Some people say that there is a huge gap between China's rocket technology and that of the United States, which is 60 years, and that of Russia, which is 40 years. what do you think?

Realistically speaking, the gap between China and the United States in the field of launch vehicles is really big, because science is not allowed to be fake! The picture shows Saturn V, a high-thrust launch vehicle developed by the United States for the Apollo moon landing program. Developed by the famous team of Dr. wernher von braun, it is by far the highest thrust rocket in the world. According to the data, Saturn V rocket can launch 45 tons into the lunar orbit, which is beyond the reach of other rockets at present! The launch thrust of China's Long March 3B rocket that launched Chang 'e IV to the back of the moon is only one eighth of that of Saturn V, which is a huge gap (460: 3408).

So, Saturn 5

Why does the rocket need 3400 tons of thrust? It is precisely because the "Apollo program" is manned to the moon that people are needed, the lunar module, the lunar rover and other instruments are needed, and the lunar module and people have to return, which requires great thrust to launch these people and things into the lunar orbit, otherwise the plan will not be implemented at all!

The main diameter of Saturn V rocket is10m, and the height is110m. In this way, in the manufacturing process of large rockets: cold bending (rolling), riveting, welding, multi-level connection ... if there is a slight gap, it will fail to launch, and the people and things it carries will become ashes!

J2 liquid oxygen liquid hydrogen engine used in the second stage (5) and the third stage (1) of Saturn V rocket is very exquisite in design, and it is still the most environmentally friendly liquid oxygen liquid hydrogen rocket engine in the world.

The development and manufacturing cost of Saturn V rocket is extremely high. The first picture shows 13 Saturn 5 rockets launched by the whole Apollo program, with a cost of $64160,000, with an average of $493 million, while the cost of the Nimitz-class nuclear aircraft carrier was 1968. So that the United States itself felt great financial pressure and terminated the Apollo program.

The Soviet Union/Russia's proton series launch vehicle was also planning to land on the moon, but later it encountered great technical obstacles and saw the huge cost of the United States ... and switched to the space station. As can be seen from the picture, the rocket design is far less exquisite than Saturn 5, and there are many first-class rocket engines and booster rocket engines! Rocket engines need to be ignited at the same time to form thrust at the same time, and a delay or delay in rocket launch will fail! But the Soviet Union was really inferior to the United States in the development of rocket engines. In order to get 3000 tons of thrust, it has to increase the number of engines, but the control of so many rockets is a big problem.

Saturn 5

There are only five F 1 engines in the first stage of the rocket, and the design is simple and clear!

Although China's space development has made great progress and formed a set of aviation science and technology, we have implemented all the space projects involved in the United States and the Soviet Union at present, but space engineering is a complex and top-level technology, which needs long-term accumulation of industrial and technological manufacturing, and its operating price is very expensive, which requires a lot of investment from the state, so it is impossible to get it up at once! To be down-to-earth, only by working step by step can by going up one flight of stairs be achieved.

The "Long March 9" carrier rocket to be launched in 2028 will surpass the "Saturn 5" rocket in technical level, with a take-off thrust of over 5,800 tons and a lunar orbital load of 66 tons, both of which will surpass the "Saturn 5" rocket and the "Proton M" rocket. It will be a powerful equipment for China's space station construction project, manned moon landing project and Mars exploration project!

Without boasting or boasting, the gap between China and the United States is indeed huge.

Load is one of the most important standards to measure the level of space flight.

1973 during the cold war, Saturn v, which made human beings realize their dream of landing on the moon, had a take-off weight of 3,038.5 tons, a total thrust of 3,408 tons, a lunar orbit carrying capacity of 45 tons, and a low-earth orbit carrying capacity of 1 18 tons.

Let's take a look at the heavy falcon of American civil aviation model space exploration technology company, with a carrying capacity of 63.8 tons in low earth orbit and 26.7 tons in geosynchronous orbit.

Delta IV heavy rocket, charged at the end of 2004, is the largest carrier rocket in active service in the United States, with a payload of 28.79 tons in low earth orbit.

You see, even compared with the United States itself, up to now, no rocket can be the opponent of Saturn V. Tu 5 is still the best rocket in human history.

Look at the SLS space launch system being developed in the United States. In the first phase of SLS, 70- 1 10-ton constellation is the main manned mission, and then 130-ton cargo hold load mission will be developed. The ultimate bearing capacity will reach 143 tons, or even 165 tons. This is almost the same as Saturn V, so it is also called the most powerful launch vehicle system in history.

Look at China's rocket again.

Long March 5 is the most advanced one at present. On the first flight of 20 16, the carrying capacity of geosynchronous transfer orbit and near-earth orbit reached 14 tons and 25 tons respectively.

Long March 9 is a veritable heavy rocket in China, with a launch weight of 3,000 tons and a near-earth carrying capacity of 140 tons, which can be said to far exceed the heavy falcon of Space Exploration Technology Company. However, the project has just been established, and it will take at least 10 years to develop successfully.

Although the comparative carrying capacity is not very scientific, the gap between China and the United States in this respect is still very obvious. Exaggerated, the difference of 60 years is 15 years.

As for Russia, there has been no progress for many years. But the lean camel is bigger than the horse, and Russia is still ahead of China in space technology, but the gap is narrowing rapidly.

Chang 'e IV's trip to the moon is about to complete a pioneering work in human history. Landing on the back of the moon. There are more questions on the Internet about when to send a man to the moon. Landing on the moon requires a rocket with high thrust and high reliability. At present, Long March 9 is only an early forum project made by astronauts, so manned landing on the moon is temporarily impossible. Fat five will not be able to complete the last step of our three-step lunar exploration until 2020, sampling and returning. Some people say that the gap between China's rocket technology and the United States is 60 years, and that between and Russia is more than 40 years. There is nothing wrong with this statement. The question is what Fiona Fang thinks. As for the answer to the question, China's current chief rocket engineer Long Lehao has given the answer. Although the gap between our rockets is obvious, if the country really makes up its mind to do it, there is still hope in ten years. Look, this is our astronaut, full of confidence. Think about it. Think about the so-called 60 years. Soul dance desert thinks his words are very reasonable.

We have no space race. In the spirit of standing and talking as easy as talking, the gap, the situation we faced in those years, the lack of funds, the lack of technology and the high fence, all of which we must consider before we can be cautious. At that time, the United States and the Soviet Union launched a space race with the strength of the whole country, and the Apollo program alone invested $654.38+08 billion. What is this concept? An aircraft carrier didn't have $500 million at the time. No one can eat. Saturn V completed its last space launch in 1973, and then it collapsed and dismantled its production line. Now it has to stay in the space museum, and it is meaningful to revisit it. The United States landed on the moon, but it couldn't get up there. Is this retrogression or progress? We are not doing this for the national economy and people's livelihood. Only by taking the road of sustainable development can space flight become more smooth.

Say fat five. The capacity is still not good. Because there is no liquid oxygen refining and solid engine with large thrust, and there is no hydrogen-oxygen engine with high specific impulse, only the first stage is combined with 10 engines, which increases the complexity of design and faces the problem of reliability. This configuration, not to mention the United States and Russia, is obviously technically different from Ariane 5 of the European Space Agency. Ariane 5ES only needs 1 Vulcan 2, 2 solid boosters and 1 upper stage. Fortunately, based on the objective reality, we have achieved equal thrust, and it is good to be fat. Related engine projects have been developed, including 200-ton liquid hydrogen engines and 360-ton and 500-ton solid engines, all of which are under study.

↑ Pain. It didn't cost much and we did a lot of things, which is our pursuit of space flight. Our launch is one-tenth of the investment of the United States and Russia, but it has reached 70% of the load of the two companies. Isn't this a success? All space projects lasted from 1992 to 20 1 1 year, and only10 billion dollars was spent. Who can't see our achievements? According to statistics, the first and second phases of our lunar exploration project cost a total of * * *, that is, the cost of building a two-kilometer subway. God, our great space scientists, you are great! Look, this is our energy, this kind of energy, infinite, can't be overstated. Mr. Lu Xun once wrote that to gain a position in today's world requires extraordinary intelligence, morality, character and thought, and it takes a lot of effort to think. Sir, use our scientists, think about it, think about it, they are really great. Dance of the Soul Desert would like to pay full tribute to them on the occasion of this new year.

The idea of this gap year is nothing more than that the United States made the Saturn 5 rocket with great thrust in the 1960 s and completed the feat of human landing on the moon; Russia had heavy rockets such as protons and energy during the Soviet era. However, it is unconvincing to say that there is a gap of 640 years between China and the United States and Russia. For example, Falcon, the largest rocket in the United States with a capacity of 63.5 tons, has a low-earth orbit carrying capacity of just over half that of Saturn 5, and Delta 4 rocket has a low-earth orbit carrying capacity of only about a quarter of that of Saturn 5, while Cosmos 5 and Antares rockets also rely on Russian RD- 180, RD- 18 1 rocket engines. Russian energy rockets have been discontinued for a long time. The carrying capacity of angara 5 heavy rocket in low earth orbit is only 24.5 tons, which is less than one tenth of that of energy rockets (the carrying capacity of energy rockets in low earth orbit is 270 tons). Does it mean that the rocket technology of the United States and Russia has been retrogressive in recent years?

In order to compete for space, the United States and the Soviet Union did not hesitate to develop heavy rockets. After the cold war, there was no such demand, and the demand for heavy rockets naturally declined. In recent years, the United States has re-developed large-flow heavy rockets because it has discovered powerful pursuers behind it.

Compared with the United States, the Soviet Union/Russia, China started at the latest, invested the least, and accumulated the weakest overall technical strength and experience. Besides, there is no such great demand, so we didn't engage in heavy rockets. However, China's space achievements in recent years are remarkable in the world, which shows that China's rockets can meet the needs of the current period, rather than pursuing any ranking.

Rocket technology is not only thrust, but also a lot of technologies such as fuel, materials and control system, as well as high reliability requirements. In these respects, the gap between China and the United States and Russia is not very big, especially in terms of reliability, which not only lags behind, but even surpasses the United States and Russia. Now, China has a new space development plan, such as the future space station, manned moon landing and deep space exploration. And the increasing demand for heavy rockets has driven the development of heavy rockets, such as Long March 5 and Long March 9. And China is still slow and steady, according to one's abilities, and doesn't intend to engage in a space race with anyone, so it looks very leisurely. According to the current pace of rocket development in China, in 10- 15 years, the gap with the United States will be greatly narrowed, and Russia is likely to be surpassed. (S)

Sixty or forty years? There aren't that many. We should know that the comprehensive evaluation of rockets is not only thrust, carrying capacity and safety, but also very important factors.

There were many rocket explosions in the Soviet Union and the United States in the last century. If you are interested, you can check it yourself. Many people have answered relevant questions before, so you can search.

If you say there is no gap, it is really unrealistic. The gap is also obvious. A large part of Russia has inherited the technology of the former Soviet Union. The lean camel is bigger than the horse, and the rocket engine technology is better than ours.

(The picture shows the Long March 7)

Looking at the United States, SPACEX, a private space company in the United States, currently uses Falcon 9 as a rocket, and its carrying capacity is similar to that of our Long March 7. However, our Long March 7 was successfully launched for the first time in June 2065438+2006, and there are still many technical indicators to be achieved. At present, it cannot undertake a large number of space launch missions at present, and will begin to undertake most launch missions around 2020.

(Falcon 9)

Moreover, Musk's company focuses on recyclable and reusable rockets, which greatly reduces the cost of rocket launch. Space exploration technology company is the first company to reuse rockets, but it is only a private space company, and it is remarkable to be able to do this. Moreover, their eyes are on Mars, and their boss wants to retire on Mars.

(Saturn V)

Saturn V is really a great rocket. It has completed many missions to the moon on 1969 and later. Saturn V is the second largest rocket in the world. First, the ultra-heavy launch vehicle energy developed by the Soviet Union has a near-earth carrying capacity of about five times that of Long March 5, and the gap is obvious.

(Soviet energy)

Our Long March 9 is still under development. The design index of Long March 9 is similar to Saturn V and Energy, and it will undertake further space exploration tasks. If 640 years is too much, 20 or 15 is almost the same. Again, you can't just look at the carrying capacity.

My humble opinion, welcome comments!

Speaking of the gap with American rocket technology, it is the first time in 242 years. You will ask, why 242 years? To tell you, the founding day of the United States is1July 4, 776. Obviously, it's not this number. The second number is 1926. 16 In March, robert goddard, USA launched the world's first rocket, flying for 2.5 seconds, with an altitude of 13 meters and a flying distance of 56 meters, which has not yet reached the operational level. The third number, 1942, is the V_2 rocket studied by the Germans. It is 14 meters long, weighs 1 ton and flies over 2000 meters. This is the first practical rocket in human history. Today in 76.

Of course, we don't want to play numbers games, let alone for many years. Just like China's 40 years of reform and opening up, its rapid development has surpassed the development course of some western countries 100 years, which cannot be measured and judged by time. However, it is very clear that the gap between our rocket technology and the United States is more important to face up to the gap and find out where it is. Through unremitting efforts, catch up, narrow the gap, and even catch up with the world's top technology, to achieve a first-class rocket technology power. This is the expectation of our people.

In my opinion, there is a gap of 60 or 40 years between China's rockets and those of the United States and Russia. It must be the conclusion drawn from the Apollo program of the United States and the Mercury and Venus exploration programs of the Soviet Union in the 1950s and 1960s.

Undeniably, in the competition between the United States and the Soviet Union at that time, both countries made great progress and gained more knowledge about the moon, Venus, Mercury, Mars and some distant planets in the space field. However, the exploration of outer space by the United States and the Soviet Union is based on the hegemony between the two countries. In order to stay ahead of the competition, both sides have invested huge manpower and material resources in space, even regardless of the cost. However, it has also brought some serious consequences, such as the high failure rate of rockets: project mercury in the 1960s in the United States spent nearly 300 million dollars (1960s), failed three times in 15 launches, and was "partially" successful 1 time, with a failure rate as high as 20%. In 20 18, the success rate of China's 36 launches was 100%.

Therefore, I think that judging the technical level of a rocket depends not only on the load, but also on the success rate of launch. We don't deny that there is a big gap with the United States and Russia in rocket load, but we also recognize the perseverance and down-to-earth spirit of our astronauts.

China is already the three largest space powers in the world, and the people of China should be proud of such proud achievements, because China's space industry is built on poverty and poverty. When China decided to engage in space flight, the United States and the Soviet Union were already the leaders of the two camps and had a solid industrial base.

There is a gap, but the results should be more worthy of recognition. Only if there is a formal gap will we continue to work hard. I believe that one day, with the wisdom of China people, China will reach its peak not only in the aerospace industry, but also in all fields!

How can there be such a big gap? If nothing else, the measurement and control, satellite relay and communication technologies necessary for launching rockets are several orders of magnitude higher today than they were 60 years ago. The United States landed on the moon because of the national system. Today, space companies can explore Mars. China doesn't need to lift the national strength to explore the moon today.

It is unscientific to say things by how many years. The same 20 years, the United States for 20 years, China for 20 years, Russian and Indian for 20 years? Look at what we were like in 1998 20 years ago. At that time, there was no one-kilometer high-speed rail. Most families think that owning a car is just an illusion. Internet access is still the patent of a few elites, and the installation fee must be paid to install the landline ... and then 20 years passed quickly. China today and China 20 years ago are simply two countries.

Our development in the space field will certainly make comprehensive use of various resources and make progress in all aspects. The gap with developed countries such as the United States and Europe is not widening, but narrowing, and there are still advantages in some areas. This is the status quo of the aerospace industry. Look at the problem comprehensively, just like the United States is still importing Russian high-power rocket engines today, but can you say that their space technology is behind Russia? It may be partially backward, but the overall strength is still much stronger.

The development of technology is accelerating. With 1, there will be 100 later, and it will be a matter of time before the probe can be sent to the back of the moon and then to Mars, at least in less than 60 years.

It is an indisputable fact that there is a 60-year gap between China and the United States in terms of launch vehicles. At present, the rocket with the largest take-off weight in China is Long March 3 B, with a take-off weight of 460 tons. In the last century, Americans launched Saturn V carrier rocket with a takeoff weight of more than 3,400 tons, just 50 years ago. Today, 50 years later, not only can we not build such a heavy rocket, but even a launch vehicle with a take-off weight of 869 tons like Wu Lianchang has not been successfully tested. China science and technology people should catch up! Admit that you are unwilling to lag behind, and strive to catch up, which is the attitude that China rocket research and manufacturing team should hold.