343: C343 Dong Chen Airlines(last Part)

C343 Dong Chen Airlines(last Part)

The pilots who have been flying for years are actually very sensitive to the cost control of civil aviation. Especially during the rapid development period after the reformation of civil aviation in China, the veteran pilot who had been flying for more than ten or twenty years was very sensitive to the cost of civil aviation. Until now, the entire process had been personally experienced. Civil aviation had developed to this day. China's Civil Aviation industry had made huge progress. There were more airports, more airlines, more flights, and more airplanes. And the cost of the aviation company was also getting higher and higher.

Take Capital Airport as an example. If the airlines ordered a plane to launch a terminal, then the plane would enter the queue for takeoff. From this moment on, the engine of the plane must always be in operation, but during the busy period, some flights can't even take off for an hour, every minute delayed... The airlines had to bear a huge cost of fuel consumption.

It was the same for landing. If the delay was more than 20 minutes, the cost of fuel consumption would be increased by 10,000 yuan. The high cost caused the cost of civil aviation to be much higher than the railway and roads. Just the fuel tax and airport construction fees would shut out a large number of potential users of civil aviation. Trapped by the cost, civil aviation competition was unable to increase in quality.

However, the comprehensive performance of the DC11 was enough to reduce the cost of aviation by a large amount. If the aviation company used Dong Chen's aviation engine, the entire civil aviation industry would experience a rapid growth.

The crew members were extremely excited about the performance of this new engine. After 48 hours of continuous operation, there were no abnormalities during the entire process of the engine, which also proved that this engine had reliable and powerful sustainable flying ability. As a result, the utilization rate of the aircraft was higher.

After 48 hours of continuous flight without stopping, Zhang Yunfeng gathered all the crew members. International Civil Aviation's rules were the log-off test of the new engine, in addition to the strength test, swallowing test, and inclusive test. He also had to wait for 3,000 hours before he could approve the installation test. This process was too cumbersome for Zhang Yunfeng. And Little Two knew all the parameters of this engine like the back of his hand. It could be done in a few minutes. All the parameters had been simulated for more than ten thousand hours, and the result of the simulation... It was infinitely close to a practical experiment, so Zhang Yunfeng prepared to play according to his own routine. In other words, he skipped the application for the flight permit and directly installed it for the test.

Although this was a violation of the rules, the rules were set by people. Zhang Yunfeng used Future Technology and the extremely precise supercomputer, Waiter, to combine the performance and endurance of any parts of the engine. He had a deep understanding of everything, so he decided to hang the engine on the plane first. He directly went into the ground to hang it for testing.

Since he wanted to hang it on the plane for the ground test, he had to go through the agreement of the crew members. Therefore, Zhang Yunfeng gathered the crew members to discuss whether they were willing to enter the hang test ahead of time.

The crew members had some concerns, but these concerns were only an instinctive response to the current rules. At the beginning, everyone felt that there was some risk in this unconventional way of playing cards. However, everyone understood that this engine... Judging from the current performance, it was definitely a brand new engine with a groundbreaking significance. Therefore, the current rules were certainly not suitable for this engine.

After some discussion, the crew agreed to hang the engine first. However, the attitude of the crew members was that there was no problem with the hanging test. However, the test flight could not be too rushed. They needed to familiarize themselves with the ground performance of the engine first. Then, they would decide when they would really test the flight.

Zhang Yunfeng did not have any objections. The engine had been offline for more than ten days. He had also gone through all the tests except for the time limit. If he delayed any further... If this engine really went up, it would have to wait for at least the second half of the year. After the crew members familiarized themselves with it and felt relieved, he hung the engine first. Then we will talk about the test flight.

The four engines that had passed the test in the laboratory were transported to the test flight airport in the outskirts of Zhonghai. This test flight airport had a 4F runway that was beyond standard design. Not only did Shang Fei use it himself, but it was also a large military transport. It had also been used many times to accelerate, slow, and landing tests, as well as side wind tests.

This runway's standard was very high, reaching 4200 meters in length. Its width also reached an astonishing 70 meters, even the largest airplane in the world. The former Northern Crocodile Country's An 225 super-large transport plane had also completed its landing here.

For the 737 and 320 small-sized dry line passenger planes, the takeoff distance required was around 2200,2500 meters. On this runway, the 737 and 320 planes could completely accelerate to the takeoff speed without taking off. The remaining distance was also completely enough for the plane to take off and stop at the brake distance. It was a perfect place to test the ground.

The crew members and Dong Chen's technician were stationed at the test flight airport. The technician team took two days. They dismantled the engines of the two planes Dong Chen bought from the South China Airlines and installed Dong Chen's DC11 engine. After the crew rested for two days and hung up, they immediately entered the process of further testing the DC11.

The first thing to be tested was that these four new engines were on the plane. The degree of coordination with the airplane's control system, the reaction speed of the engine starting and stopping, the reaction speed and sensitivity of the accelerator, etc., were tested under a static state.

Although the DC11 was a brand new engine, in terms of compatibility, it was the same as all the engines on the market. It could be perfectly hung on the entire series of 737 and 320 engines.

After the two planes finished changing their engines, the crew boarded their respective planes. The test chief engineer directed the two aircraft engines to start at the same time. The reaction speed of the engine turbine was very fast. The turbine accelerated very quickly and produced a roaring sound. Immediately, the two groups of crew members began to increase the fuel supply of the engines. The engine was quickly operating at full speed, and then it immediately retracted its fuel supply. Furthermore, when the engine was lowered to a low speed, the engine would be turned off.

The whole process was very smooth, and the engine was very sensitive to the control of the crew members. Furthermore, the whole process was very smooth, and the engine was very sensitive to the control of the crew members. Due to the advanced design concept and the strength of the materials, DC11 was easier to enter the maximum thrust state in a short period of time than ordinary engines. This point, in practical application, could reduce the distance of the plane taking off.

Igniting, increasing the fuel supply, reducing the fuel supply, and extinguishing the engine, the entire process was repeated more than 60 times by the crew within a day. The four engines had always maintained an extremely sensitive response state, and there were no accidents.

The next day, the crew got up at 5: 30 a.m. until 10: 00 p.m., and the test process of the previous day had been repeated 90 times, but there were still no abnormalities.

The third day, 90 times. Everything was normal.

Such a perfect and accurate response had increased the confidence of the crew in the DC11 by a lot. During the 200 continuous stops of normal engines, it was inevitable that the engine would fail once or twice, or the reaction speed would be slower. However, on the DC11, the result of every repeated test... It was perfect.

The three days of test made Dong Chen's technician and crew extremely excited. The staff and leaders of the commercial flight airport were also very interested in Dong Chen's test. As the production line used by Dong Chen was given to Dong Chen by Shang Fei. Therefore, these people treated the DC11 as half of Shang Fei's product. They had been paying attention to Dong Chen's test of the engine.

On the fourth day, the crew members were tired of repeating the test, but there was nothing unusual about the test. They took the initiative to stop the test for the first five days and enter the next dynamic test.

The so-called dynamic test was to completely remove the brake system and the ground fixation device. Then, the plane could be pushed forward at a low speed on the ground, and if the plane did not rely on a tractor to walk on the runway of the airport, it required an independent acceleration, deceleration, and turning motion, and so on and so forth. And the plane was in many states... For example, it would need to line up to take off, turn to enter the runway, turn to leave the track area after landing, and so on and so forth. At this time, what they needed the most was the precise response of the engines on both sides to the accelerator.

If the aircraft completed the turn on the ground, it would mainly depend on the difference in thrust between the engines on both sides. And... the rotation of the front wheel steering wheel, so, once the plane was to change direction... It would immediately change the thrust balance of the engines on both sides and increase the pushing force on one side. Or it would lower the pushing force on the other side, or the two sides would simultaneously complete the lift and fall of their respective pushing forces. At this time, the sensitivity of the engine was extremely important.

In fact, all active engines could meet the requirement of sensitivity. DC11 was the most advanced super-passenger plane in the entire episode, let alone this kind of test. It was just a routine test. If this test passed... Then the next step would be the final acceleration test before the test flight.

The DC11 carried out more than two hundred initiation and suspension tests under the delicate test state, and each test was... The DC11's performance was very perfect. Therefore, in the dynamic test, all the tests were easily passed. The whole process was very boring, which was to let the crew pilot the plane. They drove out of the parking position, entered the communication paddy, and then turned to enter the starting point of the runway. Stop at the starting end of the runway, then turn back the way they came. The engine was in a low-speed state. It gave people the feeling that it was powerful but unable to be used.

After two days of dynamic testing, the plane had already completed all kinds of well-designed trajectories. This orbital design was equivalent to the various internal test projects in the driving school. Even the performance of Pousan could be easily completed. For the DC11, there were no more challenges.

In fact, the DC11 had performed very well in all the tests. It was the best product in all the years!0

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