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Archive for the ‘engineering’ category: Page 249

Oct 9, 2012

The Kline Directive: Introduction

Posted by in categories: business, complex systems, defense, economics, engineering, ethics, finance, philosophy, physics, policy, space

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,

Continue reading “The Kline Directive: Introduction” »

Oct 8, 2012

We are as Gods and have to get Good at it [video]

Posted by in categories: climatology, complex systems, engineering, ethics, existential risks, futurism, geopolitics, homo sapiens, human trajectories, philosophy, sustainability

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

Oct 8, 2012

Congratulations SpaceX

Posted by in categories: engineering, finance, open source, scientific freedom, space

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!

Oct 7, 2012

Debunking Pulse Detonation Engines — Yes, No, Maybe

Posted by in categories: business, defense, engineering, military, nuclear weapons, physics, space, treaties

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.

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Oct 4, 2012

How do you debunk this?

Posted by in categories: defense, engineering, finance, particle physics, physics, scientific freedom, space

Previous post in this Debunking Series.

——-

This video was broadcast on G4TV, September 19th 2012.

http://www.g4tv.com/videos/60838/dr-eric-w-davis-on-new-ligh…g-science/

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Oct 1, 2012

Debunking Antimatter Rockets for Interstellar Travel

Posted by in categories: education, engineering, physics, policy, space

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” »

Oct 1, 2012

Debunking Conventional Rocket Interstellar Travel Once And For All

Posted by in categories: education, engineering, physics, policy, space

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 how much fuel one would require just to reach 0.1c and then cost at that velocity until you reach Alpha Centauri and reverse thrust to orbit the star.

Table 1: Conventional Rocket Fuel Costs to travel to Alpha Centauri at 0.1c
Maximum Velocity (km/s)

1980’s cost ($/lb)

Continue reading “Debunking Conventional Rocket Interstellar Travel Once And For All” »

Oct 1, 2012

Liquor & Glass — Sellafield/BNFL Keeping a Lid on It

Posted by in categories: engineering, ethics, nuclear energy, policy, sustainability, transparency

Fukushima reawakened the world to the dangers of nuclear power, and reading back over Fearing Sellafield (2003) by Colum Kenny recently, I reflect back on how deflective and dishonest industry can be to steer clear of critical opinion. Seeing parallels suggested in other industries today, I wonder if much has really changed.

Highly Active Liquor (HAL) produced by the reprocessing of irradiated nuclear fuel at Sellafield, reached a level of 1,500 cubic meters in storage at its peak circa 2001, the capacity of a 50 meter Olympic swimming pool. Particularly unstable, a disruption to electricity & water coolant could result in such liquor boiling, overloading the ventilation filtration systems and leading to a nuclear accident. Containing about 80 times the amount released during the 1986 Chernobyl accident according to a report for the European Parliament at that time, we are rather fortunate such a serious accident never occurred. This analysis was provided by what became known as The WISE Report — so called due to associated with the World Information Service on Energy (WISE) in Paris. In response BNFL set out to reduce this liquor to a solid form known as ‘glass’ — borosilicate glass — much safer than when kept in liquid form, and put in storage — though much of it still remains to be vitrified.

In 2000/2001, the Nuclear Installations Inspectorate (NII) of the HSE published a number of reports on aspects of Sellafield that led to causes of concern. One report in particular entitled ‘an investigation into the falsification of pellet diameter data in the MOX demonstration facility at the BNFL Sellafield site and the effect of this on the safety of MOX fuel in use’ suggested deliberate dishonesty in keeping records. BNFL subsequently complied with most of these recommendations.

Authors of the WISE report however still had concerns regarding increases in levels in certain sea discharges and aerial releases, and inconsistent with the UK’s obligations under the OSPAR Convention. It stated that the deposition of plutonium within 20km of Sellafield attributable to aerial emissions has been estimated at 160–280 billion becquerels — several times the plutonium fallout from all atmospheric nuclear weapons testing, and that 250kg-500kg of plutonium from Sellafield has been absorbed as sediments on the bed of the Irish sea ‘representing a long-term regional hazard of largely unknown proportions’. The report had been treated with caution by the European Commission and conveniently dismissed by the National Radiological Protection Board in the UK by claiming that some of the conclusions drawn in the report were based on ‘lacking objectivity’. It seems that governments are always bent towards safeguarding industry first, leaving environmental concerns and the health of our Mother Ship as a secondary issue.

Sep 26, 2012

On Leaving the Earth. Like, Forever. Bye-Bye.

Posted by in categories: asteroid/comet impacts, cosmology, defense, engineering, existential risks, futurism, human trajectories, lifeboat, military, singularity, space


Technology is as Human Does

When one of the U.S. Air Force’s top future strategy guys starts dorking out on how we’ve gotta at least begin considering what to do when a progressively decaying yet apocalyptically belligerent sun begins BBQing the earth, attention is payed. See, none of the proposed solutions involve marinade or species-level acquiescence, they involve practical discussion on the necessity for super awesome technology on par with a Kardeshev Type II civilization (one that’s harnessed the energy of an entire solar system).

Because Not if, but WHEN the Earth Dies, What’s Next for Us?
Head over to Kurzweil AI and have a read of Lt. Col. Peter Garretson’s guest piece. There’s perpetuation of the species stuff, singularity stuff, transhumanism stuff, space stuff, Mind Children stuff, and plenty else to occupy those of us with borderline pathological tech obsessions.

[BILLION YEAR PLAN — KURZWEIL AI]
[U.S. AIR FORCE BLUE HORIZONS FUTURE STUFF PROJECT]

Sep 22, 2012

Debunking the Black Hole Interstellar Drive

Posted by in categories: business, engineering, fun, physics, policy, space

Louis Crane and Shawn Westmoreland co-authored the paper Are Black Hole Starships Possible? (http://arxiv.org/abs/0908.1803) that suggested that one could use Small Black Holes to propel starships close to the velocity of light for interstellar travel. To give them credit, they stated that this is at the “edge of possibility” and would only be possible in the very distant future:

“The purpose of this paper is to investigate whether it is possible to build artificial BHs of the appropriate size, and to employ them in powerplants and starships. The conclusion we reach is that it is just on the edge of possibility to do so, but that quantum gravity effects, as yet unknown, could change the picture either way… Many questions which arise in this program lead to calculations in general relativity which have not been done. Whatever the other merits of our proposal, we are confident it will pose many interesting problems for classical and quantum relativity.”

Note, BH = Black Holes

That is it. Crane & Westmoreland were presenting an academic exercise to pose “many interesting problems for classical and quantum relativity”.

Continue reading “Debunking the Black Hole Interstellar Drive” »