Aircraft engines brought in from the rear, as well as broken aircraft and spare parts, are constantly being delivered. Yang Tianfeng was surprised by www.biquge.info the variety of aircraft types used by the National Army and Air Force, and the various engines also brought trouble and difficulties to aircraft manufacturing.

The manufacturing process of wooden aircraft is becoming more and more proficient, but the weight and volume of various engines are different, and it is definitely not possible to manufacture them according to the same specifications and dimensions. The key to the design and manufacture of wooden aircraft is the problem of counterweight.

The attitude of the aircraft is controlled by the static stability of the aircraft itself and the aerodynamic forces generated by each control surface. The center of gravity of the aircraft can change within a certain range without losing control. If the center of gravity changes beyond this limit, the attitude of the aircraft cannot be maintained, and stalls will occur.

The center of gravity of the aircraft is divided into two cases: the design center of gravity and the actual center of gravity, the former is fixed, and the latter is changing. The consumption of fuel, the launch of machine guns, cannons, rockets and other weapons will change the center of gravity, and this change must be controlled within a certain range to avoid flight instability and difficulty in aircraft control.

If the problem of counterweight is not solved, the aircraft will not be stable enough in flight, and it will produce flutter and even cause crashes.

Fabricating first, then pressurizing the cabin, or weighting the wings and fuselage, this is certainly one way, but it is not optimal. After all, it is difficult to make major changes to an aircraft that has already taken shape. Remanufacturing is a waste of manpower and material resources, and a waste of time.

Therefore, Yang Tianfeng should try his best to draw the shape and size of the aircraft on paper according to the weight and volume of the engine, and calculate whether the center of gravity of the aircraft is controllable. It must be much easier and more efficient to change on paper.

Paperwork and theoretical work are what Yang Tianfeng is best at. After several drafts, he basically completed the first design drawings by lengthening the wings and lengthening the tail of the aircraft. Although I can't say it's 100% right, it minimizes the possibility of remanufacturing.

Two 775-horsepower Wright Cyclone improved engines, seven 745-horsepower **** three engines, and three 710-horsepower **** two engines, which are all aircraft engines that will be shipped.

Among them, the Wright Whirlwind has all arrived, and **** three and **** two have only partially arrived. These are all types of aircraft that have been withdrawn from the active service of the National Army and Air Force, either because of mechanical failures, or non-combat losses, or forced landings due to injuries, and according to the maintenance capacity of the national government, these aircraft parts are almost scrapped. I believe that the government did not take these rags piled up in the warehouse seriously, and Chairman Jiang was also a favor.

It is estimated that there will be engines and parts for the I-15 and I-16 that will be shipped in the future, although these two Soviet-style fighters have lagged behind the international level at that time, they are the main aircraft of the current national * army and air force, and there are quite a few of them, and naturally there are many losses of all kinds.

Relying on these rags, he can barely cobble together an air force, but if he can defeat the devil, Yang Tianfeng does not have such confidence. Quantity is one reason, production capacity is even more critical, and not being able to produce important parts such as engines in-house is an insurmountable obstacle.

Of course, the model designed by Yang Tianfeng is advanced and mature, and the improvement of the wooden structure and engine has also made the performance of the aircraft manufactured a great improvement compared with the original model. The most critical point is that the aircraft designed and manufactured by Yang Tianfeng is designed for the sole purpose of air combat, and lightness, dexterity, agility and speed are the goals he pursues. Coupled with the advanced two-plane formation tactics, there is still a battle with the devil's plane.

The power of the First World War, that's all. Compared with the aircraft with thousands of devils, it is difficult to resist in any case, and it is possible to form an advantage only locally, in some specific situations.

But no matter what, having a plane in your hand is a deterrent to devils, and the Battle of Long Kang proved this.

At the same time, in the process of manufacturing and maintaining aircraft, the level of production and processing is also constantly improving, and the ability of workers and technicians has also made great progress, which are good foundations and lay a relatively solid foundation for the present and the future.

Yang Tianfeng was busy with the work of calculating and drawing, and the guard came in to report, and Ma Yuming came. Packing up the documents, Yang Tianfeng left the office and met with Ma Yuming in another room.

"Brother Yang, haha, I'm here to congratulate." When Ma Yuming saw Yang Tianfeng, it was unusually affectionate.

If there is something good at the top, it must be done at the bottom. The people in the military command are well-informed and have a keen sense of smell, Yang Tianfeng is favored by Chairman Jiang, and Ma Yuming can guess one or two from Boss Dai's instructions and tone.

"Daoxi, what's the happy event, why don't I know?" Yang Tianfeng smiled and asked Ma Yuming to sit down, and ordered someone to serve tea and water, "Is it to reward Long Kang's great victory?" ”

"This Long Kang's great victory is to be commended, but it's not what I want to tell Brother Yang today." Ma Yuming did not produce any documents or letters of appointment, which shows that he got the news in advance and came to congratulate him in advance, and perhaps had other purposes.

"Brother Ma, let's sit down." Yang Tianfeng sat down and said, "No kind of surprise can defeat me." ”

"Hahahaha." Ma Yuming laughed, the laughter stopped, unhurriedly picked up the teacup, took two sips, and then slowly said: "This is the first joy, Brother Yang will soon be appointed as the director of the newly established Luyu-Anhui Border District Government Affairs Branch, and the Suzhou Prefecture is under the jurisdiction of the Lu-Henan-Anhui Border District......

Yang Tianfeng blinked his eyes, and he didn't show too much excitement, the Henan-Anhui border area is still relatively normal, why did Shandong be added and become the Shandong-Henan-Anhui border area? What does it mean to suddenly set up a government agency in this border region?

Ma Yuming knew that Yang Tianfeng was as careful as a hair, so he was naturally confused by this Luyu-Anhui border area, and he didn't explain, and continued: "This second joy is to reward Brother Yang for contributing radar information, and the government will reward 50,000 yuan in legal currency. ”

"Radar developed?" Yang Tianfeng was a little moved this time, in any case, this will be of great benefit to China's war of resistance, and can greatly reduce the losses of Japanese bombing.

"Yes, it has been manufactured in Chongqing, and it is being erected and debugged, and it will soon be used in actual combat." Ma Yuming nodded with a smile and said, "Chengdu, Kunming, and airports in various places should also install radars to deal with the bombing of Japanese aircraft." Brother Yang's contribution can save our military commanders a lot of effort and sacrifice! ”

Chongqing, Chengdu, Kunming, and airfields, which will be the key cities and places bombed by Japanese planes, make sense to install radar. As for what Ma Yuming said saved the strength of the military commander, Yang Tianfeng also knew what it was.

In the historical War of Resistance Against Japanese Aggression, China did not have radar, but it did have an early warning system. The method of comparing soil is to hang lanterns for air raid warning, that is, according to the distance of the Japanese bombers, hang different numbers in turn, and the public can judge the degree of danger after seeing it from a distance.

Why did you know in advance the distance, sorties and exact times of the Japanese bombers? That's the contribution of the military commanders.

After the 53.54 tragedy in Chongqing's Duyou Street, Chairman Chiang strictly ordered Dai Li to find out the details of the activation of the Japanese aircraft in advance, so as to set up an early warning mechanism to protect the safety of the innocent people in the capital.

The military commanders used a lot of manpower and material resources for this purpose, and they usually rented houses near every airfield of the Japanese army, disguised themselves as ordinary people to observe the direction of the bombers' take-off and landing, sorties, and times, and even sneaked into the vicinity of the planes to visually measure the amount of bombs, and then quickly informed the Chongqing headquarters by radio, so that the air defense departments of the capital could hang up the ball as soon as possible.

Naturally, the Japanese will gradually become aware of this, so they frequently stage a life-and-death struggle between detection and counter-detection, and many military commanders have been martyred and sacrificed for it.

"Mr. Shu Xingbei Shu is really a physics genius, amazing, amazing!" Even Yang Tianfeng, who provided information, had to admire the outstanding talent of this "father of China's radar", and he also had to admit the energy and efficiency of the power of the country.

"That's right, Mr. Shu has contributed a lot, but Brother Yang's credit is the greatest." Ma Yuming extended a thumbs up to Yang Tianfeng.

Yang Tianfeng waved his hand humbly and said tentatively: "If possible, can you make a radar for the Yongcheng base area?" 50,000 fiat currency, I don't know if it's enough? ”

"Haha, Brother Yang is really good at calculating!" Ma Yuming laughed again and said, "Boss Dai had already guessed that Brother Yang would have this intention, and it has been arranged, and Brother Yang's bonus of 50,000 yuan is still kept for himself." But—"

Nothing to be courteous, either a traitor or a thief. Yang Tianfeng immediately raised his vigilance, but there was a smile on his face, looking at Ma Yuming, waiting for him to finish speaking.

Ma Yuming sighed softly and said, "In Shanghai, the agent war is becoming more and more brutal and intense. Punishing traitors and killing the Japanese will be the main course of action of the military command. Therefore, there is a need for more snipers with accurate marksmanship, like Xu Ping, who was trained by Brother Yang. ”

Permission apple! Yang Tianfeng nodded lightly, and he still had a deep impression of the woman who had suffered and was full of murderous intent. But in the end, she was a military commander, and it had been a few months since she was transferred, and it turned out that she was going to Shanghai to carry out an assassination mission.

In the Japanese-occupied areas, the campaign to kill criminals and eliminate traitors began as early as 1938. Tang Shaoyi was hacked to death with an axe by a military commander agent disguised as an antique dealer in the concession apartment; Chen Zheng, the "foreign minister" of the puppet government of Nanjing, was assassinated; Ji Yunqing, the leader of the Qing Gang, was killed by the military commander at the door of Weihai Road because of his collusion with Wang Puppet; Mu Shiying, president of the National News Agency, was also killed by the military commander for defecting to the enemy.

The series of rape activities carried out by the military commanders greatly boosted the hearts of the people of Shanghai, and Wang was a puppet traitor who put himself in danger, and effectively deterred a group of people who wanted to attach themselves to the enemy. The pro-Chongqing newspapers played up each of these events, with editorials comparing the military commanders to the modern-day heroes who acted for the heavens.

In addition to continuing to coerce and lure the military commanders, the Japanese army and Wang's puppet agent headquarters intensified their bloody terrorist activities, and gun battles between the two sides broke out in an all-round way and continued to escalate; according to statistics, in 1939, in various sniper cases that occurred in the Shanghai Concession, the number of casualties on both sides reached as high as 40.

"She's okay in Shanghai?" Yang Tianfeng naturally expressed his concern.

"She's doing a pretty good job in Shanghai." Ma Yuming sat back and said with a slight meaning: "A shot is fatal, and the bullet is not missing." Coupled with the silencer provided by Brother Yang, the traitors and devils who were killed didn't even know how they died. Also, you don't have to get close, and it's easy to escape. ”

Yes, long-range sniping, as a means of assassination, is indeed very advanced and unguardable. After all, even if there is guard protection, the warning range is only a few tens of meters.

Yang Tianfeng knew that Ma Yuming wanted to borrow a sniper from him, but he was a little reluctant, those elites had spent a lot of effort to cultivate.

Seeing that Yang Tianfeng was a little hesitant and hesitant, Ma Yuming smiled wryly and said, "Brother Yang is afraid that he is reluctant, right?" As for me, I don't borrow much, three or five will be enough. In the past, it was my mistake that I didn't select players from the Einsatzgruppen to send to Brother Yang for training, and I immediately remedied it. When the training is complete, I will return Brother Yang's men. Moreover, there will definitely be a good reward. ”

Yang Tianfeng knew that Dai Li wanted to make a name for himself, while Ma Yuming wanted to make contributions and perform well in front of Boss Dai. Moreover, he still has very important matters to send to Shanghai to handle, and he just takes this opportunity to deal with them together.

"Three." Yang Tianfeng stretched out his finger and had a very painful expression, "The personnel of the Einsatzgruppen must be carefully selected, and they must be in place immediately, and after three months of emergency training, I promise to train a few elites for Brother Ma." ”

"Thank you, Brother Yang." Ma Yuming arched his hand and expressed his gratitude.

"The personnel sent to Shanghai should not belong to the Shanghai District of the Military Command, and it is better to form a separate group and contact with each other through a single line." Yang Tianfeng knew that there were a lot of defections in the history of the military commanders, almost dealing a fatal blow to the military commanders in the occupied areas, and in order to ensure the safety of the personnel he sent as much as possible, he had to make a tactful suggestion, "In addition, I will send two people to Shanghai to help Qiulan find her family." ”

"Sister-in-law's relatives? Yes, yes! Ma Yuming nodded again and again, "Send them to Shanghai, leave this matter to me, and ensure safety." Well, do you want to use the power of the military commander-"

"Don't make it known." Yang Tianfeng shook his head and said, "It's better to find it, and it doesn't matter if you can't find it." To be honest, I don't like her family very much, and I am willing to sell my own flesh and blood, this character is ......"

It's normal for poor families to sell their sons and daughters, but if they stay together, they will starve to death? Ma Yuming had such thoughts in his heart, but he didn't contradict Yang Tianfeng, and nodded again and again, looking like he was deeply approving.

After sending Ma Yuming away, Yang Tianfeng returned to the office, and after a long thought, he guessed the meaning behind the new appointment.

Yang Tianfeng was mentally prepared to take the government affairs of the Henan-Anhui border region into his hands, and he did a lot of work and made a lot of guarantees and promises. Sun Tongxuan strongly supported it, and Wei Lihuang, who is also the chairman of Henan Province, is said to have agreed, and submitted a report to the national government. Why did it finally become the Luyu-Anhui border area, Yang Tianfeng finally had his own conjecture.

This is most likely an expression of Chairman Chiang's attitude that he hopes that the New Seventh Army will wait for an opportunity to enter Shandong, and even designate North China in the future. As for why it is developing northward, of course, it is fighting for territory with the Eighth Route Army!

After figuring out this section, Yang Tianfeng couldn't help frowning, which was exactly the opposite of what he expected, and it was really embarrassing. After much deliberation, Yang Tianfeng decided to go with the flow and not to advance northward for the time being, but to first straighten out the work of government affairs, strengthen the construction of the military industry, develop the civilian economy and agricultural planting, and turn the Henan-Anhui border region into a larger and more solid foundation for the development of the new Seventh Army.

…………… (To be continued.) )