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Volume 1 Chapter 248 Incredible

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    The engine idled for more than a minute. Seeing that Peng Huading had no objection, the commander-in-chief ordered the engine to speed up.  / As he issued the order, the engine rumbled. Although Peng Huading and the others were sitting in the data monitoring room, they still felt the vibration of the earth and the dull sound.  Not only the picture transmitted through the camera, but also the live scene seen through the bulletproof glass, the high-speed rotation of the engine completely fell in the eyes of these experts.  I saw the nozzle at the rear of the engine spitting out orange-red flames, and then slowly turned blue.  Peng Huading took a look at the speed data and saw that the display showed that the speed was 65%, 68%, 70% of the rated speed As the speed continued to increase, the thrust of the engine  The value is also increasing rapidly. When the rotational speed reaches 80, the thrust value displayed on the display has exceeded 120,000 N!  Several experts standing behind Peng Huading looked at each other in confusion. You looked at me and I looked at you with doubts in their eyes: Is this data true?  This exceeds the maximum value of the American F119 engine, let alone compared with our own country's Taihang engine.  You must know that the engine speed is only 80% at this time.  If it reaches 100%, that would be such a shocking figure.  In fact, this number is already in the data held by experts, but these data are data, and experts simply do not believe it. Even if the facts are in front of them, they still have doubts.  At this time, the engine is further refueling, further increasing the speed: eighty-five percent, eighty-eight percent, ninety-one percent and the thrust is increasing accordingly: one hundred and twenty-five thousand newtons,  One hundred and thirty thousand oxen, one hundred and thirty-five thousand years!  When the engine speed reaches 100% of the rated speed, the thrust of the engine reaches 154,000 N!  The engine ran at this speed for a full twenty minutes.  The thrust of the engine remains at 154,000 N.  Several experts were inexplicably surprised. They finally accepted the reality: the engine manufactured under the guidance of Peng Huading was indeed a cow, which changed the backwardness of our country's engines in one fell swoop.  After running stably for twenty minutes, Peng Huading personally came down to overspeed the engine.  As the fuel delivery volume increases, the roar of the engine becomes louder, and the corresponding blower rotates faster, blowing more air into the engine air inlet to better simulate the faster speed of the aircraft in the air.  The engine's speed keeps rising on the display: one hundred and five percent, one hundred and ten percent, one hundred and fifteen percent and the engine's thrust also increases: one hundred and sixty percent.  KN, 168 KN, 175 KN Until the engine speed exceeded 30%, all the experts began to turn pale and were worried about whether there would be problems with the engine.  when.  Peng Huading stopped increasing the input of aviation kerosene.  The thrust of the engine is also stable at 208,000 N.  Peng Huading listened carefully to the sound of the engine. After listening for a long time without hearing any noise, he nodded and said, "Yes! Our test was successful!" "Successful?" Deng Guohong asked in surprise.  Others looked at Peng Huading in confusion.  Deng Guohong and others are not questioning Peng Huading.  It's not that the engine data is false.  It's because of following the test outline.  The engine must run stably for more than three hours.  Now it has been slowly increasing the speed, and it has only been stable for 20 minutes when the rated speed is 100%. How can it be said that it is successful?  In case the engine's turbofan blade disc is deformed due to high temperature after running for an hour.  If the performance deteriorates due to high temperature, then the test is a failure rather than a success, and it only provides experience for future improvements.  The reason why two units were used for this test run was not to verify their similarity, but to prevent one unit from breaking down due to high temperature and connecting the other unit to continue testing.  The purpose is to save Peng Huading's time. His time is too precious to let him stay here for a few days and nights just because of an engine test. There are still many new equipment and new products that require his guidance.  The performance degradation of aeroengines under high temperature is a common phenomenon in our country's engines. It not only limits the engine's over-rated speed operation, but also greatly shortens the service life of the engine. In many cases, the engine is replaced before the service life has expired.  To avoid accidents involving damage and loss of life.  They have no idea that Peng Huading has rich mechanical and electrical knowledge and experience. He can know the engine running at ultra-high speed by the noise he hears with his ears. He has overcome the obstacle of high temperature and can operate in this harsh environment for a long time.  Peng Huading smiled and said to the people around him: "It's okay! This engine is completely??It can work at 130% of the rated speed for a long time.  In fact, this rated speed is your design data, which you calculated based on the technical principles of American and Russian aero engines. You did not take into account our improvements. If you take the characteristics of our design into account and then calculate, the rated speed will be  It should be the current speed, which is one hundred and thirty percent of the original rated speed.  " "Ah -" an expert immediately caught the meaning of Peng Huading's words and asked hurriedly, "You mean our engine can also increase the speed?  How much can that improve?  Can its thrust be improved?  " After hearing what he said, everyone, including Deng Guohong and several generals who were not technical experts, looked at Peng Huading eagerly. Obviously they hoped that the expert's question would be answered in the affirmative by Peng Huading. Peng Huading was happy and said with a smile: "  You, you, you are so quick to hold on to the words in my words. Fortunately, the country will not let you go, otherwise you must be a good lawyer if you want to be a lawyer.  "Having said this, he nodded, "If you set the rated speed to the current speed, then it can naturally operate beyond the rated speed.  " Peng Huading, who was about to stand up and leave here, sat down again, pointed at the data on the display screen and said: "If my ears heard correctly, we can also increase the engine speed by 20%, and the thrust should be increased.  Fifteen percent, reaching about 24,000 cattle.  " After hearing what he said, the others were not surprised at all. They were only eager to try and increase the speed by another 20% to see if the thrust he mentioned could be increased to 24,000 N.  These data may seem inconspicuous to ordinary people, and a little increase or decrease may not seem to matter. However, in the eyes of aviation experts, these data are too precious. They know deeply what it means to increase the thrust of an engine by one thousand Newtons.  Not only does it mean that the aircraft can fly faster and higher, it also means that the safety of the aircraft is greatly increased. The aircraft can shoot down the enemy and protect itself in battle. Moreover, the thrust of the aircraft is large, so the aircraft can be larger and can load  More instruments and equipment can greatly improve the performance of the aircraft, and can also greatly increase the aircraft's bomb load, increase the aircraft's fuel load, increase the intensity of attacking the enemy, increase the aircraft's airborne time, and improve the pilot's comfort.  It can even increase the size and weight of the aircraft's frame and increase its stability. Seeing the green light in the eyes of the experts, Peng Huading smiled again. After drinking a cup of tea, he directly operated the console.  The engine speed suddenly increased by 20%, with almost no pause in the process. The roar of the engine was no longer louder as it was at the beginning, and the flame at the tail nozzle turned from light blue to cyan. The tested thrust was indeed true.  As Peng Huading said, it reached 242,000 Newtons, which was only one thousand Newtons different from the number he said. After the sound and vibration of the engine stabilized, Peng Huading stood up and said to the commander-in-chief: "Right away.  Inform the fuel supply department to increase fuel and let the engine run at high speed for a long time. Every three hours of operation, reduce it from the maximum speed to idle speed, and then increase it from idle speed to the maximum speed. You don't need to pay too much attention to the speed of acceleration and deceleration. You can drop it suddenly.  It can also rise suddenly.  "The commander-in-chief glanced at the others, but then immediately raised his hands and saluted: "Yes!  " Peng Huading then ordered: "After three days and three nights of continuous operation, you can reduce the following speed of the blower by 30% to simulate the operation of the aircraft in an environment of thin air at high altitudes.  Other conditions remain unchanged, and the cycle continues to be three hours, and the time is twenty-four hours.  "The commander-in-chief asked in disbelief: "Reduced by 30%?  Can it still operate after dropping so much?  , should the top speed be lowered?  Peng Huading asked back: "Did I ask you to consider the engine speed just now?"  "The commander-in-chief's face turned red, then he suddenly touched his feet and said loudly: "Yes!  Complete the task resolutely.  ¡± Everyone can see the excitement on his face. This excitement is not that he was criticized by Peng Huading, but that he is proud to be able to test such an excellent engine with his own hands. It can be said that although the test is not over yet, my country¡¯s aviation engine The history of our country has been rewritten. And he is also a participant in the rewriting of history. The history of our country admiring the American and Russian engines is gone forever. From now on, only they will look up to us with envy and hatred. Come on! The commander-in-chief was alone, and even the commander-in-chief was not the most excited one. Peng Huading just left accompanied by Deng Guohong. None of the other experts and generals were willing to leave. They all looked at the engine running outside the fiberglass wall like a peerless beauty. If it weren't for the loud noise of the engine, if it weren't for the fact that there were soldiers with live ammunition forming a blockadeThe experts are not allowed to risk going to the line. They really want to take a closer look and see why the engine they personally participated in the design and manufacture has such good performance.  (To be continued, please search Piaotian Literature. The novels will be better and updated faster!
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