Just after the delivery of the Dragonfly helicopter began, the second helicopter of the Eighth Route Army also ushered in an important node off the assembly line.

You must know that this second helicopter is an eleven-ton heavy helicopter, and its name is Hippopotamus, which is still very vivid.

So such an important model rolled off the assembly line, how could the leaders of the Eighth Route Army not come to take a look, and of course, the most important customers, representatives of the Allied Forces, also came to participate in the off-line ceremony.

After all, the Hippo helicopter can be said to be almost specially built for the Allies, and the Eighth Route Army basically does not use it much, and it will be enough to equip a maximum of ten or eight planes at that time, while the Allies have ordered five hundred, and it is only a preliminary order, and it may be increased to several thousand in the future.

After all, the Allies really needed this heavy helicopter too much, whether it was for transport or as an attack aircraft, it was very good.

For example, with a short wing on the outside, you can have four pylons, and it is simply too easy to hit a tank with rockets and cannons, so the Hippo helicopter is indeed very desirable for the Allies.

A Hippopotamus helicopter costs $300,000, and 500 is $150 million.

This is a big deal, that's why the leaders of the Eighth Route Army attach so much importance to it.

The core technology of the Hippo helicopter is a 1,100 kilowatt turboshaft engine, so this cannot be produced by the United States, and only the Eighth Route Army Aircraft Factory can handle it.

Therefore, even if the United States wants to authorize the production, the engine can only be produced in the factory of the Eighth Route Army and then shipped to the United States.

In this era, it is indeed amazing to be able to build a 1,100-kilowatt turboshaft engine.

The turboshaft engine, its core engine is the same as the turbofan engine, except that the power output is through the turboshaft, not the jet.

In Duan Yunpeng's previous life, the world's first turboshaft engine only came out in the fifties, and now he has completed the development of the turboshaft engine ten years ahead of schedule.

The Hippo helicopter with two 1,100 kilowatt turboshaft engines is almost comparable to the later Black Hawk helicopter in terms of performance.

Even a little stronger than the later Soviet Mihachi Hippopotamus helicopters.

Mi-8 helicopter is a 12-ton transport helicopter, it uses the first generation of turboshaft engine in the Soviet Union, successfully developed and mass-produced in the early sixties, this engine output power of 932 kilowatts, Mi-8 main fuel tank oil capacity of 450 liters, two external fuel tanks combined, the total fuel volume of 1,870 liters, when necessary, can also increase auxiliary fuel tanks in the cabin, so that the total fuel volume can reach 3,700 liters.

The Mi-8 can hang rocket launchers on both sides of the fuselage, each containing 16 57-mm rockets, a total of 128 rockets, and can also add a 12.7-mm machine gun to the nose, and can also hang anti-tank missiles on the pylon.

And now the Hippo helicopter of the Eighth Route Army is even stronger in some aspects of performance, such as the flight speed, the hippopotamus has reached 310 kilometers.

In contrast, the later Black Hawk helicopter was more advanced.

The Black Hawk helicopter is an eleven-ton helicopter, so the current hippopotamus can be regarded as the Black Hawk more than twenty years later.

So this time the Hippo helicopter went offline, which really made the allies also very concerned.

Because the appearance of helicopters will change the shape of the battlefield, it can be said that helicopters will become tank killers, and it is even better than attack aircraft.

Therefore, the future use of the Hippo helicopter that came off the assembly line this time is very good.

Duan Yunpeng was very busy during this time, and he had to keep an eye on the final assembly of the Hippo helicopter, because this assembly work was very complicated, and there could be no mistakes, otherwise there would be problems in the test flight.

It can be said that the Hippo helicopter, its significance is no less than that of a long-range bomber, in the helicopter, it is definitely heavy now, of course, in the future, as the helicopter gets bigger and bigger, it will become medium-sized.

Now the world can develop helicopters, only the Eighth Route Army, although Germany and the United States are trying, but it is impossible to reach the level of the hippopotamus, even the dragonfly helicopter they can't develop.

Even if it is developed, it can only use backward piston engines, and the performance is far worse.

If Duan Yunpeng is willing, he can now build a 20-ton heavy helicopter, such as the CH47 Chinugan, which is like a flying carriage, but there is no demand for the Eighth Route Army.

As for the Allies, in fact, it is enough to have hippos.

After all, the German devils don't have helicopters.

In order to welcome the arrival of the leaders and guests, the aircraft factory was busy for a day, making the whole factory extremely festive, and there were colorful flags fluttering everywhere, especially at the off-line ceremony, which hung a lot of propaganda slogans, which looked very powerful.

The two Hippo helicopters have completed the final assembly, and they can be tested at any time, but for the sake of safety, a lot of test work is still required before they can be test-flown .

So when the leaders came to the aircraft factory this time, they couldn't see the hippopotamus test flight.

At about two o'clock in the afternoon, the leaders and senior representatives of the Allied forces arrived, and they came directly by plane.

Therefore, Duan Yunpeng and the others also stepped forward to greet the leading guests.

Everyone happily entered the assembly workshop and saw the two hippopotamus helicopters, the leaders and guests were amazed, this is really a hippopotamus, stronger than a hippopotamus.

The Hippopotamus helicopter is indeed large enough, its length reaches 20 meters, the height is more than 5 meters, and the width of the fuselage is also 2.5 meters, which is equivalent to the width of a passenger car.

So compared to the Dragonfly helicopter that has now been mass-produced, it is one size bigger.

The Dragonfly helicopter can carry 14 people, while the hippopotamus can carry 30 people, which is doubled.

Most importantly, it is capable of lifting 3.5 tons of equipment and supplies.

It is also possible to carry 1.5 tons in the cargo hold.

So it's really too strong to carry it.

Therefore, the senior representatives of the Allied Forces, when they see the Hippo helicopter, it is like seeing a beautiful woman, their eyes are shining, they all want to get the Hippo helicopter, how good it must be if it is put into the battlefield.

Next, the leader of the Eighth Route Army made an important speech at the off-line ceremony, he pointed out that the hippopotamus helicopter will play an important role in the victory of the war, and also hoped that the allies would order more hippo helicopters.

The representative of the allied forces also made a wonderful speech, saying that he was very satisfied with the Hippo helicopter and hoped that the Eighth Route Army would be able to test and fly mass production as soon as possible.

Finally, everyone came to visit the two hippopotamus helicopters, which is really large, and the C47 transport aircraft is one size smaller than the others.

Finally, everyone also took a group photo in front of the two hippopotamus helicopters.

Of course, there are also reporters from several major international newspapers who came this time, and I believe that it will not be long before the news of the Hippo helicopter off the assembly line will spread all over the world.