The fears of the commanders of the Celestial Forces are very necessary. Because in order to increase the bomb load, their airships dismantled all the defensive weapons they had installed, and this dismantling was deemed necessary.

First, in the sky, the Qin State has not yet encountered an adversary, and second, these weapon systems take up a lot of space. Medium airships, for example, were equipped with a three-inch gun and two mini-guns. But now the Qin State will have to meet their first adversary in the sky.

In fact, the equipment of the Qi Air Force was far less advanced than the Qin State airship thought. They barely mastered some of the techniques of hot air balloons after heavy losses. For example, control the size of the flame, and so on. Previously, all of the original pilots they experimented with had died in air crashes. Either the airbag burns out. Either it landed too fast and fell to the ground. There are also not many people who participate in the Air Force. And the price of materials is very expensive.

But after all, there was a fierce rival in the sky in the Qin State. The Qin army tried to communicate with the Yan army, hoping to use some weapons to be installed on the airship for defense, but the Yan army refused to borrow it. They also don't have many weapons. The number of artillery pieces was destroyed by the Mo family. Often attacked by unknown men in black, as well as some swordsmen, the number of artillery and shells decreased a lot.

Not only that, but even the minigun, which they trusted so much, was destroyed. There are only three of them. And the Qin army had to be armed with two machine guns at once. This is something they cannot accept in any way. In desperation, the commander could only ask for help from the rear.

The message was transmitted back by telegram through the Qin embassy in Sinzheng, South Korea. The General Staff convened a meeting of the officers of the Celestial Army to study this new topic.

The result of the meeting was the dispatch of Qin's new flying machines. The plane went to fight. The number is only five.

At this time, the development of Qin's aircraft was relatively rapid, and Qin's country solved the production problems of various steels, such as the distinction between hot-rolled steel and cold-rolled steel. And some special steels, such as stainless steel, are also manufactured, in small quantities, mainly used for the production of some special machinery. There is also tungsten steel, as well as special alloy aluminum. The emergence of these materials has accelerated the production of engines in Qin State a lot.

At this time, three models of different fuels appeared in the Qin State engine. diesel, gasoline, and kerosene. Kerosene machine because of some of its inherent shortcomings. It is easy to catch fire and become a very small number of engines. Diesel engines and gasoline engines have become the main models.

Diesel engines are mainly used in tracked mechanical vehicles, because diesel engines are still a bit bulky. And it's very difficult to activate. It is mainly used on tractors. Some small and medium-sized companies in the Qin State were improving their production of agricultural machinery to replace those slaves in the fields.

The emergence of gasoline engines is mainly due to the emergence of spark plugs, without which gasoline engines may not be able to develop. But now the gasoline engine is in. The advent of the gasoline engine suddenly began to exist in various industries of the Qin State with his advantages.

Gasoline engines are lighter than diesel engines, and they are fast and light to start. And most importantly, there are many extended products for gasoline engines. The students of Xianyang Institute of Technology built the first five-cylinder star engine in the Qin State through mechanical construction, which was powerful. It is much more convenient than a diesel engine.

A piston engine in which the cylinders are arranged in a star shape around the crankshaft, and the number of cylinders is odd. Before the advent of jet engines, piston aircraft engines mostly adopted a star-shaped design, which was widely used by carrier-based aircraft because of its short crankshaft and strong battlefield survivability, and because of its compact structure and small space occupation of aircraft. These design ideas were not known to the researchers of the Qin State. They only know that if a star engine is used, then the plane can fly faster and higher.

After solving the most important engine of the aircraft. Qin's aircraft developed rapidly.

Like the planes of World War I, the planes were made of wood and skin, and some aircraft also used a hybrid pressed plate that was lighter and more durable. It is also commonly known as plywood. This kind of board is isomorphic peach gum or pine gum plus some white glue mixed on a hydraulic press for strong stamping, and the board often has the characteristics of more than two kinds of wood. Therefore, it has become an important material for aircraft.

The operating system of the aircraft is also more perfect, and the pilot has an operating position, so he does not have to lie on the plane. Most of the aircraft have straight wings and are more than two stories high. This way the wing can provide enough lift. However, the range of the aircraft is very limited. The plane is equipped with a gauge, altimeter. And the pilot has to wear a watch, a watch, for himself. Since the wings are solid, the fuel tank of the aircraft can only be placed in the skin in the belly of the aircraft, and because of this, the range of the aircraft is limited. Pilots have to pay attention to the time themselves, they can only fly for an hour. If there were too many, the plane would have to fall from the sky.

Because of this, many novice pilots often ignore this reason, and a large number of new pilots fall off during training, either breaking their legs, arms, or necks, and dying.

The altitude of the aircraft is also very limited. Fly up to a position of about 1,500 paces, when you reach this position. The gasoline starts to solidify, or something else is wrong.

Therefore, the altitude and range of the aircraft are still very limited. And not only that, but also when it comes to landing. With no landing gear, the Qin State needed a wheel that was resilient. But this kind of wheel Qin researchers could not be satisfied. As a result, an alternative wheel, the spoked wheels of bicycles, is lined with softer wood as landing wheels, but this still causes the pilot to panic when landing. Landing became a fatal blow for the pilot.

But it is such an aircraft that still supplies Qin's heavenly army in batches, and for this reason, Qin has set up a fast-flying brigade. Their aircraft are fast and nimble. Lightweight. Mainly do some reconnaissance, take photos and so on. As for weapon systems. Only the pilot's gun.

The idea of sending planes from the top was for them to drop bombs. Because they can throw stones at low altitudes. This high-level has seen it all. So, they thought they could drop bombs. Sending planes can also test the power of this new type of aircraft.

And just like that, on the Eastern Front, a new type of weapon was put into service. Plane. Together, airplanes and airships will dominate the skies. And the hot air balloon still used by the Qi Air Force. The war was fought from the ground to the sky. The war became a two-dimensional space war. The scope of war can be extended to the heavens.