Seveneves - Страница 137

137

“You have everything you need?” Ty asked. “It’ll be a long day for you.”

“It’ll go by in no time,” Kath Two demurred, “because I’ll be busy. It’ll be long for you because you’ll be bored. Did you bring a book?”

“People are my books,” Ty said. “But I did bring a couple, in case the people all go to sleep.”

It was meant as a light joke but he saw her face snag on it, wondering if he was trying to make a racial crack about Moirans. “An annoying habit that many people seem to have,” he added.

Apparently a mere two-cab caravan was not enough to trigger Ariane’s anxieties, and so the one carrying Beled and the one carrying Ty and Kath Two departed in tandem and began to work their way through streets crowded with pedestrians. They could have done the first part of it more quickly on foot, but when they passed out through the vehicular gate and into the streets of Cayambe, things opened up quite a bit and they were able to use streets that had been designed specifically for four-wheelers. The place seemed dustier than Ty remembered, or maybe he was just seeing it through visitors’ eyes. Cradle sophisticates would see its menagerie of robots as comically oversized and ramshackle, its people as a lot of jumped-up backwoodsmen. Ty’s kind of people, in other words. The sort of person whose ancestors had stayed in the habitat ring and played by the rules, patiently awaiting the moment when Doc, or some successor of his, would cut the ribbon on New Earth and allow settlers to flood in, had complicated feelings about Sooners and Indigens. On the one hand they were viewed as sharp operators. Tricksters. At the same time they were isolated bumpkins. Ty had learned early how to play both sides of the image. A stranger from the ring who took you for a wide-eyed rube would spill a lot of information before he came to understand the truth, and one who expected you to play tricks on him would let down his guard at the first show of honesty and plain dealings.

IF YOU TOOK A LARGE NUMBER OF FLYNKS — FLYING, AUTONOMOUS chain links — and joined them together into a long chain, and connected its ends to make it into a continuous loop, and then got the whole loop moving through the air like a train composed of little airplanes, each using its stubby winglets to generate its share of the lift, then you had a thing known as an “aitrain,” pronounced the way a resident of Old New York would have said “A train.” The concept was old enough that its etymology had been obscured by time. It might have been “air train” with the first r elided, or a contraction of “Aitken train.” Sometimes, as here, it was a captive aitrain, passing continuously through a fixed installation on the ground and rising from there to a considerable altitude before reversing direction and plunging back down for another circuit. But aitrains could also fly freely in the air: a technology crazy enough that it had become associated with the Aïdan big-brains known as Jinns, or Ghenis, and tended to be used only by Red.

Presumably at Ariane’s behest, they took a circuitous route to the aitrain station, swinging wide around the hangar with the big Q on its roof. The caravan collected itself in an unmarked hangar on the edge of the military zone, which Ty viewed as a classic example of the “not quite Survey and not quite military” style. There were no human personnel, just two copies of a specialized kind of grabb posted at each of the wingtips of a big glider, nominal capacity ten. Adequate room for a Seven, or so Ty thought until he climbed aboard and found it preloaded with mysterious equipment cases.

Kath Two made a slow walk around the glider and then climbed aboard, pulled the door shut, and crawled forward onto the couch where she would spend the journey resting on her belly. Everyone else looked away politely as she got her urine collection system squared away. In front of her was the glass dome, more than a meter in diameter, that served as the aircraft’s nose. Beled and Bard took opposite window seats in the back row of the passenger compartment. Doc sat in the front row, on the aisle, where he would have the best view forward over Kath Two’s backside and out the dome. Memmie sat in the window seat next to him and Ariane grabbed the seat across the aisle from him. Ty had his pick of a few seats in the midsection. He had noticed Ariane’s preference for always sitting next to Doc. Were he a jealous sort, or the kind of person who liked having long conversations with eminent scientists, he’d have resented the way she monopolized him. Instead he just found it kind of interesting, and wondered whether Doc would shoo her off at some point so that he could at long last talk to someone else.

The glider began moving around, presumably because Kath Two had told the grabbs holding its wingtips to take it somewhere. The nose tilted down as they descended a ramp into the flynk barn. This was a noisy warren in which thousands of identical robots were hustling around in a manner that looked chaotic and organized at the same time, much like the impression you’d get staring into a beehive. For an earthbound loop system like this one, the flynks had to be aerodynamic, so their inner skeletons were hidden beneath thin plastic fairings, making them into blunt-nosed cylinders, like large bullets, with a little waist in the midsection to give the universal joint freedom to bend this way and that. Each of these flynks was about half a meter in diameter and two meters long and weighed about twice what a large human weighed. Lying on the floor, they were helpless, and so grabbs moved them around by getting them aimed in the right direction and then rolling them about like barrels, creating a scene that looked a little like a swarm of dung beetles going about their work. The general point of the operation seemed to be to channel the flynks in the direction of troughs where they would naturally line up. This enabled them to couple themselves together into short segments of chain. The troughs had roller bearings that made it easy for chain segments to slide forward and back, like trains in a switching yard, and in this manner chain segments could be added to or subtracted from the aitrain while it was operating. Which was to say, while the system was shooting it straight up into the air at high velocity and sucking it back in on the down leg.

In one of those “easy for machines, inconceivable for humans” operations, a coupler on the glider’s nose ended up being snapped to the tail end of a flynk chain that presently got concatenated onto the up leg. Rapidly brought up to speed while still in the confines of the flynk barn, the glider pitched upward sharply as it emerged into the light. It began to rise vertically, drawn behind the chain. Nothing was connected to the glider’s tail — the loop had been deliberately severed — and so the system had ceased being an Aitken loop. It was now a vertical bullwhip, accelerating the glider to higher and higher velocity as the Knickstelle at its apex propagated skyward. Lying now on his back, staring straight up over Kath Two’s shoulders, Ty could see small aerodynamic vanes that had deployed from the fuselage of the flynk ahead of them. These, like all the other vanes on all the other thousands of flynks in the chain, effected tiny adjustments to keep the whip trimmed in just the right configuration. The result, a few moments later, was that the glider came snapping over the top just as its connection to the last flynk was severed. In a few seconds it had been hauled two thousand meters straight up and let go with a velocity of a few hundred kilometers per hour. Meanwhile, every other flynk in the chain had decoupled itself fore and aft, causing the entire chain to disintegrate into a linear cloud of identical fragments, each headed in a different direction. Each flynk, sensing that it was aloft and alone, automatically deployed large tail vanes that turned it from a bullet into a badminton shuttlecock. The flynks rapidly slowed down to their terminal velocity, turned nose down, and began to fall toward the ground. A slight canting of the vanes caused them to begin spinning like maple seeds, further slowing their descent, and in this manner the entire swarm began to descend in the direction of an empty lot adjacent to the flynk barn.

All of which had to be pictured in Ty’s mind’s eye, since they already had left it far behind. But he had seen it many times, as it was one of the basic operations carried out many times a day at any aitrain port. The same flynks, organized in a different way, might just as easily have effected a high-altitude rendezvous with an orbiting bolo, or collected an aircraft and drawn it back downward to safe haven in the barn.

The first half hour of the flight was a little unsettling to Ty’s stomach as Kath Two made a few sudden maneuvers, perhaps because she had sensed good air in one direction or bad in another. People who were accustomed to flight in powered aircraft frequently had trouble adjusting to the unpredictability of gliders, but Ty, who had done it before, understood that Kath Two was just hunting for the right way to inject them into the mountain wave hovering invisibly in the upper atmosphere above the Andes crest. He knew she had found it when the juking and jiving stopped and the back of the seat pressed him forward with palpable acceleration. They were in level, steady flight now, proceeding north at something like three hundred kilometers per hour. Kath Two’s task henceforth would be to look far into their future with her lidar-enhanced sensorium and make small adjustments needed to dodge pockets of rough air.

Everyone became somewhat listless and fell to reading books or napping. Sitting a couple of rows behind Ty, occupying most of a pair of seats, was Beled Tomov. He was in an attitude of repose, whitish-blue eyes half closed and unfocused, but aimed generally out the window. He was probably trying to maintain a visual fix on the horizon as a way to stave off motion sickness. In any case he did not look to be in a social mood.

137