Roland didn't know what his friends said about him, and he didn't know that it was his childhood friend who was playing against him. At this moment, he is devoting himself to the "technical problems" pointed out by his friends.

Strap-on rockets are placed in any vehicle that does not have computer, aerodynamics, basic theory of aircraft engineering, overall structure design of the aircraft, strength analysis, testing capabilities...... In the world where aerospace professional disciplines are based, they are all careless about human life, and they are more dangerous things than suicide rockets - suicide rockets can still bring a little damage to the enemy, and the results of the foolish bundled rockets are all their own people......

In peacetime, if anyone came up with the idea of "tying missiles to floating ships, let's go to the sky together", Roland has long since passed with a big ear. Even in wartime, the guy who came up with this plan would be invited by the gendarmerie for alternative coffee on suspicion of being a major espionage. Now what makes people laugh and cry is that this plan was actually proposed and implemented by Roland himself.

Just because it's the only chance.

How do you break through the layers of protection and take down the heads of enemy generals and even kings? Do you send a large army to fight your way out? Do you send out a mobile fortress that is praised as never falling? Can an army of 200,000 do it? Can you do it with 500,000? Can you do it with 1 million?

In conclusion, it is impossible.

In the face of a strike with strategic-class weapons, numbers are meaningless. In the process of assembling troops, on the way forward, in the process of storing and transporting supplies for production, that super cannon will be fired, and any group target that gathers together will become a victim of various strategic attack techniques. As long as people can't gather their forces faster than the firing interval of that super cannon, it's all pointless.

As soon as the opponent presses the launch button, the battle is over.

There is only one chance, and in just a few minutes of sacrifice in tens of thousands, how to cross all the enemy's defenses and take the Iserlohn Fort in the time it takes to burn a cigarette?

There are only rockets or missiles left.

However, even if a rocket or missile that exceeds the speed of sound can hit the target correctly or break through the airspace of the battery, it is also a question of concern.

As a result, discussions went on and on, and the final compromise was to install the six captured A-4 rockets on the Enhanced Float Endeavour. By reducing the load, the output power of the parallel rocket engines can meet the needs of the high parabolic trajectory (it is mentioned here that the high parabolic trajectory has strict requirements for the thrust of the missile. Take the "Hwasong-15" as an example, its range is only 960 km, but the launch height reaches 4,500 km, and according to the principle of high ballistic flight, its standard range can reach 12,000 km. The higher the shooting height, the closer the firing range, and if you want to increase the firing range with the same shooting height, you can only increase the engine thrust). According to theoretical calculations, the parallel connection of six A-4 rockets fueled by metallic hydrogen could indeed send the Endeavour to the top of the Iserlohn battery using the floatation method of "weight reduction". But the premise is that the six rockets with the dismantled warheads can be actually pushed in parallel without a single mistake during the whole launch.

As long as there is a slight error, or the ignition time is wrong, or the output force is inconsistent, or there is a surge in the air, or a screw is loose, or the fuel line is faulty, everyone just waits to turn into fireworks.

It is said that this kind of technical problem can only be broken through by organizing a large-scale professional team for more than ten years, but in the whole plan, this is the easiest to solve. The reason is that in the process of analyzing the maintenance and maintenance data of the MDS "Unicorn", it was found that there was a draft plan with a technical description - "fully armed unicorn". The "long-distance moving component" mentioned in it is to install a breakthrough rocket on the back of the "Unicorn", so that it has the ability to move at a high speed over long distances. According to the explanation, although the entire draft plan has been stalled and has not been implemented, the relevant control programs have been installed in the "Unicorn", and as long as it is connected to the rocket control port, it can fully realize the parallel launch operation of multiple rockets.

The A-4 rocket naturally adopts the technical specifications of Alfheim, and the connection port of the Unicorn is completely common, and after several simulated starts, after confirming that the starting signal and connection are not abnormal, the Unicorn is loaded into the Endeavour as a control unit, and the transformation of the rocket to fix the shell of the Endeavour hull begins. After more than a dozen sleepless days and nights, the technicians finally completed the modification before the decisive day.

With the propulsion of 6 metallic hydrogen rockets, it was enough to push the floating Endeavour to an altitude of 20,000 meters, but due to the fear that the hull structure and the crew's body could not withstand it, and the excessive altitude would accumulate too much kinetic energy during the descent process, causing problems in handling, the final ceiling was limited to 14,800 meters.

But even with such a compromised value, it is still a dangerous journey for the crew of the Endeavour, and the slightest mistake can be completely wiped out.

Based on the ground, the standard atmospheric pressure is 101.2 kPa, and the oxygen content is 299.3 grams per cubic meter. This is altitude sickness. Generally speaking, altitude sickness is triggered when entering an area above 4,000 meters above sea level, and the incidence of altitude sickness varies depending on the speed of entering the plateau area, physical fitness, and other conditions. At an altitude of 4,200 meters within 3 days, the incidence of acute altitude sickness was 83.5%. However, when the 2260 m was adapted to 4200 m in 7-15 days, the incidence rate was only 52.7%.

So what happens when you ascend to 14,800 meters in a few minutes? The answer is that the incidence of altitude sickness is 100% without protection, and it can be accompanied by various complications. At an altitude of more than 10,000 meters, the oxygen content is only 20.93% of that on the ground, and the air pressure is only about 30 kilopascals. Not only will it suffocate, but its lungs will burst on the spot, and the scattered blood will freeze in an instant in the wind of minus 30 degrees Celsius.

What Endeavour is entering is this hellish forbidden area of life.

If it weren't for Valrhona and Dendrobium Lan to continue to carry out the technique of isolating low temperature and air pressure, the ship would have been full of corpses.

Using a unicorn to control the rocket flight and the ship's attitude adjustment, and using the dendrobium orchid to open the barrier to maintain the hull - this head-slapping solution actually succeeded in sending the Endeavour to an altitude of more than 10,000 meters, and no one fell in the process.

"Rocket thruster detachment. ”

With the command, the huge streamlined rocket split from the tail of the Endeavour, and the flaming body of the missile fell in four directions, and the hull of the Endeavour in the center glittered in the sun, becoming the crossover core of the four shining points.

This scene is like a blooming flower, with a cross pattern painted in the sky.

The Endeavour, which had lost its propulsion, climbed some distance under the action of inertia, and when it reached the highest point of 14,800 meters, the hull of the ship was slightly stunned, and the bow began to sink towards the ground.

The second gate, which was more difficult and dangerous than climbing, opened the door to Roland and them.