Chapter 266 Another pearl is inlaid
Chapter 266 Another pearl is inlaid
After Kang Chi’s very affirmative answer, except for the R&D team of WS-30, everyone on the scene was stunned…
This made Yan Hui and others feel a little happy. After all, this engine is also their hard work during this period. Seeing that he surprised so many leaders, how could they not feel proud and superior.
Finally understand why Kang Chi always likes to show off mystery, or to whet people’s appetite…
This feeling is really addictive!
However, even though Yan Hui and others participated in the manufacturing, they were not absolutely sure about the performance of this engine, so they were still a little nervous at this time, fearing that the test results would disappoint everyone.
After a brief moment of secretly rejoicing, Yan Hui quickly adjusted his state and no longer paid attention to the emotions of the leaders who visited the test. After looking at the data on the screen, he said in a deep voice: “Prepare for variable bypass cruise test, engine ignition!”
”Engine ignition!”
”Turn off the variable cycle afterburner function and increase the power in the 6 bypass ratio state.”
”Received, 6 bypass ratio power will start to increase slowly in 5 seconds!”
As the tester pushed the lever again, the test bench tension curve on the screen suddenly began to rise sharply.
“150KN, 200KN, 250KN… 312.6KN! 6 bypass ratio with afterburner off, maximum thrust 312.6KN, fuel consumption 0.765Kg/KN·h!”
”6 bypass ratio 60% throttle cruise test.”
”Adjust the throttle to 60%… thrust 219.6KN, fuel consumption 0.564Kg/KN·h.”
After hearing this result, Chief Shen’s hands tightened subconsciously.
Without turning on the afterburner, the maximum thrust can reach 312.6KN, and the cruise thrust is 312.6KN. This result is indeed enough to exchange two for four.
And the fuel consumption of 0.564Kg/KN·h is only 0.157Kg/KN·h higher than the WS-20 with a fuel consumption of 0.407Kg/KN·h.
But the thrust it provides is almost equivalent to that of two WS-20s!
In this case, even without variable bypass technology, the overall fuel consumption of the Y-20 can be reduced from 1.628 to 1.128 by replacing four engines with two, and the theoretical endurance can be increased by at least 44%.
And this is still a simple conclusion drawn by calculating the fuel consumption of the engine.
According to the information just given by Kang Chi, this engine uses a large amount of low-density and high-strength structural ceramic materials such as PG01, and the overall weight is only 59% of the WS-20.
In addition, it is still four engines replaced by two…
The thrust-to-weight ratio of the aircraft will be greatly improved.
Therefore, the increase in range can definitely exceed 50%!
This means that the maximum range and full-load range of the Y-20S in the future are expected to exceed 12,000 kilometers and 6,000 kilometers respectively!
Thinking of this, Chief Shen was a little uneasy again.
”It’s true that the young are formidable…”
”What’s this?” Chief Lu squinted his eyebrows with a little pride: “I’m almost used to it…”
”And it’s not okay to not get used to it, otherwise you’ll get a heart attack sooner or later.”
”…”
”Push the maximum throttle and adjust the bypass ratio to 10!”
After a short test of 6 bypass ratio without afterburner, it was finally time to change the bypass ratio.
Everyone suddenly widened their eyes and stared at the real-time picture of the engine, wanting to see how this thing changes the bypass ratio.
However, after Kang Chi just revealed that this engine could change the bypass ratio, Dong Jun and others actually roughly guessed its variable bypass principle through the design of this engine.
At the same time, this also explains why its engine air intake and blades are half-folded like an umbrella, and why the shell looks like strips of material welded together…
These designs are all prepared for changing the bypass!
But the question is, can such a complex structure really be realized? ”100% throttle, start changing the bypass…7 bypass ratio, 8 bypass ratio…10 bypass ratio!”
Everyone witnessed the whole process of the engine slowly deforming under the operation of the test engineer through the real-time picture of the engine.
The whole process also looksIt’s very simple. It feels like the front half of the engine is stretching and expanding, and then the front leaf umbrella is fully expanded as the engine grows larger, and finally the engine becomes a horizontal frustum.
The so-called frustum is the section where the cone cuts off the tip, and the cross section is the engine’s jet port. In the process of changing the duct, the size of the jet port remains unchanged.
Although it looks simple, everyone on the scene knows that this is a demanding requirement for technology and craftsmanship, because the engine is running at high power at this time. Any imbalance may cause severe surging, and in severe cases, the entire engine may even be scrapped directly.
However, at present, the engine is still running very stably, and the situation that everyone is worried about has not occurred.
The diameter of the air intake at this time is at least seven meters, which looks very huge. Just listening to the roaring sound makes people feel infinitely powerful.
Just as everyone was about to shift their attention to look at the thrust data, the test engineer spoke first: “The variable bypass test is complete. The engine ran stably throughout the process, and no special surge was found. The engine currently has a thrust of 426.9KN!”
Wow——
Hearing this data, the scene was immediately boiling! ”Fuck, this is too abnormal, isn’t it?”
”The performance improvement of the variable bypass is so great?”
”And the fuel consumption is still 0.765Kg/KN·h…”
”This technology is too terrifying!”
”…”
Although more than 80% of the thrust of the turbofan engine is provided by the external bypass, now that the bypass ratio has increased so much, the thrust is definitely increased, but when the results came out, everyone was still really shocked.
“The throttle is reduced to 40%!”
Because the test time was limited, Yan Hui completely ignored the outside world’s reaction and issued the next command on time. The scene suddenly became quiet again, trying not to disturb the test.
”The throttle is reduced to 40%, the engine’s current thrust is 256.5KN, and the fuel consumption rate is 0.364Kg/KN·h!”
”The throttle is reduced to the minimum, and prepare for the end of the test.”
”Received, entering the end of the test…”
As the test entered the end in an orderly manner, the scene finally gave thunderous applause and cheers.
”Good, great! Congratulations to Dr. Kang!”
At this moment, Chief Shen no longer cared about his calm demeanor. While clapping with everyone, a big smile appeared on his face.
Then, Kang Chi finally knew why he never smiled with his teeth showing.
Because his front teeth were empty…
That’s not right. Can’t we just fill in the missing front teeth? Is there any hidden secret or story behind it? Although Kang Chi was a little curious, he didn’t show any doubt on his face. He just smiled and said, “Thank you, leader. Today we are all celebrating together.”
”Yes, let’s celebrate together! It’s a blessing for China to have talents like Dr. Kang!”
”You’re too kind, Chief Shen.”
”Oh, not at all!” Chief Shen gently pulled Kang Chi with his wrinkled hands, “You must be hungry after testing for so long. Let’s go eat together. We must give Dr. Kang some chicken legs at noon today!”
”Yes, we must give Mr. Kang some chicken legs!”
”Add 99 chicken legs!”
Looking at everyone making a fuss, Kang Chi was also a little amused.
Just when everyone was immersed in joy, Dong Jun and Chi Jinliang also squeezed over, looked at Kang Chi a little shyly, and whispered after a while: “Boss Kang is awesome…”
Everyone burst into laughter after hearing this.
”Is Boss Dong hungry? Boss Kang didn’t hear you even if you said so quietly.”
”I heard that your bet is to shout three sentences?”
”…”
Hearing everyone’s booing, Dong Jun was so embarrassed that he could dig out a three-bedroom, two-living-room apartment with his toes…
But he was willing to accept the loss, and he couldn’t cheat in front of so many leaders, right? The two of them simply went all out and shouted with all their might: ”Boss Kang is awesome!”
”Boss Kang is awesome!!”
So there was another round of warm laughter and applause at the scene.
Kang Chi also patted the two on the shoulders and said to them with a smile: “Actually, I just wanted you to help me build the Yun-20S quickly. I hope you don’t take it too seriously.”
”Well, actually we just figured this out, so these few sentences just now,In fact, it is from the bottom of my heart. Mr. Kang… is really awesome.”
”Well, in fact, you are also awesome. If it were not for your drawings, I would not be able to build the engine so quickly, so I am also standing on the shoulders of giants… and I heard that you can build the fuselage of the Y-20S in at most one month, which is actually very fast.”
”It won’t take a month. We will speed up the progress after we go back and try to build the fuselage for you in mid-April.”
”Okay, then I’ll trouble you.” Kang Chi looked at Dong Jun expectantly and said, “I believe everyone wants to see it take off with the WS-30 installed as soon as possible.”
”Well… by the way, I actually have a doubt. Just now, under the condition of 10 bypass ratio, the thrust was 426.9KN without the afterburner. If the afterburner is activated, wouldn’t the thrust be far more than 495.2KN at 6 bypass ratio?”
”In theory, it is true. “Kang Chi nodded,
”In the highest power test just now conducted at a bypass ratio of 6, the efficiency of the afterburner was indeed not maximized, so theoretically its maximum thrust at a bypass ratio of 10 will indeed far exceed 495.2KN.”
”The problem is that at a bypass ratio of 10, although the intake volume has increased, the afterburner is still the same combustion chamber, and its performance has not changed, so the maximum power is still limited by the maximum energy efficiency of the two combustion chambers.”
”Although the performance of PG01 is strong, it also has a limit. When the afterburner is running at its limit, the service life of the engine will also be reduced.”
”So under normal circumstances, the thrust of the engine will be limited to about 500KN. Unless there is an emergency, I do not recommend lifting this limit… We will also conduct extreme tests in this area in the afternoon. ”
Dong Jun nodded, and found that his thinking was a bit too idealistic.
Even a bit too greedy.
When the bypass ratio is high, it means that the aircraft has entered the cruising state. At this time, the pursuit is also fuel saving rather than performance.
You can’t have both performance and fuel saving…
After everyone went to the cafeteria to eat lunch, they soon returned to the test room. The highlight of the afternoon test was the extreme thrust of this engine. After completing this test, the performance parameters of this engine were basically completed.
“6 bypass ratio, turn on the adaptive variable cycle afterburner, release the maximum throttle limit, and prepare the engine for ignition…”
The first round of testing is still the maximum thrust of 6 bypass ratio.
After the throttle limit is released, the fuel injector will spray fuel at the maximum speed. If it exceeds the combustion limit, the fuel may not even burn and be sprayed out directly. At this time, the thrust may decrease.
Soon, the curve data of the maximum thrust came out.
”Maximum thrust 589.7KN! ”
Hearing this data, everyone’s brows couldn’t help but jump.
Currently, the engine with the highest thrust in the world is Boeing’s GE9X, which has a normal maximum thrust of 470KN and a maximum thrust of 598.2KN (61 tons).
Although the limit data of the WS-30 just now is a little less than that of the GE9X,
But this is under the condition of 6 bypass ratio! Everyone began to have a vague premonition…
Today,
I’m afraid I can witness with my own eyes that a world record has been broken! This world record is not a weird record for children playing house.
Aeroengines are definitely one of the most valuable pearls in the crown of industry.
Moreover, more than 80% of the core technologies and components of aircraft engines and gas turbines are They are all universal, so the fields and significance involved are far more than just a space engine. It has a very broad application space in the fields of ships, warships, power generation, etc.
”The 12th item in the first round of testing, extreme thrust test, 10 bypass ratio, open adaptive variable cycle afterburner, release the maximum throttle limit, and prepare the engine for ignition…”
As Kang Chi read out this test item, everyone suddenly became nervous again, began to hold their breath, and stared at the data on the big screen.
Soon, the engine screamed from the next door, and it became louder and louder, and the flames from the tail of the engine became longer and longer…
400KN, 500KN, 600KN…
664.5KN (67.7 tons)! ! When I saw the peak of the thrust curveAfter the value, almost everyone’s eyes showed a different look,
Just as everyone expected.
Just at this moment, this engine with black technology really broke the record of the maximum thrust of the world’s aerospace engine! And it was 6.76 tons higher! Three seconds later, the engine began to slowly reduce power, and then stopped to enter the cooling stage.
Before the test engineer reported the specific data, the whole laboratory suddenly boiled.
”Fuck, awesome!”
”As soon as President Kang made a move, the world record had to be replaced by our China’s name!”
”President Kang is mighty!”
”Overtaking in a straight line, far ahead!”
”Today, there is another pearl on the crown of China’s industry!”
”…”
Everyone clapped their hands frantically, even if their palms were almost red and aching before, but at this moment, everyone still couldn’t help but use their greatest strength and gave the biggest applause.
In the spacious control room, boiling cheers and thunderous applause echoed all over the place in an instant and lasted for a long time…
(End of this chapter)