V, and therefore rocket fuel, than an equatorial site.

====Unmanned:====

Usually for unmanned vehicles, you are simply trying for the most mass delivered to the Moon for a given type of rocket launched from a specific Earth port. Often you trade off time in transit for additional mass delivered. The transit time may be a few extra days or even weeks longer than manned flights. If an ion drive transfer rocket is used, this trip could take months. The launch windows for this type of trip are wide open.

====Manned:====

The safest route is to fly first to an orbit near the International Space Station (ISS). You do not plan to stop, but if you have an emergency you could reach the station. You then have a problem. ISS has a high orbit inclination so that it can be reached from Russian launch sites. This is a poor orbit to use for lunar transfer as it takes a lot of fuel to take out the inclination. One workable solution is to next fly to the Earth-Moon Lagrange Point 2 (L2). At this point the gravity of the two bodies is nearly balanced and you can make a burn of reasonable size to move you on your way to a near lunar polar orbit. Your path will look like a large figure 8 that is twisted at the cross-over point. This transfer path takes more time and fuel and has fewer and shorter launch windows than more direct methods.

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[[Category:Missions]]
[[Category:Mission Plans]]
[[Category:Physics]]
[[Category:Suborbital]]
[[Category:Transportation]]
[[Category:Spacecraft]]