Voyage (5 page)

York had put this stuff aside. Even at the age of sixteen, York was hot on science, on the strictness and logic of it; she found herself getting unreasonably impatient at illogic, and wishful thinking, and the emotional coloration of rational processes of all sorts.

(Actually she was much too severe for most of the boys her mother tried to match her with. You’d think that someone who’d
suffered as messy a divorce as Maisie York would learn not to meddle in other people’s relationships …)

The fact was, to her, the
real
Mars was a hell of a lot more interesting than Lowell’s anthropocentric dreams.

Because of Mariner, Mars had turned into a place you could do some geology.

How would the geology of Mars differ from Earth’s? What would that tell you about Earth, that you couldn’t have learned from staying at home? A hell of a lot, probably.

Mariner’s thirteenth frame had electrified her.

The thirteenth picture showed craters with frost inside them.

My God. Not the Moon, not Arizona. Mars is something else. Something unique
.

Ben eyed York, interested, speculative. ‘So you’re a closet Mars nut. I ought to take you out to JPL sometime. That’s where they run the planetary probes from … Hey, Natalie. Maybe you ought to apply.’

‘What for?’

‘The astronaut corps.’

‘Me? Are you joking?’

‘Why not? You’re qualified. And we need people like you. Even Spiro says so; he thinks people were turned off by Apollo because it was too engineering-oriented.’

‘Well, so it was.’

Priest eyed her. ‘I’m serious, actually, Natalie. It’s a genuine opportunity for you. You could go work for Jorge Romero’s geology boys in Flagstaff, and train the moonwalkers. That’s how Jack Schmitt got into the program, and they say he’ll make it to the Moon.’

‘You worry me, Ben. How can a crazy man like you be allowed to drive a car at night?’

‘Here.’ Driving with one hand, he reached up, turned back his lapel, and unclipped a silver pin, in the shape of a shooting star trailing a comet’s tail.

‘What is it?’

‘My rookie’s pin. Some day soon I’m going to get a flight. So you need this more than I do. Take it. And when you’re the first human on Mars, when the
Spiro Agnew
lands in 1982, drop it into the deepest damn crater you see, and think of me.’

‘You’re crazy,’ she said again. ‘You should give it to Petey.’

They fell silent.

Her thoughts turned back to Jackass Flats.

They don’t even contain the vented hydrogen. And Mike never thought to tell me about any of this. Why? Because he thought I couldn’t stand to hear it? Or because he can’t even see what’s wrong, here?

What does that say about us? And – do we really have to do this shit, to get to Mars?

She closed her fingers around the little pin Ben had given her.

Ahead of them, the Interstate was a band shining in the starlight and stretching toward the glow of Vegas.

Major Philip Stone joined the USAF in 1953, at the age of twenty.

He arrived in Korea in time to make a series of hazardous sorties. Well, Korea had been a turkey shoot. But Stone hadn’t enjoyed combat. His buddies called him too serious – a straight arrow. But for Stone, the important thing was what he could learn in each flight, either about his machines, or about himself.

After the war, his disciplined curiosity found a new focus.

In the early 1960s the most promising route to space, if you were inside the USAF, had looked like the experimental high-altitude rocket aircraft program. The X-15s could even give their pilots astronaut wings, by flying through the officially recognized lower limit of ‘space,’ at fifty miles high. The X-15s were to lead on to the advanced X-20 – the Dyna-Soar – in which a guy would have been boosted into orbit, and then he would have
flown
back down, landing like an airplane.

But with men routinely being hurled into space in ballistic capsules like Mercury and Gemini, the X-20 looked too advanced for its time, and it soon ran up a bill as large as that for the entire Mercury program without delivering a single flight article. And it was canned.

Now, the only way for a pilot to reach space was to transfer to NASA. Neil Armstrong was another X-15 pilot who had gone that way before. And so that was what Stone had determined to do.

But first he had some unfinished business.

In 1969, Stone was thirty-seven years old.

‘Drop minus one minute.’

‘One minute,’ Stone said. ‘Rog. Data on. Emergency battery on.
I’m ready when you are, buddy. Master arm is on, system arm light is on …’

The B-52 reached its launch station over Delamar Dry Lake in Nevada. The rocket plane was suspended from the bomber’s wing pylon like a slim, black, stub-winged missile, crammed full of liquid oxygen and anhydrous ammonia, ready for its mid-air launch.

Stone was sealed up inside the X-15. The B-52’s engine was just feet away from his head, but Stone, cocooned inside the pressurized cockpit, could barely hear its noise. From the corner of his eye he could see the chase planes clustered close to the B-52.
At last, this damn flight is going to be over and done with
.

After fifteen years, the X-15 program was winding up. There was only one serviceable X-15 left: this one, X-15–1, the first to fly back in 1960, a veteran of seventy-nine previous missions. The Edwards people wanted to finish up the program with one last flight, the two hundredth overall; and they had asked Phil Stone to stay around long enough for that. But then there was a series of delays and technical hitches, and the winter weather had closed in; until by now the flight was all but a
year
later than it had originally been planned for.

For Stone that was a year wasted out of his life. But he’d spent the time preparing for his move to NASA, trying to be sure he started off his new career as well placed as he could be.

‘Fifteen second mark to separation. Chase planes on target. Ten seconds.’

He felt his heart, somewhere under the silver surface of his pressure suit, pumping a little harder. As it was supposed to at such moments.

‘Three. Two. One. Sep.’

With a solid crack the B-52’s shackle released the X-15, and the plane dropped away from its mother, and Stone was jolted up out of his seat.

Stone emerged from the shadow of the bomber’s wing, at forty-five thousand feet, into a shock of brilliant sunshine. He was already so high that the morning light was electric blue, more like dusk. The chase planes were little points of silver light around him, with their contrails looping through the air.

The land curved below the plane’s nose, as if the Mojave was some huge, smooth dome. He could see the worn hump of Soledad, the Lonely Mountain, brooding over Rogers Dry Lake, half a mile above sea level. Everywhere the dried-up salt lakes glistened like
glass, speckled with gray-green sagebrush and the twisted forms of Joshua trees. It was a flat, desolate, forbidding place. But every summer the desert sun baked the damp lake beds to a flat and smooth surface. The whole place was like one huge runway, and you could land anywhere in reasonable safety.

It was a little after ten thirty in the morning.

Stone pushed the button to ignite the X-15’s rocket engine.

He was kicked in the back, hard. The plane’s nose was tipped up into the sky as ammonia and oxygen burned behind him, and he rode higher into the deepening blue. He could hear his own breathing inside his helmet; otherwise, there was barely a sound – he was outpacing the noise and exhaust plumes behind him.

Far ahead he saw a speck of light, like a low star. It was a high chase plane. It grew out of nowhere in a flash, and plummeted backwards past Stone, as if it was standing still.

At forty thousand feet he reached point nine Mach, and he could feel a bumping, like a light airplane flying in turbulence. He was moving so quickly now that the air molecules couldn’t get out of the way of his craft in time.

The turbulence smoothed out as he went supersonic.

Eighty thousand feet.

He moved the rocket’s throttle to maximum thrust, and he was pushed back into his seat by four and a half G. X-15–1 climbed almost vertically. The sky turned from pearl blue to a rich navy. He was already so high he could see stars ahead of him, in the middle of the day; so high there were only a few wisps of atmosphere, barely sufficient for his plane’s aerodynamic control surfaces to grip.

The sensations of power, of speed, of control, were exhilarating.

Ninety thousand feet; thirty two hundred feet per second. The Mojave spread out beneath him, over two thousand feet above sea level, was like the dried-out roof of the world.

Less than a minute into the flight, the problems started.

He got a message from the ground. It sounded like they were losing telemetry from the bird. The trouble was, the voice link had suddenly got so bad that he couldn’t tell for sure
what
they were saying.

A warning light showed up on his panel. Another glitch. For some reason his automatic reaction control rockets had deactivated. It wasn’t too serious for now; he was still deep enough in the atmosphere that he was able to maintain control with the aerodynamics.

The X-15 flew like an airplane in the lower atmosphere. It had conventional aerodynamic surfaces – a rudder and tail planes – which Stone could work electronically, or with his pitch control stick and rudder pedals. But above the atmosphere X-15 was a spacecraft. The automatic RCS (reaction control system) – little rocket nozzles, like a spaceship’s – was controlled by an electronic system called the MH96. And there was a separate manual RCS system Stone could control with a left-hand stick.

Quickly he was able to trace through the fault The automatic RCS had shut itself off because the gains of his MH96, his control system, had fallen to less than fifty per cent. The gains were supposed to drop when the plane was in dense air; then the MH96 was designed to shut itself off, to conserve hydrogen peroxide rocket fuel. But this time the gains had dropped because the hydraulics which controlled his aerodynamic surfaces were stuttering. So the automatic control system couldn’t rely on the data it was getting, and it had shut down the automatic RCS.

It looked as if the electrical disturbance that had started with the radio was spreading.
Looks as if we might be snake-bit, old buddy
.

Well, he was close to the exhaustion of his rocket fuel anyhow. He pressed a switch, and the engine shut down with a bang.

He was thrust forward against his straps, and then floated back.

He had gone ballistic, like a hurled stone; now X-15–1 would coast to the roof of its trajectory, unpowered. He lost all sensation of speed, of motion. He was weightless inside the cabin, and he felt as if his gut was climbing up out of his neck.

He tried to put the problems aside. He was still flying, still in shape. And, no matter what was happening to the MH96, he had a program to work through, a whole series of experiments for NASA and the USAF.

One minute forty-one.

He activated the solar spectrum measurement gadget, and the micrometeorite collector in his left wing pod.

Suddenly, the MH96 control system’s gains shot up to ninety per cent, for no apparent reason, and the automatic RCS cut back in.

He checked his instruments. Like most experimental aircraft, the X-15’s cockpit had a primitive, handmade feel, with rivets and wires showing. Well, it seemed he had full control ability for the first time since entering his ballistic flight path. He welcomed the return, but he was unnerved, all over again. What next?

He had very little confidence left in this battered old bird.
Maybe
she knows it’s her last flight; maybe she’d prefer a blaze of glory to a few decades rusting in some museum
.

He would soon be going over the top, the peak of his trajectory, at two hundred sixty thousand feet.

It was time to begin the precision attitude tracking work required for the solar spectrum measurement. He needed a nose down pitch, and a yaw to the left. He was already flying at almost a zero degree angle of attack, but was yawing a little to the right, and rolling off to the right as well. So he fired his wing-mounted roll control thruster for two seconds to bring his wings level, and his yaw control thruster to bring the X-15’s nose around to the left. The X-15 was like a gimbaled platform, hanging in the air, twisting this way and that in response to his commands. To stop the left roll he fired another rocket –

He was still rolling, too far to the left.
Christ. What now?

The MH96 had failed again, and had cut out the automatic RCS, just as he was completing his maneuver.

He continued to rotate. To compensate he held his right roll control for eight more seconds. But the air was so thin up here that his aerodynamic controls were degraded, and the response was sluggish. He fired his manual RCS yaw rockets.

He could feel sweat pooling under his eyes; one problem after another was hitting him,
blam blam blam
.

Suddenly the MH96 cut back in with its automatic RCS. That stopped his yaw, short of the correct heading. Stone fired his manual yaw again; this time as he approached the reference heading the yaw was countered by the automatics, apparently correctly – but now the damn thing cut
out
again, and he yawed past the reference.

And now, on top of that, his roll attitude indicator ball was rotating. He had started rolling to the left again. He tried to wrestle that back with three short pulses on the manual roll RCS, but he overshot, and started a roll to the right …

Fifty miles high
. The sky outside his tiny cabin was a deep blue-black, and the control lights gleamed brightly, like something off a Christmas tree. At the horizon’s rim he saw the thick layer of air out of which he’d climbed. He could see the western seaboard of the USA, all the way from San Francisco to Mexico; the air was clear, and it was all laid out under him like a relief map.