energy from some hidden source, deep in the southern cap of Rama. But why now? And, even more important, what next?
He was well past the tip of Big Horn, and hoped that he would soon be beyond the range of any lightning discharges. But now he had another problem: the air was becoming turbulent, and he had difficulty controlling Dragonfly. A wind seemed to have sprung up from nowhere, and if conditions became much worse, the sky-bike’s fragile skeleton would be endangered. He pedaled grimly on, trying to smooth out the buffeting by variations in power and movements of his body. Because Dragonfly was almost an extension of himself, he was partly successful; but he did not like the faint creaks of protest that came from the main spar, or the way in which the wings twisted with every gust.
And there was something else that worried him: a faint rushing sound, steadily growing in strength, that seemed to come from the direction of Big Horn. It sounded like gas escaping from a valve under great pressure, and he wondered if it had anything to do with the turbulence he was battling. Whatever its cause, it gave him yet further grounds for disquiet.
From time to time he reported these phenomena, rather briefly and breathlessly, to Hub Control. No one there could give him any advice or even suggest what might be happening; but it was reassuring to hear the voices of his friends, even though he was now beginning to fear that he would never see them again.
The turbulence was still increasing. It felt almost as if he was entering a jet stream—which he had once done, in search of a record, while flying a high-altitude glider on Earth. But what could possibly create a jet stream inside Rama?
He had asked himself the right question. As soon as he had formulated it, he knew the answer.
The sound he had heard was the electric wind carrying away the tremendous ionization that must be building up around Big Horn. Charged air was spraying out along the axis of Rama, and more air was flowing into the low-pressure region behind. He looked back at that gigantic and now doubly threatening needle, trying to visualize the boundaries of the gale that was blowing from it. Perhaps the best tactic would be to fly by ear, getting as far as possible away from the ominous hissing.
Rama spared him the necessity of choice. A sheet of flame burst out behind him, filling the sky. He had time to see it split into six ribbons of fire, stretching from the tip of Big Horn to each of the Little Horns. Then the concussion reached him.
CHAPTER 28
ICARUS
Jimmy had barely time to radio “The wing’s buckling—I’m going to crash” when Dragonfly started to fold up gracefully around him. The left wing snapped cleanly in the middle, and the outer section drifted away like a gently falling leaf. The right wing put up a more complicated performance. It twisted around at the root, and angled back so sharply that its tip became entangled in the tail. Jimmy felt that he was sitting in a broken kite, slowly falling down the sky.
Yet he was not quite helpless; the airscrew still worked, and while he had power there was still some measure of control. He had perhaps five minutes in which to use it.
Was there any hope of reaching the sea? No—it was much too far away. Then he remembered that he was thinking in terrestrial terms; though he was a good swimmer, it would be hours before he could possibly be rescued, and in that time the poisonous waters would undoubtedly have killed him. His only hope was to come down on land. The problem of the sheer southern cliff, he would think about later—if there was any “later.”
He was falling very slowly, here in this tenth-of-a-gravity zone, but would soon start to accelerate as he got farther away from the axis. However, air drag would complicate the situation, and would prevent him from building up too swift a rate of descent. Dragonfly, even without power, would act as a crude parachute. The few kilograms of thrust he could still provide might make all the difference between life and death; that was his only hope.
Hub had stopped talking; his friends could see exactly what was happening to him and knew that there was no way their words could help. Jimmy was now doing the most skillful flying of his life. It was