This star is going to the moon

Chapter 449 A hilarious Wanchai shouts "Everyone follow my lead!" as Lu Yun and An Fangfei take their parents on a space trip!
On August 23, Laos and China announced the maiden flight information for another new rocket.

This time it was a small rocket, 10 meters tall, with a core stage diameter of 1.5 meters, a takeoff mass of 3 tons, and a low Earth orbit payload capacity... unable to enter orbit.

In other words, it can only be used as a sounding rocket to deliver payloads to suborbital space.

"Yes, the maiden flight is on the 10th of next month!"

The person who posted the video confidently introduced it, saying, "Don't let the small size of our 'Flying Squirrel No. 1' rocket fool you; our technology is extremely advanced!"

(Flying Squirrel No. 1 Rocket)
"Most rockets use either solid or liquid fuel, but our 'Flying Squirrel No. 1' rocket uses a hybrid solid-liquid technology!"

"It combines the advantages of both technologies and then merges them into one!"

Wow, this is incredible!

"This kind of high technology is even more advanced than that Lu Yun's space shuttle, which uses pure liquid fuel technology..."

An ordinary person might actually be intimidated.

Because countries around the world are indeed developing solid-liquid hybrid propulsion technology, including Laos and China, which have many projects in this area.

However, there has been no successful progress so far, and Wan Chai is actually going to use this technology to launch a rocket.

Currently, rocket propellants in the world can be broadly classified into solid propellants and liquid propellants.

The most significant characteristic of solid propellants compared to liquid propellants is that they can be stored for a long time at room temperature.

In addition, solid rocket engines have a relatively simple structure and do not require complex auxiliary systems.

From a manufacturing perspective, solid rockets are simpler to produce because they eliminate the fuel loading and unloading devices required for liquid rockets, making the overall manufacturing process more efficient and direct.

Solid rocket engines do not require complex fuel delivery systems, which greatly reduces the risk of fuel leaks and explosions.

Due to its simple structure and few potential failure points, this engine boasts excellent stability and safety.

Compared to liquid rockets, which require fuel lines, solid rockets are more reliable and have a higher safety factor.

Solid-fuel rockets have the ability to rapidly increase to peak thrust, making them particularly suitable for combat environments requiring rapid response.

Compared to other types of propulsion systems, solid-fuel rockets have a significant advantage in response speed, which can meet the tactical requirements of modern battlefields for rapid deployment and immediate strike.

Of course, solid-fuel rockets have a significant drawback: they do not have a restart function.

Once ignited, the combustion process cannot be interrupted or adjusted, making it impossible to restart, adjust speed, or shut down in flight.

This uncontrollability limits the application scope and flexibility of solid rockets.

One of the major advantages of liquid engines is their excellent adjustability.

By changing the nozzle size, adjusting the fuel flow rate, and adjusting the injection angle, precise control of thrust and fuel consumption can be achieved.

This flexible operating method allows the engine to have higher control precision.

Meanwhile, the liquid engine also supports multiple starts and stops, which not only improves efficiency but also effectively reduces operating costs.

However, compared to solid rocket motors which move vertically, liquid rocket motors also increase the complexity of the system.

However, in general, liquid fuels are more efficient than solid fuels.

This is because liquid fuels utilize oxidizers more effectively during combustion, generating greater propulsion. With the same volume or weight of fuel, liquid fuels can provide stronger power output. However, while liquid fuels are highly efficient, they also carry certain risks.

These types of fuels typically contain high-energy chemicals, which can easily cause explosions or fires if leaks or accidents occur.

In addition, liquid fuels must be stored in sealed containers, the related equipment is expensive, and professional personnel are required to operate and maintain them.

Both have their advantages and limitations, so scientists want to eliminate their disadvantages and combine their advantages to create a solid-liquid hybrid engine.

First, it is simpler and more reliable than pure liquid rockets because solid fuel assemblies reduce the need for complex piping and pumps.

It only requires one liquid propellant supply system, which greatly reduces the number of valves and pipes used, directly reducing manufacturing and maintenance costs.

It is also lighter than a pure liquid fuel system because it eliminates the need for bulky containers for storing liquid oxygen and complex delivery pump sets.

This design simplifies the structure of the propulsion system and reduces the overall weight.

At the same time, it offers better controllability compared to pure solid rockets because the liquid oxidizer can regulate the combustion process.

Engineers can precisely adjust the engine's thrust by adjusting the ratio of solid and liquid components in the fuel. This combination makes solid-liquid hybrid rockets very effective for specific missions, such as applications that require precise thrust control or rapid response.

This adjustment mechanism allows the engine's performance to be optimized according to actual needs, easily handling both high thrust and precise control requirements.

Hybrid propellants generate a large amount of gas during combustion, achieving a higher thrust ratio and thus providing stronger acceleration during the start-up phase.

Moreover, solid-liquid hybrid propulsion systems are safer than pure liquid propulsion systems.

This propulsion method involves combustion only during startup, eliminating the risk of fuel leakage and significantly reducing safety hazards.

Furthermore, the development of solid-liquid hybrid rockets can also promote the development of related technologies and provide more possibilities for future space exploration.

Therefore, in-depth research on this propulsion system is of great significance for improving rocket performance and expanding space capabilities.

but!

These types of propulsion systems also face some technical bottlenecks, including difficulties in regulating fuel flow and challenges in improving combustion efficiency.

and so……

So the rocket successfully attracted Lu Yun.

[Lu Yun: Since this idiot mentioned me, let me say something. Solid-liquid mixing technology is indeed a cutting-edge technology in various countries, but it's only a small branch because the technology of various countries cannot yet reach that level, so its various advantages are currently disadvantages.]

In other words, its performance is neither as good as that of liquid rockets, and it is more complex and cumbersome than solid rockets.

Therefore, this technology is now mostly used in sounding rockets and target missiles, which are basically small devices that cannot fly out of the atmosphere and enter orbit.

As for this "rat rocket"... what a fitting name! It can't even fly!

Alright, meeting adjourned. That was all!

[No, I also have an announcement to make: on the 25th, Fei Jie's birthday, our two families will be taking a space trip aboard the "Wooden Kite." Please look forward to our sweet live stream!]

Lu Yun's statement on Weibo amused many netizens.

[Haha, you toad, you toad, why did you have to provoke Lu Yun for no reason?]

(End of this chapter)