Chapter 1201 Huaxia Eagle Flock 3
ps: If you want to hear more of your voices and receive more of your suggestions, search for the WeChat public account "qdread" now and pay attention to give more support to "Huaxia Sea Power"! "Hopefully, the Germans will continue to have aircraft like the ME262 in this plane." Xu Jie cursed the Luftwaffe in the office with a wicked taste! According to Xu Jie's estimate, the technology of this plane is about 6 years ahead of history, and if this estimate is correct, then around 1938, Germany should have the ability to develop jet aircraft. And when it comes to jet fighters in history, I am afraid that the most well-known World War 2 jet aircraft is probably the ME262 Storm Bird. This aircraft was once touted by some on the 21st century network as the pinnacle of German World War II aviation technology, and as an example of surpassing Britain and the United States. But in Xu Jie's view, it is correct that the ME262 is called a cross-era aircraft and the pinnacle of German 2 war aviation technology. But is it said to surpass the UK? Then let's wash and sleep.
Speaking of jets, then it is necessary to talk about engines, and in terms of propeller aircraft engines, Germany was finally thrown out of the street by the British. The BM801, which remained unchanged for 10,000 years, finally lost to the Saber engine of the British. And the liquid-cooled engines DB605 and Jumo213 series that the Germans are proud of are not as good as the British Gryphon engines, not to mention the H-type 24-cylinder liquid-cooled engines used by the Storm. In terms of jet engines, the Jumo004 engine, which is widely used by the Germans, has a maximum thrust of only 900kg. And the British Nien engine had already reached a thrust of 2270kg in ground tests before the end of the war. The Nien engine was the engine with the best performance and reliability among almost all the engines of its time, and what was even more terrifying was that almost all the aviation industry powers at that time, Britain, the United States, the Soviet Union, and France (Germany had already hung up, not counted) The Nien engine was used or a new engine was designed based on it. This shows the power of the Nien engine.
Aside from the numbers on paper, the biggest problem with 004 is stability. The Germans did not have too high requirements for the use time of this engine when they developed it, and according to the standards of the Luftwaffe, this engine can reach 50 hours of service life. However, the actual result is that the average service life of the JUMO004 engine is difficult to reach even 20 hours, as for the specific reason. Whether it is because the quality of German industrial processing is not up to par or the lack of resources, Xu Jie does not know. But what is certain is that the jumo004 engine is absolutely pitted! Be responsible for the vast majority of mechanical accidents at ME262!
Although it is not known what kind of jet the Germans will produce in this plane, there will eventually be a jet that can fly. And Huaxia and the Entente must also make their own jets to deal with the storm birds in this plane. In terms of engines, with the existence of the British BT class, then even according to history, the 2270kg Nien engine is enough to power the first generation of jets. Although the potential of centrifugal engines is not as great as that of axial engines, in line with the principles of adequacy, stability, simplicity and convenience for mass production, the first generation of Huaxia jet aircraft will still use centrifugal engines.
It's the same as choosing a propeller aircraft. Xu Jie also likes to refer to famous machines in history. Although I don't understand aeronautical design, let alone area ratio or something. However, Xu Jie also knows that the most classic of the first generation of jet aircraft are the MiG-15 and F86. The performance is good, and the requirements for the engine are not high, so it is basically enough to change it with Nien. But one thing that Xu Jie is not satisfied with is that the nose air intake directly affects the installation of the radar. Although historically, both the MiG and the F86 had all-weather fighters equipped with radars. But considering the electronic level of the 50s in history, Xu Jie really doesn't know whether the fighter jet in service around 1940 can be equipped with a better performance anti-aircraft radar when using the nose air intake. …
The early jets were not without air intake on both sides, for example, the F2H Kraken was air intake on both sides. But in terms of flight performance, it is really inferior to the likes of F86. So Xu Jie fell into a dilemma of whether to fly or fight around the clock. At the same time, Xu Jie is also considering another question, that is, whether it is necessary for jet planes to be on board. Historically, it was unnecessary. But judging from the current situation, it is possible that Germany in this plane is stronger than Germany and Japan in history combined! And the technology is progressing fast.
So he hesitated again and again. Xu Jie's instructions to the following are to study two types of jet fighters at the same time, one is to imitate the nose intake of the MiG-15, equipped with a single high-thrust engine, and use the Chinese version of the MiG-15 with a swept wing. The other is a modified Banshee fighter that mimics the F2H's air intake method, with swept wings and two low-thrust engines. The former is to determine that there is a fighter with advanced enough performance, while the latter is to see if a breakthrough in performance can be achieved. At the same time, a modified version of the Banshee fighter will also produce a two-seater aircraft. Such aircraft were equipped with an on-board radar and were designed specifically for night combat. Jets are comparatively faster. In an era when artillery and rockets could only be used against the air, it was easy to miss the target in a night battle. So the effect of using the two-person pilot mode will be better, anyway, it's a night fight, the chance of air combat is very small, and the flight performance is a little worse, it doesn't matter much.
As for airborne weapons? Although Xu Jie will not press a 37mm machine gun on the MiG-15 like Mao Zi. But the original 20mm cannon obviously did not fully meet the needs. Xu Jie meant a 30mm long-barreled machine gun similar to the MK101 plus two 20mm guns, the latter probably using a boring gun that appeared only after World War II. Thinking about the German MG213 rifled gun's rate of fire of up to 1,200 rounds per minute, Xu Jie was excited. This density of firepower, combined with the power of the 30mm gun, is enough to deal with any air target.
In addition to fighter jets, jet bombers were also included in the R&D program. Historically, the Germans did come up with jet bomber designs like the AR234. But the real first generation of jet bombers in history also started with the TU16. From the point of view of the bombing effect, the accuracy of high-speed jet bombers is not as good as that of propeller planes when attacking with ordinary bombs, because in the era when there were almost no fire control computers, the lower the speed of aiming with optical primitive sighting equipment, the better. Jets are too fast. This is the reason why the AD1 Sky Raider in the United States can be used until the Vietnam War. The only advantage of the jet bomber is its penetration performance at high altitudes and high speeds. A jet bomber that breaks through from an altitude of almost 10,000 meters is an absolute nightmare for propeller aircraft.
In addition to bomber accuracy, Xu Jie is still not a newcomer to jet engines in this era, you know. Even in the Korean War, the VK1 engine made by the Russians in imitation of the Nion engine had a life span of only 110 hours. Later, although it improved, it was less than 160 hours. A bomber can perform a mission much longer than a fighter, if the same life engine is used, the fighter may be able to perform 60 missions, while the bomber may only be enough to perform 30 missions, and the fighter can use a high-thrust engine, and the bomber needs at least two. The solution to this problem is not impossible, and it is enough to directly adopt a hybrid of propeller and jet engine. However, Xu Jie has not studied the hybrid aircraft in history. So simply leave this problem to the R&D department to solve on its own.
In the end, Xu Jie decided to carry out research on jet bombers, even if they were not used in large quantities in the war, they could be used as a technical reserve, or small batch production, and then used as a penetration force to add guided weapons to strike at key targets. For example, capital ships, power plants, oil fields, or factories, etc. …
Behind the jet aircraft development plan submitted by the General Armament Department, there is also a rocket weapons research program. This plan was added on an ad hoc basis, and the plan for the development of air-launched rocket weapons was due to the fact that the air force units participating in the war responded that all kinds of machine guns were very difficult to deal with bomber units, and the machine guns were not powerful enough to be short, and the trajectory of the guns was bent and the firing range was not enough. And the weight of the 30mm cannon is really unsatisfactory. After all, no matter how good the armor protection is, no one wants to pass through the rain of bullets from large-caliber machine guns. Therefore, the Air Force asked the General Armament Department to develop an anti-aircraft weapon that could be used outside the range of the opponent. And it just so happened that the Air Force learned that the army was engaged in rocket artillery. So I wondered if I could change the army's rockets and throw them on planes to fight bombers. It's good to hit it, but it's okay to destroy the opponent's formation if you don't hit.
Xu Jie is supportive of this weapon, after all, in the European battlefield in history. The Germans used all kinds of rockets to attack British and American bombers, although the direct killing effect was limited, but many bombers were killed because the formation was scattered. In fact, Germany's anti-aircraft rockets took a detour at the beginning, that is, those super-large rockets of even larger caliber. The weight of these rockets is huge, and the general single-engine fighter can only be loaded with 1 round, and the twin-engine bomber is 2 rounds, although the ME410 twin-engine aircraft has a special modification of the use of wheeled rocket launchers (similar to rocket launch nests, a group of 6) but because of the sad way of placement, only 2 rounds can be fired at a time. Such a small bomb load and launch speed made it difficult for the already tragic rocket to hit the target. Even if the other side is a slow and big target like a bomber!
But in the end, the Germans finally got the hang of it. An R4M anti-aircraft rocket with a caliber of 50mm was designed. These small rockets are mounted on wooden pylons, and one ME262 can carry 24 rockets. In this way, at least the number of salvos is guaranteed. Make up for the lack of accuracy through quantity. In fact, in the 50s, when air-to-air missiles were not yet mature, rockets were still one of the main weapons used by fighters to intercept bombers, for example, the F89 Scorpion interceptor aircraft of the United States in history began to be the main bomber with more than 100 rockets at high altitude.
As a traverser, Xu Jie naturally knows that small-caliber rockets are the trump card against bombers in the future, and if they can be added with melee fuses, they can greatly increase the power of this weapon. Of course, it is also possible to increase the volume of the rocket appropriately in order to accommodate the electronic equipment that can accommodate the warhead. As for taking this rocket one step further and developing air-to-air missiles? This can only be said to be a technical reserve first, and then let's talk about it later.
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