Zhang Zian did not say anything for the time being. He had been thinking about a solution that would satisfy both sides. It would be great if he could find a safe way to preserve everyone's strength.
But he could not think of a better way.
The method to safely cross the sand ridge was proposed by Professor Wei Kang last night. When Peter Lee's team provided free access to the satellite Internet, everyone else was chatting or writing emails. Zhang Zian searched the Internet for the method proposed by Wei Kang. After all, it was a matter of safety. He could not blindly follow.
As a result, he found that the method proposed by Wei Kang was not original. It was the common practice of oil exploration workers in the desert.
This was troublesome, very troublesome.
The method that oil exploration workers summed up through practice and exploration must be the crystallization of experience and wisdom.
The wisdom of the people was infinite. Just by himself, entering the desert for the first time, how could he have the confidence to come up with a better solution?
The oil exploration workers could use this method because their physical strength, willpower, and endurance were far beyond the level of ordinary people. The expedition team could not compare to them. Even Peter Lee's team could not compare to them.
Therefore, this method might not necessarily apply to his own team. At least, it could not be copied exactly the same.
Zhang Zian's eyes glanced at the suitcase containing the drone.
Could he use the drone to improve one of the links?
If he used the drone to fly in the air and look down at the terrain and find the place where the slope was gentle, would everyone not have to climb the sand dunes themselves?
He thought about it and felt that this method seemed to have a certain degree of feasibility.
The drone could not completely replace the human eye, because the human eye produced three-dimensional vision. Walking on the sand ridge, whether the slope was gentle or not could be seen at a glance. The drone needed to find a suitable angle and height to fly along the sand ridge. The visual judgment of the slope might not be very accurate, but it could save everyone from running around. If you could use your brain, don't use your feet.
"Wait, don't argue. I have a suggestion."
When he was almost done thinking, he expressed his idea in the public channel of the walkie-talkie.
Other than Nabari and Salem, everyone else was highly educated. They understood what he meant as soon as they heard it.
"You also brought a drone?" Peter Lee said with surprise.
"Yes!" Wei Kang's tone was full of excitement. "This is a great idea! I don't think it's a problem. Although the drone might not be able to find the most gentle slope, it's fine as long as it's relatively gentle. "
Peter Lee sighed with regret. "We also brought a drone, but it was seized by customs when we entered the country. They said it was dangerous and couldn't be brought into the country."
The severe anti-terrorism situation in Egypt made the customs very strict on the control of drones. If it was a toy drone, it would be fine. If it was a high-performance drone, the authorities were very worried that it would be used to carry out terrorist acts.
The expedition team was able to successfully bring the drone in because they had a formal document stamped by Binhai University and an official invitation from Cairo University. Peter Lee and his gang did not have these procedures. It was not surprising that their drone had been detained by customs.
Everyone thought that this method was feasible, and the atmosphere of the public channel, which was originally full of gunpowder, was reversed. Several people even half-jokingly complained to Zhang Zian about why they hadn't thought of this before, causing everyone to have to climb a sand dune with their hands and feet.
Zhang Zian wasn't sure if the drone could withstand the high temperature and direct sunlight for a long time. He was worried that it would damage the drone.
Wei Kang wasn't sure either, but now was not the time to consider this. Between the possibility of the team being split, the loss of morale, and the drone being damaged, he could only choose the latter.
Zhang Zian got out of the car, opened the suitcase on the hot hood, and began to assemble the drone under the scorching sun.
Everyone was praying that this method would succeed. Otherwise, it would be too much of a blow to their morale, and they would be faced with disappointment just as they had hope.
The battery was full, the components were well maintained, and the drone's self-inspection was normal.
On the wings of the drone, "Nekhbet" was written in marker. This was the name given by Fina. It was the goddess of the sky in ancient Egyptian mythology, a female falcon.
Hopefully, it could really rule the sky like its name.
Zhang Zian returned to the car with the remote control and gave the command to take off.
Nekhbet's four propellers rotated at high speed, and it flew briskly into the sky, reflecting the silver light of the sun.
Everyone in the convoy raised their heads and stared at its flight path without blinking.
"Xiao Zhang, steady! Don't fly too low! "Wei Kang reminded him through the walkie-talkie, sweating for the drone.
"I know. Don't worry."
Zhang Zian calmly controlled the drone to fly directly above the sand dune, and the screen of the remote control showed the real-time image taken by the drone.
"The drop here is very big. Fortunately, we didn't take the risk of driving directly up …"
Seeing the scene behind the sand dune, he took a deep breath. Because the sand dune was facing them with the windward side, although it was high, the slope was not too exaggerated. That was why the expedition team had the idea of directly rushing up. However, the leeward side of the sand dune was often steeper than the windward side.
Although there was no way to accurately measure it, the angle of the leeward side of the sand dune was about 30 degrees.
At first glance, 30 degrees did not sound high, but in fact, it was quite steep. The maximum angle at which the sand could remain stationary on the sand dune was about 35 degrees. A sand dune at a 30-degree angle could not be compared to a paved road at a 30-degree angle. The tires could not withstand the force on the sand ridge. If the vehicle crossed the sand ridge at a slightly faster speed, it would directly fly out, somersault, and plunge into the sand.
Zhang Zian operated the drone to maintain a fixed altitude, flying horizontally along the sand ridge. He let the camera look down at a 45-degree angle, looking for a suitable place to cross.
After flying for a few minutes, the drone flew over several alternative locations.
Although the desert environment was open and undisturbed, and the remote control distance was very long, Zhang Zian did not dare to let it fly too far. When it was almost there, he let it return the way it came. On the way back, he observed the alternative locations again, and then chose the one that was the smoothest visually. He let the drone hover over there as a mark.
Zhang Zian sent a signal through the walkie-talkie. Everyone started the car and drove towards the location of the drone.
When everyone was in place, he quickly let Nekhbet land and put it back into the car. At this time, its shell was so hot that it could blister his hands, and the battery was so hot that he was worried if it would suddenly explode.
He described the situation on the other side of the sand dune verbally, so that everyone had a sense of what was going on. Then, he set an example and took the lead in driving over the sand dune.
The other cars also successfully crossed the sand dune.
With the help of the powerful drone, the most troublesome problem so far had finally been solved.
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