Although these navigation equipment cannot cover the Japanese mainland and cannot implement precise navigation to selected targets, in fact, the Anti-Japanese Alliance's precise navigation for bombing Japan was only implemented after the arrival of radio navigation equipment assisted by the United States and Britain and the adoption of American and British navigation technology. Achieving true full-range radio precision navigation.
But even this kind of navigation equipment is relatively simple and cannot cover the Japanese mainland. It can only be said to indicate the direction of bombing. Compared with the Japanese Navy's usual navigation method of using sextant, at least it has a lot of technical advantages. With progress, the requirements for pilots are not so stringent.
And in Yang Zhen's view, these navigation equipment are only a preliminary solution, because before the arrival of the US and British strategic bombers, the Anti-Japanese bombing campaign against Japan was limited by the performance and quantity of the bombers. It was symbolic at best. As for the real comprehensive Strategic bombing, at least for now, might as well go to hell.
Although the only range used by the Anti-Japanese Alliance was sufficient, the Il-4 bombers had poor self-defense firepower and a small bomb load for long-range flight. The bombing of the Japanese mainland was just a meaning, a meaning, and an attitude to the United States and Britain. On this point, These devices are rudimentary, but they are better than nothing.
In addition to being symbolic, it is more about the nature of military training, as well as the study and solution of some technical problems that may arise, so as to prepare for the next stage of the real strategic air attack on Japan's mainland, and to sharpen the sword without making any mistakes. Fireworks, this is Yang Zhen's main purpose.
Navigation problems have been solved for most of the flight, especially for long-distance cross-sea flights. As for the remaining 200 kilometers, for the pilots participating in the air raid, they only need to fly straight east to reach Japan, and there is no chance of getting lost again. The possibility is already slim.
If you can still get lost in this way, then Yang Zhen should really consider the training level of his aviation force pilots. As for the two airborne equipment that can receive radio broadcast signals from Japan, they can be used as aircraft for navigation deep into Japan. Consider For confidentiality reasons, Yang Zhen was determined not to allow these two planes to enter the Japanese mainland.
Although the radio signal navigation and capture equipment on these two aircraft are rudimentary, neither the Japanese army nor the navy has such equipment. Once these two aircraft have problems and crash or are shot down in Japan, these equipment will fall into the hands of the Japanese. Then the unlucky one is the Anti-League itself.
The Japanese army and navy can completely rely on local industrial capabilities to imitate or even improve the performance of these equipment, and take off from the mainland to bomb the rear bases and industrial areas of the Anti-Japanese Alliance. Although the performance of the Japanese Navy's Type 96 bomber is somewhat lagging behind, it can only reach 4,000 kilometers. It took off from the Japanese mainland with a super long range, and there was absolutely no problem in bombing the Anti-Japanese Alliance.
Therefore, in order to avoid any accidents on these two planes and prevent the airborne equipment on these two planes from falling into the hands of the Japanese army, Yang Zhen still insisted on the aviation force that these two planes must not enter the Japanese mainland, and even strictly stipulated that the bombers should be sent to After arriving at the signal junction, you must return immediately.
Although to put it bluntly, this device uses high-power shortwave radio signals. When the signals are in the same frequency band and the same power, mutual interference will occur after the signals cross. The so-called signal intersection point is where the mutual interference is strongest. area.
As long as you find this area, you have found the intersection of signals. Such equipment and principles are actually not complicated, but the conception and development of the equipment have taken a lot of effort. No matter how imperfect this batch of equipment is, it is absolutely impossible fell into the hands of the Japanese.
Therefore, even though the equipment on the two planes can use Japanese radio broadcast signals for subsequent navigation, Yang Zhen still insists that these two planes are absolutely not allowed to go deep into Japan. Once the plane fails, or it is on the coast of Japan In the event of an interception by Japanese aircraft, it would be better for these equipment to fall into the sea than fall into Japanese hands.
At the same time as the navigation problem has been initially solved, the aviation force has also initially solved the problem of long-distance formation flying, using the Japanese Navy's sextant method for long-distance cross-sea flight to identify the heading in the air, and a series of other technical problems. The aviation operations department also followed Yang Several bombing plans were proposed at the request of the earthquake.
It is precisely because of Yang Zhen's request that when the Anti-Japanese bomber group penetrated into the Japanese mainland, they could only rely on aviation maps and ground reference objects to fly. However, after solving the basic maritime flight navigation problems, the remaining problems were not Whatever the problem is, it can be completely solved through training.
After solving the most difficult technical problems, the aviation force also proposed three bombing plans in order to ensure the bombing of Japan. First, the bomber groups took off from Mudanjiang and Linkou airports, converged over Dongning, and crossed the Soviet Primorsky Territory. , flew over the Sea of Japan and bombed the Japanese Nakajima Aircraft Company in Oshima Town, Gunma Prefecture, Honshu.
Nakajima Aircraft Company is the largest manufacturer of Japanese Army combat aircraft. Taking this place as a main bombing target and destroying it can significantly reduce the Japanese Army's aircraft production and manufacturing capabilities. When Yang Zhen issued an order to conduct research on bombing Japan After that, the aviation force made this the first choice bombing target.
The second plan is to take off from Dongning and Ning'an respectively, merge over Hunchun, enter the Sea of Japan via the Tumen River estuary, and then turn to the southeast, heading straight for Hachiman in Kitakyushu Fukuoka Prefecture at the southern tip of Japan, which is the largest in mainland Japan. The steel plant, home to the Yawata Steel Works, would have a fatal impact on Japan's military production if it were destroyed.
And for the Anti-Japanese Federation, Fukuoka Prefecture not only has the Yawata Steel Works, the largest steel production base in Japan, but also the Kokura Army Arsenal, one of the large arsenals of the Japanese Army. The entire Kitakyushu territory is densely covered with various arsenals. Choose this place as a The target was aviation, which was decided after careful consideration.
The third plan is more risky, which is to take off from Wangqing and Tumen, use the cover of P40 fighter jets to meet over the Hamgyong Mountains in northern North Korea, and after arriving in Japan, fly over the entire Honshu Island and attack Osaka, destroying the base in Osaka. Osaka Artillery Factory, the largest gun manufacturing plant of the Japanese Army.
The three choices of the aviation force have different routes and targets, but the targets are all important military production areas of the Japanese Army. In addition to considering that the current main opponent of the Anti-Japanese Alliance is the Japanese Army, it is also because of Yang Zhen’s order to use Yang Zhen. In terms of earthquake, we neither have a navy nor rely on the sea, and our main enemy is the Japanese army.
Since it is determined to bomb the Japanese mainland, the main goal is to destroy the combat effectiveness of the Japanese Army. Whether it is the Japanese Navy's shipyards, naval bases, or military production capabilities, except for the naval aviation, which has a little relationship, the rest are all related to it. The Anti-Japanese Alliance has nothing to do with it. If you want to blow up their army and arsenal, blow up their army arsenal. The navy should let the United States and Britain have the headache.
Regarding the three options, the aviation force obviously prefers the first one, because the current base area of the Anti-Japanese Alliance is not close to the Sea of Japan. The routes that planes that bomb the Anti-Japanese Alliance can choose are either over the Soviet Union or the mouth of the Tumen River. Or the Korean Peninsula.
Compared with the latter two routes, which are within the operational range of the Korean, Japanese, naval and army aviation forces and have strict ground and air surveillance posts, the option of passing through the Primorsky Territory of the Soviet Union is obviously more attractive to the aviation forces. There is no other reason to choose this route. This route can avoid interception by the Japanese army and navy aviation forces stationed on the Korean Peninsula.
At the same time, it can also avoid the Japanese Army and Navy air surveillance posts on the Korean Peninsula, as well as the Japanese Navy surveillance ships along the Korean coast, which not only reduces the possibility of interception, but also ensures the confidentiality of air strikes. Choosing the first option can maximize Minimize the damage rate of air strikes.
What the aviation force did not expect was that the first plan was vetoed by Yang Zhen. Yang Zhen also wanted to enter the Sea of Japan via the Primorsky Territory of the Soviet Union, so that strict confidentiality could be maintained and the maximum possible outcome could be achieved. The suddenness of the battle, and at the same time, it was also the closest route from Jiamusi, the aviation base with the most complete foundation of the Anti-Japanese Alliance, to the Japanese mainland.
However, when the Soviets established their aviation force in the Anti-Japanese Alliance, especially when they sold Il-4 bombers with a range that could reach the Japanese mainland, they had already considered this and repeatedly warned the Anti-Alliance. Once the Anti-Alliance bombers flew over the Ussuri River, regardless of whether they Whatever its intention is, the Soviet Union will regard it as an invasion and will shoot it down without hesitation.
For the Soviets, who tried their best to avoid a two-front war, they would never allow the Anti-Japanese Alliance aircraft to fly through their own territory to bomb the Japanese mainland. This route was also a secret reconnaissance route for Japan by the Anti-Japanese Alliance. It was conducting navigation technology During the development period, the Anti-League's technical aircraft used this route to enter and exit many times.
Yang Zhen vetoed the choice of aviation. In addition to not wanting to be too rigid with the Soviet Union at this time, the most fundamental factor was that Yang Zhen still did not want this secret route to be exposed, because once the Anti-Japanese Alliance aircraft carrying out secret technical reconnaissance missions were exposed, It will no longer be possible to enter or exit the Sea of Japan via the Soviet Union.
Although most of the Soviet Army in the Far East has been transferred, it still retains an air defense force in the Far East, mainly composed of the Pacific Fleet Naval Aviation. Although they are all old I-15 and 16 fighter jets, There are very few new aircraft.
However, these old-fashioned fighter jets are still a great threat to the Il-4 bombers with poor self-defense capabilities. Unless the Anti-Japanese Alliance dispatches fighter jets to escort and engage in air combat with Soviet interceptor aircraft, they will not hesitate to take the risk of publicly falling out. All the aircraft of the Anti-Japanese Alliance could not enter the Sea of Japan via the Soviet Union.
Because according to the character of the Soviets, since they have repeatedly warned, they will not hesitate to shoot down all the anti-alliance aircraft passing through the Soviet Union. The Soviets, who take their own interests very seriously, will never allow the anti-alliance. Actions that bring the slightest risk to yourself.
The most important thing is to pass through the sparsely populated Primorsky Territory of the Soviet Union silently in a single aircraft or in a small group. As long as the plan is careful, there is no big problem. However, a large aircraft group cannot sneak across anyway. , as long as you enter the territory of the Soviet Union, you can't avoid being discovered.
Moreover, in addition to aviation reconnaissance against Japan, this route also has other secret missions that cannot be exposed in any case. Therefore, after repeated consideration, Yang Zhen chose the following two routes for the aviation force, passing through the Soviet Union. The Primorsky Krai route was rejected by Yang Zhen.
However, considering the air surveillance of the Japanese Army and Navy on the Korean Peninsula and the possible interception, Yang Zhen still chose to use the Tumen River Estuary as the route to enter the Sea of Japan. Although this route may also be too close to the northern part of the Korean Peninsula, it was blocked by the Japanese military. Discover.
But on the other side of the Tumen River Estuary, some areas north of Rajin in the northern part of the Korean Peninsula, after the previous stage of operations, are actually under the actual control of the Anti-Japanese Alliance. Even if they pass through the Tumen River Estuary, there is a probability of being discovered by the Japanese army. It's not much bigger than the Soviet Union that took the route. It's just that there are Japanese blockade ships along the Tumen River estuary, so it's relatively more dangerous.