"Don't be, if you want to go home savagely at night to find your mother-in-law savagely, it's close to the maximum power, give me a little steady." ”

As soon as the pilot's words were finished, Song Changzheng unceremoniously scolded back, although Qian Qiang, who was paying attention to the test flight, was used to it, but he still had the urge to cover his face and pretend not to know this old man.

Naval technical expert, deputy director of the Aviation Aviation Equipment Technology Research Institute, Song Changzheng, who is approachable on weekdays and always laughs, is like a different person when he enters the army, tearing off the mask of the Sven people, like a ringing horse leader who occupies the top of the mountain, as long as it is not a formal occasion, Lao Tzu is long, Lao Tzu is short, it is commonplace.

All kinds of fragrant mouths, small meat jokes, and a loud and loud voice are the real daily life of Lao Song.

So much so that every time Qian Qiang saw Song Changzheng plunged into the pile of officers and soldiers, holding a large tea jar full of liquor, and scolding and arguing with his subordinates, he was thinking about how such a product graduated from the Kazakh military industry.

"I can really mention it, I think the engine is still very strong, unlike the Soviet AI-24T, although it has a maximum horsepower of 2820, but it is also a boom when taking off when full fuel and full load, and it will be attenuated to 2500 horsepower when it is level flight, and it will not work hard at all. ”

Qian Qiang was still thinking nonsense, the pilot's words came through the radio again, Song Changzheng frowned and thought about it, and didn't dare to make up his mind, because the maximum power clearly marked in the manual of the D-46ML turboprop engine provided by Tengfei Aviation Power was 2051 kilowatts, that is, 2788 horsepower.

Judging 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, which is equivalent to 2820 horsepower.

It seems to be slightly stronger than the D-46ML turboprop engine.

But in fact, it is not easy for the AI-24T turboprop engine to achieve maximum power, unless it risks the attenuation of engine life and fuel consumption regardless of the cost, but even so, the maximum power of the AI-24T turboprop engine can only be maintained for a few minutes, because for a long time, the oil carried on the aircraft is not enough, which is easy to cause the friction of the bearing in the engine to fall off, resulting in air stopping.

Therefore, unless the fuel is fully loaded, in order to accelerate the take-off, the pilot will increase the throttle to blast on the maximum power of the AI-24T turboprop engine to help take off, and the take-off power of the An-26 is about 2500 horsepower under normal circumstances.

In this way, the D-46ML turboprop engine is even higher than the original Soviet AI-24T turboprop engine.

Because the D-46ML turboprop engine is said to be 2788 horsepower, that is, 2788 horsepower, the slightest discount will not be played, so from the perspective of the stability of power output, the D-46ML turboprop engine fully meets the general conventional needs of An-26.

As for the full fuel and full load, although the maximum horsepower output is not as large as the AI-24T turboprop engine, the D-46ML single weight is only 500 kilograms, which is 100 kilograms lower than the 600 kilograms of the AI-24T, and the internal lubricating oil, oil pipeline rate, and de-icing system have been optimized in a series of ways, plus a six-blade variable-pitch composite propeller, the overall structure is more compact than the AI-24T, lighter, and the actual efficiency is higher.

Because of this, although it is slightly inferior in terms of maximum power, it is not noticeable in practical application at all, but it feels that it is much better than the previous AI-24T in some aspects.

Because the power output of D-46ML is more stable and smoother, especially the new six-blade variable pitch propeller made of composite materials, the improvement of the lift of An-26 can be said to be immediate, so even if the An-26 takes off with full fuel and load after the change, D-46ML is not struggling, and even has spare strength.

In this regard, the pilot of the test flight in the sky can see 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, very much want to experience the strong feeling of pushing back.

However, the pilot wanted to be refreshed, but Song Changzheng was very cautious, don't look at him and the officers and soldiers below him are very arrogant, like a ringing horse leader, it is just a small means to mingle with the officers and soldiers.

In fact, Song Changzheng's head is very sober, otherwise, how could he become a member of the Kazakh military industry, and how could he become an equipment expert of the naval aviation step by step, so he is still a little resistant to the pilot's desire to try high-horsepower cruise.

After all, the An-26 showed excellent performance in the test flight during this time, thanks to the technical exploration of Tengfei Aviation Power in fuel saving, the fuel consumption rate of D-46ML reached 0.294 kg \ kWh, which was 35% lower than that of the original AI-24T in the Soviet Union.

Coupled with the more efficient six-bladed composite variable pitch propeller, fuel economy has been further improved, and the overall fuel consumption rate has been reduced by 46.27% compared to before the retrofit.

That is to say, in the case of the inconvenience of the overall structure, the maximum range of the An-26 has increased by 46.27% by replacing the engine alone, from the original 2,500 kilometers to the current 3,656 kilometers, and if additional fuel tanks are added inside the fuselage, the range can be further increased to 4,000 kilometers.

At present, the length of the South China Sea, which is the most vast in the maritime territory, is only 2,000 kilometers from north to south, and the An-26, which has a range of 4,000 kilometers, can fully cover the South China Sea from south to north.

This is too important and precious enough for a navy that lacks air support.

The problem is that the two types of aircraft are not only small in number, but also have to frequently switch guards between the three fleets, not to mention that they cannot be stationed in one direction for a long time, and the cost of use is extremely high.

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

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

Others don't know the urgency of the Navy Headquarters, how can Song Changzheng, the leader who is mainly responsible for test flights, not be clear, but because of this, he can't be as blind as others, if something goes wrong and affects the planning of the Headquarters, it will be a big sin.

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

"At least 1800 hours. Qian Qiang replied 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 savage, but don't go too far." ”