There was a huge tiger roar coming from the mountain before, and they were so worried because of the roar. They didn’t expect that the owner of the tiger roar was standing in front of them now, and his figure was as big as a small mountain. Isn’t it too terrifying?
“It, it…”
Han Qingsong didn't know what to say to express his shock for a moment. He was not only shocked by the tiger's shape, but even more shocked by the fact that the tiger could change its shape at will. It was just like a monster in a fairy tale drama. This shocked him more than the end of the world!
"It's not a monster!"
Su Leyan knew what they were thinking, but although Zhanhu could change its shape, it was not a monster. However, if it continued to evolve, who knew if there would be any surprises later!
"But?"
Han Qingsong's eyes were full of shock. If it wasn't a monster, how could it change its shape?
"Zombies and mutants have appeared. What's the big deal about mutant beasts? They just have certain abilities. The end of the world is originally a biological evolution. There will be more such things in the future!"
They couldn't help swallowing their saliva, looked at Zhan Hu in front of them, and then looked at the calm Miss Su in front of them, and couldn't help thinking that Miss Su was really a capable person!
Feeling the fear in their hearts, Zhan Hu's eyes flashed with pride. He shrank his body and turned back into the cute little tiger. He jumped into Su Leyan's arms, rubbed her hand affectionately, and looked very cocky. This look shocked everyone present.
It is said that after the founding of the People's Republic of China, no spirits are allowed to become spirits. Now that it is the end of the world, I am afraid that all the spirits in the world will become spirits. So what kind of world is this?
"Miss Su, the chief is calling!"
"What's wrong?"
She knew that the helicopter flying to Guangyun Mountain yesterday was attacked by birds, so it crashed directly and none of the people sent to rescue were spared. Could it be that something went wrong today as well?
Han Qingsong's face was solemn. "Those birds seem to be an organized attack helicopter. The commander told us to wait a day or two!"
Su Leyan thought for a moment and asked, "Does the Military Research Institute have helicopters?"
Han Qingsong was stunned by the question, then nodded hesitantly and explained, "The Military Research Institute does have a helicopter, but that helicopter was independently developed by the Military Research Institute. It has already taken shape, but it seems to be unfinished. Before the apocalypse, the helicopter has been stored in Warehouse No. 10 of the Military Research Institute!"
"It's not finished yet, so it should be impossible to open it!"
He could fly a helicopter, but it wasn't finished yet, and this was no joke.
Su Leyan thought for a moment and said, "Take me over to have a look!"
The birds' organized attack must be controlled by strange beasts or spiritual zombies. Instead of letting them take risks, it is better for them to save themselves. After all, if they do it themselves, they can have enough food and clothing!
Han Qingsong hesitated for a while, but finally nodded in agreement. Although he didn't think Su Leyan could complete the rest of the research on the helicopter, it wasn't impossible for her to give it a try if Miss Su was willing to give it a try!
"Gao Jianwei!"
"arrive!"
"I'll take Miss Su to Warehouse No. 10. You protect Professor Yang and the others in the lab. Tell them that Miss Su is back and there's no need to worry!"
"yes!"
Han Qingsong had not taken Su Leyan to Warehouse No. 10 before because the helicopter was too big. Even if the space hub was larger, it would be impossible to accommodate a helicopter, let alone a helicopter that had not yet been successfully developed.
Seeing the helicopter, Su Leyan smiled. He didn't know if it was a coincidence, but it turned out to be a transport helicopter. Judging from its appearance, it had quite a lot of space, so it could be well modified.
"Miss Su?"
Su Leyan nodded and clapped his hands. "Call Commander Zhang and tell him that he doesn't need to send anyone over. This helicopter can be modified to carry more than 200 people without any problem!"
"?"
Han Qingsong was shocked. A normal transport helicopter could only carry more than a hundred people at most. The most important thing was that the helicopter had to be able to fly.
This helicopter is still under research, not to mention it has never been test flown. Miss Su said that it could be modified to bring all of them back. It's not that he doesn't believe it, but it's really unlikely!
"Ms. Su, this helicopter is the latest model of transport aircraft developed by the Military Research Institute. It hasn't been successfully developed yet. It's still missing some parts, and the core part hasn't been assembled yet..."
Looking at Han Qingsong who was hesitant to speak, how could she not understand Han Qingsong's worries? However, this matter was just a piece of cake for her. There were so many instruments and spare parts in the warehouse, and there was no problem in assembling it. Besides, this helicopter was already a semi-finished product. If the semi-finished product could not be completed, she could just go back to the furnace and rebuild it!
"Can I move anything in here?"
Han Qingsong was stunned. It seemed that all his words were in vain. Did Miss Su really intend to do it herself?
Did he stop it or?
However, looking at Miss Su who had already started to take action, Han Qingsong said, "It's up to you!"
"Can!"
The key to a helicopter lies in its rotor. The rotating rotor, through relative motion with the air, enables a stationary helicopter to generate sufficient aerodynamic lift, enabling it to take off and land vertically.
However, while the rotor cuts through the air to generate lift during rotation, it also produces counter-torque on the fuselage. If this is not restrained, the helicopter will spin in the air and will not be able to fly normally.
Conventional helicopters use a tail rotor to offset the anti-torque of the rotor. The problem is that the power consumed by the tail rotor and the resistance it brings have no effect on propulsion and lift, and are purely for maintaining flight stability.
The tail rotor cannot be too large, otherwise it will easily touch the ground or get caught on wires, branches or other obstacles. A smaller tail rotor can only provide sufficient anti-torque by increasing the speed, which becomes a significant source of helicopter noise.
The faster the helicopter is, or the heavier its takeoff weight is, the more problematic the tail rotor becomes.
Coaxial, counter-rotating rotors can counteract each other's counter-torque, but the sleeve shaft is not only mechanically complex, bringing a series of design, manufacturing, and reliability issues, but also requires sufficient spacing between the upper and lower rotors to prevent the elastic rotors from colliding with each other. This not only causes a loss of lift but also increases headwind drag. Placing a pair of counter-rotating rotors laterally at each end of the wing, like carrying a shoulder pole, can also achieve the goal of counter-torque, but the wide distance between the rotors poses a challenge to roll stability, easily leading to instability in uneven ground effect or strong crosswinds.
Apart from these, the most important thing is the engine.
Almost everything that needed to be dismantled had been dismantled. After looking at it, she finally understood why this helicopter had not been successfully developed yet. It seemed that it was stuck with the engine.
Entering the 21st century, the development of aircraft engines is accelerating further, which will bring new major changes to the field of human aviation.
Continue read on readnovelmtl.com
