Automotive Black Technology Chapter 758: : This is not just a joke!
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"Director Li! Are you sure this thing can...?" Xu Guan was too embarrassed to continue, but made a long sound to express his doubts and shock.
But Li Fanyu knew what he wanted to express and smiled: "Captain Xu, the Qingtian Fire Fighting Platform is a bit unconventional. But conventions are meant to be broken, right?"
Xu Guan pondered for a moment, "Well, I'm sorry, Director Li, I'm not questioning Zhengxin's R&D capabilities, but I really didn't expect that the fire ladder could have this structure."
Xu Guan said this, but in fact he still felt a little unsure. In his opinion, the structure of the upper body of fire-fighting equipment is so complicated that Masanobu developed it in only two months. Even if the R&D capabilities are amazing, it still gives people a feeling of being careless.
And in his opinion, it is impossible for Zhengxin to develop a complete heavy-duty fire truck including a tractor chassis in such a short period of time.
Seeing the fierce and powerful F750 at the front, he thought that Zhengxin might have randomly found a previously developed heavy truck model to mess around with.
It’s not that he has any prejudice against Zhengxin. On the contrary, as a Tiancheng native, and Li Fanyu's respect for the martyrs during the April 2 fire, he had a very strong sense of identification with both Zhengxin and Li Fanyu.
The reason why he has such doubts is that as a firefighter, he knows the importance of fire equipment very well.
If the car is not well made and problems occur, the accident may involve the car owner and a small number of people.
But if things like fire-fighting equipment that carry human lives in times of crisis are careless, it will undoubtedly bring about a disaster based on disaster.
Professional ethics constantly reminded him that he must put aside his personal emotions and adopt a cautious attitude towards Zhengxin's Qingtian heavy-duty fire ladder.
Li Fan Yubo caught Xu Guan’s complicated expression and understood in his heart.
He waved his hand and said with a smile: "It doesn't matter, I can understand. The fire ladder has always had the same structure. Now if you suddenly see a different idea, no one will be used to it. But Captain Xu, I promise that after the test is completed, , you will change your mind. Now let’s stop worrying about these secondary issues and start testing?”
Xu Guan nodded, "Okay, Director Li, let's start."
Because the strange-looking fire ladder truck parked silently in front of everyone now was independently designed and developed by Zhengshin from the chassis to the upper body.
So this time we mainly conducted a comprehensive feasibility test.
This represents the acceleration, deceleration, braking and other performance of the F750. The performance of the ladder such as its extension speed, stability, load-bearing capacity, and sensitivity of the control system all require a comprehensive consideration.
When a fire occurs, these performances are related to the rescue time and even the life safety of firefighters and trapped people. Therefore, the testing procedures required are very complicated and careful. This is the fundamental reason why professional fire fighters are required to participate in the first test.
As Li Fanyu waved, the firefighter who had been waiting next to Qingtian immediately started pedaling accompanied by the product engineer.
The first thing to do is the basic performance of the vehicle, including acceleration, braking and other data.
Now that the test track behind the R&D center has been completed, testing of models of all levels and types can already be carried out.
So under the guidance of the product engineer, the firefighter responsible for driving drove the car directly to Zhengxin's standard test track.
After preparations are completed, the basic performance test of the vehicle begins.
Because it is towing a general firefighting platform that is more than ten meters long and weighs up to twenty tons, the 0-100KM acceleration time of Qingtian with F750 as the towing part can be described in four words.
Poor! No! Tolerate! see!
Twenty-six seconds,
Li Fanyu covered his face when he saw the speed displayed on the computer.
The last time I personally conducted a vehicle test, it was the Longbow... Compared to the Longbow's incredible acceleration, this... is really hard to look down upon.
But Xu Guan, standing next to him, nodded with satisfaction and praised Li Fanyu: "The motivation is good!"
I'll wipe it!
Li Fan is confused.
Is this acceleration pretty good?
Okay, I like you guys who are so ignorant!
Li Fanyu could only giggle in embarrassment.
It wasn't until more than fifty seconds later that Qingtian ran at a top speed of 155KM/h that Li Fanyu nodded with satisfaction. For a heavy-duty truck towing heavy objects, this result is still acceptable.
It seems that the performance of the TS-L609 diesel engine is still good after the cylinder block was redesigned and the piston was shortened.
He was satisfied, and Xu Guan on the side was of course even more surprised!
He clearly knows that the Manson Clay 7OS-III fire ladder truck in the squadron, which uses a Mercedes-Benz Actos tractor head, has a maximum speed of only 115KM/h!
During the rescue process of the fire truck, the faster it arrives at the scene, the more time it will take for the rescue and the safety of the people's property will be added!
From this point of view, the essence of a fire truck is the same as an ambulance.
Speed is equal to time, and time is equal to life!
However, this was not the most surprising and shocking part of Xu Guan's test.
When the 100-0KM braking test data appeared on the screen of the test laptop, Xu Guan stared directly at Li Fanyu and said, "Is this really true?"
The test data on the laptop clearly says 61M!
In other words, the dead weight is up to 6.5 tons, plus a general firefighting platform and ladder weighing 20 tons. Qingtian went from a speed of 100KM/h to a standstill in a short distance of 53 meters!
The greater the mass of an object, the greater its inertia. This is a law of physics. For thousands of years, all moving objects must abide by this law, except for a few protagonists in Japanese comics who are not restricted by this law.
Then the question is, is the braking distance from 100 kilometers of 53 meters short?
Compared with Zhengshin's longbow and RS, it is not short.
However, if compared with all heavy trucks of the same level as the F750, and even most low-level light trucks, this braking distance result is simply amazing!
When an ordinary family car reaches a speed of 100 kilometers per hour, the braking distance is 40 to 45 meters, and the braking distance of an ordinary large truck when empty is more than 50 meters! If the truck is fully loaded, the braking distance will generally exceed 100 meters.
When a heavy truck is driving with a heavy load, if you brake with full force, the loaded goods will rush to the front due to inertia, even crushing the front of the truck, or pushing the driver's cockpit and iron belt flat. A semi-trailer tractor is more dangerous. If its front wheel braking ability is relatively good and there is a time lag between the front wheel braking and the rear wheel braking, the front of the vehicle slows down and the carriage is still running forward. The front and the carriage may "fold" together, which is very serious. Easy to roll over. Many manufacturers cancel the front wheel brakes for safety reasons. This has become an unspoken rule in the industry.
For such a truck, it is possible to brake from 100-0KM to 1000 meters!
What does shorter braking distance mean?
This means that drivers can safely drive on the highway without worrying about the danger that high speeds may bring to themselves or other pedestrians!
Because they can stop the car when such danger occurs!
Such braking performance is undoubtedly a guarantee and good news for fire trucks that often shuttle at high speeds in urban areas and rush to fire scenes!
The question asked by Xu Guan is actually a wrong sentence.
But Li Fanyu could understand this incoherence. He spread his hands and said calmly: "Captain Xu, as you can see."
On the surface, Li Fanyu looks calm and calm, but Li Fanyu is already **** off in his heart;
This is the expression I want!
Wow haha!
The six pairs of 385/95R25 tires on the F750 are expensive!
Humph, are the R25 wheels and 385mm wide tires specially upgraded by me a fake?
On the F750, it is equipped with a fully floating brake that has been weakened based on the Hot Wheels braking system, but the structure has been upgraded. This brake uses a uniquely designed wet brake pad. Compared with the heavy truck brake, the size does not change, and the fit reaches 95%!
Nowadays, the contact area of general heavy truck brakes is only 50-60%, and the total contact area of the brake accounts for less than 50% of the entire circumference.
The fully floating brake now equipped on the F750 has a brake pad contact area of 320 degrees. Through special changes in the physical structure, the total contact area is more than three times that of existing brakes!
Do you really think these things are all fake?
Although the development time for the four parts of the entire Atlas project was short, key results were quickly achieved. But Li Fanyu can pat his chest and guarantee that all designs exist to meet the ultimate goal of saving people from fire and water.
Without a little bit of irrigation and coping!