As preparations for the new tests began, the inside of the trial base was busy again.

The bomb adaptation work that I had done on the No. 19 had to be done again on the No. 05 prototype parked in the nearby hangar.

In particular, the 1471G pulse Doppler radar on the J-8C is fundamentally a product of two eras with the single-pulse radar on the old model, not only the main beam is completely different, but the arrangement of the continuous wave illuminator is also very different, so it is necessary to debug the compatibility of the radar and CWI-F separately.

This is also a new challenge for the ground staff at the trial base.

Until three o'clock in the afternoon of the next day, with the coordination and cooperation of many units such as the 601 Institute and the 14th Institute, the No. 05 prototype of the J-8C finally completed all preparations before the target test overnight, and hung two test bombs to prepare for takeoff.

The test pilot is naturally still Feng Lin.

Since it is the first round of target tests, for the sake of safety, the scheduled launch distance this time is still 10-15km, and the targets are still two conventional HB170B subsonic unmanned target aircraft.

This model can carry a corner reflector, has enough RCS area, is easy to be intercepted by radar, and the flight altitude and flight speed are in the most comfortable killing zone for most anti-aircraft weapons, which is a basic subject in training and testing.

Although in Chang Haonan's view, it is really a bit overkill to let the combination of J-8C and Thunderbolt-11 fight this kind of thing, but everything must be done step by step, and you can't always go to hit supersonic physical target aircraft as soon as you come up.

Although several prototypes of the 83 Project have carried out many rounds of test flights, and even made a big splash at the Xiangzhou Air Show, the trial training base has only tested the No. 03 prototype that has not been overhauled, and what you see on TV is not as intuitive as the scene after all.

Therefore, today, Feng Lin's crisp and neat take-off action in the state of bombing still caused a burst of admiration in the tower command center.

Of course, for the people of the 601 Institute, especially Chang Haonan, this situation has been seen too much.

Everyone didn't even have any mood swings, just stared at the CRT monitor that displayed empty information.

"Unit 05 has entered the test airspace, and the radar is starting normally!"

Everything seems to be the same as the last time.

But experienced commanders are keenly aware of some subtle differences.

For example, the pilot reported that the radar had been activated about two minutes earlier than before, so that the target aircraft had just finished preparing for takeoff.

So, I had to wait a little longer to inform the pilot about the target:

"The target aircraft has taken off and is expected to enter the target area in two minutes!"

"Roger!"

Everything seems to be back on track.

A minute later, however, when the commander made a second radio briefing, the situation changed somewhat.

"The target machine is expected to ...... in one minute"

"Unit 05 reports, 35km, radar intercepts target!"

The commander, who was interrupted in the middle of speaking, held the intercom in his hand and was stunned for about a second.

He has been a tower commander at the trial base for almost 10 years, and he has never encountered such a situation.

The distance of 35km is not so surprising to him, after all, when the Su-27 hit the target before, he found that the location of the target was even farther away.

It's all about the angle.

In general, the search range of a fighter radar is a sector centered on the nose of the aircraft, and for a mechanical scanning radar, there will not be much difference in the search capabilities of different areas within the sector.

But target tracking, or target interception, is different.

This process requires that the center of the radar beam is always irradiated at the target, and the irradiation angle of the beam is changed with the movement of the target to obtain the angle information of the target relative to the radar antenna.

When the target is in the line of sight, which for most fighters is the axis of the fuselage, the error of angular tracking is 0.

The greater the deviation from the axis, the lower the tracking accuracy and the greater the difficulty of interception.

This time, when Feng Lin reported intercepting the target, the target aircraft was still about 40 degrees in the direction of the No. 05 prototype, and the altitude was also more than 1,000 meters lower.

It can even be counted as a downward target test.

When radar detects targets at medium and low altitudes that are lower than itself, it will be interfered with by ground clutter, and it will be more difficult to intercept targets.

Therefore, downward shooting is generally done as an advanced subject.

It's just a coincidence that the combination of J-8C + Thunderbolt 11 went to the sky for the first time, and it made it more difficult for itself.

To say that the Air Force in this era really does not have much knowledge, the trial base has only tested the J-8B/D and Su-27 two aircraft with over-the-horizon combat capabilities.

Needless to say, the performance of the former's 208A radar has already proven itself completely incapable of adapting to the real combat needs of the 90s by yesterday's 12km target capture.

The detection range of the latter's N001 radar is indeed far enough, but there are no other outstanding advantages......

Therefore, except for Chang Haonan, no one could have expected that the target capture process of this target test would be so smooth.

In fact, that's one of the many benefits of a new engine.

In addition to more power, a better engine can also drive a high-power generator to provide more energy for the on-board equipment.

Increasing power won't solve all problems, but to solve any problem, you must have enough power to ensure it.

This thing is the same as the power supply when assembling a computer host.

I can do without, but you can't do without.

If the power supply is large enough, the degree of DIY freedom is large enough to afford high-performance processors and graphics cards......

In short, the Huaxia aviation engineers in 1996 had not yet experienced the refreshing feeling brought by abundant power supply, and they were still picking and searching in the energy consumption design of the subsystem.

In addition, the sudden explosion of the turbojet 14 was not included in the 83 project plan.

As a result, the total power generation of 36kw on this complete version of the J-8C has not been useful.

Even so, it was enough to give everyone in the trial base a long view.

……

The shock left by the crowd did not end.

Before the tower commander could make any response, Feng Lin's voice came over the radio again:

"Missiles ready!"

From radar interception of the target, to the start of work of the continuous wave irradiator, to the preparation of the missile, the entire process took less than half the time before.

Obviously, everything is much better than the last test.

Guo Liqiang, the leader of the Second Electromechanical Bureau, stood behind the commander, not even daring to breathe, his hands clenched into fists were hidden in his sleeves, but both sleeves trembled slightly.

"Unit 05, the target has not yet entered the range of the missile envelope, waiting for the launch order!"

The commander who finally reacted issued the first such order in his life -

Although the Thunderbolt 11, or Asparad, has a range of almost 40 km on paper, this figure is a theoretical figure that can be produced at an altitude of 10,000 meters, when the carrier aircraft and target are flying relative to each other at 1.2 times the speed of sound.

Now the altitude of the No. 05 aircraft and the target aircraft are below 5000, and the speed is also maintained at subsonic speed, and 35km is obviously beyond the reach of this missile.

In fact, as a model where most of the R&D work was done in the late '70s, Asped has really lagged behind in these hard metrics.

It's just that the performance of the radar on the Huaxia side was too poor before, so it didn't care about paying attention to the effective range of the missile itself.

About half a minute later, Feng Lin finally got permission to shoot.

A missile ignited from under the wing of the No. 05 aircraft, then quickly flew off the pylon, guided by the signal provided by the continuous wave irradiator, and flew towards a distant target.

The target test area is not too far from the airport, so ground-based radar can track the entire process.

Under the gaze of hundreds of pairs of eyes in the tower, the signal representing the missile and the signal representing the target aircraft got closer and closer, and finally coincided and dispersed into several random scattered targets.

Hit.

(End of chapter)