Black wind
parameters.”
The Zenit-3SL, like most modern rockets, was steered in flight by adjusting, or gimbaling, the launch vehicle’s engine, redirecting its thrust to govern the rocket’s heading. As Ling was aware, the initial launch sequence called for no gimbaling until the rocket was in a stabilized climb, then the navigation system would initiate slight steering adjustments to guide the rocket toward the target. Only an undetected imbalance would create an immediate steering correction from launch.
Ling walked over to the engineer’s station and peered at the man’s computer monitor. His mouth fell open as he saw that the rocket’s engine was gimbaled to its maximum degree. He watched in silence as, a second later, the engine adjusted back to its neutral position, then gimbaled to the full extent in the opposite direction. Almost immediately, the whole cycle started over again. Ling immediately surmised the cause.
“Choi, what was the launchpad horizontal deviation at T-0?” he shouted to the platform engineer.
The engineer looked back sheepishly at Ling and uttered in a barely audible voice, “Sixteen degrees.”
“No!” Ling gasped in a raspy voice as his eyes scrunched closed in a panic of disbelief. The color rushed from Ling’s face and he felt himself grasping the computer monitor to steady his suddenly weakening knees. With dire foresight, he slowly opened his eyes and stared at the video screen of the charging rocket, waiting for the inevitable.
Pitt had no way of knowing the impact from his frenetic hole drilling. But the dozens of gouges poked into the side of the support columns had opened up a flood of incoming seawater that quickly overpowered the Odyssey’s ballast pumps. With the automated controls set to maintain the prescribed launch depth, the incoming water collected in the rear support columns and tugged the platform down by its aft side. Firing off the platform, the Zenit rocket was over fifteen degrees off vertical center as it left the launchpad and immediately tried to correct the deviation from its prescribed flight plan by shifting the engine thrust. But at the low speed of takeoff, the initial command was diluted so the engine position was tweaked again to its maximum adjustment. As the launch vehicle gained speed, the adjustment quickly became an over correction and the rocket’s computers gimbaled the engine in the opposite direction to counterbalance the movement. Under normal conditions, the rocket might have been able to stabilize itself with a few minor adjustments. But on this flight, the Zenit’s fuel tanks were only half full. The partially empty fuel tanks allowed the liquid propellant to slosh back and forth during the thrust inclinations, creating a whole new set of balancing dynamics. The overtaxed stabilization control system tried vainly to smooth the flight but, ultimately, exacerbated the situation and the rocket began to waffle.
On video screens and satellite feeds, out an airship cockpit window, and from a barren rocky island in the Pacific Ocean, a thousand eyes stared transfixed at the streaming white rocket as it began a slow and morbid gyration across the sky. What started as a slight wobble at liftoff grew into a continuous waggle during ascent until the entire rocket was shaking uncontrollably toward the clouds like an anorexic belly dancer. Had Sea Launch been managing the flight, an automated safety control would have detonated the rocket as it veered out of parameter. But the abort command had been deleted from the flight software by Kang’s crew and the Zenit was left to struggle upward in a tortuous dance of death.
To the unbelieving sight of those who watched, the huge rocket swung wildly in the sky before tearing itself apart from the inside out and literally snapping in two. The lower Stage immediately disintegrated in a massive fireball as the fuel tanks were simultaneously ignited, swallowing everything in its radius with a cauldron of flame. Chunks and pieces of rocket machinery not dissolved by the explosion rained down over a swath of empty sea, while the high-altitude
mushroom cloud from the explosion hung in the blue sky as if painted there.
The nose cone and upper stage of the Zenit oddly sailed free of the carnage and continued speeding across the sky like a streaking bullet, fueled only by momentum. In a graceful parabolic arc, the smoke-trailed payload gradually lost energy and nosed down toward the Pacific, smacking the
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