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I've made my first novel, Ventus, available as a free download, as well as excerpts from two of the Virga books.  I am looking forward to putting up a number of short stories in the near future.

Complete novel:  Ventus

 

To celebrate the August, 2007 publication of Queen of Candesce, I decided to re-release my first novel as an eBook. You can download it from this page. Ventus was first published by Tor Books in 2000, and and you can still buy it; to everyone who would just like to sample my work, I hope you enjoy this version.

I've released this book under a Creative Commons license, which means you can read it and distribute it freely, but not make derivative works or sell it.

Book Excerpts:  Sun of Suns and Pirate Sun

I've made large tracts of these two Virga books available.  If you want to find out what the Virga universe is all about, you can check it out here:

Major Foresight Project:  Crisis in Zefra

In spring 2005, the Directorate of Land Strategic Concepts of National Defense Canada (that is to say, the army) hired me to write a dramatized future military scenario.  The book-length work, Crisis in Zefra, was set in a mythical African city-state, about 20 years in the future, and concerned a group of Canadian peacekeepers who are trying to ready the city for its first democratic vote while fighting an insurgency.  The project ran to 27,000 words and was published by the army as a bound paperback book.

If you'd like to read Crisis in Zefra, you can download it in PDF form.

Short Stories

I'll be adding new stories here periodically.  First of all, you can try my Aurora-award nominated short story "Hopscotch."  The year this was nominated, another of my stories was also nominated:  "The Toy Mill," which I wrote with David Nickle.  "The Toy Mill" won the award; but I've always been fond of "Hopscotch."  Here it is, in its entirety excerpted from my collection The Engine of Recall.

Personal tools

technology

Feb 16, 2010

Video of the Boskone Singularity panel

Courtesy of Michael Johnson

Here's the panel that Vernor Vinge, Charlie Stross, Aleister Reynolds, and I did at Boskone 47 on "The Technological Singularity:  an Assessment."  We critiqued the idea itself, its effect on science fiction writing, and its influence on our own works. You can watch it below; enjoy!

 

The Singularity: An Appraisal from Michael Johnson on Vimeo.

Sep 25, 2009

The US has a new innovation strategy - but where's Canada?

Peter Jones, one of my teachers at OCAD, alerted us today to a new innovation strategy just announced for the U.S. by President Obama. From the press release:

The mission of the Office of Innovation and Entrepreneurship is to unleash and maximize the economic potential of new ideas by removing barriers to entrepreneurship and the development of high-growth and innovation-based businesses. The office will report directly to Locke and focus specifically on identifying issues and programs most important to entrepreneurs. Working closely with the White House and other federal agencies, this new office will drive policies that help entrepreneurs translate new ideas, products and services into economic growth. The office will focus on the following areas:

    * Encouraging Entrepreneurs through Education, Training, and Mentoring

    * Improving Access to Capital

    * Accelerating Technology Commercialization of Federal R&D

    * Strengthening Interagency Collaboration and Coordination

    * Providing Data, Research, and Technical Resources for Entrepreneurs

    * Exploring Policy Incentives to Support Entrepreneurs and Investors

Not very many years ago, Canada's federal government was funding foresight exercises into subjects such as the future of health care and national security.  Under the conservatives, these initiatives have dried up (along with so much else).  Where's Canada in the new economy of the 21st century?

Sep 21, 2009

$6/Kg to orbit

Filed Under:

It's a number well within our reach

A poisonous meme has been spreading lately--well, not lately; this has been building now for many years.  It's most recently appeared in this New York Times op-ed piece by Lawrence Krauss.  Krauss floats the idea of sending astronauts on a one-way trip to Mars, because as we all know, the radiation bath of space is just too toxic to contemplate a two-way trip.

Of course, this "deadly radiation bath" stuff is nonsense.

The meme that has taken over our society's perception of space travel is that it is incredibly hard, and incredibly dangerous.  This despite the fact that twelve men walked on the moon, forty years ago, using 1960s technology.

The objections all sound reasonable:  too much radiation!  Too far away!  Zero gravity is too debilitating!  Too expensive!

All of these objections are true, while at the same time they're all wildly wrong, and largely for the same reasons.  In fact they're all true only if getting from Earth to orbit remains as expensive as it is now.

  Consider the seemingly insurmountable problem of radiation that Krauss complains of in his piece.  What's the solution to radiation?  Shielding.  Is shielding a spacecraft impossible, or even difficult?  No, actually it's easy.  Two meters of water around the crew cabin are enough to solve the problem of radiation in the inner solar system.  The problem is not the shielding; it's the cost of shipping the water up to orbit that is the problem.

Ditto for, oh, let's say zero gravity.  No astronaut should ever have to put up with zero gravity for more than a day or two at a time; the simple solution to the debilitating effects of freefall is to spin the spacecraft.  To do it in a manner comfortable to to the astronauts, you need a long boom arm, which might be heavy and awkward to lift from Earth.  The point is, the solution is easy.

Too far away?  If a space voyage is going to take months or years, there are two simple solutions:  send the ship faster, by using more propellant; or bring along more supplies.  Both of these solutions are primarily constrained by the cost of bringing stuff up from Earth.

The list goes on.  The fact is, there is only one problem worth speaking about in space development, and that is the problem of cost-to-orbit.  It currently costs around $10,000/kg to launch anything at all.  

That price will never come down as long as chemical rockets are the only technology we use.   Compare the above cost to Alexander Bolonkin's Magnetic Space Launcher, where the price for launching acceleration-hardened non-living objects into space is calculated to be $6/kg.  In 2004's NIAC report Modular Laser Launch Architecture: Analysis and Beam Module Design by Jordin T. Kare, thoroughly investigates the cost to launch a human being into orbit using a laser launcher, and comes to a figure of $200/kg.   (Both of these systems use electricity and would not themselves pollute at all.)

Even Kare's fancier (and more thoroughly researched) laser launcher provides a cost-to-orbit figure that's 50 times less than current systems. The cost to develop and test his system is also orders of magnitude less than NASA is proposing to spend on the (chemically-driven) Ares launch system.  

So where's the radiation problem when you can launch 50 times as much mass into orbit for the same price?  Where's the supply problem?  Or the velocity problem when you can launch 2000 times as much fuel and hardware using Bolonkin's launcher?

Space is only a costly and dangerous destination if you insist on using 1960s technology to reach it.  Once NASA--or more likely the private sector--finally abandons that route, what was impossible will become easy.  --I only fear that the meme of space's inaccessibility will prevent us from ever building the launch infrastructure that will prove it wrong; at this point, the meme looks like it's turning into a self-fulfilling prophecy.

After all, when I was ten years old it was obvious that Mars would be humanity's next destination.  And that was thirty-seven years ago.

Sep 20, 2009

Things may be about to change

...In a big way

While our attention was elsewhere, a truly earth-shattering change has been in the wind--a development most experts have dismissed as impossible, but which now increasingly looks like it is going to happen.

According to Lyle Dennis over at the AllCarsElectric blog, EEStor has applied for certification from the Underwriter's Laboratories for its ultracapacitor technology. If this is true, then the secretive company may really have succeeded in creating the ultimate in electricity-storage technology:  a device capable of running your car for hundreds of miles on one charge, and of recharging in under five minutes.  A device that is not a battery, and hence never wears out.  A technology that would make intermittent power generation sources such as windmills directly competitive with baseload generation sources such as coal.

Canadian electric car company Zenn Motors has licensed EEStor's technology for a soon-to-be-built fully electric sedan.  Zenn is betting the farm on EEStor, and they seem remarkably confident.  Naturally, we hear outrageous claims about new technologies nearly every day; and many industry watchers have been skeptically tracking EEStor for years.  The expectation has been that any day now, the company would disappear, and its executives would later be found living high off the land in Ecuador or somewhere.  That hasn't happened, and now the company appears poised to release an actual product--according to Zenn, by the end of the year.

If it happens, this will be a truly disruptive change.  It would be nothing less than the first nail in the coffin of the fossil fuel age.

And here's more on the developing story, from Zenn's point of view.

Jul 29, 2009

The missing research program for space colonization

Filed Under:

We've spent decades studying the effects of zero-gravity on the human body, when we should have been studying something else

As the Shuttle age draws to a close, there seems to be revived discussion in the media about where manned spaceflight is headed next.  The short answer is, of course, "nowhere," but we still see enthusiastic articles about returning to the moon, or visiting Mars.  The problem is, if you look at budgets and research programs, it quickly becomes clear that nobody's really interested in either of those objectives.

For instance, if NASA were actually interested in putting people on, say, Mars, for extended periods--or on the moon or indeed anywhere but low Earth orbit--they would logically have long ago embarked on a research program to learn what the biological effects of Martian or lunar gravity are.  Instead, they've invested decades and billions into learning how humans react to zero gravity--an almost useless scientific endeavor, because the clear lesson from the start of that program was that living in freefall is a bad idea.  Conclusion:  whenever people are going to spend more than a few weeks in orbit, provide them with artificial gravity in the form of a rotating spacecraft.  There's no reason not to; the technology involved in spinning things around is not actually rocket science.

No amount of data about how the human body reacts to zero-G is going to answer the important question, which is:  how does the human body react to extended periods under fractional gravity--like the moon's 1/6 G or Mars's .38 G?  If there's a potential show-stopper to colonizing other worlds, it's going to be how our physiology responds to fractional gravity, not zero gravity.

At what gravitational level does osteoporosis start in human bones?  What's the minimum level for maintenance of cardiovascular health?  At what level do embryonic and infant development begin to suffer?  Maybe these questions can be tentatively answered from studies in zero-G, but any conclusions reached that way need to be empirically confirmed.  In other words, what manned spaceflight needs as its next step is a variable-gravity research station.  The ISS is useless for learning what we really need to know; what's needed is a very simple, rotating station whose gravity can be tuned up or down to simulate life on worlds ranging from Mercury to the moon to Mars, or Ganymede or Titan.

It's pretty clear that NASA's not interested in doing such research.  There is an opportunity here, however, for the private sector to step in.  Once Robert Bigelow's inflatable space stations come onto the market, someone could attach one to a spent booster stage and rotate the ensemble.  They could then do the necessary experiments and sell the results to NASA or, say, the Chinese, who are sure to be interested.

I'm going to add this item to my list of things to do if I had a billion dollars.    But as long as the world's space agencies lack a variable-gravity station, you can be sure they're not actually serious about establishing a human presence on our neighboring worlds.

Apr 16, 2009

Solar power sats get real; and more on the Verne gun

Lighting the fuse and running away

Solaren corporation has signed a deal with Pacific Gas & Electric to orbit a 200 megawatt solar power satellite by 2016.  I mention this not because the news is amazing (it was inevitable, really) but because their plan gives me some nice numbers to plug into my Verne gun calculations. The Verne Gun

You might remember my enthusiasm over Next Big Future's recent discussion of Project Orion and the spinoff notion of using nuclear bombs to loft very large payloads into space (wheeee!).  I called this idea the Verne gun in a feeble public relations attempt.  Anyway, Brian Wang's calculations over at NBF gave a figure of 280,000 tons as the lift-capacity of a single 10-megaton bomb.  At the time, I suggested using ten or so of these suckers to lift an entire continental powersat infrastructure into space.  But I didn't have hard numbers about how much mass equaled how much power.

Solaren have conveniently stated that their 200 megawatt, self-assembling power transmitter could go up in five launches of 25 tons each.  Solar power satellites are far more efficient per-solar-cell than ground-based plants, so they have a much smaller industrial footprint and almost no environmental footprint at all.  They run 24 hours a day.  So that means that the engineers at Solaren can do 200 megawatts of baseline power with 125 tons orbited.  To put it another way:

1 gigawatt baseline power = 625 orbited tons

Launching this much mass using conventional rockets is expensive, but obviously not entirely out of line, or they wouldn't be doing it.  But, here's a question:  how much baseline power (97% uptime) could be orbited using a 10 megaton Verne shot?  The answer: 448 gigawatts.  

The United States currently uses 4 terawatts of power per year.  About half of that is coal.  So four firings of the Verne gun could orbit enough power to obsolete the entire American coal-power system.

The big problem wouldn't be radiation from the launches (which would be effectively zero) but the astronomical insurance costs attendant on putting so many eggs in one launch basket.  Maybe a few dozen 100 kiloton shots would be better...

 

Mar 07, 2009

So here's the plan

Conquering space in two easy steps

Further to the discussion about Brian Wang's treatment of Orion and its offshoot, the Verne gun, if you look at the comments to my previous post, Adam Crowl suggests that peak acceleration for Brian's gun would be about 3700 gravities.  He also suggests ways of reducing that, primarily by using a nuclear charge to energize hydrogen gas and have that push the ship.  (I'm not sure that's the most efficient way to go, though, because the Orion design depends on the efficiency of energy transfer to the pusher plate and requires close proximity to the charge.)

In any case, this figure of 3700 g's suggests something: some things would be able to take it (like hardened electronics, tight rolls of thin-film solar cells, and liquids like water or rocket fuel) but others (like people and furniture) would not.  In one of Brian's latest posts, he talks about the Mercury laser, which might make practical laser-initiated fusion happen.  This piece makes me wonder what the total mass of the system minus the supporting building structure would be (because that bears on how practical it would be for fusion powered spacecraft) but also reminds me that laser launch systems have only been waiting for this one development to become practical. 

So here's the plan:  launch a few hundred thousand tonnes of rugged stuff using the Verne gun, and send up the rest a tonne at a time using a laser launch system.  You can even run the laser launch system off renewables if you want to be green; and after the first few launches, you end up running it off beamed power from the first solar power sat you put up.  True bootstrapping through hybrid launch technology.

Mar 06, 2009

A sabot for the Verne gun

Further to the previous post: how to avoid 10,000 g's of acceleration

I have to admit I got a bit ahead of myself in the post below, in which I renamed the nuclear cannon the Verne gun and described some of what you could do with it.  As it stands, the idea would only work for cargoes that could withstand tens of thousands of g's of acceleration---which in practice would amount to fuel, raw iron and a few other simple items like that.  Still valuable to orbit, but a bit limiting.

So, here's a proposal to refine the idea a bit:  the sabot.  In this variation of the Verne gun, you don't try to reach escape velocity.  The blast that sends up the ship only needs to loft it about 100 kilometers---above the atmosphere, but not into orbit.  The bulk of the ship's mass is in fact acceleration padding--a sabot or shell around a more conventional rocket-powered craft.  After an initial acceleration (still on the order of hundreds of g's at least) the sabot separates from the cargo at 100 kilometers, lightening the load and permitting the contained rockets to fire.  This lighter craft then enters orbit under rocket power.

An alternative to rockets would be to catch the ship at the top of its trajectory using an orbiting tether (a huge one, if we're catching tens or hundreds of thousands of tonnes!).  In either case, the acceleration shielding for the initial launch falls back into the ocean and what enters space is pure cargo.

Using a sabot might allow us to launch more fragile cargoes than the straight shot version.  I now doubt that you could launch, for instance, solar power sats without a sabot, though sending up a space elevator would probably still work.

Toby Buckell informs me, by the way, that Niven and Pournelle used the idea of the nuclear cannon in their alien-invasion novel Footfall.  Let's get precedent straight here---as far as I know, they did it first in science fiction.

Mar 04, 2009

The Verne Gun

Kickstarting the REAL space age

The Verne GunRecently I talked about one of my favourite blogs, Brian Wang's Next Big Future.  He and his team are a veritable fountain of ideas, and this week they've outdone themselves with a series of pieces on Project Orion and its offshoots.  Now, I freely admit that they've done all the heavy lifting here (so to speak) but I'm going to take one of their ideas and run with it anyway.

A couple of the salient posts on Project Orion are The Nuclear Orion Home Run Shot, and Pieces of a True Nuclear Cannon.  Now, Orion was the 1950s-era American project to build a nuclear-bomb powered spacecraft.  Three facts stand out about the project:

  1. It could have worked, and would have put unlimited amounts of mass into space for less than $1 a kilo.
  2. The biggest vessel contemplated by the Orion team would have weighed 8 million tonnes, and would have been bigger than the Great Pyramid.
  3. The sucker wouldn't have incinerated, flattened, and irradiated nearly as much real estate as you might think.

Still, for some reason the project was canceled around 1964.

In contemplating the glory that almost was, it's tempting to imagine what could have been accomplished with Orion.  One thought I had was that, well, maybe you could just use it once:  do the full-out 8-million tonne monster and use it to launch, in one shot, enough solar satellite infrastructure to obsolete every North American coal plant overnight.  According to a rational moral calculus, if Orion works it should be used in such a way, because the number of people who would die worldwide from the beast's fallout would be trivial compared to the number saved by reductions in air pollution from coal.  (Three million people die from air pollution each year; what they point out over at Next Big Future is that Orion could be calibrated to limit its fallout deaths to no more than a few dozen per launch, even for the biggest ship).

Still, there would be some place on Earth that would suffer from such a launch, and one thing we've learned is there is no truly "empty" land.  Even if our moral calculus could be extended to other species that would be saved by greening our power, it would be better if there were some way to launch such huge masses without exposing the biosphere to nuclear explosions and fallout at all.

There is.  I call it the Verne gun because frankly, a name like THE ATOMIC CANNON would just not go over well in certain circles.  In any case, the principle is the same as Verne's original idea, but using modern technology:  you set off a nuclear charge underground where the blast, heat, radiation and fallout can all be contained, and use Orion-type technology to direct its energy into orbiting a very big, very heavy spacecraft.  This vessel would experience hundreds to thousands of g's of acceleration--you couldn't put humans in it.  But Wang calculates that a 10 megaton bomb could put 280,000 tons into orbit with zero radiation escape into the biosphere.  Since dozens of bombs were exploded in exactly this way from the 50's to the 70's, we know this can be done.  And Orion's researchers proved nearly every one of their theories about Orion.  What they couldn't test at the time can now be simulated accurately by today's supercomputers, without the need for a test program.

Such an orbital gun could be used multiple times.  Here's what you could do if you could put 280,000 tons into orbit in one shot:

  • Put 1.5 terawatts of clean solar power into orbit with less than ten launches.  Obsolete coal and petroleum power production with green baseline power, using less than a 10th the number of solar cells as you'd have to install on Earth to capture the same amount of sunlight.
  • Orbit an entire space elevator with one launch.  Set it up, retire the gun, and get on with a clean space age.
  • Do the same thing with an orbiting greenhouse infrastructure.  Drop solar-powered mass drivers on the moon to feed a continual stream of building material to the building sites.
  • Orbit fuel depots to drop the price of conventional rocketry to orbit through the floor.  One shot and access to space for NASA becomes 10 times cheaper.
  • Send up a telescope so big that it can image the continents of planets circling other stars.
  • Put up one or more of those cool gigantic orbiting space station wheels that are showcased so dramatically in the movie 2001:  A Space Odyssey.
  • Send an entire colony's worth of material to the moon or Mars.  With a second shot, put up an interplanetary cycler ring, tether launch system or other permanent mechanism for shuttling people to and from the colonies.
  • Toss a couple hundred thousand tons of nuclear waste into the sun, where it won't bother us anymore.  (Trust me, the sun won't notice.)
  • Launch an empty Orion ship, send its fuel up the safer space elevator, and send an expedition to Saturn, or a probe to the next star.

I'm not going to suggest orbiting a sunshade to head off global warming, because that's no solution for problems like ocean acidification.  --In any case, you can certainly think up other cool stuff we could do; and notice that some of these options, like orbiting fuel depots or a space elevator, can easily bootstrap us out of having to use the gun more than once or twice.

Oh, and of course, there's one more thing you could do with it, but since you'd need to get signoff from all the members of the nuclear club to use it at all, this one's a bit less likely:

  • Orbit a huge frikkin death star platform with ATOMIC LASERS and MISSILE RACKS and RAIL GUNS and aim them at anybody you don't like.

 

Feb 17, 2009

Cat out of bag

Filed Under:

...Yes, the Canadian army has hired me to write a sequel to Crisis in Zefra

The Halifax Chronicle Herald has an article about the military's new future-oriented analysis, and how I'm going to be writing a novelization of the material, just as I did for Crisis in Zefra several years ago.  Public reaction seems to range from supportive and admiring to derisive and outraged (as in, 'they can't even tell what they're doing next week, how are they going to look thirty years into the future?')  

Apart from the fact that I'm getting paid to do this, I think it's a good idea for other reasons:

Most businesses and governments only look ahead a few months, Mr. Schroeder said.

"That’s like painting your windshield black and driving out on the highway, as far as I’m concerned. You need to be able to look as far ahead as you can, even if it’s foggy and you can’t quite make things out."

In other words, foresight is responsible management every area of endeavour.  And don't forget, it was the difference between planning for the last war and planning for the next that led the French to build the Maginot line, and the Germans to develop the Blitzkrieg.

Jan 21, 2009

20th Century finally ends

Filed Under:

I want to congratulate all my American friends on the inauguration of Obama!

For me, the thing that decisively signals a split between old-style politics and something new, is President Obama's reluctance to give up his blackberry.  In retrospect, it's astounding that someone in such a position should not have personal access to instant messaging of this kind.  It suggests that there are always filters around the president--i.e. that someone else is filtering his view of reality--and limiting his ability to act.  The presence of 21st century tools in the White House would be highly significant; as I wrote in Lady of Mazes, "technology is legislation."  Technologies like instant messaging are likely to have a profound impact on process that, at least in the near term, is almost certainly going to be attributed to other causes.

The fact is that you haven't just elected a president.  If he gets to keep it, then you've also elected a blackberry; and nobody yet knows what that is going to mean.

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