readx; The success of the GA6 allowed the Guang'an Aircraft Company to obtain great financial support and obtain extremely valuable technology for manufacturing and developing large-scale aircraft, and the Air Force also purchased a large number of GA6 aircraft to be used as a new transport aircraft, and gave the C4 transport aircraft a number. www.biquge.info The current C4 transport plane is the main transport aircraft of the Chinese Air Force, and the number of equipment has reached more than 60 planes, and several of them are special service planes, mainly for the use of military generals.

Due to the success of the two generations of transport aircraft, Guang'an Aircraft Company has also become the leading large-scale aircraft manufacturer and designer in China, and in the bidding of the Air Force's new generation of twin-engine bombers, the use of the GAX-19 test aircraft excellent surname ability, defeated the old Chuzhou Aircraft Company, and won the Air Force's order for a new generation of twin-engine bombers.

The GAX-19 test aircraft, which won the tender scheme, was also given the official designation of the B8 bomber by the Air Force.

The B8 bomber, made of all-metal, was equipped with two engines of up to 850 horsepower, which could carry 1,500 kilograms of bombs, and had a range of 1,700 kilometers and a top speed of 300 kilometers. Compared with the B4 bomber, the bomb volume of the B8 bomber has not increased, but the range is much farther, and more importantly, the maximum speed has increased very high.

Today, in 1931, the maximum speed of fighter jets in various countries was generally about 300 kilometers to 350 kilometers per hour, while the speed of dive bombers and bombers was actually only about 200 kilometers to 250 kilometers, and few were able to reach 300 kilometers.

The B8 bomber uses its high speed of 300 kilometers to give itself a good safety guarantee when bombing the surname. After all, the enemy's fighter jets can't catch up, so why shoot them down.

B8 bomber according to the normal production and service time, should not be so fast large-scale service, but like the F3 fighter, because of the outbreak of the war, so that many new equipment in advance to complete the research and development and a large number of equipment, B8 bomber is like this, before the outbreak of the war last year only a dozen, but after the outbreak of the war to today has reached the scale of more than 70 aircraft, and this is because Guang'an Aircraft Company needs to produce a large number of other aircraft at the same time, to a certain extent suppressed the production of B8 bombers.

In the past few months, China's three major aircraft companies are working overtime, trying to greatly increase aircraft production, Chuzhou Aircraft Company's F3 fighter has produced more than 300 in just three months, and the monthly output has exceeded 100 aircraft, and this speed still makes the Navy and Air Force extremely dissatisfied, the Air Force currently needs a large number of aircraft to participate in the battle, and the Navy also needs a large number of carrier-based versions of the F3 fighter to ensure the Navy's air supremacy on the sea, and the gap in F3 fighters in a short period of time is as high as several hundred.

This situation not only appears in F3 fighters, B8 bombers, but also in some other new equipment of the army and navy, because around 1930 happened to be a period of large-scale replacement of the Chinese side, whether it is the air force, the army or the navy, there is a large-scale replacement of the existing equipment, and according to the normal timetable, it is expected that it will be completed around 1930-1935, but now this Chinese war is accelerating [*** ] side's equipment has been updated.

Even the F3 fighters that have just been put into service for a short time have now undergone three batches of improvements, and the Type 91 fighters in this regard have also undergone several improvements.

These improvements are made by both sides after combining the previous battles and learning from experience. In order to counter the F3 fighters, they have made many improvements to the Type 91 fighters, and the engines equipped with them have also been replaced with more powerful engines, and the maximum speed has gradually increased to about 340 kilometers, and this maximum speed is no worse than the initial model of the F3 fighter of 350 kilometers.

In order to make the F3 fighter be greatly improved, not only the design and assembly manufacturer of the F3 fighter Chuzhou Aircraft Company has made great efforts, and the most important thing is that the designers of the aviation power subsidiary under the Shanghai Power Company have accelerated the research and development of several follow-up high-power aero engines.

In January 1931, Shanghai Power Company officially finalized a new engine S680 with 680 horsepower, and in the following two months, it successfully optimized the design of this engine, so that its power was increased to 700 horsepower, and it was finalized as S700. And the improvement of the F3 fighter was also solved mainly by replacing the engine with a higher power.

The initial model of the F3 fighter, the F3A, was equipped with only the S630 engine with a power of six hundred and thirty horsepower. The first modification of the F3 fighter F3C was officially launched in February 1931, equipped with the S680 engine, the increase in engine power made the F3C have a maximum speed of up to 365 kilometers per hour, and the climb rate and other maneuvering surnames in all aspects of the surname have been greatly improved. The third modification is the F3D, equipped with S700 engines, which slightly increases the top speed to 370 km/h and, most importantly, fixes some design failures with the two previous models of the F3 fighter. So that the overall surname of the F3D fighter can surpass the F3A by a grade.

At a time when the Air Force's F3 various modifications were constantly proposed, the Navy's F3 carrier-based model F3B was only purchased after a small number of tests, and it was found that although the surname was greatly improved compared with the F2, due to the withdrawal of the Air Force's subsequent two modifications, the Navy suspended the equipment of the F3B, and designed and improved the F3E carrier-based fighter according to the Air Force's F3C and the subsequent F3D prototype, which has begun to be in service with the Navy in batches.

The outbreak of a world war, the needs of the war made the surname of China's combat aircraft develop rapidly, half a year ago China's aircraft level was probably about the same as Britain, France and the United States, but in just a few months, the surname of China's combat aircraft surpassed that of other countries in the world. Of course, this is not to say that China's aviation technology has greatly surpassed them, but that the use of technology has advanced in advance, and if Britain, France and the United States also break out in war with others, then at most it will be able to launch a new generation of aircraft in a few months at most.

The development of military equipment has always been the most rapid development in wartime, and it will only be updated in three or five years in peacetime, and it will be replaced in three or five months in wartime.

While both countries were striving to improve their fighter jets and put them into combat, the skies over the Tsushima Strait also became a fierce battlefield for the air forces of the two countries.

The air forces of the two countries will have a large number of planes fighting in the air almost every day, and there will be aircraft losses every day, even if the F3 fighter with the surname can be advanced, it will not avoid the fate of being shot down.

On 24 April, the sky of the Busan Air Base Group had just dawned, and Huang Feihang ordered the bomber group to start attacking, and for a while, the group of planes that were lined up to the top began to rise one after another, and the many runways in the three surrounding bases had planes lifted off almost at the same time, and it didn't take long for the sky over Busan to be densely covered with planes.

The group of planes that took off in the air was first a whole group, and then a group of more than 200 planes formed a huge formation and began to fly southward, and it was not long before a large number of planes took off again in the Busan Air Base group, and a group of more than 200 planes was formed.

The two waves of planes flew towards Ben one after the other, and as soon as they crossed the center line of the Tsushima Strait, a squadron of F3C fighters that was cruising in the group had already spotted a squadron of Ben-91 fighters in the clouds ahead.

At this time, the Type 91 fighters above the clouds also discovered a large number of Chinese aircraft groups in the distant airspace, and this situation was something they had never discovered, although they had also fought with the Chinese Air Force over the Tsushima Strait before, but the Chinese Air Force had not prevented a huge air attack with a scale of more than 400 planes before.

Just when they wanted to turn around and go back and report back to China, a squadron of Chinese F3C fighters had already swooped down on them.

Immediately after that, a fierce air battle broke out, and the four Type 91 fighters were not the original model, but an improved model of the Type 91 Type 3, using a new engine of 650 horsepower from the Nakajima Company, which could reach a maximum speed of 340 kilometers. Although it is said that the surname of the 91-type 3 fighter can be greatly improved compared with the 91-type 1, but in the face of the F3C fighter that has also been improved, it is a great disadvantage.

In just a few minutes, a Ben-91 fighter was shot down, and in less than 10 minutes, all four Ben-91 fighters were shot down, and a Chinese Air Force F3C fighter was damaged and forced to make a forced landing on the sea.

After a flight of hundreds of kilometers, the sea surface below the aircraft group finally disappeared, and then many saw the land below, and the bomber group still maintained a cruising state at an altitude of several thousand meters, continued to cross a large area of land, and then went straight to the hinterland.

It is not something that can be concealed that a large number of Chinese planes have crossed the Tsushima Strait and entered the hinterland of the Chinese army, saying that "the native air force of this army will soon take to the air to carry out air defense operations, but in the face of the incoming fleet of hundreds of planes of the Chinese Air Force, there are nearly 100 F3 fighters escorting the escort alone, and sporadic interceptions by this aircraft will not help at all."

A few hours later, the B4 bombers and B8 bombers in the bomber group began to drop a large number of bombs, and these large numbers of ordinary aerial bombs were mixed with some napalm, and the main target of the bombing was an important factory called 'Ben'.

Although this bombing campaign only carried out daytime precision bombing, targeting only factories and military targets, it still caused a large number of civilian casualties, and in this day's bombing, at least 2,000 people were killed and wounded, and this was only the beginning of the bombing of the city.