On September 2nd, Lu Chen got up and checked the progress of the UAV large-lift rotor, and found that Zero had deduced three schemes, one is to increase the ceiling to 4 kilometers, and the power consumption has increased by 50% compared with the original, and the second is to increase the ceiling to 6 kilometers, on the basis of increasing power consumption by 50%, the manufacturing cost has also increased by 50%, and the last one has been improved relatively high, the ceiling has been increased to 10,000 meters, and the power consumption and manufacturing cost have been increased by 100%.

Lu Chen saw this data, thought about it for a while, and finally chose the second option, the manufacturing cost and power consumption increased by 50%, and the first data improvement is too low, and it has to be improved again in the later stage, and the second kind of six thousand meters is already enough, as for the last 10,000 meters of the ceiling, it is a bit wasteful, 10,000 meters is equivalent to 10 kilometers, that is, a distance of 10 kilometers, with the electromagnetic gun that comes with the rotor drone is completely redundant, with the volume of the drone, six kilometers can already avoid most of the attacks, And at an altitude of 10,000 meters, isn't it fragrant to use fixed-wing drones?

So after choosing the second plan, Lu Chen made a batch of new rotors, and replaced the four drones that patrolled outside, and the replaced drone rotors were not scrapped, after all, the performance is still good, Lu Chen re-saved and packaged the replaced rotors, and prepared to go out in a few days as exchange materials, after all, the previous drones are estimated to be unusable on this day,

Then Lu Chen is ready to study fixed-wing UAVs, the current fixed-wing UAVs use oil-powered, electro-powered and oil-electric hybrids, and electro-powered UAVs have a short range, so the mainstream is still oil-powered and oil-electric hybrids, and what Lu Chen is currently lacking is fuel, so he can only vigorously develop electric power engines.

Lu Chen checked the relevant development history of the UAV through zero, and at the same time found some information on electric engines and turbojet engines for research, through research, Lu Chen found that the electric turbojet engine he originally wanted is currently not possible, the traditional turbojet engine enters the air through the air intake, and then after the pressurized gas, it is transported into the combustion chamber, so that the gas is heated and expanded, and the gas is sent to the turbine for discharge. However, because the existing battery energy density and heating methods cannot achieve a better price-performance ratio than using fuel turbojet, it is currently only due to laboratory research.

Then Lu Chen looked up the piston engine during World War II and found that the performance of the piston engine can also meet the requirements of his current needs, such as the speed of the Mustang fighter can reach 703 kilometers per hour, the ceiling is 12,800 meters, and the range is more than 1,500 kilometers.

Then Lu Chen logged in to today's Dragon Country Network through the quantum communication network, and found the information of the Mustang fighter, mainly the aerodynamic layout, and then Lu Chen began to design the UAV with the help of Zero, first transforming the third rotor of the previous calculation into a propeller aircraft's motor, replacing the piston engine, and then began to design the fuselage with reference to the aerodynamic layout of the Mustang, and also needed to install hidden weapons, including high-altitude fast cameras are also within the scope of research.

After a day and a night of research, Lu Chen finally designed a propeller drone, Lu Chen looked at the weird drone on the holographic workbench, and always felt a little awkward, "The pig's feet in those scientific and technological novels I read before, which one is not the second of the air, how can it be so difficult to practice it yourself?" ”

Lu Chen sighed, authorized zero to log in to his account and continue to look for information in the network, due to the solar storm, the last remaining wired network was destroyed, although the database and everything were protected without anything, but the data transmission lines were destroyed, so the dragon country used the existing quantum communication network to rebuild a small range of local area network, and then re-uploaded the conventional data to it, and major enterprises also re-established their own websites with the help of quantum communication,

Because Lu Chen's previous transactions were focused on by the state, Lu Chen was given an account to log in to the electronic library established by the state, with Lu Chen's permission, except for some confidential high-tech knowledge, all theories are open to him, and the country also hopes that Lu Chen can have more inventions, so that both parties can benefit each other and get what they want.

Now Lu Chen threw his account to Zero, and asked Zero to go to the Internet and the library to find some information about electric aero engines within his authority, including concept drawings, etc.

With the search of zero, the storage content in the computer room in the shelter is gradually rising, and the database of zero is also constantly enriched.

After a while, Zero had already downloaded the information of the electric aero engine, including the layout of some aero engines conceived by others, and finally Zero provided two feasible solutions for Lu Chen.

One scheme is suitable for small and medium-sized fixed-wing UAVs, that is, the use of electric ducted fans, which can be directly used on small and medium-sized UAVs, because the thrust is limited, so it is directly abandoned by Lu Chen, and the other is to use the working principle of turbojet engines, but on this basis, the combustion chamber is replaced with an electric heating chamber, and the compressed gas is heated and discharged from the turbine by using efficient electric heating, which will cause a certain amount of energy loss and the efficiency is much lower than that of the traditional turbojet engine. However, the advantage is that it can be used purely electric, without the use of fuel.

However, Lu Chen found that with his existing technical reserves, this idea could not be realized, and the power supply and energy were too low to meet the requirements, but Lu Chen saw the introduction of the ion engine in Zero's database, and the prospect was very good, but this will be talked about later.

After there was no better electric engine, Lu Chen began to change the original intention of using fixed-wing UAVs, the original idea was to be the most rapid support equipment to make up for the lack of long-range support, but now for the time being, if you can only do propeller UAVs, then you can refer to the AC-130 gunboat aircraft,

Lu Chen, the mutant ant reported by the official before, also knew about it, and later asked the official for the video of the battle at that time, looking at the ant nest in the bait trap, Lu Chen's heart was full of a sense of crisis, although the territory of the Dragon Kingdom was basically cleaned up, but it is difficult to guarantee that there are no fish that have slipped through the net, and in case a new mutant beast is born in the future, do you only expect official rescue?

And Lu Chen has been officially authorized to obtain a license for weapon manufacturing and research and development, which is a privilege of genius, and some important corporate shelters also have permission to carry guns, but it is only a pistol.

Despite this, if Lu Chen builds a big killer weapon like an aerial gunboat, it is estimated that the official will not be able to sit still, so Lu Chen is also thinking about what price to make the official relax.

Of course, when thinking about these, Lu Chen did not stop, and continued to design with the cooperation of Zero.

After several hours of adjustment and transformation, Lu Chen designed the prototype of the unmanned gunboat aircraft, and then began to simulate the flight on the holographic workbench, and the final data displayed was a ceiling of 10,000 meters, a flight speed of 600 kilometers per hour, an unloaded take-off weight of 700kg, and a range of 3,000 kilometers; With a full take-off weight of 2 tons and a range of 1500 km,

In the end, Lu Chen combined his electromagnetic gun technology with the technology of the Gatling machine gun to create a multi-barreled electromagnetic gun, using 10g projectiles, with a rate of fire of 2000 rounds per minute, and then Lu Chen transformed the unmanned gunboat machine, and installed two multi-barrel electromagnetic guns on both sides of the gunboat machine, and then Lu Chen added 100,000 bullets and automatic bomb feeding devices, and finally, the wind weight has reached 1.8 tons.