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As the chairman's son, Xiao Cao not only has to study industrial construction and industrial planning in the State Planning Commission, but also consciously pays attention to agricultural development.
"Minister Tang, are you going to develop the fluoride generator and diffusion membrane by yourself when the Soviet Union does not provide assistance?" Xiao Cao asked.
Tang Hua: "We must be prepared for such a situation."
"What if the Soviet Union agrees to assist us in building an atomic bomb later?"
"It doesn't matter, the Bureau of Chemical Industry and the Bureau of Heavy Machinery will continue to promote the research of these two things," Tang Hua said, "If there is a change, you can use the real objects or drawings given by the Soviet Union to study, and skip a few steps in the middle , but eventually the ability to research and update must be formed.”
……
Now that Xiao Cao has arrived in Shanghai, the next step is to start.
From Shanghai Railway to Wuhan, from Wuhan to Chongqing by boat.
The waterway from Wuhan to Chongqing is a test of patience, and the fastest ship in this era will take three days and four nights.
"In 1904, the Qing government planned to build the Sichuan-Han Railway, because the problem of raising funds for this road also triggered the road protection movement," Xiao Cao said, "However, after the fall of the Qing Dynasty and decades of the Republic of China, the Sichuan-Han Railway only shoveled the turf. .Our traffic construction has been accelerated."
Tang Hua: "The Qing Dynasty underestimated the difficulty of the Sichuan-Han Railway in 1904. In other words, the rulers of the Qing Dynasty did not realize what the Sichuan-Han Railway meant. From 1913 to 1915, Zhan Tianyou actually carried out engineering surveys, and he gave From the planning map, we can see how big a project the Sichuan-Hanzhou Railway is.”
In January 1904, Xi Liang, governor of Sichuan, approved the establishment of the "government-run Sichuan-Han Railway Company" and began to engage in private fund-raising.It now appears that setting up this company to raise funds for road construction is a bit like some 1st century fund-raising scams.
In September 1913, the second revolution failed, and Sun Yat-sen fled overseas. It can be regarded as a more reliable professional to design the Sichuan-Han Railway.From September 9 to 1913, Zhan Tianyou served as the railway supervisor of the Beiyang government. He found that Wanxian had to be bypassed, and the Zigui section of Yichang had to be rerouted. The big bend, and the slope is as high as 9%, which is almost the limit of the railway line.In some places, Zhan Tianyou even had to use the zigzag line he invented when he was building the Beijing-Zhangjiakou Railway to slow down the slope.
The route design diagram given by Zhan Tianyou can be said to be "full of awe of nature".
Zhan Tianyou was not satisfied with the route of the first survey, and he wanted to conduct a second re-survey, but Zhan Tianyou died of illness in 1919, and then there was no more.
In the original planned line of the Sichuan-Han Railway, the Sichuan-Chongqing Railway from Chengdu to Chongqing was opened to traffic in 1953. Half of this section is on the Chengdu Plain, so it is not difficult.
The Yiwan Railway from Chongqing to Yichang, and the Hanyi Railway from Yichang to Wuhan were not completed until the second decade of the 21st century. This was because of the advancement of a lunatic Liu Zhijun.
After listening to Tang Hua's explanation, Xiao Cao was also a little melancholy: "The Yangtze River waterway is a slow cargo transportation route. If you need faster freight or personnel transportation, you still need a railway."
"This railway is equivalent to opening up the Three Gorges," Tang Hua said. "The terrain is difficult and the geology is complex. Not only are there many mountains, but there are also lava landforms. ... Let's wait for the development of future technology, and use human brute force to solve nature's brute force .”
……
Chengdu, Qingyang District.
"Minister Tang, our main job is actually to imitate the engine. After the engine was imitated, we built an airplane by the way."
A Tu-2 is parked on the runway of Chengdu Aircraft Manufacturing Factory & Chengdu Engine Manufacturing Factory.It can be seen that the plane has been flying frequently during this period, and the tires and gangway look like they have been used for a long time.In fact, the plane had just conducted a test flight half an hour ago and landed only 5 minutes ago.
What's even more unusual is that this Tu-2 now has a three-engine engine. In addition to the two piston propellers on the left and right wings, a small jet engine hangs on the belly of the aircraft.
This is the result of the secret trade between China and the United Kingdom in early 1953, the imitation version of the Rolls-Royce Bristol "Viper" small turbojet.
"In February of this year, the integration and debugging of the Soviet-aided equipment and the British-introduced equipment were completed. We have obtained some technical information on the Olympus engine and the Viper engine, but the design of the Olympus is a bit tricky. We first tried to build the Viper. Prototype. Factory 2A, Shenfei already has the serial number of WJ-112, and we call this WJ-1.”
1954年9月，涡喷-2地面试车通过。10月，成飞把生产出来的涡喷-2焊在图-2腹部上天试飞。——其实这时候涡喷-2还没有经历地面长时试车。
But in general, the effect is not bad. The ground test vehicle measured a maximum thrust of 1.22 tons. Although the long-term test run has not been completed, the turbojet-2 can operate normally after dozens of hours of testing.There were minor problems, such as the oil circuit break at the beginning, but it was repaired later; the engine vibration problem when it was close to the maximum thrust was also solved.It's not an accident like spraying parts, small design flaws can always be overcome.
During the trial production of Turbojet-2, Tu Jida was secretly designing a jet trainer.When Tang Hua turned his head now, he could see the small plane in the hangar shed.
——Isn’t this the dual-engine JJ-1?
原来的歼教-1装1台米格-15比斯上用的涡喷的缩小版，最大推力1.65吨，现在这架飞机装2台涡喷-2，总推力2.44吨。
Blunt round streamlined head with air intake on both sides.Tang Hua looked very familiar with the tandem double cockpit. It must have been dismantled from a MiG-15 trainer.The straight wing, tail and vertical fins look more like an enlarged La-11 than a MiG-15.However, since Tu Jida dared to make such a design in terms of aerodynamic shape, he must have done wind tunnel tests in Harbin Engineering, and Chengfei now also has static test equipment.
"Nanchang Aircraft Factory is manufacturing Chujiao-5," Tang Hua said. "If your aircraft is mass-produced, it will probably be positioned as an intermediate/advanced trainer aircraft."
Tu Jida: "I didn't think so far. Now I'm just trying to mobilize the design team of Chengfei. It doesn't matter whether the performance of the designed aircraft is good or not. It will be much smoother to do further work after having design experience."
Tang Hua: "This idea is right.... As long as this aircraft can fly and land smoothly, it means that the design team has passed the first level. And it is very good. If you succeed in this test flight, this is the first Chinese-made aircraft. A jet plane took to the sky."
The twin-engine version of the JJ-1 was pulled out of the hangar by the tractor and put in place on the runway.More than a dozen ground crews were busy surrounding the JJ-1. After the pilot got on the plane, he tested the control functions one by one. After each test, the ground staff gave feedback on whether the pilot was normal.This has actually been checked in full yesterday and this morning, but it needs to be checked again before take-off.
The Chengdu Aircraft Complex—aircraft factory, engine factory, and design institute—had not been included in the construction schedule in 1952, and construction should normally start in the latter part of the Second Five-Year Plan.However, since the Sino-British secret trade has come, these equipment cannot be left to rust in the warehouse. What Tang Hua has to do is to push the boat forward and build another fighter (fighter) design and production base in the hinterland of China.
Except for a few personnel transferred from Hafei and Shenfei like Tu Jida, more than half of the current Chengfei are novices.Some are fledgling science and engineering graduates, some have just taken off their military uniforms and changed jobs, and some used to repair aircraft and tanks.Among them, Tu Jida, the chief designer, is only 27 years old this year and graduated from Shanghai Jiaotong University in 1950.
"After take-off, all operations must be stable. Acceleration should be slow, climb should be slow, and turning should be smooth." Walking to the side of the plane, Tu Jida told the test pilot for the last time, "Don't panic if you find a mechanical failure. Be sure that you have found the real cause of the failure. Then make remedies. You can return after completing the necessary flight test program."
"When the plane is turning in the air, the engine on the outer edge of the turning circle may not work properly," Tang Hua said, "If a single engine stops in the air, don't worry, even one engine will not fall. Try to restart in the air after changing to a direct flight. "
The ground crew evacuated, the engine started, two flames spewed from the tail, and the aircraft advanced on the runway, accelerated, and the tires lifted off the ground.
——I don’t know if it’s stupid or late. When Factory 112A was implementing the full MiG-17 production line in a systematic manner, this humble aircraft factory in the Chengdu Plain sent China’s first jet plane to the sky. .
But when it comes to the production complex, Shen Fei is still more complete at this time.Chengdu only has an engine production line and an aircraft manufacturing workshop, and does not have the ability to mass-produce any aircraft.
"Just now I saw the left and right air intakes of the engine, so I guess something will happen to the engine when the state of the plane changes." Tang Hua said after the plane ascended to the sky.
Tu Jida: "Is it... the boundary layer turbulence that exists on the surface of the aircraft, caused by it entering the engine?"
Tang Hua nodded, "The MiG-15, 15bis, and MiG-17 are all designed with nose air intakes, so they won't encounter this kind of problem. The JJ-1 has air intakes on both sides, and the air flows through the nose. Then to the side, the turbulent flow generated on the surface directly enters the air intake. If the airflow is always stable, at most it is a problem of uneven force on the turbine rotor of the engine, but if it is turning or doing other maneuvers, then Not necessarily."
Tu Jida: "This problem needs to be solved...the air intake can't be buried in the fuselage, it should be separated from the fuselage. However, it needs to increase the weight a little."
While the two were chatting, JJ-1 completed its first flight—that is, it flew next to the airport, made a big turn and then landed in less than 15 minutes.However, when turning, the pilot reported that he encountered a left engine shutdown, but fortunately, the restart was successful in the air.
Chapter 68, Met the unexpected
In order to catch up with Chengfei JJ-1's first flight, Tang Hua landed in Chongqing and went straight to Chengdu. After watching the first flight, he made arrangements for Chengfei's future development direction, and then returned to Chongqing to continue working.
"Xiao Cao, you have inspected the countryside in northern Jiangsu for a month, and today we will also go to the countryside."
Before Tang Hua and Xiao Cao arrived in Chongqing, the car turned to a fork in the road, drove for two or three hours, and finally got off at a mountain village between Chongqing and Luzhou.
"This place belongs to Shaba Township, about 80 kilometers away from Chongqing," a guide from the local county government told them.
The two cars drove to a place where there was no road, and then turned over a mountain. Only then did the group see a village in the mountains.
"Xiao Cao, what's the difference between here and the northern Jiangsu countryside you went to?"
"There are many mountains and little land. In addition,...the houses in the village look more dilapidated than those in northern Jiangsu."
"Northern Jiangsu is still a plain area, and the traffic is more convenient than here," Tang Hua said. "According to the statistics of the county government, this Huangjiachong had a population of 1816 last year, with 880 acres of paddy fields and 763 acres of slope dry land. The total cultivated land is 1643 acres. 9 points of land. What is the per capita arable land in those rural areas in northern Jiangsu?"
Xiao Cao: "The average per capita is 2 to 4 mu, but some arable land is lightly salinized. When we divided the land back then and when we set up cooperatives now, we try to match the ratio of farmland to farmland as much as possible."
Tang Hua: "Even with only animal power, one labor force can cultivate 10 mu of land."
"It can be relaxed a bit. As long as there are cattle, 15 acres can be busy, and the planting is fairly meticulous. Of course, there is less rain in the harvest season in the north, and the harvesting time can be longer, which is more favorable than Sichuan."