Xiao Weiguo's mood is also very excited now, the M29 jet is made by his Dragon Soul Ordnance Complex, which is the world's first jet aircraft, which has him, as well as the efforts and sweat of everyone in the Dragon Soul Ordnance Complex. The M29 Athletic was designed in a aerodynamic shape based on the aerodynamic design of the first generation jet fighters such as the J-5 and F86, but it was not identical. It also features more advanced jet fighter designs, such as sloping air intakes on the sides of the fuselage, a conical nose, and a bubble canopy. These are even the shapes that only third-generation fighters have. With this shape design, it is even more advanced, and there is no aircraft in the world that has a pointed nose, air intakes on both sides, and a large swept wing design. This form factor is much more beautiful than the German ME262 and the like.

The M29 jet is parked on the runway, although it is still in the primary metal color and not painted, but it looks even more majestic and murderous! Next to its cockpit, it was sprayed with the M29 and the Dragon Soul Armament logo.

Seeing this plane, Xiao Weiguo seems to have returned to his previous life, this plane seems to have come through time and space! Although the world's first jet fighter was also completed by the Messerschmitt company in the previous life, it was in August 1942 that the practical Me163B developed by the German Messerschmitt company successfully flew test. But it was just a fighter with a rocket engine, its engine worked only a few minutes, and the combat radius was less than a hundred kilometers, and the performance of another jet fighter, the Me-262, had a noticeable increase. It was equipped with two Junkers turbojet engines, with a total thrust of 1,800 kilograms and a test flight speed of 960 kilometers per hour, although it was not until November 1943 that the jet fighter entered mass production. Become the world's first practical jet fighter.

Now everything has changed! Because of the appearance of Xiao Weiguo, not only did the Vulcan cannon appear in this world, but the jet age also came more than ten years ahead of schedule! The M29 jet has a metallic hue all over its body, and it's huge! Xiao Weiguo is okay, he has seen a variety of large jet fighters, and he doesn't think it's big when he sees the M29 jet. Because he had seen heavy fighter planes that were more than 20 meters long and weighed more than 30 tons, compared to those fighters, the M29 jet was only a small one.

But Messerschmitt and others are different, especially the Holden brothers, after they joined the Dragon Soul Aircraft Manufacturing Co., Ltd., they also learned a lot of new technology and knowledge, they have seen propeller fighters, but obviously this M29 jet body is thicker, compared to those non-all-metal propeller fighters look much heavier. If not for the Thunder jet engine. And how can it fly?

Everyone walked up to the M29 jet and reached out to stroke its skin, although the skin manufacturing process is not very good now, you can see dense rivets everywhere, and some openings and gaps in the fuselage are relatively large, but this is quite good! Compared to those piston propeller fighters, the M29 jet is already far ahead in terms of technology, and it can be said that it is not in a class.

Rema asked curiously, "Mr. Philip." The M29 jet is really big! Can it really fly more than twice as fast as today's propeller planes? ”

Xiao Weiguo laughed and said, "Of course! You can see the thunder jet engine at the tail of its plane. You also know that the thrust of a single Thunder jet engine is more than 2,000 kilograms, so it pushes the M29 jet that weighs just over 4 tons. It can reach speeds of more than 800 kilometers per hour! I even think it won't be long before it can surpass the speed of sound with some modifications! ”

When everyone heard this, they all gathered around curiously, and Rema asked, "More than the speed of sound?" Is there really an airplane in this world that can exceed the speed of sound? ”

Xiao Weiguo said: "We can do it!" When it comes to the supersonic flight of an aircraft, it is necessary to talk about the relationship between the air and the speed of sound propagation. When an airplane is in the air, it acts on the surrounding air, causing changes in airflow parameters such as air density, pressure, and speed. That is, the aircraft has a disturbance to the air. Air is an elastic medium that can be compressed, and when disturbed in one place, this disturbance will propagate in all directions through the interaction of air layer by layer. Disturbances that propagate in the air take a certain amount of time. The speed at which this sound travels is the speed of sound. For an aircraft to achieve supersonic flight, first, the thrust must be large enough, and second, the aircraft structure and aerodynamic layout are reasonably designed. Because when the aircraft is flying close to the speed of sound, because the airflow speed on the wing surface is faster than the head airflow velocity, a shock wave is generated at the wing first. Shock waves can affect the stability of an aircraft, especially when flying close to the speed of sound. That's why our M29 jet uses a swept wing to move the shock wave backward and solve the biggest obstacle to supersonic flight. ”

"In addition, supersonic flight also has problems to be solved in terms of airframe structure, air inlet design, and aerodynamic heating. Due to supersonic flight, the inlet front airflow cannot automatically adapt to the needs of the engine and introduce the appropriate flow rate, which is prone to overflow. Therefore, with the increase of speed, the aircraft air inlet has also changed a lot, and the structure has become more complex, which is also a prerequisite for ensuring the stable operation of the engine after the performance and speed are improved. The size of the aircraft air inlet is unchanged, but the demand for air volume of the engine is different when flying at high speed and low speed, especially when flying at supersonic speed, the amount of air entering the air intake exceeds the actual demand of the engine, and if it is not excluded, it will lead to additional resistance, therefore, the supersonic air inlet should be designed with a bypass system, and when the air exceeds the engine demand, the bypass system will be turned on to discharge the excess air. The supersonic flight of the aircraft will also produce aerodynamic heating on the nose and other parts, and the highest temperature may even reach more than 200 degrees, which is also a test for the materials and structure of the aircraft! Xiao Weiguo said eloquently.

Rema said excitedly: "Ah, Mr. Philip, then if our flying wing uses a jet engine, I don't know if it can exceed the speed of sound, it would be great if that way!" ”

Xiao Weiguo shook his head and said: "It is still very difficult for the flying wing aircraft to achieve supersonic speed, and its aerodynamic shape is not suitable for supersonic flight!" In the case of supersonic flight, the control of the attitude of the aircraft is even more of a problem! Well, today we will first conduct a ground taxi test, and if there are no problems, I think today the M29 jet will be able to fly into the blue sky! (To be continued.) )