Super Weapon Swap System

The engines of helicopters do not have the silencer of cars, and it is impossible to have it. The exhaust gas discharged also has thousands of degrees. What silencer can withstand the continuous test under this temperature. Therefore, almost all of them are discharged directly after burning in the combustion chamber.

Only the marine gas turbine transformed by the Navy will have a flue. After all, firebricks can be used in that place.

But helicopters can't.

Black smoke came out from the top of the dolphin helicopter. It was a situation that the fuel injected by the engine could not be completely burned. The smoke rolled and almost called the fire engine.

It looks like the engine is on fire.

If only it could be lit, the problem now is that it can't be lit!

No matter what kind of engine, the principle is almost the same. Blow in the wind, then light the fire, and then provide power.

Then, when different air is blown in, the fuel required for ignition is also different. In this plateau, the air is thin and the oxygen content is small, so the fuel to be injected is less, so that it can be fully burned. However, the dolphin helicopter has not been tested on the plateau, so it still injects oil at low altitude, which leads to a situation.

Fuel was injected, but there was not enough oxygen.

It is true that fuel can burn, but a considerable part of it cannot be fully burned and becomes black smoke. Together with this black smoke, it extinguishes the fuel that has just been lit.

This is the carbon dioxide fire extinguisher!

The engine was blaring overhead, and black smoke kept coming out, but it just couldn't light!

It lasted for half a minute. The pilot reluctantly stopped his common sense. The battery was in an absolute power loss state and could no longer be started.

What should I do?

Dismantle the battery, charge it, and then recharge it when it is fully charged.

Now, the morning time is gone.

At that time, when the aviation troops of the Han Dynasty decided to station at the Plateau Airport, they actually experienced such a process. In order to start the engine at high altitude, we gradually tried, one thousand meters, two thousand meters, constantly raising the altitude and accumulating experience, so that they could finally deploy here.

Now, without experience, it is difficult to start at an altitude of more than 3000 meters.

This is different from starting in the air, because when starting in the air, the aircraft has speed and can rush into the engine for more air. At the same time, the engine can also rotate by air impact, which is completely different from starting on the ground. Chicken country's first attempt was the first to fail. The pilot came down dejected and looked here.

Hum, our can't start successfully. You're no better!

Next to them is the bell 212 helicopter, which is arranged in the order of yesterday. When the chicken pilot looked helplessly here, he was very angry. Sure enough, the eagle people were more cunning!

Wind direction.

On the plateau, the wind is very strong. When the eagle pilot docked the helicopter, he was just in the leeward and was blocked by his own helicopter. The other party's helicopter was not as powerful as his own.

Take advantage of this little bargain. Let's see if you can start it smoothly!

Later, I heard the characteristic whistling of the starter of the same turboshaft engine. But when he heard it, he looked very ugly.

Cheat, cheat!

Bell 212 is a five ton helicopter. Because of its larger fuselage, it carries more equipment. For example, it can bring APU!

APU, called auxiliary power unit, refers to a small auxiliary power unit that can independently output compressed air or power supply in addition to the main power unit on the aircraft. Usually small gas turbine engines.

It includes power output shaft, compressed air extraction device and automatic control device.

Before takeoff, it provides compressed air for the aircraft, which can be used to supply air to the aircraft's air conditioning system or provide air source for the main engine starter. It can also output power to the aircraft power system before the main engine is started, so as to reduce the aircraft's dependence on airport equipment.

With this device, you can start the engine calmly! Although the energy of the helicopter battery is limited, as long as the APU is started, the power is unlimited. Even if it is started ten or eight times, there is no need to worry about power loss.

At the same time, in addition to its function before takeoff, this device can provide emergency energy to the aircraft and improve flight safety when the main engine or its power generation device fails in flight; When landing, it can also provide energy for the aircraft.

However, this thing is not available in any aircraft. Generally speaking, it is only in large and medium-sized aircraft and large helicopters that auxiliary power devices are installed.

The other party's bell 212 is a five ton helicopter. It's barely a medium-sized helicopter. It's also installed with this device. Isn't this cheating? What's it?

Among the black smoke, it was started three times in succession, and the APU was finally started. When the black smoke emitted by the APU gradually faded and finally disappeared, the chicken people were very uncomfortable.

Bell company is definitely well prepared! At least they won't be eliminated in the first stage.

There is no suspense about the start of the bell 212 helicopter, and the remaining two are really on their own.

It is a common phenomenon that the capacity of battery will decrease in severe cold weather. (if you ride a battery car, you will find that the distance you run in winter is much lower than that in summer. That's why.)

Then, if you want to increase the performance in severe cold weather, especially on the plateau, increase the capacity of the battery!

The A109 of noodle country is a real skill. It starts with its own power without any APU. At the same time, it is also because their engine has built-in new programs. It is not easy to start in high-altitude areas, because there are too many fuel injections, so it is set in advance and less fuel injections!

As for the Black Hawk helicopter, it had built-in APU, not specifically cheating for the plateau test.

The roar of the engine sounded one by one. The rotors on the top of the two helicopters were rotating and had been put into normal operation.

The helicopter has no clutch. As soon as the engine rotates, the propeller will rotate with it.

Chicken people are staring. They can't even participate in the next project. Are they eliminated now?

If everyone fails to start successfully, it is still standing on the same starting line. Now, they are ashamed of themselves.