Friday, December 16, 2011

Techniwockle Confoogalities



It's crunch time at the day gig. I should come up for air in a week or so.

Friday, December 02, 2011

Election 2012 Preview: Handicapping the Primaries, Part IV

One month and one day from today, the Iowa caucuses mark the official kickoff of the 2012 election season. The race has been going full-tilt for about six months now, but this will be the first time that actual voters will be able to weigh in on who they think should contest the Presidency in November, 2012. The time for prognosticating will be mostly over, and we'll actually have real results to chew on. So, for the last time before the voting starts, let's see how the wagering community sees it. (As before, all data from Intrade, current as of Friday afternoon.)

Democratic Party: I'm only including this because I'm a stickler for completeness. By now, it ought to be blindingly obvious that the Obama/Biden ticket will be up for re-election in November.

Barack Obama, 93.5%: In this case, "blindingly obvious" doesn't quite amount to 100% just yet. But that's because you have a few adventurous folks, who are taking a long-odds flier on...

Hillary Clinton, 6.1%: Can't blame 'em. At that price, you'll make over ten for one, if it happens. Which it won't. As I've said earlier, eligible sitting Presidents who want the job never lose renomination. It just doesn't happen.

Joe Biden, 0.6%: Now there's a long shot for you. But sorry, that's money you'll never see again. See above.

Republican Party: And here's where things start to get interesting. We've had several candidates surge, and crash, in succession. First Trump, then Bachmann, then Perry, then Cain. Now ... well, let's not get ahead of ourselves.

Mitt Romney, 48.2%: Romney has held a fairly steady lead, but his lead is eroding. In the early debates, he really did look like the only adult in the room. Unfortunately, he also looks uncannily like a collaboration between MIT's artificial intelligence lab and their cybernetics department. That is, he looks like a human, talks like a human, but doesn't quite pull off the imitation convincingly. On top of that, a fairly sizable chunk of the Republican electorate has serious misgivings about his religion. This is, and isn't, a head-scratcher for me. On the one hand, I've had Mormon neighbors, and you just won't find any better. On the other, I've talked to Baptists who are convinced that Mormons aren't Christians. In this case, ultimately, the latter will trump the former. Maybe Romney can overcome this, but probably not.

Newt Gingrich, 36.0%: And here we have the "not-Romney" flavor of the month. This honestly surprised me. As late as July, Gingrich was down to 1%, and I'd counted him DOA. With my trusty 20-20 hindsight, I can see that he's taking a few cues from the John McCain playbook, who was similarly left for dead in the summer of 2007. Gingrich is a lot of things, stupid isn't one of them. Dude's got an earned doctorate in history. He wasn't quite good enough to earn tenure, which is why he entered politics, but he's no dullard. He's a thoroughly bad man, but not a dumb one. And he's cresting at just about the perfect time. A win or place in Iowa and/or New Hampshire, plus a win in South Carolina, sets him up nicely for February and March.

John Huntsman, 5.8%: This is about where he started back in March. He's been lower, and he's been higher, but his campaign really hasn't gotten a whole lot of traction. But I'm convinced that he's really positioning himself for 2016. Oh, he'd take the 2012 nomination if it came his way. But look at what he's saying. He's positioning himself as the man who was right, when the rest of the candidates had gone stone barking mad. Look for him to check out fairly early, and resurface sometime in 2014.

Ron Paul, 4.5%: Ron Paul, on the other hand, will give up the race when they strip it from his cold, dead hands. He'll tell you that he wants to be President. And he's probably sincere in that. But, part of the point is that the campaign trail is a bully pulpit for issues near and dear to his heart. And that's fine. I'll drink a toast to his health. I don't agree with him on most things, but society needs its professional heretics.

Rick Perry, 2.3%: Oh, dear. The voting age has been 18 since I started elementary school. He's had plenty of time to learn that little fact. But, evidently, not enough time. If the governorship of Texas were a real job, I'd be concerned. But it's not, so we're OK. Consider Governor Perry to be the comedy relief for this campaign season.

Michelle Bachmann, 1.4%: Bachmann is up about half a point from mid-October. I still think she might get a bit of a spike out of a strong showing in Iowa, which is still a non-trivial possibility. But no one outside of Iowa will vote for someone with Marty Feldman eyes. So, she'll probably punch out before March.

Herman Cain, 0.6%: By the time you read this, he will probably have withdrawn. I was sure that his candidacy would come unglued when the campaign swung into the South. I had no idea it would come unglued because of his ... vigorous extracirricular activities. Seems like there's one every year, doesn't it? And it's an equal-opportunity failing, too; it was Edwards last time around. Take a note, gentlemen: there are problems you will never have, if you stay faithful.

And the winner is... By party, the Democrats are ahead 50.9% to 46.5%. By individual, Barack Obama leads the pack at 50.8%. Two factors weigh somewhat in his favor. One, unemployment is on the way down. It's still not good, but it's below 9% for the first time in a long while. Going into the summer, the things to look for are unemployment rate, gas prices, and the general tenor of the foreign situation. While they don't look great, they're trending OK so far. Plus, Intrade is showing a 30% probability that some damn fool like Trump or Palin will mount a third-party bid. This probability goes up if Romney ends up with the Republican nomination.

As I've said before, I'd still put a couple of bucks on Obama/Biden for the win. The odds are tightening up, but if you can find any takers, go for it.

The primary season starts in earnest on January 3, 2012. Vote early, and vote often!

Friday, November 25, 2011

The Future Is ...

"The future is here. It's just not evenly distributed." -- William Gibson

I've said before that predictions aren't something I ought to do very often, because I normally don't do them very well. And when we're talking about things like who's going to win an upcoming election, or which players will do well this season, that's a good rule of thumb. But today, I'm going to talk about technological trends. The future holds both wonders and horrors, and most of both are already with us in some form or another. Specifically, I'm going to be talking about the implications of a piece of modern technology that many of us already carry with us on a daily basis: smart phones.

This is part of what Gibson was talking about: the future is already here, it's just not uniformly distributed. The modern cellular telephone is still called a telephone, when in reality it's a palm-sized computer that has a telephone function. It can also send and receive text messages, e-mail, and function as a web browser. It can hold a small library of books, movies, and music. And it can function as a calculator, stopwatch, camera for both still and moving images. And a map. Never forget the map. We are raising a generation that has no clear idea of what it means to be involuntarily lost. In their mental universe, we've always been able to reach up into space and pull down our exact location.

However, that's just a drop in the bucket. The bottleneck, the thing that keeps these devices from being more pervasive than they already are, is the interface. There's a limit to what can be done with a few square inches of screen space.

We are about to transcend those limits. Researchers at the University of Wisconsin are designing an optical display that can fit within a contact lens. This means that future smartphones will be able to paint their displays directly upon your field of vision. The implications of this are immense.

You've heard of "virtual reality." This isn't it. This is something I've heard called "augmented reality." It's your world, with more information. That's both a good thing, and a bad thing. First, the good.

Right off, let's take a look at that turn-by-turn navigation feature that you hardly ever use while you're driving. Augmented Reality makes this far more useful. Instead of a tiny map that you cannot use safely while driving, you get a green line pasted on your field of view, telling you in no uncertain terms where you need to turn in order to get where it is you want to go. Merely asking, "How do I get home from here?" results in a path popping out in front of you, leading the way. And since you'll probably be able to use your fingers as a pointer, you can frame questions about anything you can point at. Asking "What is that?" can tell you anything from what species of bird that is, to what kind of airplane, to where that specific flight came from and where it's going. (Most UFO sightings will be disposed of within seconds.) You'll be able to see weather alerts, if you want to. It's already just about true that any of us with an internet connection can find the answer to just about any question whose answer is known, in the future that answer is available by voice query, and can be immediately displayed in front of your eyes, anytime, day or night.

But, it's not without disadvantages.

A horrifying new dimension of message spam opens up, when a hacker can hijack your visual display to force you to see anything they want you to see. Going by the contents of my spam bucket, most of this will be advertising for products you shouldn't mention in a family publication. Some of it will consist of more innocuous advertisements, say, a blurb about coffee when you walk past a Starbuck's. Others will be pranks played on you by ... friends. And we all have at least one friend like that, with a wildly inappropriate sense of humor. Worst of all, closing your eyes may not even block it out, depending on exactly how these things work. Personal data security will be of paramount importance, unless you like the idea of being bombarded with horrifying images on a fairly constant basis.

Further, an entirely new etiquette will have to be developed to account for this. We're already heading down that road, establishing when it is and isn't appropriate to use cell phones. However, things change when you no longer have to be looking at the device to interact with it. The guy who looks like he's politely paying attention may be doing nothing of the sort. He might be watching Casablanca. He might be playing Call of Duty. Unless you can tap the data stream, you have no way of knowing. I have no idea how we'll sort that out. But we'll have to figure it out once we get there.

And we will get there. The advantages so far outweigh the drawbacks that we won't be able to avoid it. There are parts I'm really looking forward to, and parts that I'm dreading, but on the whole it's a huge opportunity. Opportunity for what, we just don't know yet.

But it'll be fun to find out.

Friday, November 18, 2011

Video Del Fuego, Part XLIX

On November 4, 1979, a group of Iranian students (possibly with the backing of the revolutionary government, possibly not) took over the United States Embassy in Tehran. The Americans were held hostage for 444 days, until January 20, 1981. During their captivity, there were at least two plans made for a rescue. One is well known, the other less so.

The one that just about everyone's heard of is Operation Eagle Claw. Eagle Claw was a complex operation, involving eight RH-53 helicopters and four C-130 Hercules transport aircraft, three of which were carrying fuel for the return trip. It required close cooperation between elements from the Army, Navy, and Air Force. It also required a bit of luck with weather. The close cooperation worked tolerably well enough. The weather ... didn't. Eagle Claw ended in disaster when one of the helicopters collided with one of the tankers while they were preparing to abort the mission anyway, because they didn't have enough mechanically-fit helicopters to complete the mission.

But that wasn't the end of the matter. They had one more trick up their sleeve. One of the problems with Operation Eagle Claw was that it relied on too much coordination. They decided to simplify matters by using only one aircraft, staging the mission out of the continental United States, using multiple in-air re-fuelings on the way to Iran, and meeting up with a nearby aircraft carrier. The aircraft they chose was a C-130 Hercules, and they would land inside a soccer stadium close by the American Embassy.

"Now hold on a second," I hear you saying. "You can't actually do that." Well, not with a stock C-130, you can't. But this one? It's been modified. Ladies and gentlemen, behold Operation Credible Sport:



Yes, someone looked at a C-130 airframe and said, "You know what this thing needs? Rockets. A whole bunch of rockets." One set of rockets to soak up the high rate of descent. Another set of rockets to slow the beast down once you're on the deck. And a third set of rockets, to kick your butt back up skyward when it's time to leave. Oh yeah, this would have gotten the job done.

Except that, on the last test flight, some damn fool hit the switches out of sequence. Believe it or not, everyone made it out of there. With that much explodium on board, you'd better believe they had a fire truck close by.

But for that, the hostages might have been home by early November. As it was, on November 2, the Iranian parliament accepted an Algerian mediation plan, and a few days after that, Jimmy Carter lost his re-election bid. The plan was shelved after that.

And by the way: landing a C-130 on a carrier was the least crazy part of this plan. It had been done before, in 1963.

Friday, November 11, 2011

Sesquicentennial, Part XVIII: Foreign Affairs

--FIRST -PREV NEXT-

In the modern era, we're accustomed to fast-moving, quick-paced conflicts. The interval between the initial invasion of Iraq and the fall of Baghdad in 2003 could be measured in weeks. The interval between the beginnings of unrest in Libya and the death of Quaddafi could be measured in only months. This, you have to understand, is a fairly new development, especially in American military history. Specifically, it was a response to what happened in the 1973 Arab-Israeli war. One of our take-aways from that conflict is that we wouldn't have time to gear up for any future conflict ... and the new watch-words became "come as you are" and "win the first fight." We appear to have more or less learned the lesson.

But in 1861, we were still over a century away from that revelation. The fall of 1861 moved very, very slowly. This was a deliberate pause on both sides. One of the things clear to everyone after the Battle of Bull Run was that no one was really ready for any of this. Everyone needed time to raise, equip, and train fresh troops. A whole lot of fresh troops.

The Union wasn't having a tremendously difficult time doing any of this. To raise and outfit an army, you need a supply of manpower, ready cash to buy weapons and ammunition, more ready cash to expend ammunition in training, and skilled men to lead and direct the training of your new troops. The Union ran down its list: Manpower? Check. Cash? Check. More cash? Check. Skilled men? Well, sort of. But still check.

The Union was beginning to shake out its pre-War old guard. Some of the retirements, if somewhat unfair, were also necessary. Lieutenant General Winfield Scott, the Army's commanding general, was an old man, and not in the best of health to begin with. If he were younger and more vigorous, he'd probably be the man for the job; but young and vigorous he most assuredly was not. His retirement was expected, and surprised no one. As his replacement, Lincoln selected the brightest of his rising stars: General George McClellan. His earlier success was one of the few bright spots for the Union so far. And if there's anything a former railroad engineer knew, it was organization. And it does have to be said: that fall and that winter, General McClellan molded the broken, dispirited soldiers that slouched around Washington into a tight, disciplined unit: the Army of the Potomac. And he strengthened the defenses surrounding Washington to the point that the Federal capital was now the most heavily-fortified city on Earth. Whatever else you may have to say about General McClellan, you must give him credit for laying the groundwork and forging the tools. He was, in many ways, a perfectly splendid officer.

Down South, a similar story was playing out. The Confederates had the same four needs for army-building. And they ran down the same checklist: Manpower? Check ... for now. Cash? Check, with the same proviso. More cash? Well, we may have to get back to you on that one. Skilled men? Oh yes, plenty! But, without arms and ammunition, what can they do?

The Union blockade was beginning to pinch the Confederacy's coffers. They had virtually no native industry of their own. They knew this going in. Their big plan all along was to gain enough support abroad, from foreign merchants who needed their cotton, so that they could use a powerful foreign fleet to force the Union blockade aside. At which point, they could buy all the arms they needed from the English and French. But ... that consummation was still a long, long way from being concluded.

England, you see, wasn't exactly eager to leap into a military alliance with the Confederacy.

Oh, there's one reason why they might. It'd poke a sharp stick in the Yankees' eyes, and no mistake. London might well be up for that. But, there were two issues lurking in the background that cloud those waters. First, as we said before, war with the Union would mean war with the US Navy. It's a war England would probably win, but it would cost. England wasn't eager to pay that cost. And secondly, the Confederacy was explicitly a slave power. There was an organization in London, the Anti-Slavery Society, headed by a German immigrant named Albert. Ordinarily that would have meant little. But, since Albert's wife was Victoria, by Grace of God Queen of England, Scotland, and all the rest; it mattered a great deal indeed. What the Sovereign wants, the Sovereign tends to get; and Prime Minister Palmerston was going to have to have an outstanding reason if he was going to go before her and ask her to support a slave-holding Power.

The Union damn near gave it to him.

William Yancey, the current Confederate representative in London, was sick and unable to fulfill his duties. So, President Davis had to appoint a couple of replacements: John Slidell of Louisiana and James Mason of Georgia. Their job was to get as much support, official and unofficial, as they possibly could. A direct ship to England couldn't be had, so they made their way out to where they could catch a ship for England. Originally, they made for the Bahamas, but they'd missed an England-bound ship by mere days. Then they heard that an English mail ship would be leaving Cuba soon. So, they sailed for Cuba, and got a ride on the RMS Trent. At that point, they thought they were safely England-bound.

It's more or less at this point that the USS San Jacinto intervenes, and stops the Trent for a cargo inspection. And by "cargo", I mean Messrs. Mason and Slidell, since the captain of the San Jacinto had heard while he was laid up in Cuba following an Atlantic patrol that two Confederate ministers were England-bound on the Trent. (Did anyone bother keeping secrets back then?)

Now, strictly speaking, Captain Wilkes had no legal right to stop the Trent. This seizure was a violation of international law. But, Captain Wilkes took it upon himself to detain the Trent and its passengers, so as to disrupt the Confederacy's diplomatic efforts. It apparently escaped Captain Wilkes' calculations that such an action might well enrage England, and provoke them to enter the War on the Confederacy's side.

This mess would take several months to unwind, over the winter of 1861-1862. Several times, things looked like they might flare up into open war. But, owing to skillful diplomacy by President Lincoln and his ambassador in London, Charles F. Adams, no such war took place. England did embark on a naval construction program. They did strengthen their garrison in Canada. But, after an admission of wrongdoing that wasn't really an admission, Mason and Slidell were released from custody and allowed to board a Royal Navy ship in Provincetown, Massachusetts. So, Captain Wilkes merely delayed the two men for six months or so.

In the end, very little changed. The Confederacy wasn't going to get the recognition it wanted, not yet anyway. But, they did win one key concession from the British: recognition of the Confederacy as a belligerent party. While this meant nothing as far as Her Majesty's Government was concerned, it meant that Confederate ships could use British ports to re-provision, and they could contract with private suppliers for arms and munitions.

Half a loaf was better than none. The Confederacy would have as much arms as it could buy and smuggle through the Union blockade. That would allow them to field an army. For how long, no one knew yet. President Davis hoped it would be long enough.

Friday, November 04, 2011

It's About Time

A while back, a group of physicists at CERN reported a remarkable result: they had observed a beam of neutrinos traveling faster than light. Which, near as we can tell, ought to be impossible. They are currently attempting to repeat their experiment to verify their results, and are also looking into possible measurement errors.

One recent rebuttal was interesting. They claim that, if they really were moving faster than light, they ought to have shed energy in the form of specific particles, which the CERN experiment did not detect.

Another theory holds that something that's moving faster than light is also moving backwards in time. Leading to the physicists' joke: "We don't serve faster-than-light neutrinos here," said the barman. A neutrino walks into the bar. I'm not sure I buy the theory, but then again, I pretty much hate time travel in all its forms.

Another competing theory caught my attention: the neutrinos only seemed to be traveling faster than light, because the laboratory used GPS satellites as a time reference. Since the satellites were also moving with respect to the experiment, that motion also has to be accounted for, leading to a margin of error that almost exactly covers the gap.

"Now, wait one second," I can hear you saying. "GPS satellites are used to find where you are. What do clocks have to do with it?" Everything, my friend. Everything. The clock is by far the most important thing a GPS satellite carries. It's the key to the whole process.

You see, one of the things we think we know about the Universe is that light always moves at the same speed. We're fairly sure about that. At least, we haven't been able to design an experiment to disprove that fact. So, if you have two clocks, and Clock A broadcasts a time signal to Clock B, then the difference between Clock A's time at arrival and the received time from Clock B tells you the instantaneous distance between the two clocks. With me so far?

Now, each of the GPS satellites is continually broadcasting two pieces of information: an identifier, and a time signal. The identifier tells you which satellite it is, and that information plus your current time should tell you where that satellite ought to be. So, once your GPS receiver gets a signal from Satellite A, it compares the broadcast time with the current system time, and computes a distance. Using that distance, and the satellite's position, it figuratively draws a circle on the globe. You're somewhere on that circle.

That's not enough. So, it looks for a second signal. If it can find Satellite B, it compares Satellite B's broadcast time with the current system time, converts that into a distance, and draws another circle on the globe. Now, those two circles intersect in at most two places. So, you're at one, or the other. You still don't know which.

Well, that doesn't really work, either. So, you need a third signal. Now, it looks for Satellite C, and does the same thing. It compares times, finds a distance, draws a third circle ... and now, if the Earth were a perfect sphere, all three circles would meet in harmony in one and only one place. But the Earth isn't a perfect sphere. It's not a perfect anything. It's awfully damned lumpy. So...

So it looks for a fourth signal. Once it finds Satellite D, it goes through the same process. And basically, it finds the point where all four circles more or less meet up. And hey presto, you know where you're at. And, if you have a relatively new unit, it'll also tell you that you need to take the next exit to get to your Aunt Sally's house. Oh, and you need to pick up a loaf of bread and some eggs while you're at it.

But, mad scientists being the innovative chaps that they are, they found a new and interesting "off-label" use for GPS technology. Why worry about synchronizing your clocks if the U.S. Department of Defense has already gone to the trouble of synchronizing one for you? Well, now we think we know a good reason: because it's whizzing around the planet at 17,500 miles per hour, that's why. And if you don't take that into account, weird things might happen.

Although the jury's still out. Weird things might still be happening. We won't know until the re-test is over. Measurements talk, and we just don't have enough of 'em yet.

Still, we should know something in six months or so. Keep your fingers crossed.

Friday, October 28, 2011

What Might Have Been, Part III

Forty years ago, when they were drawing up the plans for the Space Transportation System, the original plans called for a flight rate of about fifty times per year. About the most we ever managed on a consistent basis was six. Something doesn't quite add up, here. What went wrong?

Well, one thing that went wrong is that there was never enough traffic to justify a fifty-per-year sortie rate. And another thing that went wrong is that it takes about three to four months to turn an orbiter around for re-flight. Early turn-around estimates were wildly optimistic. Now, we could have achieved a fifty-per-year sortie rate. But we would have needed more orbiters. With each orbiter flying at most four times per year, you need at least fifteen orbiters to keep the flight rate up.

The additional expense of those orbiters probably isn't as much as you're thinking. A large part of a Shuttle's price tag came from the fact that we had to amortize the entire RDT&E budget over five units. Six, if you count Enterprise. Similarly, part of the reason that a Bugatti Veyron cost $2 million and a Toyota Camry costs $20 thousand is that only 200 Bugatti Veryons were ever built, and there are about 5 million Camrys out there. Once you build the factory and tooling, the marginal cost of each additional unit isn't astronomical; and if you build enough of them, you get better at it, and the efficiency begins to show in the unit cost.

Which still begs the question: you don't need such a high sortie rate, unless you're moving a lot of cargo upstairs. Which is what went wrong with my teaser from back in May. Without such cargo volume, why pursue the matter any further?

For a couple of reasons. First, it keeps my mind occupied when I'm on the treadmill. And second, counterfactual scenarios sometimes provide a glimpse into why things in the real world turned out the way they did. So, without further ado, we're going to board the bus for Crazytown. Don't worry, we've got return tickets.

First, we go back to the year 1969. The lynchpin of the Soviet answer to Project Apollo was Sergei Korolev's giant N-1 rocket. It was about as big, about as powerful, could lift about as much stuff into space ... and it had 30 engines in its first stage. As I've mentioned before, Korolev had spent the last ten or fifteen years in a pissing match with Chelomei and also with Glushko, who was the engine expert. Korolev had to use less powerful engines, which meant that he had to use a lot of them. The first flight of the N-1 was in February of 1969, and by "flight" I mean "explosion". Getting thirty engines to play nicely together is not exactly an easy feat.

Between 1969 and 1972, three more test flights took place. The N-1 program was not officially cancelled until 1974. The Soviet Union never did land a man on the moon, but it wasn't for lack of effort. At cancellation, two N-1 rockets were still ready for test flights.

Which brings up a very interesting question, and the springboard for our counterfactual exercise: Why, five years after they'd already lost the Moon Race, were they still working on a Moon rocket?

The most likely answer is simply inertia. Soviet programs tended not to be cancelled until someone with authority looked at it and said, "Why are we still doing this?" And sometimes not even then. Voskhod 3, for instance was never officially cancelled. The spacecraft stayed in a shed, kept ready, even as Soyuz 1 was being prepared for flight.

The more entertaining answer is that the Soviets were planning a propaganda coup, by the establishment of a permanent Lunar base. There were some plans drawn up to this effect, which is another reason why the plug wasn't pulled right away when Apollo 11 was successful. Part of the reason that the project was cancelled in 1974 is that none of the tests had been successful. But the truth is, each one got a little bit closer. The fifth test flight might well have done the trick, had there ever been one.

Now, in this scenario, it's 1976. Two successful test flights prove the design, and more rockets are built. While America celebrates its Bicentennial, giant Soviet rockets are delivering payloads to a rapidly-growing Soviet base on the Moon.

What I'm trying to sell here is a scenario where Reagan, as part of his defense build -up, buys a whole bunch of Shuttles, and plays catch-up in a Moonbase race. The problem with this scenario is that it requires everyone to go crazy, in the same way, all at once.

And, at the end of the day, I just can't buy it. No part of this is plausible.

The Soviet Union cancelled the N-1 in 1974 because at that point, it was a white elephant with no useful purpose. Even if it worked, it wasn't going to do anything especially useful for them. They had decided to focus on a long-duration spaceflight program, and score their propaganda points that way. It worked, after a fashion. To this day, all of the duration records are held by Russians, except only longest flight by a woman. The point is, they had found a way to make their case at an acceptable cost in time and materials.

And for us, as I've said several times, we've proven by trial and error that the American public is willing to spend about 0.5% to 1.0% of the Federal budget on NASA, to include all of its aeronautical research programs. There was never a political case to be made for a giant program involving a moonbase in the 1980s or 1990s. Which meant that the "design" sortie rate for the Shuttle was a moot point. Part of the reason it only flew four to six times a year is that there was only enough traffic to keep it busy four to six times a year. And even so, look at the other side of the record books: the people with six or seven missions to their credit? Only two Russians on that list. The Shuttle put more human beings into orbit than any other spacecraft. That's not an achievement to sneeze at.

As we turn the page on this fine project, and as we look back at the other things we might have done in its stead, I have to say that we probably did about as well as we could have. We lost fourteen fine people. But we gained an immeasurable amount of knowledge. Only time will tell if that was a good trade. All I know is, the people who made that sacrifice believed so.

I hope -- and I also believe -- they were right.

Friday, October 21, 2011

Video Del Fuego, Part XLVIII

When Space-X recently announced their proposed Falcon Heavy rocket, one of the selling points they touted was extreme engine-out reliability. This comes from the fact that, at liftoff, the three core stages have 27 Merlin rocket engines between them. This got me to thinking. Specifically, it got me to thinking of an earlier rocket, that also had a fair number of first-stage engines.

The Soviet entry into the Moon Race, their equivalent of the Saturn V, was the N-1. The N-1 was a giant beast of a rocket, with thirty engines. I had always called that first stage a plumbers' nightmare, because of the complicated piping that I associated with so many engines firing simultaneously. It occurs that, perhaps, I was being unfair to Mr. Korolev.

And another curious thing: the last test flight of the Soviet Moon rocket was in 1974. Five years after the first American landing, and nearly two years after the last. If they'd given up on going to the Moon, then what in the world were they doing still trying to perfect a rocket for doing just that?

Therein, perhaps, lay a curious tale. In history as it actually happened, all four N-1 test flights ended more or less like this:



But what if they hadn't? What if they'd gotten all the kinks worked out? From everything I've read, they came close. One more test might have done the trick.

Maybe not next time, but soon, I'll take up the question of what might have happened next.

Friday, October 14, 2011

Election 2012 Preview: Handicapping the Primaries, Part III

Well, as I said before, prognostication is probably something I shouldn't do. My record is rather less than perfect. Still, it's fun, so I'm going to have another shot at it. Quite a lot has happened, and a few people have dropped out since the last time we looked at the race. It's still a long way to the conventions, but we've got a pretty good idea of who won't be in the running.

Democratic Party: Again, this entry is for completeness' sake only. Ralph Nader's pot-stirring notwithstanding, incumbent Presidents who still want the job always win re-nomination. Incumbency is a powerful advantage. You'd have to be a fool to throw that aside. Granted, the Democrats almost did in 1980, but it's not 1980. For the same reason, we won't see any movement on the VP side of the ticket, either. The last President who was re-elected after switching running mates was Franklin D. Roosevelt in 1944 ... and let's be honest here, Roosevelt could have had a burlesque dancer for a running mate, and he still would have won. That was a special case. These days, such a shift would be a huge display of weakness. So, no change here, it's Obama/Biden once again for Team Blue, unless one or both of them gets run over by a combine harvester in the meantime.

Republican Party: Oh dear, where do I begin? Let's just do this by the numbers (according to Intrade, current as of Friday afternoon):

Mitt Romney, 67%: He's managing a difficult dance extraordinarily well. As I said earlier, one of the biggest problems that he faces is that Obamacare is Romneycare with the serial numbers filed off, and everyone knows this. He had to find a way to credibly run against something he basically invented ... and so far, he's actually doing exactly that. An amazing feat, really. The basic thing to understand about the Romney campaign at this point is that he's not playing to win so much as he's playing to not lose. His selling points are competence and business acumen. Those are just about his only cards, and so far, he's playing them very well. He doesn't lead many polls, though, because his other problem may well be his Achilles' heel. He's a Mormon, stumping before a heavily evangelical Christian electorate. That's going to cost him. Will it cost him enough to turf him from the campaign again? Maybe, but only maybe. He still out-polls all other potential Republican contenders against President Obama. Electability may win out over religious prejudice.

Rick Perry, 11%: I've listened to Rick Perry several times in GOP Gubernatorial Debates here in Texas, and I have to ask: Who is this man, and what has he done with the real Rick Perry? Oh, I never expected him to be a debating all-star. But I never expected him to crater this horribly. Nevertheless, he'll make a strong run this coming Spring, once the campaign heads down South. This is going to be a two-way race, between Mitt Romney and "not Mitt Romney", whoever the hell that ends up being. Rick Perry still has a fighting chance to be "not Mitt Romney". But he's going to have to fight off several contenders for that slot, including Mitt Romney. (This is going to be a really weird year.)

Herman Cain, 9%: Fitting, since his signature tax plan is called "9-9-9". John Huntsman was right about that, by the way; it does sound like a pizza price. (And a pretty good one, at that.) Herman Cain leads the polls at the moment in the contentious race for "not Mitt Romney", but he's going to peak and stall pretty soon. He's ... how do I say this without sounding crass? Let's just say that his campaign will do a Titanic once the campaign goes down South. You can guess the reason.

And no one else is above 5%. This includes Huntsman and Gingrich (2%), Michelle Bachmann (1%), and Sarah Palin (under 1%). Sarah Palin has bailed out of the running for the Republican nomination, but this may not be the last we've seen of her this year. The interesting thing about the way Intrade works is that her chances will never drop to zero, even though she's dropped out. There are a number of poor slobs who bought Palin shares when they were at 7%, and didn't have to good sense to sell while the selling was good. They're stuck.

I still think Bachmann would be a good, if risky buy. She's liable to do quite well in Iowa, maybe even pulling a win. In that case, I'd expect a spike, and if you bought in at 1%, you could do quite well. But, as I say, it's risky. Bachmann may well have peaked already. She's been on a slump since debate season started. Still, if she were to climb back towards double digits, a buck or two could get you a night at the movies. (I think. I'm still not sure any real money changes hands, here.)

Palin is an interesting case. I see a scenario where she could be back in the running. Let's say that Romney does win the nomination. Let's further say that the Tea Party finds that unacceptable, and revolts. Who would be the standard-bearer for a third-party challenge? I don't see Rick Perry doing that. I don't see John Huntsman doing that. Both of them could reload for the 2016 GOP nomination, unless they burn their bridges with a third-party run. But Palin, who's already burnt her fair share of bridges, would certainly be game.

In any case, the battle for the Republican nomination will be a two-way scrum between Romney and Perry, barring a major breakout by another candidate. And the field is essentially fixed, there will be no new candidacies at this point. Either one could win. Romney's long-term position looks pretty good, and he's frankly the strongest candidate the Republicans could get out of this field. If they're smart, he's the one they'll run.

If they're not smart, or if there's a Tea Party revolt and a third-party run, we might well see the curious sight of a President, holding a bag full of 9% unemployment and lousy economy, winning re-election anyway because the opposition is either divided or too horrifying to contemplate.

I'd say stranger things have happened, except that I'm not sure that's true. As I said, this is going to be a really weird election year.

Saturday, October 01, 2011

Moneyball

My wife and I recently went to see the film Moneyball. I'm not a huge fan of baseball, but I had heard about the concept that the Oakland A's used to build a very good team on a shoestring budget. It was a very good film. I say that not because it sparked a latent interest in baseball, but because it got me to thinking about a few other things. To wit: what, precisely, will the United States do with its manned spaceflight program now that the Shuttles are going off to various museums and exhibits around the country?

I know, last time we talked about this, I promised a peek into a scenario where they might actually have reached the Shuttle's original advertised sortie rate of one flight per week. I got to thinking about it, though, and that requires a detour into Crazytown that I'm not quite ready for yet. I'll get around to that sooner rather than later, just not today.

So, we're stuck with the basic question of what to do next. And then, on the way home from the theater, it struck me. The problem all along is that we've been trying to field a New York Yankees program on an Oakland Athletics budget. And that's worked out about as well as anyone ought to expect it to. The main problem is that, ever since 1968, the long-range plans have all assumed massive budget increases that just won't happen.

It's time for a new paradigm. Taking a cue from Moneyball, I'm going to identify a couple of over-valued and under-valued "players" whose status needs to be re-evaluated. In no particular order:

(1) Heavy Lift: The question has to be asked -- do we really need a dedicated heavy lift booster? Do we need to re-create a Saturn V class rocket? I used to think so, but I've changed my mind. Dedicated heavy lift rockets are problematic at best from an economic point of view. They only make sense if you have a lot of heavy payloads going up on a fairly consistent schedule. If you only use them once or twice a year, the unit cost becomes hideous. You build and use at most ten or twenty in a decade, which means that you have to spread the cost of the factory and tooling over at most ten or twenty flights. This alone massively inflates the cost of a project that uses heavy lift. Which, in turn, makes the up-front "sticker shock" so harsh that the project never climbs up out of the planning stage. The Constellation program is only the most recent example of this. So, in our new paradigm, screw heavy lift. We're going to figure out a way to get by without it. And, with a few key enabling technologies, we can do just that.

(2) Closed-Loop Life Support: Part of the rationale for heavy lift is that interplanetary manned spacecraft need to be huge. If you have to carry all of your consumables (food, air, water) as cargo, you have to have about 30 kilograms of supplies for each crew, each day. That's just about a ton per crew per month. A minimum-energy trajectory to Mars takes nine months, and it can take as long as a year for the return launch window to open. So, at thirty months duration, we're talking 30 tons of food, water, and oxygen for each crew member. That's 120 tons for a crew of four. The largest part of that figure is water. If you can figure out how to recycle the water, you can cut that figure down drastically. Freeze-dried food and oxygen come to a little more than 1 kilogram per day. You would need a week or two of reserve water supply, but you could cut 120 tons down to less than ten. Savings like this cascade through the entire system.

(3) High-Efficiency Propulsion: Another part of the rationale for heavy lift is the fact that interplanetary spacecraft need so much fuel, not just for Earth escape, but for returning to Earth later on. Obviously, if you have more fuel-efficient engines, you don't have to haul as much fuel along with you. Taken together, these last two items make the spacecraft design much lighter. And since weight lifted into orbit is a big part of your cost, this makes the program as a whole more affordable.

(4) In-Space Refueling: That's all well and good, of course, but if you still have to lift the fully-fueled spacecraft into orbit all at once, you still need a heavy lift booster. That's where our last enabling technology comes in. If you develop the techniques for transferring fuel in orbit, you don't have to lift the whole thing all at once. You can lift the crew cabin first, then the fuel tanks, then the engines, then the fuel. And, once the ship returns from its first flight, it can be refurbished, refueled, and used again.

(5) Reusable Launch Vehicles: That's all nice, but we still have the problem of being able to get into low Earth orbit economically. Re-use is fairly important, if you want to get costs down. Operational simplicity is also important, of course, but you really want to be able to use expensively-machined components like engines more than once before dunking them into the ocean. Fortunately, we've run into a spot of luck on this score:



It's not completely reusable. But, if it works, enough components can be reused to bring operating costs down substantially. Also, the Falcon 9 core is the key ingredient for:



(Honest, I don't work for these guys. I just like their work.)

Bearing all of this in mind, where do I think we should go from here? Mainly, I think it's not really NASA's job to build a new rocket. Rockets, we've got. Good ones. What we need is for them to work on (2) through (4) above. If you've been paying attention, this is the "flexible path" option outlined in last year's Augustine Committee report. These goals ought to be achievable on a fairly modest budget. With those three things in hand, they can leverage private industry's work, and carry off an awesome program of exploration for a very reasonable price. And isn't that what we're paying them for?