Chapter 419

Tons and tons of ~~!

A bottle of liver-exploding potion was lowered, and Gu Lu's six attribute values were all increased.

Gu Lu has long been accustomed to this state of exploding attribute values.

Moving his fingers, Gu Lu's ten fingers were placed on the keyboard, and he flew up quickly, almost with an afterimage.

All the data had already been sent to the computer in front of Gu Lu in advance.

What Gu Lu needs to do now is to summarize the data of the detector, and then design a new set of operation instructions and input them into the navigation and control system of the detector.

It's quite a chore.

In terms of time, Gu Lu is sufficient.

Because two hours is not enough, Gu Lu can also exchange the time parking space again, plus two hours of clock.

Merely......

The price of 100 points once in the time parking space is really painful to watch.

Discarding the superfluous thoughts in his mind, Gu Lu began to design new instructions without distraction.

The presence of a signal delay.

By the time the new commands are fed into the detector's GNC system, the detector is already at the end of the final deceleration phase.

The operation of the final deceleration phase is mainly done by engine 1.

Follow the original instructions.

After the final deceleration phase is completed, Engine 1 automatically disengages the detector to reduce the load on the detector itself.

But now......

This off-engine operation is not feasible.

Because relying on the remaining engines 3 and 4 alone will not be enough to complete the remaining five stages of the lunar landing process.

At this time, it is necessary to make use of the No. 1 engine, which still has some fuel left.

Gu Lu quickly conceived a plan in his mind.

That is, in the rapid adjustment stage, the alternate propulsion of engine No. 1 and engine No. 4 is used to replace the damaged engine No. 2.

However, in this case, we have to face another problem.

That's the landing site!

Engine No. 4 is mainly responsible for the supply of thrust reverser in the hovering section.

But now part of the fuel consumption is on the quick adjustment of the settlement.

Then, the amount of time the remaining fuel supports the probe in the hovering segment will be reduced considerably.

Hover time is reduced.

During this time, it is naturally impossible to run to the sky above the predetermined landing point.

Through simple calculations, Gu Lu came to the conclusion that the fuel on the probe was not enough to support the probe to reach the predetermined landing point - the von Kármán impact crater!

So......

The only way is to change the drop point!

Gu Lu called up the topographic map of the far side of the moon on the computer.

This was captured with a high-speed capture camera as the Chang'e-4 probe orbited around the moon.

The level of clarity is high.

Gu Lu marked the original landing point, the location of the von Kármán impact crater, on the map.

Then, the range of the detector can choose the landing point.

It was a circle with a diameter of ten kilometers.

However, most of the area within the circle is mountains and hills, or basalt lava that cannot be stopped.

Gu Lu's brows furrowed.

If all the terrain within 10 kilometers in diameter is this kind of terrain, then the probe will not be able to descend at all!

Gu Lu does not believe in evil.

I began to magnify this topographic map tenfold, inch by inch.

Gu Lu's eyes are comparable to a scanner.

After five minutes, Gu Lu finally found a place where the probe could land smoothly.

It was a crater.

Craters are a common feature on the surface of the moon.

The main reason for its formation is because of the impact of meteorites.

The crater that Gu Lu found was estimated to be that the meteorite did not fall fast at that time, so the area was very small.

Therefore, the crater in the middle of the crater occupies a similarly small area.

When you do it, it's only about 100 meters in diameter.

After getting this data, Gu Lu's face hurt.

This range is too small!

Due to the inclination around the crater, it is necessary to keep the probe within 60 meters in diameter from the center of the crater in order to land smoothly.

And the diameter of the detector is about fifteen meters.

This fault tolerance rate is too small.

To know......

At the originally scheduled landing site, the von Kármán impact crater, the margin for error of the probe's landing was a full one kilometer in diameter.

But all of a sudden, it became sixty meters.

Just thinking about it makes people feel terrible!

However, it is uncomfortable to be uncomfortable, and this impact crater must also be chosen for the landing site.

Because after searching around, Gu Lu found that within the ten kilometers that the probe could land, only this impact crater met the landing conditions.

It's a choice!

In addition to smiling helplessly, Gu Lu could only do his best to make the detector accurately land within the fault tolerance range allowed by designing the operating parameters.

At the very least, you need to get each parameter to 10 decimal places, or even 20 or 30 decimal places!

This is a rescue that is destined to be difficult!

But no matter what, Gu Lu still chose to go all out!

…………

time parked space.

Gu Lu's eyes were bloodshot, and his ten fingers crackled on the keyboard.

Next to it, there is a whole stack of printed A4 paper.

It's a dense collection of data.

Gu Lu still underestimated the difficulty of designing a new set of operating instructions.

Now it's the second time stop space that Gu Lu has used.

Gu Lu had been in this space for more than three hours.

More than three hours of high-intensity computing.

In these three hours, Gu Lu's brain did not stop calculating for a second.

If it weren't for the blessing of the liver explosion potion and the fatigue potion, Gu Lu would probably pass out directly due to excessive fatigue now.

"It's coming, it's going to be fast!"

Gu Lu has now completed the setting of the operation instructions of the first four stages, and only the command of the last slow descent section is left.

But this does not mean that Gu Lu is about to succeed.

If the landing site is still in the von Kármán crater, then the command setting for this last stage is quite simple.

But the landing point has changed.

Replaced with an impact crater with a diameter of only a hundred meters.

This requires Gu Lu to be extremely rigorous.

Even the slightest deviation in data is not allowed on Gu Lu's side.

Gu Lu must guarantee one thing.

That is, in the command of its own design, the probe will definitely land at the origin of the impact crater.

In this way, the fault tolerance rate will be increased.

If the position deviation occurs within 45 meters, the detector is still safe.

But this number is still too small.

As small as the detector shakes a little because of instability, it will deviate.

Once the probe descends on the crater surrounding the crater, the only outcome is ......

Bang~!boom~!

The detector will still turn into a ball of fire.

Then, because of the extremely cold temperature on the far side of the moon, it burns for a period of time and becomes a pile of empty shells.

Gu Lu didn't want such a picture to happen.

Even more unwilling to play with their own lives, their efforts are ultimately in vain.

So Gu Lu's eyes were glued to the computer screen, and he calculated seriously little by little.

The more this happens, the more anxious it becomes!