Doomsday: I Build a Space Fleet

这型四涵道风扇无人机的主体结构是一个长2米1、宽1米8、高60厘米的大方盒子，这个方盒子下方可以悬挂一把电磁震爆武器和一个大喇叭。

It is powered by four ducted fans with a diameter of 0.72 meters.

Even under full load, this drone can still maintain a 30-minute flight time, after all, it is only a patrol drone.

On the third day after landing on the shallows, the advance of the unmanned combat group went relatively smoothly, but the situation took a sharp turn for the worse the next day.

On the fourth day after landing on the shallows, the advance of the unmanned combat group in the southern half was hindered as a large number of flying zombie birds flew in from the southwest, frantically attacking the unmanned combat group.

Although the unmanned combat group successfully intercepted the zombie birds using the four-sided phased array radar of the Type 21 infantry fighting vehicle and 30mm proximity-fuze high-explosive shells, the roar of the 30mm autocannon attracted the silent zombies in the surrounding streets.

To avoid losses to a large number of unmanned combat units, the unmanned combat group in the southern half had to fight and retreat, leaving the town.

"Tsk, I don't know what's wrong with these idiots."

Lorraine sighed and stood up from the chair in the design room.

"Who knows?"

"I'm slumped in my chair," Ouyang Nian said helplessly.

Since receiving the battle report from the unmanned combat group at 11:49 a.m., the two of them have been working hard here all afternoon, and have produced this simple and easy-to-maintain quadruple-fan unmanned aerial vehicle.

The main body of this drone is larger than the experimental model, with a width of 2.3 meters, a length of 2.42 meters, and a height of 85 centimeters. Its code name is Barn Owl.

This type of drone can be equipped with a wide variety of weapons. If you want to improve its endurance, a twin-mounted QJD-10 electromagnetic machine gun plus two 3800-round drum magazines can tear apart any lightly armored or unarmored target, and the endurance can reach 5 hours.

To achieve maximum lethality, the drone can be equipped with two twin-mounted 40mm electromagnetic cannons and 60 rounds of 40mm ammunition.

If you equip this type of drone with two 25mm electromagnetic grenade launchers, you get a floor cleaning machine that can fly for three hours and has 150 rounds of ammunition.

Of course, subsequent improved versions of this drone also support the installation of anti-aircraft weapons, but if it is only for shooting birds, then a twin-mounted electromagnetic machine gun is sufficient.

On the fifth day after landing on the shallows, the unmanned combat group on the south side received 40 owls equipped with twin-mounted electromagnetic machine guns, which had been manufactured overnight.

As soon as the unmanned combat group from the south entered the city and began clearing out the remaining zombies, these zombie birds took off from the rooftops not far away and flew towards the unmanned combat group.

However, they were attacked by 20 Barn Owl drones as soon as they took off, and were instantly turned into puffs of blood mist.

To enhance their lethality, these 40 Barn Owl drones are even equipped with piercing steel nails.

This ammunition begins to spin the moment it hits a zombie bird, turning it into a cloud of blood mist. Its remaining kinetic energy can even shatter another nearby zombie bird.

To expedite the operation, the unmanned combat group below will deploy two Hound combat platforms equipped with electro-optical masts and sound-emitting devices to make noise and attract nearby zombies once they enter the city.

After the Barn Owl drones flew 60 sorties, not a single flying zombie bird could be seen in the sky anymore.

Meanwhile, due to the sound of machine guns firing at full capacity the previous day, almost all the zombies within a 2-kilometer radius gathered within 500 meters in front of the unmanned combat group.

Seeing such an efficient combat method, Lorraine immediately added 80 machine gun-equipped barn owl drones to the production line, and behind these 80 drones were two other types of airborne weapons.

On the fifth day after landing on the shallows, the unmanned combat groups on both the north and south sides were equipped with 40 machine gun-type Barn Owl drones and 20 grenade-type Barn Owl drones.

With the assistance of drones, the advance speed of the unmanned combat group increased from 2 kilometers per day to 5 kilometers per day, and another small port was in front of the unmanned combat group to the north.

However, this small port has navigation restrictions, allowing only small boats with a width not exceeding 6 meters and a length not exceeding 27 meters to pass through.

On the evening of the sixth day after landing on the shallows, the unmanned combat group on the south side had advanced to the edge of the farmland, and barbed wire was also laid along the main road on the east side of the combat group.

At this point, an irregular area measuring 16 kilometers long and 4 kilometers wide on the south side of the ordnance processing zone was completely cleared.

The advance of the unmanned combat group on the north side was hampered by a river surrounding an airport, and it only completed the urban area within a 1.5-kilometer radius of the coastline.

Because the river flows past the south side of the airport, and the northeastern part of the airport is directly adjacent to the city.

To speed things up, these unmanned combat groups could only complete the blockade of the road on the west side of the airport under the cover of night, preventing zombies from the neighboring city from entering the small hangar and terminal.

The nighttime operation went smoothly. The unmanned combat group near the coastline used barbed wire and portable sandbag bunkers to separate this narrow urban area from the area to the north.

After leaving behind a certain number of smart turrets, the unmanned combat group on the north side withdrew from this urban area and devoted all its forces to clearing out the airport.

To safely and efficiently clear the area of ​​zombies, the unmanned combat group also deployed the two Rainbow 1 drones.

After being equipped with sound-emitting modules, the two drones flew low overhead with a piercing noise, attracting all the zombies in the urban area near the terminal.

Unmanned engineering machinery then moved in and quickly blocked the roads in the area using portable sandbags and modular bunkers, isolating the entire airport from the surrounding urban area.

"Sigh, how long is this lousy war going to last?"

The good news is that the unmanned combat swarm that was speeding south has successfully reached another, larger military factory.

The military factory and the surrounding security zone cover an area of ​​4.82 square kilometers. Based on the equipment in stock, the factory is mainly responsible for producing various types of self-propelled artillery.

They have dabbled in everything from export-grade twin-mounted 80mm self-propelled mortars to 105mm anti-tank guns and 155mm self-propelled howitzers.

Moreover, not far from the self-propelled artillery is a factory that produces various types of shells, and its warehouse contains a large amount of sealed raw materials.

Looking at the densely packed urban area and the ample ammunition, Lorraine decided to stop hesitating and prepare to deploy heavy artillery clusters near the front lines, ready to bombard the incoming zombie horde at any time.

Once the airport is operational again, Lorraine will immediately deploy unmanned transport aircraft to drop a large number of unmanned combat units near the two mines, quickly eliminating the six silicon-based biological clusters.