Chapter 466

Along the direction of Qian Qiang's finger, people saw a gas turbine power plant, about three meters long, less than one meter high, on the thick test bench below, with its surface pipelines in disorder and its fuselage emitting a dark golden luster, surging on the test bench.

Seeing that other people were OK, Li Fang looked at Qian Qiang with a serious face and asked in a serious tone: "Qian Gong, are you sure that the maximum power of your d-50 has reached 3000 kW?"

Not only Li Fang, but also song Changzheng.

It's no wonder that the two people have such doubts, except that the sudden rise of Tengfei power plant from 1000 kW level d-40 to 3000 kW level d-50 surprised them.

The most important thing is that as naval armament technology experts, they have seen the same level of aero-engine, that is, the turboprop-6 on the yun-8 maritime patrol aircraft that was just equipped with the Navy a few years ago.

But just because of this, the more they look at the d-50 on the test bench, the more they frown. The reason is very simple. Compared with the turboprop-6 of the same level, the d-50 is one or two laps smaller than the turboprop-6 in other aspects except for its length.

It's just like two boxers, tall and short, but their weight is one or two levels lower. The skinny man who should play lightweight says that he has the strength to hit the heavyweight gold belt, so he has to try his weight with the heavyweight fat man, which makes people think that the skinny man is a bit out of his capacity.

At this moment, Li Fang and song Changzheng have the mentality of looking at the lightweight boxer when they watch the d-50. They should know that the power of the aero-engine has a great relationship with the air intake, so appropriately increasing the diameter of the engine helps to increase the air intake.

It seems that the d-50, which can take off aviation power, has no change in this aspect. Except for the lengthening of the whole engine, which is slightly thickened due to the complex external pipelines, there is no essential difference between the internal diameter of the whole engine and the d-40 gas turbine power unit parked nearby.

It can be said that the d-40 gas turbine power plant is a lapel extended version, but how can such a gas turbine power plant have 3000 kilowatts of power? You should know that yun-8's turboprop-6 is based on the similar engines of the Soviet Union, which is the best result determined by the strict calculation of the Soviet aviation technology department. So what do you think of it? What Qian Qiang said just now is a bit exaggerated.

Qian Qiang did not answer, but to one side of the operator asked: "Xiao Chen, now how much power?"

"Two thousand two."

"Three thousand."

"All right."

Before the voice fell, Xiao Chen slowly pushed up the control valve beside him, and the power on the constantly beating display began to jump up. Soon the number reached 3046 kW, so Xiao Chen stopped pushing up, and then looked at the data on the screen to see if there was any situation after the power went up.

In fact, you don't have to look at the numbers on the screen. From the increasing roar of the test bench, you can see that the power of the d-50 is increasing a little bit.

Until the harsh reputation filled the whole console, fortunately, the console was soundproofed. Otherwise, the huge noise from the gas turbine power plant would be enough to make the people inside hearing impaired.

However, Li Fang and song Changzheng didn't care about it. They just looked at each other in disbelief and didn't know what to say.

A lightweight boxer really has the strength to challenge a heavyweight.

This is already a miracle in the ring, but if it is put on the gas turbine power plant, it is a miracle in the miracle. We should know that the ultimate pursuit of all aviation equipment is to lighten as much as possible, so as to obtain better adaptability.

Gas turbine power plant is the same, whether it is used as aircraft power or ground power generation device, lightweight gas turbine power plant can become more flexible and convenient to use.

"Your d-50 should have a mass of about one ton?" After Li Fang and song Changzheng lowered their heads and exchanged two sentences, song Changzheng finally asked a question. Li Fang also looked at Qian Qiang waiting for an answer.

"A ton? When is the gas turbine power plant calculated by ton? We use kilogram to take off aviation power, but it's OK for the army to calculate like this. The total mass of our d-50 is 0.857 tons. "

Listen to Qian Qiang's words, Li Fang and song Changzheng make a big red face, but before they find a ground seam to drill in, they hear the figure of 0.857 tons. They are stunned for a moment, but they don't react. Li Fang just frowns and whispers: "less than a ton?"

"857 kg, far from a ton!" Director Zhao, who has been silent, finally can't go on. Qian Qiang just wanted to talk about the Navy, so he muddled along. As a result, old Qian came up and moved the troops out, and a map gun blew up director Zhao.

In addition, Li Fang and song Changzheng didn't understand the meaning of 0.857 tons for a while. Director Zhao finally couldn't help it and didn't give a good warning.

However, Li Fang and song Changzheng did not pay attention to Director Zhao's tone of hating iron but not steel, because both of them were surprised by the value of 857 kg. You know, the turboprop-6 weighs 1200 kg, 1.2 tons, so song Changzheng only uses tons.According to their estimation, it is not a small technological overflight to be able to reduce 200 kg compared with turboprop-6. As a result, the d-50 of take-off aviation power has not only dropped to less than 1000 kg, but also reached the incredible figure of 857 kg.

This not only surprised them, but also shocked them completely. It's a worldwide problem to reduce the weight of aviation equipment. In the East and West aspects of design, sometimes in order to achieve the weight reduction requirements of a structural part, the technical team really reduced the weight of one gram day and night.

It can be said that there is no small technological progress to meet the weight reduction requirements of the kilogram class. The technological leap of the hundred kilogram class is generally extravagant. However, the d-50 of the take-off aviation power is reduced by more than 300 kilograms compared with the turboprop-6 of the same class. That is not technological leap, but technological leap.

With light weight and sufficient power, it is equivalent to a simple structure on the plane and increasing the load. In other fields, it also has great potential. Therefore, Li Fang and song Changzheng showed a strong thirst for knowledge for the first time. In particular, Li Fang changed his previous high cold temperament and sincerely asked Qian Qiang, "Qian Gong, how did you do it?"

"Ah ~ ~ simple, we have increased the number of compressors from six to fourteen, and increased the air compression ratio; we have expanded the number of turbines from two to four, so as to improve the operation efficiency. Cooperating with the hx-4-1 core engine, the power has increased three times compared with the d-40 without increasing the diameter, which is the expansion limit of the hx-4-1 core engine..."

Qian Qiang was just about to say something more professional about the flow velocity and power conversion between the compressor and the turbine, but Li Fang interrupted: "Qian Gong, I'm not asking about the principle of the aero-engine, but how do you get the overall weight of 857kg? You know, the same level of turboprop-6 is 1.2 tons. Oh, no, it's 1200 kg. Your d-50 is 343 kg lower than turboprop-6. "

"Oh, that's it." Qian Qiang suddenly nodded: "of course, with new materials."