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Archive for the ‘engineering’ category: Page 239

Aug 24, 2012

How to Build a Spaceship again

Posted by in categories: asteroid/comet impacts, biological, biotech/medical, business, chemistry, counterterrorism, defense, economics, education, engineering, ethics, events, existential risks, finance, futurism, geopolitics, habitats, human trajectories, life extension, lifeboat, media & arts, military, nuclear weapons, physics, policy, space, sustainability, transparency

This essay was originally posted last year and is now back with small changes. Enjoy.

The first decade of the 21st century ended with human space flight nowhere near to fulfilling the predictions made at the beginning of the space age. Not even close. Just as the Vietnam war robbed the space exploration budget, the end of the century found vast public funds, a truly mind boggling amount of treasure, spent on the cold war toys that have yielded guaranteed huge profits for the military industrial complex. Many of these incredibly expensive weapon systems do not work as advertised and very few of them have any application in the present war on terror. 911 did not stop the money flowing to new super fighter planes and missiles designed to shoot down other missiles. The promise of space was in truth sacrificed for the profits of the weapons industry. The expected moon bases and colonies on Mars were never funded and no human being has escaped earth orbit since the last Apollo mission. The underfunded space shuttle completely failed to provide the cheap lift and multi-mission capability that was never really possible to achieve. The showpiece International Space Station is little more than a 100 billion dollar collection of tin cans flying in endless circles.

Over a quarter century wasted and the human race seems in large part to have accepted the end of the space age. Despite a collection of old and new inferior lift vehicles incapable of accelerating a spacecraft to escape velocity, there is endless hype concerning the privatization of space and the bright future these for profit enterprises will bring about. The single point of failure in these schemes is the false miracle of fuel depots in space. These orbital gas stations will supposedly enable all the missions that previously could only be accomplished by a Heavy Lift Vehicles like the Saturn V. Cryo fuel storage and transfer is at this time a myth and has never even been attempted due to the extreme difficulties involved. It is simply a smoke screen to disguise defeat. We are not going anywhere if we stay on this path. The only hope for human space flight is the realization that deep space travel may at any time mean the difference between humankind surviving or disappearing forever. If this truth cannot unlock the vast resources required then we are sealing our collective fate. The Spaceship is the only insurance against extinction. Safeguarding the entire human race is the ultimate military mission, yet is completely ignored by our leaders and the defense industry. The inevitable asteroid or comet impact and the threat of a 100 percent lethal plague are with us right now. We as a species are playing a game of Russian roulette. We truly do not know when, but we know what is coming.

Everyone breathes a sigh of relief when it is explained that disastrous impacts only occur an average of once every several million years. The key fact never discussed is impacts are random. An impact could occur tomorrow, and again the next day, and it would just be a blip on a curved line representing the immensity of geologic time. No one would be left to exclaim, “WOW! What were the odds of that happening?” In the same way the threat of engineered pathogens is ignored, overlooked, or scoffed at in the hopes it will just go away. Just as there is little than can be done to stop seasonal flu, there is very little that could be done to stop such an airborne plague once it begins. Naturally evolved pathogens always leave a certain percentage of survivors but an engineered virus does not follow that rule. We are led to believe there is no defense, but we are being decieved and there is nothing further from the truth.

Continue reading “How to Build a Spaceship again” »

Aug 24, 2012

The Fermi Paradox and Silent Planets

Posted by in categories: asteroid/comet impacts, business, counterterrorism, defense, economics, education, engineering, ethics, events, existential risks, finance, futurism, geopolitics, habitats, human trajectories, life extension, lifeboat, media & arts, military, nuclear weapons, policy, space, sustainability, transparency

http://www.sciencedaily.com/releases/2012/08/120823150403.htm

In a recent comment John Hunt mentioned the most probable solution to the Fermi Paradox and as more and more planets are discovered this solution becomes ever more troubling.

Whether civilizations are rare due to comet and asteroid impacts- as Ed Lu recently stated was a possibility- or they self-destruct due to technology, the greater danger is found in human complacency and greed. We have the ability right now, perhaps as hundreds or even thousands of other civilizations had, to defend ourselves from the external and internal threats to our survival. Somewhat like salmon swimming upstream, it may not be life itself that is rare- it may be intelligent life that survives for any length of time that is almost non-existent.

The answer is in space. The resources necessary to leave Earth and establish off world colonies are available- but there is no cheap. Space travel is inherently expensive. Yet we spend billions on geopolitical power games threatening other human beings with supersonic fighters and robot missile assassins. The technology to defend civilization as a whole from the plausible threat represented by this “Great Silence” will cost us no more than what we spend on expensive projects like vertical take-off stealth fighters and hyper-velocity naval rail guns. But it is not the easy money of weapons; it is the hard money of vehicles and systems that must work far from Earth that is unattractive to the corporate profit motive.

Atomic spaceships capable of transporting colonists and intercepting impact threats are the prerequisites to safeguarding our species.

Aug 21, 2012

Antimatter Catalyzed Fusion

Posted by in categories: engineering, futurism, media & arts, physics, space

The recent Skeptical Enquirer article linked to this site proclaiming antimatter propulsion as “pseudoscience” was.….wrong.

Antimatter will have to be produced in quantity to be used for propulsion but very small quantities may be all that is required for an interim system using antimatter to ignite fusion reactions.

It may be that some people pushing their own miracle solutions do not like other more practical possibilities.

Unlike any type of gravity manipulation, anti-matter is a fact. Anti-matter catalyzed fusion is a possible method of interstellar propulsion; far more in the realm of possibility than anti-gravity.

Aug 20, 2012

New Findings on the Antimatter Drive

Posted by in categories: business, engineering, finance, fun, particle physics, physics

Andrew Skolnick drew my attention to this great article by John Eades, a CERN senior scientist, about antimatter engines and weapons.

Antimatter Pseudoscience by John Eades in the Skeptical Inquirer http://www.csicop.org/si/show/antimatter_pseudoscience/

We, Andrew Skolnick and I, did the calculations and showed that it would cost 42,876x our 2011 World GDP to use antimatter as a propulsion fuel to get to Alpha Centauri!!

John Eades goes one better and shows that it is not technologically feasible, ever. His article is facinating reading, and shows that we cannot base our hopes to leave Earth on antimatter drives.

Continue reading “New Findings on the Antimatter Drive” »

Aug 20, 2012

Enhanced AI: The Key to Unmanned Space Exploration

Posted by in categories: engineering, robotics/AI, space

The precursor to manned space exploration of new worlds is typically unmanned exploration, and NASA has made phenomenal progress with remote controlled rovers on the Martian surface in recent years with MER-A Spirit, MER-B Opportunity and now MSL Curiosity. However, for all our success in reliance on AI in such rovers — similar if not more advanced to AI technology we see around us in the automotive and aviation industries — such as operational real-time clear-air turbulence prediction in aviation — such AI is typically to aid control systems and not mission-level decision making. NASA still controls via detailed commands transmitted to the rover directly from Earth, typically 225 kbit/day of commands are transmitted to the rover, at a data rate of 1–2 kbit/s, during a 15 minute transmit window, with larger volumes of data collected by the rover returned via satellite relay — a one-way communication that incorporates a delay of on average 12 or so light minutes. This becomes less and less practical the further away the rover is.

If for example we landed a similar rover on Titan in the future, I would expect the current method of step-by-step remote control would render the mission impractical — Saturn being typically at least 16 times more distant — dependent on time of year.

With the tasks of the science labs well determined in advance, it should be practical to develop AI engines to react to hazards, change course of analysis dependent on data processed — and so on — the perfect playground for advanced AI programmes. The current Curiosity mission incorporates tasks such as 1. Determine the mineralogical composition of the Martian surface and near-surface geological materials. 2. Attempt to detect chemical building blocks of life (bio-signatures). 3. Interpret the processes that have formed and modified rocks and soils. 4. Assess long-timescale (i.e., 4-billion-year) Martian atmospheric evolution processes. 5. Determine present state, distribution, and cycling of water and carbon dioxide. 6. Characterize the broad spectrum of surface radiation, including galactic radiation, cosmic radiation, solar proton events and secondary neutrons. All of these are very deterministic processes in terms of mapping results to action points, which could be the foundation for shaping such into an AI learning engine, so that such rovers can be entrusted with making their own mission-level decisions on next phases of exploration based on such AI analyses.

Whilst the current explorations on Mars works quite well with the remote control strategy, it would show great foresight for NASA to engineer such unmanned rovers to operate in a more independent fashion with AI operating the mission-level control — learning to adapt to its environment as it explores the terrain, with only the return-link in use in the main — to relay back the analyzed data — and the low-bandwidth control-link reserved for maintenance and corrective action only. NASA has taken great strides in the last decade with unmanned missions. One can expect the next generation to be even more fascinating — and perhaps a trailblazer for advanced AI based technology.

Aug 19, 2012

Artilects Soon to Come

Posted by in categories: complex systems, counterterrorism, cybercrime/malcode, defense, engineering, ethics, events, evolution, existential risks, futurism, information science, military, neuroscience, supercomputing

Whether via spintronics or some quantum breakthrough, artificial intelligence and the bizarre idea of intellects far greater than ours will soon have to be faced.

http://www.sciencedaily.com/releases/2012/08/120819153743.htm

Aug 17, 2012

Ivanpah as the future

Posted by in categories: business, economics, education, engineering, ethics, finance, futurism, geopolitics, human trajectories, media & arts, physics, policy, space, sustainability, transparency

http://www.kcet.org/news/rewire/solar/concentrating-solar/ni…tinue.html

Cover the deserts in solar energy plants and use electric trains for our transportation infrastructure; the best future I can imagine. A favorite Einstein quote is “Not everything that can be counted counts, and not everything that counts can be counted.” Perhaps the number we are counting that counts is the amount of energy it would require for a future population of 10 billion people to live like we do in the west.

I was surprised to find a statement to the effect that only one method of generating this energy is practical; solar energy beamed to Earth from the Moon; from wiki–

Continue reading “Ivanpah as the future” »

Aug 16, 2012

GMO Armaggedon

Posted by in categories: biological, biotech/medical, business, chemistry, counterterrorism, defense, economics, education, engineering, ethics, events, existential risks, finance, futurism, geopolitics, homo sapiens, media & arts, military, open access, open source, policy, transparency

http://www.newsdaily.com/stories/bre87f15x-us-california-gmo/

Filthy Lucre will certainly destroy us all if we cannot even pass a law that makes food companies tell us what they are feeding us.

Aug 15, 2012

Approaching the Great Rescue

Posted by in categories: biological, biotech/medical, business, chemistry, complex systems, education, engineering, ethics, events, evolution, existential risks, futurism, geopolitics, homo sapiens, human trajectories, life extension, media & arts, neuroscience, philosophy, policy, singularity, sustainability, transparency

http://www.sciencedaily.com/releases/2012/08/120815131137.htm

One more step has been taken toward making whole body cryopreservation a practical reality. An understanding of the properties of water allows the temperature of the human body to be lowered without damaging cell structures.

Just as the microchip revolution was unforeseen the societal effects of suspending death have been overlooked completely.

The first successful procedure to freeze a human being and then revive that person without damage at a later date will be the most important single event in human history. When that person is revived he or she will awaken to a completely different world.

Continue reading “Approaching the Great Rescue” »

Aug 14, 2012

Boom and Bust for Wind Energy

Posted by in categories: business, economics, engineering, ethics, events, finance, futurism, human trajectories, policy, sustainability, transparency

http://www.sciencedaily.com/releases/2012/08/120814121119.htm

Just as the tax incentives that expired after the Carter Administration destroyed a whole new industry, and just as bio fuels recently turned into the bio bomb, wind energy is poised to crash.

We just will not stop destroying our future.

A coal fired power plant runs for years with very little maintenance, without being shut down or started up- the boilers make steam and turn the turbines and we cannot see the stars because we might as well burn those city lights all night long. It is impossible to compete with black rock you dig out of the ground and put on a train and turn into dependable cheap electricity.

Continue reading “Boom and Bust for Wind Energy” »