After locking the current problems, Mu Feng immediately opened several scientific research plans through the system.

The first is to determine the compatibility of the reactive destructive element with the missile armor-piercing warhead and the electromagnetic gun warhead.

At the same time, on the basis of this material, it redesigned its own existing warheads for anti-ship missiles and cruise missiles.

Then, Mu Feng took a deep breath and came to the interface of the high-level loot lottery.

This time, he killed Deep Sea Mutsu and Deep Sea Yamato, a secondary deep sea flagship, and a special deep sea flagship, for a total of 300 high-level loot.

The high-level loot lottery is almost always the product of the scientific research system, and it is the latest, the most sophisticated, and even the product under development.

All in all, it's all good.

adjusted his breathing and mentality, pressed the first draw, and the picture in front of him flashed a few times, and finally stopped:

"Acquisition: Variable Cycle Engine Technology."

Mu Feng looked at this result and was stunned for a moment.

"Variable cycle engine...... This technology ......"

To understand the principle and function of a variable-cycle engine, it is necessary to first understand the basic principles of existing turbofan engines.

The engine used in today's fighter jets is a turbofan engine, which has an important attribute, that is, the "bypass ratio"

The structure of this engine, to describe it in the simplest terms, is two tubes of different thicknesses that are set together.

Since the thickness of these two pipes is different, there must be a certain gap in the middle after they are put together.

In this way, the gap between the two layers of pipes, together with the gap between the thin tubes inside, creates two channels through which air can pass.

The passage in the middle of the inner pipe is the "connotation road", and the gap between the two layers of pipes is the "outer duct".

The proportion of air flow that can pass through the two-layer passage of the outer duct and the inner duct is the so-called "duct ratio".

The Inner Dao expands by igniting the air and spews it backwards, forming a forward propulsion.

As the hot air is ejected backwards, the turbine is pushed to rotate, causing the fan in front of the tube to rotate.

The wind that the fan blows backwards and sprays backwards through the outer duct to form a forward propulsion.

To sum up, the thrust of a turbofan engine can be divided into two parts, the inner duct ignites the jet, and the duct fan blows the air.

When the duct is infinitely smaller, that is, there is no outer duct to blow the air, and there is only a gas jet, this kind of engine is called a "turbojet engine", referred to as a turbojet engine.

Turbojet engine is a commonly used engine for second-generation aircraft, with the typical characteristics of second-generation aircraft, suitable for high-altitude and high-speed, but the consumption is also very large, and the range of second-generation aircraft is generally much lower than that of third-generation aircraft.

If the duct is larger than infinity, that is, the inner duct is infinitely small, the outer duct is infinitely large, and there is no outer layer of pipe, and the entire external space is an external duct, then it becomes a "turboprop engine", referred to as a "turboprop" engine.

Turboprop engines, generally small and medium-sized transport aircraft, early warning aircraft engines, have the characteristics of propeller aircraft, slow speed, but low consumption.

The result is:

The larger the bypass ratio, the more suitable it is for low-speed flight.

The smaller the bypass ratio, the more suitable it is for high-speed flight.

The speed of fighter jets is usually always changing, generally there are cruising speed, maximum speed, take-off and landing speed, etc., and the fourth-generation aircraft also has subsonic cruise and supersonic cruise two cruising speeds.

And the bypass ratio of the fighter engine has always been fixed, so it is impossible to adapt to flying at different speeds at the same time.

Today's fighters are able to achieve maximum range only if they have an optimal energy consumption ratio only in a relatively fixed speed range.

In most other cases, the energy consumption ratio is not cost-effective and cannot reach the maximum range.

The variable cycle engine is aimed at solving this problem, it is an engine that can adjust the bypass ratio.

Let the fighter increase the bypass ratio when cruising at low speed, and reduce the bypass ratio when attacking at high speed.

This allows the fighter to achieve the optimal energy consumption ratio regardless of the speed at which it flies.

Without increasing fuel, the range and combat radius of the fighter were again increased.

At the same time, the shape design of the fighter, the most important of which is the sweep angle of the wing, also affects the most suitable flight speed.

The lower the rear angle, the more suitable it is for low speeds, and the larger the sweep angle, the more suitable it is for high speeds.

However, the wing sweep angle of most aircraft is fixed, and only the variable sweep wing aircraft can adjust the rear angle to adapt to different flight speeds.

Such characteristics make many people believe that the combination of a variable-sweep wing fighter and a variable-cycle engine is the most perfect combination of carrier-based fighters.

Mu Feng has reason to believe that if the variable-cycle engine is replaced, the maximum range should be able to exceed 8,000 kilometers without increasing fuel, squeezing out the last bit of energy of this aircraft.

So Mufeng immediately opened a scientific research program to combine the newly obtained variable cycle engine technology with the existing turbofan 15 vector version to develop the next generation of fighter engines.

Then continue the lottery, there are 200 high-level loot, I don't know what rewards I will get, Mu Feng is also quite looking forward to it.

I took another deep breath, adjusted my mentality, and pressed the draw button.

"Obtained: YJ-20 Shipborne Hypersonic Anti-Ship Ballistic Missile Production Drawings."

Mu Feng opened his mouth again, this is the next generation of anti-ship missiles, a specially designed ship-based version of the anti-ship ballistic missile, which is also a really good thing.

Many people have been thinking about the Dongfeng 21D on the ship, but the Dongfeng 21D was originally developed on the basis of the Julang 1, the foundation is quite old, and the size is huge, and it is not suitable for direct installation on the warship.

The Navy wants anti-ship ballistic missiles, but the most demanding Navy will not change on the basis of the Dongfeng 21D.

Rather, like the "35 bombs", a brand-new target is set, a new research and development is required, and the most advanced ballistic missile technologies such as wave-riding bodies, "water-drifting ballistics", and hypersonic speed must be applied, so there is the YJ-20.

Mu Feng immediately clicked on it and looked at the specific parameters of this missile.

This is a vertical missile, the size of the missile body, that is, the existing 9 meters deep, 850 mm diameter of the general vertical system design, after folding the wings, just can be put down, no longer waste space, the existing 052D, 055 vertical hair can be installed.

Take a high-altitude "water drifting ballistic", with a maximum range of 1,000 kilometers and a maximum speed of 10 times the speed of sound.

The so-called water drifting trajectory is actually very easy to understand, just like a stone hitting water on the water surface, this kind of warhead has to "hit the water" at the edge of the atmosphere, up and down, and glide on the waves, so it can greatly increase the maximum range.

Therefore, it is possible to achieve a maximum range of 1,000 kilometers under the size of conventional shipborne missiles.

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