"On the first day, I started to pit stop for refueling training, even if there is no problem flying, can the other two Chinese boys do it?"

Prost asked rhetorically at this time, he was already accustomed to Cosell's radical style when he was in McLaren.

But the problem is that the winter training period has just started today, and there is still nearly a month to run in and become proficient. Refueling is far more dangerous than changing tires, and there are two Chinese rookie technicians in the maintenance team, is it really so radical?

"I'm sure they can do it."

After Korcel finished saying this, he directly pressed the call button on the headset and began to give instructions to all the team members, showing his trust in Ah Hu with his own actions.

"The team of technicians is ready to start a full set of simulated pit stop training for the next lap of pit stops, including refueling."

Hearing Kossel's command, the members of the Prost team mechanics had a little surprise on their faces. This is because according to the previous Ligier Racing Team's driver training plan, it would take at least three days of pit stop tyre change practice before starting pit stop refueling training.

Because most of the major accidents that have occurred in the history of the maintenance station are related to refueling.

For example, in the 1994 German Grand Prix, Benetton driver Jos Verstappen (father of Max Verstappen, the youngest F1 driver mentioned above), had a serious pit stop at Hockenheim during his second pit stop.

Before the gun was turned off and pulled out, Verstappen geared into the car and started the car, causing the oil filling port to fall off and the gasoline in the hose to spray out.

Some of them were sprayed on the engine of the car, and the high temperature of the engine and exhaust instantly ignited the atomized gasoline, and the entire pit area became a sea of fire.

Gasoline is very adhesive, not to mention Formula 1 oil, because of various additives, the energy density is higher than that of ordinary gasoline. Once ignited by a hot car, it's almost no different from dropping a Molotov cocktail.

Under such high temperatures, even racing fireproof clothing cannot completely protect the driver. Almost instantly, Verstappen was in flames, badly injured by the scorching flames.

And it wasn't just the drivers who suffered, but also the surrounding team staff, especially the two mechanics who operated the oil pipes, who were drenched in gasoline sprays.

In the end, the team maintenance personnel left the F1 paddock forever because of the irreparable injuries left by this pit stop accident.

This kind of inbound refueling accident is not an isolated case, it basically occurs every year, but the severity is different. Failure to change tires is a waste of time at most, and if there is a little accident with refueling, it may be life-threatening.

Therefore, in Zhang Yifei's previous pit stop tire change practice, Prost did not add the refueling project, because of his conservative character and unwillingness to take risks.

But now that Korsell has given the order to refuel, as the chief race engineer, he has the authority to control the whole situation. And the Prost maintenance team is not a new recruit, this kind of pit stop training for them, it can be described as extremely skilled.

After a short period of surprise, Charlie quickly made an assignment, and all 22 maintenance technicians entered their posts and began to prepare for refueling training.

Compared with the previous tire change training, this time there are mainly two more technicians who control the tubing, and these two are the most "strong and mighty" in the entire technician team.

Don't think that the F1 refueling line is like the little grease gun in the gas station. With the efficiency of the oil gun, it takes dozens of seconds to fill the fuel tank of a civilian car.

The size of the fuel tank of the F1 car is a confidential category for the team, and no team will disclose the amount of fuel in their car. However, based on the number of pit stops and refueling time, it can be roughly guessed that the fuel tank volume is about 130L.

For a race against time like F1, if it takes a minute or two to refuel, then you don't have to run, after all, it doesn't take you two minutes to run a lap of the track!

So the F1 refueling lines are very thick high-pressure fuel lines, once the car has come to a pit stop and is parked, the technician needs to carry the huge weight of the refueling line on his shoulder, one of them is connected to the oil port, and the other person is responsible for keeping the oil line smooth.

After being pressurized by the oil pump, 12 liters of fuel can be injected per second, far exceeding the efficiency of civilian gas stations. It is precisely because the refueling pipeline is not only heavy, but also has the same impact as the high-pressure water gun, so if there is a slight mistake in the cooperation, the fuel will also be sprayed like a water bursting pipe.

In order to avoid such accidents as much as possible, behind the two refueling technicians, there will be two technicians on standby, whose role is to hold a huge fire extinguisher with a capacity of 60 liters, and try to take remedial measures after the accident.

For the first pit stop for refueling training, the maintenance team members were very serious, standing on both sides of the parking space with tools in hand, waiting for Zhang Yifei to pit for the car.

Ah Hu and Chen Zhi are also standing in the crowd of technicians, and this time they belong to the 20s and all of them, which looks a little crowded from the outside, so the requirements for standing and cooperation will be higher.

"Brother Zhi, the old man in Germany gave the order for refueling training on the first day, isn't it a bit ahead?"

"That's his style, be attentive."

Chen Zhi reminded Ah Hu that now is not the time to chat and discuss Korser, the race engineer has absolute authority on the track, and the maintenance team must implement the instructions, and the strategy does not need a technician to consider.

"Brother Zhi, in fact, I'm a little nervous, and it's much better to talk to you."

In the face of Chen Zhi's instructions, Ah Hu said what was in his heart, and he didn't dare to question Cosell's instructions. It's just that there is a lot of practice today, and he is very unconfident in himself.

After all, today is not only the first time Zhang Yifei has received pit stop training, but also the first time that the two of them have cooperated with the maintenance team. In particular, Ah Hu is younger than Zhang Yifei, and a few months ago he was a teenager who had never seen the world, so it was false to say that he was not nervous.

"It's okay, the two of us haven't changed, just the same process as before."

Naturally, it is impossible to hand over the matter of controlling the refueling pipeline to the two rookie technicians, so Ah Hu and Chen Zhi still changed the left front tire without the slightest change.

Hearing Chen Zhi's words, Ah Hu was a little relieved, after all, he had performed very well in dozens of pit stops before. Now it's just a matter of doing it again, and there should be no problem.

The roar of the engine of the JS51 car came quickly, and Zhang Yifei naturally knew the danger of making a pit stop to refuel, so this time he was extra serious and didn't want to make any mistakes because of his own factors.

Seeing the sign in Charlie's hand, Zhang Yifei braked and accurately parked the car in the maintenance parking space.

Now is the last pit stop training today, Zhang Yifei does not have to think about the wear and tear of the tires after the brakes are pressed, so this pit stop is easier for Zhang Yifei.

Technically, the operation is simpler, but in terms of psychological requirements, it will be more stringent.

Zhang Yifei focused on locking the signs, and constantly observed the movements of the refueling technician through the rearview mirror. In this way, the moment the sign flips, the car can be started immediately and the car exits without wasting a millisecond.

It's a lot like waiting time for a 100-meter dash, and all athletes know in their hearts that they can't start until the starter gives the order. But in fact, there are countless things like rushing in competitions, even at the highest level of the Olympic Games, almost every game can be seen.

Can this be said that the athlete is not mentally good enough or is not concentrating?

The answer, of course, is no, to be able to stand on the Olympic sprint track, the level of athletes can no longer be described as one in a million, but one in a hundred million!

The reason why there is a rush is because of the high concentration of attention, coupled with the desire to strive for that millisecond advantage. Any disturbance will make the athletes instinctively rush out, leading to a rush situation.

It's the same with F1 cars, and drivers know in their hearts that they can't start until the fuel hose is unplugged and the sign prompts to be in gear.

But in fact, in order to save this reaction time, many drivers directly gear and press the clutch to wait. They may have seen the sign shake a little, and subconsciously thought it would flip over, and kicked the accelerator out.

In addition, the "lollipop man" also has to buy time for the driver, and the refueling technician may have just pulled the gas pipe, and the sign in his hand has been flipped over, causing the driver to leave the pit early.

These two situations are the main causes of refueling accidents at the repair station.

After the car was stopped, the jack lifted the car, and all the technicians gathered around, going about their division of labor like a precision machine.

But at this time, an accident occurred, after Ah Hu took off the left front tire, in the process of retreating and giving way, he followed Chen Zhi, who was going to change to a new tire, and the two collided directly.

This collision made Ah Hu's hand not hold the tire steady, and he fell to the ground and rolled into the refueling technician on the back side.

F1 racing tires are lighter than ordinary car tires because they don't have an inner layer of steel wire, but with the aluminum-magnesium alloy wheels, it's still a bit heavy to hit over.

What's more, the refueling technician is carrying a heavy refueling pipe on his shoulders, and he didn't expect anything to hit his leg. So this collision directly made his body shake violently, and the refueling pipe was about to fall off from the oil port.

Originally, this was the first time that the track had a complete pit stop practice, and the members in the P room also paid close attention to the pit stop refueling situation.

As a result, I didn't expect this unexpected situation, if the fuel pipe fell off from the oil port, up to 12 liters of gasoline per second would be instantly poured on everyone in the parking space, including the driver Zhang Yifei.

Moreover, the JS51 car has been running on the track for almost two hours, and the engine temperature is already terrifyingly high, as long as there is a gasoline dripping on it, it will detonate like a bomb.

When this scene appeared, even Kossel, who had always been relatively calm and calm, had a change in the expression on his face!