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Chapter 479 Full coverage cruise

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    "Don't talk nonsense. If you want to be wild, go home to your mother-in-law at night. It's already close to the maximum power. Just hold it steady."

    As soon as the pilot finished speaking, Song Changzheng responded unceremoniously. Although Qian Qiang was used to watching the test flight, he still had the urge to cover his face and pretend not to recognize this veteran.

    Song Changzheng, a naval technical expert and deputy director of the Aviation Equipment and Technology Research Institute of the Chinese People's Liberation Army, was usually approachable and always smiling. When he joined the army, he seemed like a different person. He took off his mask of gentlemen and took up the mountain with him.  Like a thieves, as long as it's not a formal occasion, it's normal for me to be the boss and the boss to be the boss.

    ???????????? All kinds of mouth-breathing, dirty jokes, coupled with a loud and loud voice, that is the real daily life of Lao Song.

    So every time Qian Qiang saw Song Changzheng rushing into a crowd of officers and soldiers, holding a big tea vat filled with liquor, scolding and noisily having fun with his subordinates, he would think, this guy is just such a guy.  How did you graduate from Harbin Military Industry?

    "I can really mention it. I think the engine still has enough power. Unlike the Soviet ai-24t, although it has a maximum horsepower of 2820, it only makes a blast when taking off with full fuel and load.  When flying, the power decreases greatly when it reaches 2,500 horsepower, and it can¡¯t be used at all.¡±

    Qian Qiang was still thinking wildly when the pilot's words came through the radio again. Song Changzheng frowned and thought about it, but did not dare to make a decision because the manual of the D-46ml turboprop engine provided by Tengfei Aviation Power clearly stated  The maximum power marked is 2051 kilowatts, which is 2788 horsepower.

    From the specific data, it is not as good as the original Soviet ai-24t turboprop engine on the An-26, because the power of the Soviet product is 2074 kilowatts, equivalent to 2820 horsepower.

    It seems to be slightly better than the D-46ml turboprop engine.

    But in fact, it is not easy for the ai-24t turboprop engine to achieve maximum power, unless you risk the reduction of engine life and fuel consumption regardless of cost, but even so, the maximum power of the ai-24t turboprop engine can only be maintained for a few minutes.  , because over time, the oil carried on the aircraft is not enough, which can easily cause the bearings in the engine to fall off due to friction, causing it to stop in the air.

    Therefore, unless it is full of fuel and fully loaded, in order to accelerate take-off, the pilot will increase the throttle and hit the maximum power of the ai-24t turboprop engine to assist take-off. Under normal circumstances, the take-off power of the An-26 is around 2,500 horsepower.

    So the D-46ml turboprop engine is actually a step ahead of the original Soviet ai-24t turboprop engine.

    Because the D-46ml turboprop engine is said to have 2788 horsepower, it is 2788 horsepower, and there will be no discount at all. Therefore, from the perspective of the stability of the power output, the D-46ml turboprop engine fully meets the general requirements of the An-26.  need.

    As for full fuel and full load, although the maximum horsepower output is not as large as that of the ai-24t turboprop engine, the weight of a single d-46ml is only 500 kilograms, which is 100 kilograms lower than the 600 kilograms of the ai-24t, and the internal  The lubricating oil, oil pipeline rate, and de-icing system have all been optimized. Coupled with a six-blade variable-pitch composite propeller, the overall structure is more compact and lighter than the ai-24t, and the actual efficiency is higher.

    Because of this, although it is slightly inferior in terms of maximum power, it is not noticeable at all in practical applications. On the contrary, it feels that it is much better than the past ai-24t in some aspects.

    Because the power output of the d-46ml is more stable and smooth, especially the new six-blade variable pitch propeller made of composite materials, it can be said that the lift of the An-26 is improved immediately, so even if the An-26 is full after the engine change,  It takes off with a full load of fuel, d-46ml without any trouble, and even has some power left.

    The pilots who have done the test flight in the sky can see this better than anyone else. It is already 2612 horsepower, but the engine is in very good condition. In this case, the pilot is like a racing driver driving a sports car, and he really wants to experience the strong thrust.  Back feeling.

    "However, the pilot wanted to have fun, but Song Changzheng was very cautious. Don't look at him being careless with the officers and soldiers below, like a thieves. It was just a small way to get along with the officers and soldiers.

    In fact, Song Changzheng was very clear-headed. Otherwise, how could he have become a member of the Kazakh military industry, and how could he have gradually become an equipment expert for the naval aviation. Therefore, he was still a little reluctant to pilots who wanted to try high-horsepower cruising.  .

    After all, the An-26 after the engine replacement showed very excellent performance during the test flight during this period. Thanks to Tengfei Aviation Power¡¯s technological exploration in fuel saving, the fuel consumption rate of d-46ml reached 0.294 kilograms per hour.  Compared with the original Soviet ai-24t, the fuel consumption rate is reduced by 35%.

    Coupled with a more efficient six-blade composite variable-pitch propeller, fuel economy is further improved.High, the overall fuel consumption rate is reduced by 46.27% compared with before the replacement.

    In other words, even though the overall structure of the An-26 is inconvenient, just by replacing the engine, the maximum range has increased by 46.27%, from the original 2,500 kilometers to the current 3,656 kilometers. If additional fuel tanks are added inside the fuselage,  The range can be further increased to 4,000 kilometers.

    Today, the South China Sea, the most vast sea area, is only two thousand kilometers in length from north to south. The An-26, which has a range of four thousand kilometers, can completely cover the South China Sea from south to north.

    This is too important and precious enough for the navy, which lacks air support.

    Because the only aircraft types that the Navy has that can carry out such long-distance flights are the Y-8 maritime patrol aircraft and the H-6D bombers. The problem is that not only are the two types of aircraft in small numbers, but they also have to frequently switch defenses back and forth between the three fleets, making it impossible to  Not to mention being stationed in one direction for a long time, the cost of use is extremely high.

    It is precisely the limitations of the Y-8 maritime patrol aircraft and H-6D bombers that highlight the value of the An-26 equipped with D-46ml.

    Because of this, when the Navy Headquarters learned about the test flight situation of the An-26 after the engine replacement, it immediately asked Song Changzheng to complete the test flight work with quality and quantity, and strive to formally equip the troops before the end of the year and carry out adaptive training.

    Others don't know the urgent mood of the Navy Headquarters. How could Song Changzheng, the leader who focuses on test flights, not know it? But because of this, he can't be as blind as others. If something goes wrong and affects the headquarters' planning, it will be a big sin.  That's big.

    So I frowned and thought for a long time, but still couldn't make up my mind. Finally, I turned my head to look at Qian Qiang and asked, "How long can your D-46ml last at maximum power?"

    "At least 1,800 hours." Qian Qiang answered without hesitation.

    Song Changzheng was stunned for a moment, then grinned, then picked up the intercom and said: "Keep a good posture, control the direction, you can be appropriately brutal, but don't go too far."

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