One helicopter after another, the propeller on the top rotates, which means that we can carry out the next flight test.

Take off, determine the maximum altitude!

This flight is impossible. There are only two people on each plane. At this time, they sit in their seats and feel warmer with the flow of heating.

Then, pull it up!

On the bell 212 helicopter, the pilot slowly raised the total torque.

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

Simply take the electric fan as an example. The blades of the electric fan are inclined. If the blades of the electric fan are flattened, it will not be able to blow. If the inclination angle of the blades is gradually changed, the fan blowing can gradually increase, and the same is true on helicopters.

When it was just started, the blades of the helicopter were flat. In this way, although there was wind, the force of the wind was not large enough, and it was certainly impossible for the helicopter to fly.

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

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

When the pilot lifts the rod with his left hand, the automatic tilter will rise as a whole and increase the total pitch of rotor blades, that is, the pitch of all blades will increase at the same time at the same angle, so as to increase the rotor tension, otherwise the tension will decrease, so as to control the lifting movement of the helicopter.

Usually, a rotary throttle control mechanism is set on the handle of the total distance control lever to adjust the size of the engine throttle, so as to adapt the engine output power to the required power of the rotor after the total distance of the rotor blades changes. Therefore, the control lever is also known as the total distance throttle lever.

Now, the pilot of bell 212 helicopter slowly raises the total moment. As he pulls up the total moment lever, he can hear the roar of the engine at the top getting louder. At the same time, the propeller pitch gets bigger, resulting in a sharper scream.

If it is on the flat ground, 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.

His heart immediately secretly complained. Then, he continued to pull up the total torque. His side could fly up yesterday. Can't he fly up today?

He didn't know that this morning, when the air pressure was the lowest here, and when he flew over yesterday, he was careless. Now, it's even worse.

The total moment finally mentioned the head. The rotor on the top of the helicopter has shown its greatest ability, but it is still there and can't move.

"Damn it, what's going on?" the pilot couldn't help cursing, "this is hell!"

At his side, the co pilot looked nervously at the various instruments in front of him 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 reduction of oxygen content in the air, although his engine started, the power was less than half that of the plain!

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

The pilot finally gave up. If half the power was left, it would not be easy to fly on the plain, let alone on the plateau.

damn!

The first one to be eliminated is the dolphin helicopter, and the second one to be eliminated is Baer 212. If it comes before coming, it will be possible to adjust the engine program and replace the more powerful engine, but now? It only adds an additional starting device and is about to bid. The result is obvious.

At this time, the chicken people are finally happy. What if you can start it? Can't fly yet?

See if those two helicopters can fly!

The two crew members were unhappy. Looking at the other two helicopters, they saw the last A109 helicopter. In the roar of pulling the total moment, the fuselage shook and gently flew up from the apron!

Yes, A109 is flying!

For this highland helicopter bidding, it has enhanced the power of the engine, increased the power by half, and the body is lighter. Of course, there is no problem taking off!

The propeller was whirring, and the helicopter was steadily pulled up from the ground, which surprised Qin Guan. I didn't expect that the Chinese people of noodles fought hard for the bidding, and even got out the plateau model of this aircraft in advance!

It's hard to do now. Originally, the Black Hawk helicopter was used in our plan. After all, it is a ten ton helicopter with strong carrying capacity, while A109 is a three ton helicopter. If the helicopter finally wins the bidding, although we have a helicopter on the plateau, the 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 eagle helicopter also got up.

If the A109 helicopter is specially replaced with a high-power engine for this bidding, 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 kW, which can be converted into 1560 shaft horsepower, so we can know how abundant its power is. Its single engine is equivalent to the power of A109 dual engine, and also equivalent to the power of bell 212 three engines.

In addition to abundant power, this engine also has excellent performance. After all the lubricating oil leaks, the engine can run for half an hour. A t62t-40-1 auxiliary power unit APU of 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 excellent, driving the helicopter to the sky.

Only these two helicopters are left for various competitions.

Altitude test, this test is not only reported by the pilot himself, but also by the radar in the base. They can't cheat.

The pilots of chicken country and noodle country reluctantly followed them to the tower and listened to the sound inside.

"Climb to 5000 meters."

Since the altitude is close to 4000 meters, the first climbing height is 5000 meters.

On the radar screen, two bright spots flicker and climb up gradually.

"Climb to six kilometers."

"Climb to 6500 meters."

Listening to the sound, the pilots of Jiguo shook their heads. Even if they could start the engine, they would never fly so high. They just came from soy sauce.

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