"What you said is that our COMAC does not have a 4,000-shaft horsepower turboshaft engine," facing the suspicious eyes of Lieutenant Colonel Liu, Captain Li and Lieutenant Colonel Chu, Wang Dazhi nodded calmly, and then asked rhetorically: "But you shouldn't have seen the feasibility report submitted by our group to the Science and Technology Committee, right?"

And a feasibility report?

The three of you look at me, I look at you, and I am a little confused.

Looking at the confused appearance of Captain Li, Lieutenant Colonel Chu and Lieutenant Colonel Liu, Wang Dazhi smiled: "It seems that you really haven't read the report, let me explain to you, I told you just now, Mr. Victor thinks that it is not difficult to imitate the fuselage of the 'aerial crane', and the next problem is the power system, the traditional system and the rotor system."

In terms of power system, it is true that our COMAC does not have a turboshaft engine at the level of 4000 shaft horsepower, but we have a turboshaft-2000, and the maximum emergency power of the turboshaft-2000 is 2250 shaft horsepower, using 4 turboshaft-2000, and the maximum normal power of 8000 shaft horsepower.

Captain Li, you should know that although the 'aerial crane' claims to use two turboshaft engines with 4500 shaft horsepower, the performance of the main reducer of this helicopter is limited, and the maximum limited input power is only 6600 shaft horsepower, so 4 turboshaft-2000 is enough. ”

Well?

Because the engine power is not enough, so two more engines are piled up?

Is it so simple and crude?

Lieutenant Colonel Chu was very embarrassed to speak: "This...... Mr. Wang, I don't know technology, so I have a question that may seem naïve and ridiculous to you, please answer it without hesitation......"

"Just ask," Wang Dazhi smiled: "Everyone looks at the problem from a different angle, and I can understand this." ”

Since Wang Dazhi said so, Lieutenant Colonel Chu was no longer polite and said: "That's the case, with two more engines at once, will the pilot be a little scramble when controlling the plane? Will it be very troublesome to manage the engine?"

"I kind of understand what you mean," Wang Dazhi thought for a moment and said, "Do you think this thing is just like the bear child in the family, it's very annoying to manage one, and if you manage four at once, adults won't be able to manage it?"

"Yes, yes, that's what I mean. Lieutenant Colonel Chu nodded hurriedly.

"Actually, the engine is much easier to manage than the bear child," Wang Dazhi couldn't help but laugh, and said to Lieutenant Colonel Chu: "You said to the four bear children, 'Where are you honestly sitting for me', no little guy can sit honestly, but you say to the engine, 'You give me 1000 shaft horsepower', as long as the throttle is given, it will honestly give you 1000 shaft horsepower."

So your worries...... If you look at the Boeing 707, Boeing 747, C-141, and Il-76 aircraft, pilots have never felt that it is very difficult to manage four engines.

Let's take the 'aerial crane' as an example, for example, the 'aerial crane' suddenly an engine failed when performing a mission, lost power, at the moment the aircraft has only one engine available, even if the engine is fully output, it can only output 4500 shaft horsepower, but if it is four engines, even if one engine fails, the other three engines are still good, and there is also 6000 shaft horsepower available, do you say this is the truth?"

Hey?

Can it be understood like that?

Captain Li, Lieutenant Colonel Chu, and Lieutenant Colonel Liu scratched their heads, on the one hand, they felt that what Wang Dazhi said was reasonable, but on the other hand, they felt that something seemed to be wrong.

Looking at the three of them scratching their heads, Wang Dazhi smiled secretly in his heart, and then said: "Of course, to tell the truth, if we have a turboshaft engine with 4,000 shaft horsepower or even 5,000 shaft horsepower, we must have two engines directly, but the problem is that we don't have it."

On the one hand, we don't have such a high-power turboshaft engine, and on the other hand, our demand for this kind of heavy helicopter is real.

Speaking of this, Wang Dazhi added: "Oh, by the way, the power of a single engine is not enough, so the number of engines is used to make up the method, in fact, Americans often do it." ”

"Do Americans do the same?"

Hearing Wang Dazhi say this, Captain Li, Lieutenant Colonel Chu and Lieutenant Colonel Liu were all greatly surprised.

It's no wonder that they are surprised, in fact, in the eyes of the vast majority of Chinese people at this time, Millican is the most technologically advanced country on the planet, and they have what they want, especially in the field of aero engines, they have what kind of engines they want, so when did the Americans actually have to play the low forcing game of "engine performance is not enough, the number is to make up"?

"This aircraft is still very famous, it is the famous CH-53 'Stallion' heavy helicopter," Wang Dazhi nodded: "The early A and D types are directly equipped with two engine versions, and in the back, the US military requires the helicopter to be able to provide greater transportation capacity, so there is an E type with three engines, that is, the CH-53E, which also starts from the E type, and the subsequent versions of the CH-53 are equipped with three engines." ”

The early CH-53A and CH-53D turned out to have only two engines?

Wang Dazhi's words stunned Lieutenant Colonel Chu, Lieutenant Colonel Liu, and Captain Li.

The "Stallion" heavy helicopter is the most powerful heavy helicopter in the US military's active carrying capacity, for this helicopter they can be said to be well-known for a long time, for the main data of this aircraft can even be said to be a mouthful, but the "Stallion helicopter" actually has to play the game of "engine performance is not enough, the number is to make up"?

But they didn't think that Wang Dazhi would talk nonsense about this kind of thing, so this is true? In other words, the method of "engine performance is not enough, and the number is made up" is actually a method that has been used by foreign countries for a long time?

Things are so magical, before there is an actual example, Captain Li, Lieutenant Colonel Chu and Lieutenant Colonel Liu all feel that this method is too nonsense, but when they heard Wang Dazhi give an example, and it is also an example of the Americans, the three of them suddenly felt: Since the Americans have done this, then it must be no problem to do so.

"It seems that this is really possible," Lieutenant Colonel Chu nodded, "In that case, Mr. Wang, when can you start this project?"

"We don't have to say this," As soon as he said this, Wang Dazhi's expression suddenly became cautious: "How can this have to wait for the state to approve the project, right?"