Lifeboat Foundation: Safeguarding Humanity
Toggle light / dark theme

Blog

Category: habitats – Page 150

Explaining Space Travel

I recently posted this on the only two other sites that will allow me to express my opinions;

I see the problem as one of self similarity; trying to go cheap being the downfall of all these schemes to work around human physiology.

When I first became interested in space travel several years ago I would comment on a couple blogs and find myself constantly arguing with private space proponents- and saying over and over again, “there is no cheap.” I was finally excommunicated from that bunch and banned from posting. They would start calling me an idiot and other insults and when I tried to return the favor the moderator would block my replies. The person who runs those two sites works for a firm promoting space tourism- go figure.

The problem is that while the aerospace industry made some money off the space program as an outgrowth of the military industrial complex, it soon became clear that spaceships are hard money- they have to work. The example of this is the outrage over the Apollo 1 fire and subsequent oversight of contractors- a practice which disappeared after Apollo and resulted in the Space Shuttle being such a poor design. A portion of the shuttle development money reportedly went under the table into the B-1 bomber program; how much we will never know. Swing wings are not easy to build which is why you do not see it anymore; cuts into profits.

The easy money of cold war toys has since defeated any move by industry to take up the cause of space exploration. No easy money in spaceships. People who want something for nothing rarely end up with anything worth anything. Trying to find cheap ways around furnishing explorers with the physcial conditions human beings evolved in is going to fail. On the other hand if we start with a baseline of one gravity and Earth level radiation we are bound to succeed.

The engineering solutions to this baseline requirement are as I have already detailed; a tether for gravity and a massive moonwater shield with bomb propulsion. That is EXACTLY how to do it and I do not see any one else offering anything else that will work- just waffling and spewing about R&D.
We have been doing R&D for over half a century. It is a reason to go that is supposedly lacking.

When that crater in Mexico was discovered in 1980 the cold war was reaching it’s crescendo and the massive extinction it caused was overshadowed by the threat of nuclear weapons. Impact defense is still the only path to all that DOD money for a Moon base.

Cosmic Ray Gorilla

http://www.sciencedaily.com/releases/2012/12/121231180632.htm

Excerpt: “Galactic cosmic radiation poses a significant threat to future astronauts,” said M. Kerry O’Banion, M.D., Ph.D., a professor in the University of Rochester Medical Center (URMC) Department of Neurobiology and Anatomy and the senior author of the study. “The possibility that radiation exposure in space may give rise to health problems such as cancer has long been recognized. However, this study shows for the first time that exposure to radiation levels equivalent to a mission to Mars could produce cognitive problems and speed up changes in the brain that are associated with Alzheimer’s disease.”

It appears when Eugene Parker wrote “Shielding Space Travelers” in 2006 he was right- and all the private space sycophants claiming radiation mitigation is trivial are wrong.

Only a massive water shield a minimum of 14 feet thick and massing 400 tons for a small capsule can shield human beings in deep space on long duration missions. And since a small capsule will not have sufficient space to keep a crew psychologically healthy on a multi-year journey it is likely such a shield will massive over a thousand tons.

This mass may seem to make Human Space Flight Beyond Earth and Lunar Orbit (HSF-BELO) impractical but in fact it is not an obstacle but an enabler. Nuclear Pulse Propulsion using bombs to push a spaceship to the outer solar sytem becomes more efficient the larger the ship and this amount of water is useful in a closed loop life support system.

Lighting off bombs in the Earth’s magnetosphere is not acceptable and this points to the Moon as the obvious place to launch nuclear missions and also to acquire the water for radiation shielding. The Space Launch System (SLS) is the human-rated Heavy Lift Vehicle (HLV) with a powerful escape system that can safely transport the required fissionables to the Moon.

2013 may be the year of the comet and the year of the spaceship if the two goals of protecting the planet from impacts and establishing off world colonies are finally recognized as vital to the survival of humankind.

13: The Year of The Comet

A happy new year to the human race from it’s most important member; me. Since self-worship seems to be the theme of the new American ideal I had better get right with me.

With my government going over the fiscal cliff it would appear that the damned soul of Ayn Rand is exerting demonic influence on the political system through worship of the individual. The tea party has the Republicans terrified of losing their jobs. Being just like me, those individuals consider themselves the most important person on the planet- so I cannot fault them.

As Ayn Rand believed, “I will not die, it’s the world that will end”, so who cares about the collective future of the human race? Towards the end of 2013 the heavens may remind us the universe does not really care about creatures who believe themselves all important. The choice may soon be seen clearly in the light of the comet’s tail; the glorification of the individual and the certain extinction of our race, or the acceptance of a collective goal and our continued existence.

Ayn Rand made her choice but most of us have time to choose more wisely. I pray for billions, tens and hundreds of billions of dollars- for a Moonbase.

I am not one of the Earth is overpopulated crowd. We could have a high quality of life for every man, woman and child on this planet if we did not, as a species, spend most of our resources pandering to moral weakness and cravings for profit. The myth of scarcity is a smokescreen to obscure the reality of greed and ignorance. Which is why people like Gerard K. O’Neill sought to improve the human condition with space colonies.

We need to go into space to first safeguard the Earth from impacts and the human race from extinction, and along with these missions to spread life into the universe through colonization. None of those three things has anything to do with getting filthy rich or intimidating other nations with our firepower so we can steal their resources. Which is why it has not happened.

Happy New Year with hopes for a more enlightened public.

Happy new year to my Wife, my Daughter, my Father, and to those who give a damn about next year even if they will not be there.

Standing on the Shoulders of Giants: A Galilean Base

In a previous post I explored the feasibility of an industrial base on planet Mercury — an option which on first glance had seemed implausible but on getting down to the detail could be considered quite reasonable. Here I go the other direction — outward to the first of the gas giants — and the Galilean moons of Jupiter.

From a scientific point of view it makes a lot of sense to set up a base in this region as it provides the nearest possible base to home that could start to explore the dynamics and weather systems of gaseous planets — which are quite common in our Universe — and how such planets impact on their moons — as potential locations for off-earth colonies and industrial bases. It bears consideration that only two other moons in our outer solar system are of requisite size to have a gravitational field similar or greater to that of our Moon — namely Saturn’s Titan and Neptune’s Triton — so the Galilean moons demand attention.

The first difficulty to consider is the intense radiation from Jupiter, which is far stronger than the Earth’s Van Allen radiation belts. Although proper shielding normally protects living organisms and electronic instrumentation, that from Jupiter is whipped up from magnetic fields 20,000 stronger than Earth’s, so shielding would become difficult. It has been considered that such radiation would be the greatest threat to any craft closing within 300,000 km of the planet. At 420,000 km from Jupiter, Io is the closest of the Galilean satellites. With over 400 active volcanoes, from which plumes of sulphur and sulphur dioxide regularly rise as high as 400 km above its surface, it is considered the most geologically active object in the solar system. The activity could be viewed as a source of heat/energy.

Unlike most satellites, it is composed of silicate rock with a molten iron or iron sulphide core, and despite extensive mountain ranges, the majority of its surface is characterized by extensive plains coated with sulphur and sulphur dioxide frost. One can perhaps disregard its extremely thin sulphur dioxide atmosphere as an inconvenience, though is in too close proximity to Jupiter and its extensive magnetosphere even for occasional mining expeditions from the other moons. In this regard one would have to rule out Io and any resources there completely from consideration for such as base. Onto the other options…

At 670,000 km from Jupiter, the intriguing ice-world of Europa is a much more interesting proposition. Under the ice surface it has a layer of Water Ocean surrounding the planet thought to be 100 km thick. One of the first dilemmas of setting up a base on Europa would be not to contaminate any primitive life that may already have a foothold there. Often considered a strong candidate for extra-terrestrial microbial-type life, if life was found there it could render Europa off-limits for colonisation on the grounds of ethics due to the possible contamination/destruction of a delicate ecosystem. Discounting this concern — with an unlimited supply of water — and by extraction, unlimited oxygen and hydrogen also — we have the most important ingredient to support a colony at our disposal here.

The main drawback for Europa — other than high radiation levels from proximity to Jupiter — could be the inability to mine other materials — though these could be attained from other nearby moons, and of course the extreme cold surface temperature — at approx. 100K.

Further out at just over 1,000,000 km we have Ganymede, the most massive of the Galilean moons, and hence with the strongest gravitational field. Composed of silicate rock and water ice in roughly equal proportions, it also is theorised to have a saltwater ocean far below its surface due to salts (magnesium sulphate and sodium sulphate) shown in results from the Galileo spacecraft, which also detected signs of carbon dioxide and organic compounds.

Ganymede is also thought to have a thin oxygen atmosphere, including ozone and perhaps also an ionosphere — although all again in trace amounts, and a weak magnetosphere. Whilst the atmosphere could be considered negligible in terms of the needs for a colony, it is still far more suited as an industrial base than Europa — as not only has it an ample supply of water/ice, it also has abundant resources in silicates and irons for mining and construction.

And last — but by no means least — we have Callisto — furthest out at almost 2,000,000 km, also composed of equal amounts of rocks and ices, it is different from the other Galilean satellites in that as it does not form a part of the orbital resonance that affects the three inner Galilean satellites, and therefore does not experience appreciable tidal heating. Despite this it enjoys a mean surface temperature of 135K and up to a maximum 165K – still very cold – but not as cold as the other Galilean satellites. Like Ganymede, it also has an extremely thin atmosphere, in this case composed mainly of carbon dioxide and molecular oxygen and may have a subsurface of liquid water — the likelihood of which has raised suggestions in the past that it could harbour life. Callisto has long been considered the most suitable place for a human base for future exploration of the Jupiter system since it is furthest from the intense radiation of Jupiter (http://www.nasa-academy.org/soffen/travelgrant/bethke.pdf). HOPE — Human Outer Planet Exploration — as in the above linked 2003 NASA presentation explores some of the objectives and requirements for such a pilot mission, where Callisto was selected — not surprisingly — as the most appropriate mission destination.

HOPE surface operation concepts where vehicle and robot system concepts were explored to achieving a successful first phase, and the division of tasks between crew and robotics, including the exploration of all these satellites, and it concluded a roundtrip crewed mission between 2–5 years is feasible — with significant advancement in propulsion technologies.

Atlantica Undersea Colony — Undersea Colonization and Research

It may have gone unnoticed to most, but the first expedition for mankind’s first permanent undersea human colony will begin in July of next year. These aquanauts represent the first humans who will soon (~2015) move to such a habitat and stay with no intention of ever calling dry land their home again. Further details: http://underseacolony.com/core/index.php

Of all 100 billion humans who have ever lived, not a single human has ever gone undersea to live permanently. The Challenger Station habitat, the largest manned undersea habitat ever built, will establish the first permanent undersea colony, with aspirations that the ocean will form a new frontier of human colonization. Could it be a long-term success?

The knowledge gained from how to adapt and grow isolated ecosystems in unnatural environs, and the effects on the mentality and social well-being of the colony, may provide interesting insights into how to establish effective off-Earth colonies.

One can start to pose the questions — what makes the colony self-sustainable? What makes the colony adaptive and able to expand its horizons. What socio-political structure works best in a small inter-dependent colony? Perhaps it is not in the first six months of sustainability, but after decades of re-generation, that the true dynamics become apparent.

Whilst one does not find a lawyer, a politician or a management consultant on the initial crew, one can be assured if the project succeeds, it may start to require other professions not previously considered. At what size colony does it become important to have a medical team, and not just one part-time doctor. What about teaching skills and schooling for the next generation to ensure each mandatory skill set is sustained across generations. In this light, it could become the first social project in determining the minimal crew balance for a sustainable permanent off-Earth Lifeboat. One can muse back to the satire of the Golgafrincham B Ark in Hitch-Hiker’s Guide to the Galaxy, where Golgafrinchan Telephone Sanitisers, Management Consultants and Marketing executives were persuaded that the planet was under threat from an enormous mutant star goat, packed in Ark spaceships, and sent to an insignificant planet… which turned out to be Earth. It provides us a satirical remind that the choice of crew and colony on a real Lifeboat would require utmost social research.

The Unlikely Option? An Industrial Base on Planet Mercury

At first glance, one would consider the proposition of a base on Mercury, our Sun’s closest satellite, as ludicrous. With daytime temperatures reaching up to 700K — hot enough to melt lead — while the dark side of the planet experiences a temperature average of 110K — far colder than anywhere on Earth, combined with the lack of any substantial atmosphere, and being deep in the Sun’s gravitational potential well, conditions seem unfavorable.

First impressions can be misleading however, as it is well known that polar areas do not experience the extreme daily variation in temperature, with temperatures in a more habitable range (< 273 K (0 °C)) and it has been anticipated there may even be deposits of ice inside craters. http://nssdc.gsfc.nasa.gov/planetary/ice/ice_mercury.html

And is not just habitable temperature and ice-water in its polar regions that make Mercury an interesting candidate for an industrial base. There are a number of other factors making it more favourable than either a Looner or Martian base:

Mercury is the second densest planet in our solar system — being just slightly less dense than our Earth — and is rich in valuable resources, the highest concentrations of many valuable minerals of any surface in the Solar System, in highly concentrated ores. Also, being the closest planet to the Sun, Mercury has vast amounts of solar power available, and there are predictions that Mercury’s soil may contain large amounts of helium-3, which could become an important source of clean nuclear fusion energy on Earth and a driver for the future economy of the Solar System. Therefore it is a strong candidate for an industrial base.

Ticking other boxes — the gravity on the surface of Mercury is more than twice that of the Moon and very close to the surface gravity on Mars. Since there is evidence of human health problems associated with extended exposure to low gravity, from this point of view, Mercury might be more attractive for long-term human habitation than the Moon. Also, Mercury has the additional advantage of a magnetic field protecting it from cosmic rays and solar storms.

In fact, this idea is not a new one. Back in the 1980s, C.R. Pellegrino proposed covering Mercury with solar power farms, and transferring some of the resulting energy into a form useful for propulsion for interstellar travel. When one looks at the options we have available to us for first steps into space, we have another option available to us in Mercury.

The Propagation of Life: Infecting other Worlds

It is with great bewilderment that I read the precautions that NASA rovers are sterilized to, to ensure that Life does not infect the Martian environment. I understand NASA want to explore Mars for signs of Martian life — but which is more important — to explore whether Life almost evolved on Mars, or to induce the whole process and allow it to occur?

We can get caught up in the concept that preservation of Human Life as the ultimate goal, in how do we colonize other worlds as soon as possible — but perhaps the most honorable pursuit is the propagation of Life itself — we should be introducing bacteria or simple xerophytic plants to Mars, algae to Europa and such worlds, in the anticipation that if a foothold can be taken, evolution could take hold — and we may not live to see it — but we have then passed on the gift of life to another world.

Whimsical Notions or Planning With Foresight? Unless we cause our own demise by inadvertently engineering our downfall, as often discussed here, or are struck by a statistically unfortunate large asteroid impact, Life is here on Earth for the long haul — it has been durable for billions of years, albeit with significant setbacks, and one can expect it will be here for billions more to come. We may well have time on our hands.

If we sow the seeds now, we may have other worlds to move to in a few million years — long before we may need it — such as in five billion years when the Sun has expired into a Red Giant. It is quite reasonable to expect that if we seed Mars with our bacteria now, and other basic forms of life at the bottom of the food chain — in some million years from now Mars may be flourishing with vegetation — evolved to suit the terrain — that a colony there could live off.

It has been considered, that Life on Earth started by a similar process, that a comet or asteroid carrying bacteria inseminated our planet with the seeds of life. So let’s pass on the gift and stop being so prudent. Lets start at the basics, and create lifeboats of Life around our solar system. Perhaps one day our descendants will thank us for nurturing such habitats.

Flexible Path Flim Flam revised

I do not regret voting for this President and I would and will do it again. However.……I am not happy about our space program. Not at all. One would think there would be more resistance concerning the privatization of space and the inferior launch vehicles being tested or proposed. Indeed there would be objections except for a great deception being perpetrated on a nation ignorant of the basic facts about space flight. The private space gang has dominated public discourse with very little answering criticism of their promises and plans.
This writer is very critical of the flexible path.

It is a path to nowhere.

Compared to the accomplishments of NASA’s glory days, there is little to recommend the players in the commercial crew game. The most fabulous is Space X, fielding a cheap rocket promising cheap lift. There is so little transparency concerning the true cost of their launches that one space-faring nation has called the bluff and stated SpaceX launch prices are impossible. The Falcon 9, contrary to stellar advertising, is a poor design in so many ways it is difficult to know where to begin the list. The engines are too small and too many, the kerosene propellant is inferior to hydrogen in the upper stage, and promising to reuse spent hardware verges on the ridiculous. Whenever the truth about the flexible path is revealed, the sycophants begin to wail and gnash their teeth.

The latest craze is the Falcon “heavy.” The space shuttle hardware lifted far more, though most of the lift was wasted on the orbiter. With 27 engines the faux heavy is a throwback to half a century ago when clusters of small engines were required due to nothing larger being available. The true heavy rocket of the last century had five engines and the number of Falcon engines it would take to match the Saturn V proves just how far the mighty have fallen.

Long, long posts, doubling as SpaceX advertisements, swamp any forum where the deception is exposed. The most popular and endlessly repeated dogma concerns fuel depots. Refueling in space is hyped as the answer to all problems. Unfortunately the chances of making it work with the selected propellant- liquid hydrogen- are not good. This kind of blasphemy is sure to bring howls of protest on any forum where it appears. The sad truth is the American people are being conned into throwing away the Heavy Lift Infrastructure that is the only path to Beyond Earth Orbit Human Space Flight. SpaceX is more of an exploitation company to charge the taxpayer twice than aerospace company. Everything they are pushing- from the engine design to friction stir welded stages, to the heat shield on the capsule has all been developed by NASA on the taxpayers dime. They use NASA labs and engineers for token payment and then advertise low prices. It is a scam. Worse than a scam, it is a distraction from and drain on funds from the only real possibility for space travel on the horizon; the Space Launch System (SLS).

LEO is not space exploration. It is not space travel. It may have qualified as space flight at one time but not anymore. It is endless circles at very high altitude. If any achievement deserves the “been there” scoff it is Low Earth Orbit.

Human beings left Earth at 24,200 mph (38,938 km/hr) in December of 1968. In December of 1972 we returned and have not gone back. We did continue Heavy Lift launches after Apollo with the Space Shuttle- but the STS did not launch humans beyond earth orbit. Due to lack of funding the Shuttle regrettably launched a hundred tons of wings, landing gear, and never full cargo bay over one hundred times so they could come right back. What little stayed up there at very high altitude going in circles is that higher price tag people cry about.

To expand the human race into the solar system requires nuclear energy. We will not be assembling, testing, and lighting off any nuclear systems in LEO. We do however have a human rated capsule with a powerful escape system almost ready that is suitable for transporting fissionables directly to the Moon- where we can assemble, test, and light off nukes. To send that capsule directly to the moon, and the human beings to construct a base that can support a nuclear mission, we need an HLV with hydrogen upper stages. The hydrogen upper stages are what made Apollo successful by making a heavy payload go fast. That vehicle is a few years away and sooner with more money. The DOD has vast resources it expends on weapons that do not protect us from two clear and present dangers; impacts and plagues. I often give examples on this site of “cold war toys” that are “hideously expensive” and do not seem to work right or do anything magical. That big rocket is the magic that will open the solar system to human colonization. Private space efforts are not capable of making any of it happen. This is why I consider the whole “new space” movement as being essentially rich hobbyists selling tourist trips. My thoughts on this “narrow and inflexible path” are based largely on the work of Freeman Dyson and Eugene Parker- and the discovery of millions of tons of water on the Moon.

Despite having “been there,” the Moon is the next step in opening up the solar system to human exploration and colonization. Low Earth Orbit is being sold as space travel even though to travel, you have to go somewhere. The battle cry of “cheap lift” is promoting the equivalent of the “liar loans” that wrecked the housing market. Falling for this something for nothing too good to be true rip-off will leave the U.S. trapped. Decades more of nothing but more endless circles at very high altitude. Mars is used as a marketing gimmick but is really just a rock with a deep gravity well. Everyone seems to think it is “just close enough” for chemical propulsion. It is not. If you are going to build the necessary Atomic Spaceship (and we would have to have a moonbase to launch a nuclear mission) you might as well go someplace really interesting.

All those places are in the outer solar system.
http://www.sciencedaily.com/releases/2012/06/120628190006.htm
To establish a moonbase requires the Space Launch System to be put into service. There is no substitute for a Heavy Lift Vehicle with hydrogen upper stages.

The 130 ton lift of the proposed SLS is also at this time slated to be used as a crew vehicle. This was one of the worst mistakes of the shuttle program. The crew capsules being tested and built by SpaceX and Boeing pack seven astronauts into a vehicle without a proper escape system and, in the case of SpaceX, doubling as a cargo vehicle. Both of these vehicles have an escape-system-that-is-not-an-escape-system. These underpowered hypergolic systems are not very good at saving a crew but will work great raising the orbit of tourist space stations. This is another one of those worst mistakes being repeated.

Infomercial hype aside, the falcon “heavy” and Delta IV are not HLV’s. This misinformation deceives the public and makes the average citizen think the SpaceX hobby rocket is a Saturn V. At a thrust of around 100,000 pounds each it would take 72 merlins to equal the thrust of the SRB’s on SLS, not counting what the 4 liquid hydrogen engines also produce- with much greater efficiency than Kerosene.

The real problem with the U.S. space program is obvious to anyone looking at how much money is spent by the DOD. It is always interesting to hear sermons about how critical surveillance satellites are to fighting illiterate mountain tribesman. Any DOD contractor hearing complaints about NASA wasting money breaks down in maniacal laughter. One of my favorite talking points is that we can train our young people to clear buildings with automatic weapons or we can train them to build spaceships; either way the money will get spent.

Take a look at military spending increases and it is obvious funding for spaceflight can go up. And there IS a valid DOD mission BEO and BELO (Beyond Earth and Lunar Orbit). The valid military mission is impact defense and establishing outposts in the outer system- but this is hard money the aerospace industry wants nothing to do with. Unlike so many easy money weapon systems, spaceships have to actually work.

GENCODE Apocalypse

http://www.sciencedaily.com/releases/2012/09/120905134912.htm

It is a race against time- will this knowledge save us or destroy us? Genetic modification may eventually reverse aging and bring about a new age but it is more likely the end of the world is coming.

The Fermi Paradox informs us that intelligent life may not be intelligent enough to keep from destroying itself. Nothing will destroy us faster or more certainly than an engineered pathogen (except possibly an asteroid or comet impact). The only answer to this threat is an off world survival colony. Ceres would be perfect.

Lunar Space Station vs. Asteroid Mission

http://www.msnbc.msn.com/id/48869943#.UELWXqD0SXY

The glacial pace of NASA’s human spaceflight program –even with the glaciers melting- may possibly see human beings leave Earth’s gravitational field in 2025. Possibly.

The missing piece of the puzzle is a radiation sanctuary massive enough to protect a crew from a major solar event on such a journey.

http://www.nasatech.com/NEWS/Nov05/who_1105.html

A fairly massive shelter, probably made of RFX1, will have to be available for any deep space mission. But why chase down a boulder? A mission to orbit the moon is a much more worthwhile project.

Why do we have a space station orbiting the Earth instead of the Moon? The answer is money of course. Such a station would not have the protection of the Van Allen belts and would require heavy shielding. The vehicle to insert such a heavily shielded station into lunar orbit and resupply it existed in the form of the cargo version of the space shuttle- called Sidemount.

Sidemount was never funded, and a vast amount of money- over 100 billion dollars- spent on the ISS was essentially wasted on tin cans going in endless circles at very high altitude. It does have a nice window though.

Low Earth Orbit is a dead end.
We now have the opportunity to launch a station to orbit the Moon in a relatively short time frame using the Delta IV vehicle. But again, the political football that is human space flight is the first to be cut- while cold war monstrosities like the V-22 Osprey and F-35 Stealth Fighter suck up billions and deliver wonder weapons that do not work.

Why are we trapped and going in circles- going nowhere? Along with the trillion dollar war, billions of dollars are.….missing. Nobody even knows where those billions went.

I know one thing; there went our space program.

http://www.rawstory.com/rs/2011/06/13/official-billions-miss…l-history/

http://www.rawstory.com/rs/2010/10/28/billions-afghan-aid-unaccounted-audit/

http://www.huffingtonpost.com/2011/08/30/military-spending-waste_n_942723.html

/* */