For a helicopter, the propellers on the top are all spinning. For everyone, this means that the next flight test is ready.

Take off and determine the maximum ascent!

This time, it was impossible to do hands and feet. There were only two people on each plane. At this time, they sat in the seats and felt warmer as the heating flowed.

Then, it was pulled up!

On the Bell 212 helicopter, the pilot slowly raised the total moment.

The control of a helicopter is different from that of a fixed-wing aircraft. This total moment is a unique device for helicopters. The ability of a helicopter to fly is mainly the propeller on its top. How can these four propellers stir the wind?

Simply take an electric fan. The fan blades of the electric fan are inclined. If the fan blades of the electric fan are flattened, it will not be able to blow. If the inclination angle of the fan blades is gradually changed, the blowing of the fan blades can gradually increase. It's the same on a helicopter.

When the helicopter was just started, the blades of the helicopter were flat. In this way, although there is wind, the force of this wind is not strong enough to make the helicopter fly.

Can’t the helicopter just get up as soon as the engine starts? How does it land?

The total distance joystick is generally arranged on the left side of the driver's seat and rotates up and down around the axis of the support.

When the driver lifts the lever on the left hand, the automatic tilter is raised as a whole to increase the total pitch of the rotor blades, that is, the pitches of all the blades are increased by the same angle at the same time, so that the pulling force of the rotor increases, and vice versa. This is to control the lifting movement of the helicopter.

A rotary throttle control mechanism is usually set on the handle of the collective pitch control lever to adjust the size of the engine throttle so that the engine output power can be adapted to the required power of the rotor after the total pitch of the rotor blade is changed. Therefore, the joystick is also called the overall throttle stick.

Now, the pilot on the Bell 212 helicopter slowly raises the total moment. As he pulls the total moment rod upwards, he can hear the roar of the engine on the top become louder. At the same time, the propeller pitch becomes larger, resulting in A sharper scream.

If it is on flat ground, then the helicopter should have taken off at this time. Now, the total moment has been raised by more than half, and the helicopter still has no response.

He suddenly murmured in his heart, and then continued to pull up the total moment. Yesterday, he could fly up. Could it be that he couldn't fly today?

How did he know that this morning, it was when the air pressure was lowest here, and when it flew over yesterday, it was so-so. Now, it is even worse.

The total moment, finally mentioned the head, the rotor on the top of the helicopter has already displayed the greatest ability, but it is still there, not moving.

"Damn it, what's going on?" The pilot couldn't help cursing: "This is hell!"

On his side, the co-pilot looked nervously at the various instruments in front, and said: "The engine power is seriously insufficient, only half of the usual!"

Hearing this, he was completely disappointed. Due to the low air pressure and the lower oxygen content in the air, although his engine started, the power was actually less than half of the plain!

If you fly up and fly forward, you can inhale more oxygen, but now it’s not so easy to pull the onions on dry land on flat ground.

The pilot finally gave up. If half of the power is left, it will not be easy to fly on the plains, let alone on the plateau.

Damn it!

The first one to be eliminated is the Dolphin helicopter, and the second one to be eliminated is Bell 212. If it adjusts the engine program before it comes, it is still possible to replace it with a more powerful engine, but now What? It only adds an additional starting device and is about to bid. The result is obvious.

At this time, the Jigoku people are finally happy, how can you start? Can't fly yet?

See if those two helicopters can fly!

The crew members of the two groups were gloomy. They looked at the other two helicopters, but saw the last A109 helicopter that arrived. The fuselage swayed amid the screams of the total moment, and it flew gently from the apron!

That's right, A109 is flying!

For this high-altitude helicopter bid, it has increased the power of the engine, a full increase of half of the power, and the body is lighter, of course it is no problem to take off!

The propeller was turning whirring, and the helicopter pulled up steadily from the ground, which made Qin Guan also overjoyed. I really didn’t expect that the noodle countrymen would fight for the bidding, and they would actually get the plateau model of this kind of plane ahead of time!

This is difficult to do. Originally, my plan was to use the Black Hawk helicopter. After all, this is a ten-ton helicopter with a strong carrying capacity, while the A109 is a three-ton helicopter. If this helicopter is the final bid, If it succeeds, even though it has a helicopter on the plateau, its transportation capacity is not strong enough.

If you purchase both, will your helicopter product line be too large?

In Qin Guan's thinking, the Black Hawk helicopter also got up.

If the A109 helicopter is a high-power engine specially replaced for this bid, then the Black Hawk itself has a large power reserve.

UH-60A is equipped with two General Electric T700-GE-700 turboshaft engines, with a single power of 1165 kilowatts, which is converted into 1560 shaft horsepower. This shows how abundant its power is. Its single engine is equivalent to The power of the dual-engine A109 is equivalent to that of the three Bell 212 engines.

In addition to abundant power, this engine has outstanding performance. After all the oil leaks, the engine can run for half an hour. A T62T-40-1 auxiliary power unit APU from Sun Turbine Company is installed between the two engines to start the engine and serve as ground auxiliary power.

Although the empty weight is five tons, its power is extremely good, driving the helicopter to the sky.

Only these two helicopters are left for various contests.

Altitude test. This test is not only done by the pilots reporting the altimeter, but also by the radar inside the base. They cannot cheat.

The pilots from the chicken country and the noodle country reluctantly followed to the tower, listening to the sound inside.

"Climb to five kilometers."

Since the altitude was close to four kilometers, the first climb altitude was five kilometers.

On the radar screen, two bright spots flickered and gradually climbed upwards.

"Climb to six kilometers."

"Climb to six thousand five hundred meters."

Hearing the sound, the pilot of Jiguo shook his head. Even if they could start the engine, they would definitely not be able to fly so high. They just came with soy sauce.