Читаем The Fountains of Paradise полностью

When the FIRE-BATTERY COMPARTMENT Sign came on for the third time, Chang did not hesitate to reset it. A real fire, he knew, would have triggered the extinguishers; in fact, one of his biggest worries was that these might operate unnecessarily. There were several anomalies on the board now, especially in the battery-charging circuits. As soon as the journey was over and he had powered down the transporter, Chang was going to climb into the motor-room and give everything a good old-fashioned eyeball inspection.

As it happened, his nose alerted him first, when there was barely more than a kilometre to go. Even as he stared incredulously at the thin wisp of smoke oozing out of the control board, the coldly analytical part of his mind was saying: "What a lucky coincidence that it waited until the end of the trip!"

Then he remembered all the energy being produced during the final braking, and had a pretty shrewd guess at the sequence of events. The protective circuits must have failed to operate, and the batteries had been overcharging. One fail-safe after another had let them down; helped by the ionospheric storm, the sheer perversity of inanimate things had struck again.

Chang punched the battery compartment fire-extinguisher button; at least that worked, for he could hear the muffled roar of the nitrogen blasts on the other side of the bulkhead. Ten seconds later, he triggered the VACUUM DUMP which would sweep the gas out into space – with, hopefully, most of the heat it had picked up from the fire. That too operated correctly; it was the first time that Chang had ever listened with relief to the unmistakeable shriek of atmosphere escaping from a space vehicle; he hoped it would also be the last.

He dared not rely on the automatic braking sequence as the vehicle finally crawled into the terminus; fortunately, he had been well rehearsed and recognised all the visual signals, so that he was able to stop within a centimetre of the docking adapter. In frantic haste, the airlocks were coupled together, and stores and equipment were hurled through the connecting tube…

And so was Professor Sessui, by the combined exertions of pilot, assistant engineer and steward, when he tried to go back for his precious instruments. The airlock doors were slammed shut just seconds before the engine compartment bulkhead finally gave way.

After that, the refugees could do nothing but wait in the bleak, fifteen-metre square chamber, with considerably fewer amenities than a well-furnished prison cell, and hope that the fire would burn itself out. Perhaps it was well for the passengers' peace of mind that only Chang and his engineer appreciated one vital statistic: the fully-charged batteries contained the energy of a large chemical bomb, now ticking away on the outside of the Tower.

Ten minutes after their hasty arrival, the bomb went off. There was a muffled explosion, which caused only slight vibrations of the Tower, followed by the sound of ripping and tearing metal. Though the breaking-up noises were not very impressive, they chilled the hearts of the listeners; their only means of transport was being destroyed, leaving them stranded twenty-five thousand kilometres from safety.

There was another, more protracted explosion – then silence; the refugees guessed that the vehicle had fallen off the face of the Tower. Still numbed, they started to survey their resources; and, slowly, they began to realise that their miraculous escape might have been wholly in vain.

<p>44. A Cave in the Sky</p>

Deep inside the mountain, amid the display and communications equipment of the Earth Operations Centre, Morgan and his engineering staff stood around the tenth-scale hologram of the Tower's lowest section. It was perfect in every detail, even to the four thin ribbons of the guiding tapes extending along each face. They vanished into thin air just above the floor, and it was hard to appreciate that, even on this diminished scale, they should continue downwards for another sixty kilometers – completely through the crust of the earth.

"Give us the cutaway," said Morgan, "and lift the Basement up to eye level."

The Tower lost its apparent solidity and became a luminous ghost – a long, thin-walled square box, empty except for the superconducting cables of the power supply. The very lowest section – the "Basement" was indeed a good name for it, even if it was at a hundred times the elevation of this mountain – had been sealed off to form a single square chamber, fifteen metres on a side.

"Access?" queried Morgan.

Two sections of the image started to glow more brightly. Clearly defined on the north and south faces, between the slots of the guidance tracks, were the outer doors of the duplicate airlocks – as far apart as possible, according to the usual safety precautions for all space habitats.

"They went in through the south door, of course," explained the Duty Officer. "We don't know if it was damaged in the explosion."

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