A few days later, the Thunder Mountain.

Ye Han tilted his head and stared at the home screen, looking loveless.

It's not that his mental endurance is too poor, but the situation he is facing at the moment is really complicated, and the thought of the alien fleet makes his temples jump abruptly.

Since receiving the order from Beiyuezhou, Ye Han began to observe this alien fleet, and all his thoughts were on how to complete the task, but this task was too arduous, one against eighteen, and the strength of the enemy and us was not at all a grade.

In order to complete the task, Ye Han racked his brains, thinking about how to stop the enemy army all day long.

Sneak attack?

No way!

Space is unobstructed, the Leishan can't hide its tracks at all, and now the enemy and us still have several days to sail, and the Leishan has been stared at by aliens, and there is no chance to get close at all, so there is naturally no way to talk about the sneak attack

Guerrilla?

Not at all!

Guerrilla guerrilla warfare, both guerrilla and attack, if you can't get close to the enemy's side, you will become only guerrilla and not attack, or you will be stuck by the same problem.

Making use of asteroids?

This is okay, although it has been used more often, but the easy way is a good way.

Ye Han thought well, but the aliens fell into the pit many times, and no matter how long they remembered, they knew how to learn a lesson, the Thunder Mountain was still far away from the alien fleet, and the aliens would prepare in advance, but whenever they encountered an asteroid, they would rather go around the asteroid than give the Thunder Mountain a chance.

Ye Han called an egg hurt, dog. Day. Can the aliens fight a good war?

Scolding and scolding, unhappy and unhappy, the task still has to be completed, but judging from the actions of the other party, it is absolutely impossible to get close to the fleet.

Desperately?

This is a good idea, at least it can fight out a few enemy transport ships, but the aliens have eighteen warships, and their own lives are expensive, so it is impossible for Ye Han to send the Leishan to the fire pit.

Even if you can't get close and attack at the same time, then only the range of naval guns and missiles is sufficient, and the former has enough range but too poor accuracy, and only missiles have a slight chance.

But it was only a hint, the patrol range of the enemy ships was very large, and they deliberately added a distance in the direction of the Thunder Mountain, and even the long-range missiles with the longest range could not reach the enemy's transport ships...... That's right, it's a transport ship, and this battle is not fought to destroy the enemy's warships, but to destroy the enemy's supplies, and the transport ships are naturally the primary target.

Of course, it would be perfect to be able to take out the enemy ship with ease.

With an idea in his head, Ye Han immediately set about implementing it, the first problem he wanted to solve was that the range of the missiles was not enough, and he had to find a way to transform the existing long-range missiles so that they could play a role at an ultra-long distance.

There are many factors that limit the range of missiles, the most important are three, one is the detection and locking ability of the missile itself, which determines the activation distance of the missile when it flies near the target, as well as the final hit rate; The second is the issue of fuel, which determines the range and speed of the missile; Finally, the direction of the missile when it is launched, it is slightly worse when it is launched, and it is tens of hundreds of kilometers away after it flies away.

The conditions on board the ship are limited, and the equipment on the missiles is relatively sophisticated, and the transformation cannot involve sophisticated electronic equipment, so there is absolutely no room for improvement in the first direction, and it cannot be moved if you want to.

The issue of fuel is somewhat complicated, generally speaking, missiles can be divided into solid fuel and liquid fuel in the form of fuel, both of which have their own advantages and disadvantages, but at the military level, solid fuel is better than liquid fuel is recognized by all countries.

However, nothing can be generalized, the disadvantage of solid fuel is that it has to be burned out in one breath when ignited, and the combat distance of space warships is often beyond imagination, missiles must be advanced in sections, and solid fuel can only be designed into a multi-stage structure, and the cost of equipment and maintenance will inevitably rise sharply.

Liquid fuel is different, it can adjust the amount of fuel entering the fuel room according to the actual situation, and can even shut down and restart the engine at any time, for space battles that can easily hundreds of thousands of kilometers, the segmented propulsion of missiles has extremely important practical significance.

Both of these missiles are indispensable and important equipment on space warships, but the military has optimized their selection according to their respective characteristics.

Solid-fuel missiles are mainly short-range anti-aircraft missiles that do not require high range, and their common feature is that they have a short range and do not need to be advanced in sections.

However, the requirements for range are relatively high, and those that need to maneuver in sections are liquid fuel, and the vast majority of medium and long-range missiles used by the space fleet are liquid fuel.

It's not that solid fuel can't be promoted in stages, but the technology is too troublesome, and the production cost is a big problem that can't be solved.

Of course, there are no absolutes, and there are also models of long-range missiles that use solid fuel, but the number of equipment is not much.

For example, the structure of this missile is different, the first stage is only to send the missile to the vicinity of the target, and there is no need for segmented maneuvering, so except for the most primitive model using liquid fuel, the subsequent improved models are all replaced with solid fuel.

By the way, the Fish missile has always been a solid fuel.

If the Thunder Mountain wants to take out the enemy's transport ship, the only option is long-range missiles, but the long-range missiles on the ship are all liquid fuel.

Long-range missiles are designed this way, and the use of liquid fuel does not seem to be a problem, but is this really the case?

As we all know, the temperature in space is very extreme, lower than the solidification temperature of liquid fuel, and when the missile is not launched, the temperature inside the ship can prevent the fuel from freezing; After the missile was launched, it hit the target without waiting for the fuel to freeze.

But this time is different, the distance between the two sides is too far, the missile is expected to fly for about ten days, such a long time, before the missile hits, the fuel tank will freeze first, even if it flies to the place, it will not ignite the fire, it is not as good as a shell.

Therefore, the first step in transforming the missile is to install a set of heating devices in the fuel tank of the missile to ensure that the fuel does not condensate.

Don't think that it is very simple to install a set of heated armor, missiles are very sophisticated and cutting-edge weapons, not something that can be changed casually, for this matter, Ye Han specially contacted Beiyuezhou, first asked Beiyuezhou to provide technical support, and then called the best maintenance personnel on the ship, and fought for two days and two nights in a row before finally completing the transformation of a missile...... That's right, it's one!

One is better than nothing, Ye Han was cautious and cautious, cautious and cautious, and tested it several times, until this missile passed all the tests, and finally breathed a sigh of relief.

Then the nuclear warhead was filled with fuel, and a series of procedures went down, and the missile finally went through all the procedures and was ready for launch.