Congratulations Skydiver Felix Baumgartner, on the success of your 24 mile skydive. You proved that it is possible to bail out of a space ship and land on Earth safely.
The records are nice to have but the engineering was superb!
To achieve interstellar travel, the Kline Directive instructs us to be bold, to explore what others have not, to seek what others will not, to change what others dare not. To extend the boundaries of our knowledge, to advocate new methods, techniques and research, to sponsor change not status quo, on 5 fronts:
1. Legal Standing. 2. Safety Awareness. 3. Economic Viability. 4. Theoretical-Empirical Relationship. 5. Technological Feasibility.
In this post I will explore Safety Awareness.
In the heady rush to propose academically acceptable ideas about new propulsions systems or star drives it is very easy to overlook safety considerations. The eminent cosmologist Carl Sagan said it best “So the problem is not to shield the payload, the problem is to shield the earth” (Planet. Space Sci., pp. 485 – 498, 1963)
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.
Continue reading “The Unlikely Option? An Industrial Base on Planet Mercury” »
To achieve interstellar travel, the Kline Directive instructs us to be bold, to explore what others have not, to seek what others will not, to change what others dare not. To extend the boundaries of our knowledge, to advocate new methods, techniques and research, to sponsor change not status quo, on 5 fronts:
1. Legal Standing. 2. Safety Awareness. 3. Economic Viability. 4. Theoretical-Empirical Relationship. 5. Technological Feasibility.
In this post I will explore Legal Standing.
With respect to space exploration, the first person I know of who pushed the limits of the law is Mr. Gregory W. Nemitz of The Eros Project. He started this project in March 2000. As a US taxpayer, Nemitz made the claim that he is the Owner of Asteroid 433, Eros, and published his claim about 11 months prior to NASA landing its “NEAR Shoemaker” spacecraft on this asteroid.
Science and engineering are hard to do. If it wasn’t we would have a space bridge from here to the Moon by now. If you don’t have the real world practical experience doing either science or engineering you won’t understand this, or the effort and resources companies like Boeing, Lockheed, SpaceX, Orbital Sciences Corp, Scaled Composites, Virgin Galactic, and the Ad Astra Rocket Company have put into their innovations and products to get to where they are, today.
If we are to achieve interstellar travel, we have to be bold.
We have to explore what others have not.
We have to seek what others will not.
We have to change what others dare not.
The dictionary definition of a directive is, an instruction or order, tending to direct or directing, and indicating direction.
Dictionary of Military and Associated Terms, US Department of Defense 2005, provides three similar meanings,
The shift that has happened in 40 years which mainly has to do with climate change. Forty years ago, I could say in the Whole Earth Catalog, “we are as gods, we might as well get good at it”. Photographs of earth from space had that god-like perspective.
What I’m saying now is we are as gods and have to get good at it. Necessity comes from climate change, potentially disastrous for civilization. The planet will be okay, life will be okay. We will lose vast quantities of species, probably lose the rain forests if the climate keeps heating up. So it’s a global issue, a global phenomenon. It doesn’t happen in just one area. The planetary perspective now is not just aesthetic. It’s not just perspective. It’s actually a world-sized problem that will take world sized solutions that involves forms of governance we don’t have yet. It involves technologies we are just glimpsing. It involves what ecologists call ecosystem engineering. Beavers do it, earthworms do it. They don’t usually do it at a planetary scale. We have to do it at a planetary scale. A lot of sentiments and aesthetics of the environmental movement stand in the way of that.
Continue reading “We are as Gods…” and watch the video interview
The New York Time reported Space Exploration Technologies of Hawthorne, Calif. — SpaceX, for short — launched its Falcon 9 rocket on schedule at 8:35 p.m. Eastern time from Cape Canaveral, Fla.
The Wall Street Journal reported, “trouble-free countdown followed by liftoff at 8:35 p.m. ET, precisely as scheduled.”
Maj. Gen. Charles F. Bolden Jr., the NASA administrator said, “It actually marks the beginning of true commercial spaceflight to take cargo to the International Space Station for us.”
This is a milestone in the relationship between public and private enterprise. The handoff of what public enterprise, NACA/NASA, pioneered, developed and brought to maturity, to private enterprises capable of lowering the costs of space travel with ambitions to do more than stay in low earth orbit.
Congratulations, to Elon Musk, who believed it was possible, and went ahead and proved all the nay sayers wrong. This is an example of how one man’s vision and tenacity has changed the way we perceive the world. Congratulations!
Previous posting in this Debunking Series.
In this post we will look at the last three types of engines. Can these engine technologies be debunked?
Start with the boring stuff. Nuclear/plasma engines. For more information look up Franklin Chang-Diaz’s Variable Specific Impulse Magnetoplasma Rocket (VASIMR). Real. Cannot be debunked.
Now for the more interesting stuff. The second is Pulse Detonation Engines (PDE). This type of engine uses detonation waves to combust fuel and oxidizer mixture. “The engine is pulsed because the mixture must be renewed in the combustion chamber between each detonation wave initiated by an ignition source.” Theoretically this type of engine is capable of speeds from subsonic to Mach 5.
Continue reading “Debunking Pulse Detonation Engines — Yes, No, Maybe” »
Previous post in this Debunking Series.
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This video was broadcast on G4TV, September 19th 2012.
http://www.g4tv.com/videos/60838/dr-eric-w-davis-on-new-ligh…g-science/
Previous Post in this Debunking Series.
Why is it necessary to debunk bad or unrealistic technologies? If don’t we live in a dream world idealized by theoretical engineering that has no hope of ever becoming financially feasible. What a waste of money, human resources and talent. I’d rather we know now upfront and channel our energies to finding feasible engineering and financial solutions. Wouldn’t you?
We did the math required to figure out the cost of antimatter fuel one would require just to reach 0.1c and then cost at that velocity, never mind about reaching Alpha Centauri.
| Table 2: | Antimatter Rocket Fuel Costs to Alpha Centuariat 0.1c (in metric tons) | ||||
| Source of Estimates | Amount of Antimatter Required | Maximum Velocity |
Spacecraft Mass | ||
Continue reading “Debunking Antimatter Rockets for Interstellar Travel” »
