Hearing Zhou Xiangming's words, Wu Hao nodded, and then looked at the real-time images captured and transmitted by the on-board surveillance cameras and high-definition patrol lenses on the four vehicles displayed on the big screen.
It can be seen from the frontal video footage transmitted back by the fourth vehicle that the four vehicles are forming a convoy and driving on the uneven lunar surface.
The distance between the four vehicles is about twenty meters, thus forming a convoy with a length of eighty meters.
The reason why they are so far apart is mainly for safety reasons. Experienced drivers all know that if you follow a car too close, a rear-end collision may easily occur.
Therefore, in order to avoid a rear-end collision caused by the vehicle in front suddenly decelerating or stopping during fast driving, the distance between the four vehicles was set relatively far by technicians.
From the frontal high-definition inspection lens on the first vehicle, we can see that in front of the convoy is an endless lunar surface, with pits and craters of different sizes scattered among them, as well as some large and small stones and mounds scattered among them. This vast white lifeless moon surface.
As for the sky, it was shrouded in black, with no stars visible, just like a black curtain.
What's the current speed? Wu Hao asked.
After hearing Wu Hao's inquiry, Zhou Xiangming immediately responded: "In order to ensure the safety of the entire convoy during the journey, we deliberately controlled the speed of the entire convoy to about 20 to 25 kilometers per hour.
In this way, it can greatly reduce the possibility of accidents when the vehicle is traveling due to excessive speed. It can also minimize the wear and tear on the wheels caused by excessive speed. It can also reduce the risk of various electronic components in the vehicle. The heat loss of the device, especially the heat of the core components, thereby prolonging their use and reducing the risk. "
Can we get there in seven days at this speed? Hearing Zhou Xiangming's inquiry, Zhang Jun couldn't help but worry.
After hearing Zhang Jun's question, Yu Chengwu smiled and replied without waiting for Zhou Xiangming's answer: "There is no problem at all. According to the current traveling speed of twenty to twenty-five kilometers per hour, we will travel for about ten to twelve hours a day. About half an hour, and the remaining twelve hours are used for solar panels to generate electricity.
Even if we calculate based on the most basic traveling speed of twenty kilometers per hour and ten hours of traveling time per day, we can travel at a speed of two hundred kilometers per day and reach our destination in seven days.
Of course, this is the most conservative estimate. According to normal estimates, our daily travel distance is about two hundred to three hundred kilometers. Based on a compromise average of two hundred and fifty kilometers, it only takes us less than six days to reach our destination. "
Hearing Yu Chengwu's words, Wu Hao turned to look at him and said, "You are just assuming that everything goes well. If there is a problem with the vehicle midway, will the time lost for emergency repairs be included in the calculation?"
Seeing Wu Hao asking this question, Zhou Xiangming took over Yu Chengwu's words and nodded: "We have taken into account all the accidents that occurred during the convoy's journey and the time it took. …
So we have reserved almost twenty hours of disposal time for ourselves. According to our previous drills, the average vehicle repair time is about two hours, which means that twenty hours of disposal time can allow us to handle it an average of ten times. accident.
Through continuous testing of the performance of our four vehicles, the chance of ten accidents occurring during this journey is very slim, so we are confident that we will arrive at the scene within the stipulated time. "
Speaking of this, Zhou Xiangming adjusted his tone and said: "Currently, we are trying to increase the speed of the entire convoy to shorten the time spent on the journey. We plan to arrive in almost five days and ten hours, that is to say, only It takes one hundred and thirty hours.
According to the six days and six hours we set before, that is one hundred and fifty hours, shortened by nearly twenty hours. "
"A day on the moon is equal to 27 days, 7 hours, 43 minutes, and 11.47 seconds on the Earth, half of which is daytime, which is thirteen days and sixteen hours
about.
In other words, we need to travel 2,800 kilometers back and forth in thirteen days and sixteen hours, including the time for excavation, transportation and loading of the golden meteorite core.
According to our original plan, the time to get to the destination was six days and six hours, and the return time was about seven days. The total time for this round trip was thirteen days and six hours, which was left to dig and hoist the gold meteorite core. The time is only ten hours, and the time is very tight.
After listening to Zhou Xiangming's introduction, Zhang Jun couldn't help but ask: "Why does it take nearly twenty hours longer to come back than to go?"
Zhang Jun's question made Yu Chengwu, Zhou Xiangming and others smile. Zhang Jun couldn't help but ask: "What, am I asking the wrong question?"
No, no, Yu Chengwu shook his head repeatedly. Zhang Junke is the vice chairman and general manager of the head office. He, the general manager of a subsidiary company, cannot be offended, let alone offended.
He smiled and shook his head and said, "That's right. This return time has been repeatedly verified by experts from our project technical team. The reason why it has been increased by nearly twenty hours is mainly because it takes into account that after loading more than a ton After nearly two tons of golden meteorite cores, the driving speed of the engineering transport vehicle will slow down. Moreover, it cannot travel too fast when carrying such heavy things.
At the same time, as the load increases, the vehicle's cruising distance will also decrease, so the number of charging times will increase. In addition, unexpected situations may occur, so we set the return time at about seven days. "
Speaking of this, Yu Chengwu changed his tone and said: "Of course, this is just a rough estimate, and we cannot accurately estimate how long the entire return journey will take.
Because until now, no one has ever transported an object weighing nearly two tons on the moon and traveled 1,400 kilometers. This can be said to be an unprecedented challenge to the entire human spaceflight technology and extraterrestrial planet detection technology. "
After Yu Chengwu finished speaking, Zhou Xiangming continued: "Actually, the estimated value of this gold meteorite core, which is more than one ton and nearly two tons, is based on the gravity of our earth. Is this convenient for us to understand and calculate?
In fact, the moon's gravity is only about one-sixth that of the earth. That is to say, the gold meteorite core, which is more than one ton and nearly two tons, weighs only one-sixth of the weight on the moon, which is 1.8 tons. By calculation, the weight on the moon is only about 300 kilograms.
But despite this, transporting such heavy items over long distances is still a severe test for the overall performance of the engineering transport vehicle.
Not to mention anything else, even in our country with such developed transportation, it is still very difficult to transport heavy goods on highways, let alone on the moon 380,000 kilometers away, the difficulty is conceivable. And know. "39314128.
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