This civilization is very strong, but the technology tree is a bit crooked

"40 points of energy attributes are enough."

Chen Yi checked the propeller properties after connecting the power battery.

Hurrah!

Colorful rays of light bloom.

Ion thrusters and power batteries that completely cover the tabletop.

The properties of the ion propulsion are being adjusted rapidly, and the shape and form are constantly changing.

After half a minute, the light dissipated.

The original bulky and large power battery has disappeared, replaced by a battery the size of a thermos cup.

The original simple and outrageous can propeller has also undergone earth-shaking changes.

The surface of the cylinder is covered with various modules and capacitors.

On one side is the air intake channel like an aircraft engine, and the special turbofan blades have some special dents printed on the surface like golf balls.

On the other side is a nozzle that shrinks inward, just like a normal turbojet engine.

From the appearance alone, people who don't know will think that this is a turbofan combustion jet engine.

But only Chen Yi knew it.

This is not a turbofan combustion jet engine.

This is the turbofan ion propulsion engine.

Burning chambers inside jet engines, this has been replaced by accelerating electric and magnetic fields.

The original way of burning and expanding to do work has also become the ion propulsion of the electric field.

[Item: Turbofan Ion Propulsion Engine (Atmospheric Type)]

[Attributes: Energy x3.2, Strength x3.2, Quality x3.1, Speed ​​x30.1, Efficiency x3.2, Control x3.2, Beauty x3.5...]

[Wave of Consciousness: 7228203]

[Detecting that a certain attribute exceeds the initial value, do you want to read the information? whether! 】

[Note: This is an ingenious engine design that combines turbofan jet + ion propulsion, replacing combustion propulsion with ion electric propulsion. If chemical energy is exhausted one day, it will be the best turbofan engine. 】

"The exhaustion of chemical energy is the best engine"

"So it's not as good as a turbofan combustion jet engine right now?"

Chen Yi saw the hidden meaning of the comments.

As for the speed attribute of 30 points, it was not as good as the turbofan combustion engine, which did not surprise Chen Yi.

After experiencing the manufacture of EEG virtual consciousness machines, he knew it a long time ago.

Different types of items, the same attribute, weight and performance will be different, even very different.

Ion propulsion engines, and chemical combustion propulsion engines.

Although they are both called engines, their principles and types are quite different.

"Test it to see how the thrust is and how the thrust-to-weight ratio is."

Chen Yi didn't rush to read the information, but tried to lift the ion thruster.

A little heavy.

About 40 kg.

Without using a forklift, Chen Yi lifted the propeller to the side scale.

After some weighing, the mass of the thruster was determined.

39.86 kg.

"This weight is a bit heavy, and the thrust-to-weight ratio may be a bit high."

Chen Yi moved the thruster to a separate test area on one side.

Fix the propeller on the test bench for testing the engine thrust, and then open the front shutter doors in the direction of air intake and jet.

Hit the switch.

When the lights came on, the originally quiet intake turbofan began to spin.

The speed of the turbofan is not fast. The instrument for measuring the number of revolutions shows that it is only 200 rpm, which is not even comparable to ordinary household fans.

The turbofan spins for two seconds.

Suddenly, there was a barking sound.

The nozzle on the other side of the thruster glowed blue.

At the same time, violent airflow spurted out.

These streams tear the air, creating a thin, whistling sonic boom.

However, because of the airflow, the impact of breaking the sound barrier is relatively small, far less than one-thousandth of a physical aircraft breaking the sound barrier.

Chen Yi, who put on sound-proof earplugs and hid aside ahead of time, felt no other discomfort except for a slight noise.

"940.7 cattle."

"For this thrust, the thrust-to-weight ratio is not even two to one."

Chen Yi checked the thrust value displayed on the test bench, and couldn't help complaining.

Although he knew that the thrust of ion propulsion engines was generally relatively small.

But this little one is amazing too.

After all, this is not pure ion propulsion, but a formula of turbofan + ion propulsion.

Compared with turbofan combustion jet engines and combustion turbojet engines, these are easily nine to one, ten to one, ten to one to one, and the thrust-to-weight ratio of Chen Yi sprinting into space exceeds twenty to one.

The ion engine is just one word, touching.

After testing for more than three minutes, the battery was exhausted and the ion thruster stopped.

Chen Yi connected the charger, and then chose to read information,

Dense information emerged in my mind.

These are technical information such as the structure of the ion thruster, the internal electric field layout, the magnetic field distribution, the acceleration track distribution, and the magnetic field interference processing.

There are also some basic parameters such as the ejection speed and ejection quality of the ion thruster.

"The maximum injection speed is 520 meters per second, which is a good number. It is just that the injection quality of this unit is a bit low."

After more than two weeks of virtual learning.

Chen Yi quickly understood the information read this time, as well as the technical points.

Unit jetting quality is low.

This is a common problem with ion thrusters.

If chemical combustion thrusters are compared to tsunami flooding, then ion thrusters are like children peeing.

A real aerospace engine.

For example, the main engine of the Saturn V burns liquid hydrogen and oxygen, and can burn thousands of tons of fuel in a few minutes.

However, an ion thruster of the same volume consumes only a few hundred grams of fuel for one day of work.

Although ion propulsion, can easily give fuel faster injection velocity.

But this is a small amount and not very filling.

In addition, before the injection speed of the fuel approaches the speed of light, the relativistic effect intervenes.

The kinetic energy conservation and momentum formulas have been determined.

Kinetic energy is quadratically proportional to jet velocity, but once proportional to mass.

For the same power, the faster the injection speed of the fuel, the lower the quality of the injection, and the smaller the thrust.

Ion propulsion saves a lot of fuel and propellant by reducing thrust, and obtains higher efficiency and specific impulse.

In this way, in an environment where there is no gravity, no atmospheric resistance, and no propellant can be replenished in space, greater acceleration time and longer battery life can be obtained.

"Still need to improve

Improved intake control, improved ion injection control.

During the lift-off phase of the atmosphere, the propeller can supplement the propellant from the external atmosphere at any time.

There is no need to increase the injection speed, reduce the injection quality, and reduce the thrust in order to save propellant.

Instead, the injection speed should be reduced, the injection quality should be improved, and greater thrust should be obtained.

Wait until the high altitude and space, and then increase the jet speed, reduce the consumption of propellant, get more acceleration time and longer battery life. "

After deciding on the next improvement plan, Chen Yi did not hesitate and began to adjust the properties of the ion thruster.

Colorful lights emerged.

After the light dissipated, the original pure bucket-like ion thruster turned into a small black carbon hair dryer.

One end of the air duct is the fan blade, and the other end is the air outlet.

In the middle of the air duct, a circle of large and small modules and control capacitors are welded.

[Item: Stepless Speed ​​Regulation Ion Wind Cannon]

[Attributes: Energy x3.2, Strength x3.2, Quality x3.1, Speed ​​x3.1, Efficiency x3.2, Control x30.2, Beauty x3.5...]

[Wave of Consciousness: 7222203]

[Detecting that a certain attribute exceeds the initial value, do you want to read the information? whether! 】

[Note: This is a wind gun combined with the latest ion control technology. Through the precise control of ions, it can easily blow out the breeze of negative ions, and dry your hair within one minute.

At the same time, you can also increase the strength of the electric field and magnetic field, blowing out high-temperature plasma wind, faster speed, higher temperature, the hair dryer becomes a hot air gun in seconds, and it is not a dream to melt gold and iron】

"This is a good hair dryer for your girlfriend. If you love you, you can blow your hair. If you don't love you, you can burn your brain."

Looking at the remarks and comments of the latest wind gun, Chen Yi couldn't help being speechless.