After a thousand years of trading, start a million barrels of oil

Chapter 245 Plus! (seeking a monthly ticket)

According to the thinking of Zhou Shi and others, everyone uses thawed chicken to do the bird strike test, so there is no need to think about why, just follow along.

But Fang Ling, who is a half layman in the material part, raised a question for them to think about, that is, if they don't thaw, will they really be unbearable?

While Zhou Shi casually told everyone an anecdote in the history of aviation, he also took this time to think about this issue:
"Because more and more bird strikes endangered the safety of aircraft, Boeing asked NASA engineers to design a special cannon that could shoot dead chickens as shells on the cockpit glass of the aircraft to simulate flying in the air at high speed. In case of impact with flying birds, test the safety design of the glass.

After Airbus knew about it, it also introduced this system to its own company.

On the day of the test, the dead chicken was launched from the gun barrel and hit the windshield of the Airbus aircraft at a high speed of 200km. It not only penetrated the windshield, but also broke the driver's seat!Finally through the cockpit door, the whole chicken was nailed to the cabin wall.

The Airbus engineers with weak legs realized that their design was so vulnerable!The design was revised in a hurry, but several months passed without any progress.

In the end, Airbus had no choice but to tell Boeing the appalling test results, attaching its unique and detailed windshield design, and humbly hoped that Boeing could provide suggestions for improvement.

After Airbus paid another US$1000 million in consulting fees, Boeing quickly responded with only one line:

The chicken needs to be thawed first! "

"Pfft~" Fang Ling and some colleagues who had never heard the story burst out laughing after hearing what Zhou Shi said.

Fang Ling laughed like a goose, and said while laughing: "Airbus. Airbus is really a fool."

But Zhou Shi's expression remained calm. After everyone finished laughing, he looked at them and said, "Do you really think Airbus's actions are funny?"

The crowd fell silent after being asked such a question.

Zhou Shi went on to say: "I think Airbus's use of frozen chickens at the beginning was not completely dull, but there was a certain reason for it.

Usually, when our planes fly, they will be driven away beforehand, and then fly at high altitudes, and they will also stay away from the bird flight zone.

Therefore, it is generally rare to encounter flying birds, and only one or two sporadic birds are encountered, so the experiment of shooting a chicken can basically meet the demand. "

Zhou Shi paused, and continued: "But is this really enough? Although the probability is very small, there are still cases where the plane hits a flock of birds, and a large number of birds hit the glass or are sucked into the engine.

Or not a flock of birds, but one or two larger birds like eagles, peregrine falcons, etc., which are larger and have stronger bones.

If these birds are involved, will our engines still be able to run normally?
Especially when the thrust of the engine increases, the speed of the aircraft and the entrainment of the engine increase, even if the flock of birds sees our aircraft approaching, it may be too late to avoid it. Do you still think that this situation is still negligible? "

Zhou Shi's words made everyone think a little more. Indeed, if the equivalent change has increased to a certain level, the qualitative change caused may really not be able to rely on the original inertia to think.

Zhou Shi continued: "Of course, we can't use eagles or peregrine falcons for experiments, that's to protect animals, and we can't stuff a group of chickens into the air gun barrel, it doesn't have this function at all.

So in comparison, using a frozen chicken to increase its collision intensity is undoubtedly a relatively simple and effective alternative. "

Fang Ling understood, and added her own opinion: "That is to say, Airbus was not just stupid at the beginning, but they thought that Boeing was making things with this higher standard, so they wanted to match it.

It was only later that I found that Boeing could not do it, so I lowered my requirements and made it with thawed chicken. "

Zhou Shi nodded. He thought so too, but he also said, "Of course, we have to wait for Mr. Jiang to come over and discuss this with him to see what he thinks."

Just at this time, Jiang Fan, the dean, Gao Sili and a group of big shots came over while talking. After working so hard for so long, they will naturally not be absent at such an important moment as the test drive.

"Xiao Zhou, how are your preparations going?" The dean asked about Zhou Shi's progress.

Zhou Shi replied: "It's all ready, but there is one point I want to confirm with the dean, Mr. Jiang and Mr. Gao, that is whether we should use frozen chicken or thawed chicken for the bird strike test."

Jiang Fan's eyes that were thinking about the question suddenly moved, and he immediately understood what Zhou Shi meant. This was a very interesting question.

Jiang Fan looked at Gao Sili, who had worked across the street.

Gao Sili smiled, and said: "They want to use it, but they can't do it in strength, so they still use the traditional standard."

Jiang Fan understood, looked at Zhou Shi and said, "Our thrust increase this time will be unprecedented, and the situation it will encounter after it lifts off will also be unprecedentedly complicated.

So we need stronger experiments to ensure its safety, so. Bird strike test with unthawed chicken. "

After Zhou Shi heard Jiang Fan's words, the corners of his eyebrows moved slightly, but he still nodded solemnly and said, "Okay, I understand!"

The engine test starts.

"Check the fire detection system."

"The inspection is complete, it is normal."

"Hydraulic system on."

"Finish."

"Confirm the position of each switch."

"Confirmation completed, correct."

"Come on, let's start!"

Following Zhou Shi's order, aviation fuel was poured into the combustion chamber of the engine along the fuel pipe, and correspondingly, the engine blades that were originally stationary began to rotate slowly.

With the accelerated rotation of the fan blades, the hearts of all the people present rose to their throats, and Jiang Fan, who had always been calm, couldn't help grunting in his throat.

The speed continues to increase, 1000 rpm, 3000 rpm, 5000 rpm, 10000 rpm.

As the speed increased, the roar of the engine became louder and louder, and its thrust soon reached the 1000 tons of the original most advanced Changjiang 13 engine made in China.

But when it exceeds this value, no one has any expression on their faces, and the original limit thrust is now not even qualified to be surprised for a while.

The thrust continued to climb, and it didn't take long before reaching 30 tons.

This value has already made some people a little excited. This is already the thrust level of the engines installed in some old large aircrafts. Reaching this level means that it has full commercial value.

But the expressions of Jiang Fan, the dean and others remained unchanged.

"Continue to increase power." Zhou Shi gave an order.

After he gave an order, the turbofan of the engine began to spin more crazily, and the thrust gradually reached 50 tons.

This value made Fang Ling and other R&D and testing personnel a little bit excited. It exceeded 50 tons, which shows that it is already at the same level as the opponent's latest 61 tons, although it is still a bit behind.

"Boss Jiang, do you want to increase it?" Although Zhou Shi was calm on the surface, he was actually very excited in his heart. He never thought that he would have the opportunity to test the thrust of more than 50 tons.

This not only means that we have entered the field of aviation development, but also directly reach the world's most advanced level, and we can stand up everywhere in the future.

But Jiang Fan's expression remained calm, and he said, "Add!"

(End of this chapter)