Debt of Honor - Tom Clancy [395]
"Still okay, Sandy." The threat screen was still more black than anything else as they turned east toward Honshu.
"Rog." Behind them at ten-mile intervals, two more Comanches were heading in.
Though small and a mere helicopter, the RAH-66A was in some ways the most sophislticated aircraft in the world. It carried in its composite airframe the two most powerful computers ever taken aloft, and one of them was merely a backup in case the first should break. Their principal task for the moment was to plot the radar coverage that they had to penetrate to compute the relative radar cross-section of their airframe against the known or estimated capabilities of the electronic eyes now sweeping the area. The closer they got to the Japanese mainland, the larger grew the yellow areas of maybe-detect and the red areas of definite-detect.
"Phase Two," the man from Air Combat Command said quietly aboard the AWACS.
The F-22 fighters all carried jamming gear, the better to accentuate their stealth capabilities, and on command these were switched on.
"Not smart," the Japanese controller thought. Good. They must know that we can track them. His screen was suddenly littered with spots and spokes and flashes as the electronic noise generated by the American fighters muddled his picture. He had two ways of dealing with that. First he increased his power further; that would burn through much of what the Americans were attempting. Next he told the radar to start flipping through frequencies at random. The first measure was more effective than the second, he saw, since the American jammers were also frequency-agile. It was an imperfect measure, but still a troublesome one. The computer software that was doing the actual tracking was based on assumptions. It started with known or estimate positions of the American aircraft, and, knowing their speed range, sought returns that matched their base courses and speeds, just as had happened with the bombers that had once probed his defense line. The problem was that at this power output, he was again detecting birds and air currents, and picking the actual contacts out was becoming increasingly difficult until he punched yet another button that tracked the jamming emissions that were more powerful than the actual returning signals. With that additional check, he reestablished a firm track on both pairs of targets. It had required only ten seconds, and that was fast enough. Just to show the Americans he hadn't been fooled, he maxed-out his power, flipped briefly to fire-control mode, and zapped all four of the American fighters hard enough that if their electronic systems were not properly shielded, the incoming radar signals would burn some of them out. That would be an interesting kill, he thought, and he remembered how a pair of German Tornado fighters had once been destroyed by flying too close to an FM radio tower. To his disappointment, the Americans simply turned away.
"Somebody just set off some mongo jammers to the northeast."
"Good, right on time," Richter replied. A quick look at the threat screen showed that he was within minutes of entering a yellow area. He felt the need to rub his face, but both his hands were busy now. A check of the fuel gauges showed that his pylon-mounted tanks were about empty. "Punching off the wings."
"Roger—that'll help."
Richter flipped the safety cover off the jettison switch. It was a late addition to the Comanche design, but it had finally occurred to someone that if the chopper was supposed to be stealthy, then it might be a good idea to be able to eliminate the unstealthy features