Bright Sword starts with the grenade flat.

Chapter 181 Feiyan Fighter
Naturally, the above would accept such a request. Of course, purchasing channels and the like were not Liu Xiu's concern.

So after waiting for more than two months, Liu Xiu finally received the jet fighter he needed.

What Liu Xiu didn't expect was that what was sent was not a flying jet fighter but a bunch of jet fighters with tattered bodies.

Of course, although it was shabby, Liu Xiu could still tell what model this fighter was.

Yes, this fighter is the first Me262 jet fighter codenamed Feiyan that was used in actual combat and mass-produced.

It was developed by Germany during World War II. Although it began to be developed in 1938, it was not developed and mass-produced until 44 years.

But at this time, the country was already at the end of its strength, so this advanced jet fighter could not change the situation of the war.

And because it is the first one, it is naturally not that advanced. For example, the performance of the jet engine used in this fighter is not that good.

For example, the Feiyan fighter jet uses two turbojet engines, and the design is also very strange. You must know that the twin-engine fighter jets a few decades later will have two engines placed side by side into the fuselage.

But this Feiyan is hung directly on the wings like ordinary propeller aircraft, which will undoubtedly increase more air resistance.

Of course, Liu Xiu didn't just watch, but cooperated to help Liu Qin. After all, Liu Xiu had double physical strength and practiced martial arts, so it was easy to move hundreds of kilograms of things.

What's more important is that the thrust of the Feiyan fighter's turbojet engine is only 900 kilograms, so even if two of them are used, the thrust cannot match the thrust of one turbojet engine of the Mi-5 fighter.

After all, although Huangya is easy to defend and difficult to attack, its transportation is relatively inconvenient.

Although it is very heavy, the thrust of this turbojet engine is only 900 kilograms, which means that the thrust-to-weight ratio of this engine is only a pitiful 1.2.

You must know that the turbojet engine on this Feiyan aircraft is not light. Its own weight is 1,500 kilograms, which is more than 700 kilograms.

You must know that as Peryoping was acquired, the surrounding factories were also acquired. Although some of the machine tools in them were not as advanced as those in the United States and the Soviet Union, it did not mean that they could not be used.

At this time, in a factory building, Liu Xiuzheng watched Liu Qin put a rusty turbojet engine that had been removed from the aircraft wreckage on the test bench.

Fortunately, Liu Xiu had the dual blessing of system and martial arts, which allowed Liu Xiu to move this engine to the test stand. Otherwise, ordinary people would not be able to do it with four or five units each.

Of course, the wreckage of these flying swallows was not transported to Huangya Airport. Instead, they found a site near Yuping and started to build it.

After all, if the country develops not a Feiyan but a high-speed fighter like the Mi-25 fighter, then maybe the outcome of World War II may really be rewritten!

After all, the thrust of one of them has already reached 2,400 kilograms. In addition, Feiyan's fuselage is relatively bulky, so the final result is that its top speed is only 870 kilometers per hour, which is not as good as the Mustang. This propeller fighter, with a top speed of 700 kilometers per hour, has an absolute speed advantage.

This is really far behind the thrust-to-weight ratio of fighter jet engines that will be in the 80s, 90s, or even 10s a few decades later.

For comparison, take the F35PW135 engine, the engine of the F100 Thunderbolt fighter a few decades later. In fact, the thrust-to-weight ratio can reach without afterburner, and it can directly increase to with afterburner. thrust-to-weight ratio.

However, even the turbojet engine on the MiG-15 is much better than this. Its thrust-to-weight ratio has reached about 3.1, which means that the weight of the MiG-15 engine is only about 800 kilograms. In this way, it can carry more fuel or weapons, or fly faster while ensuring the thrust-to-weight ratio of the entire machine.

Of course, this does not mean that Feiyan's jet engine is useless.

Liu Qin then found a running turbojet engine for static testing.

As Liu Qin increased the throttle to the maximum, the thrust value on the test bench was directly displayed at 910 kilograms, which was not much different from the 900 kilograms in Liu Xiu's memory.

Liu Xiu, on the other hand, looked at the stopped turbojet engine and thought about how to guide Liu Qin to use afterburner.

So Liu Xiu said:

"Dad, the Feiyan aircraft we got this time has been damaged except for the engine and the good fuselage. Why don't we try to use this Feiyan engine to build an aircraft of our own, just like during the Anti-Japanese War? It’s like using a kid’s motorcycle engine to build an airplane!”

Liu Qin also nodded in agreement with Liu Xiu's words. He could give this a try, but then Liu Qin frowned and said:

"The way you said it is good, but you also know that these jet fighters are high-speed fighters, which can reach eight, nine hundred or even thousands of kilometers per hour.

And our wooden fuselage, even with mortise and tenon connections, cannot withstand speeds of more than 700 kilometers. And now our industrial capacity cannot produce aluminum metal, so there is no way to produce the wing skin! "

After Liu Xiu heard Liu Qin's words, he thought about it and decided not to use aluminum materials for fighter planes. After all, aluminum has low density, light weight and good plasticity. However, aluminum has a major shortcoming, which is that it is not heat-resistant and its melting point It's only over 600 degrees.

This shortcoming also means that a metal fuselage with a low melting point made of aluminum or aluminum alloy cannot break through the thermal barrier at all, because the strength of aluminum alloy or aluminum will drop significantly when it approaches 300 degrees, leading to rupture.

Because of this, the famous MiG 25 uses stainless steel to make its fuselage.

Later, although the United States did not learn from the Soviet Union in using bulky stainless steel, it still had high-melting point metals such as titanium alloys to make the fuselages of high-speed fighter aircraft.

Therefore, in Liu Xiu's opinion, it is better to use iron sheets to make the fuselage of the aircraft.

Fortunately, the steel rolling mill needed to produce the iron fuselage had already been established during the Min Kingdom, so it was still the same as before. Liu Xiu had to report to the superiors and let the superiors make arrangements.

Whether the higher-ups agree or not depends on what the higher-ups think.

Of course, in addition to the fact that the fighter planes gave Liu Xiu a headache, there was another thing that made people happy, that is, the grand ceremony worthy of celebration will begin in more than a month.

Of course, there is another thing that only Liu Xiu knows, which is whether the system will come out to give him a reward or something on that day. After all, at the end of the War of Resistance, the system suddenly appeared and gave him a map of friends and foes!

And this time the united front is over, will the system appear again and give him a reward?

(End of this chapter)