China's Space Program News Thread


shanlung

Junior Member
Registered Member
About the US denying China's attendance to IAC. To be honest, it is a good thing for China. For one, it removes any wish/hope among some Chinese who always wanted to join the "international family" which is essentially "kissing the back-end". That is a lesson that Mikhail Gorbachev and Boris Yeltsin had made Russia to pay dearly. I don't want China to be so foolish to go that way.

Science does not have border, but Scientist has to have, and the outcome of science certainly has. Collaboration must serve the purpose of the country.
Why then I am reminded of this little story below in italics?

As also we seen when USA cut off China from USA chips for fear of China beating USA in Supercomputer.
And we will see how USA trying to cripple the Chinese 5Gs and Huawei.

And in many other things.

How good to see USA working so hard to make China even greater.
In pushing that cow down the cliff time and time again.


IS THERE A COW IN YOUR LIFE THAT IS KEEPING YOU MISERABLE?

Once upon a time, in a faraway land, there lived a Chinese wise man and his disciple. One day during their travels, they saw a hut in the distance. As they approached it, they realized that it was occupied, in spite of its extremely poor appearance.

In that desolate place where there were no crops and no trees, a man lived with his wife, three young children and a thin, tired cow. Since they were hungry and thirsty, the wise man and his disciple stopped for a few hours and were well received. At one point, the wise man asked:

“This is a very poor place, far away from anything. How do you survive?”

“You see that cow? That’s what keeps us going,” said the head of the family. “She gives us milk, some of it we drink and some we turn into cheese. When there is extra, we go into the city and exchange the milk and cheese for other types of food. That’s how we survive.”

The wise man thanked them for their hospitality and left. When he reached the first bend in the road, he said to his disciple:

“Go back, get the cow, take her to the cliff in front of us, and push her off.” The disciple could not believe what he was hearing.

“I cannot do that, master! How can you be so ungrateful? The cow is all they have. If I throw it off the cliff, they will have no way of surviving. Without the cow, they will all die!”

The wise man, an elderly Chinese man, took a deep breath and repeated the order:“Go ahead. Push the cow off the cliff.”

Though outraged at what he was being asked to do, the disciple had to obey his master. He returned to the hut and quietly led the animal to the edge of the cliff and pushed. The cow fell down the cliff and died.

As the years passed by, remorse for what he had done never left the disciple. One spring day, the guilt became too much to bear and he left the wise man and returned to that little shack. He wanted to find out what had happened to that family, to help them out, apologize, or somehow make amends. Upon rounding a turn in the road, he could not believe what his eyes were showing him. In place of the poor shack, there was a beautiful house with trees all around, a swimming pool, several cars in the garage, a satellite dish, and more. Three good-looking teenagers and their parents were celebrating their first million dollars.

The heart of the disciple froze. What could have happened to the family? Without a doubt, they must have been starving to death and forced to sell their land and leave. At that moment, the disciple thought they must all be begging on the street corners of some city. He approached the house and asked a man that was passing by, about the whereabouts of the family that had lived there several years before.

“You are looking at it,” said the man, pointing to the people gathered around the barbecue. Unable to believe what he was hearing, the disciple walked through the gate and took a few steps closer to the pool where he recognized the man from several years before, only now he was strong and confident, the woman was happy, and the children were now good looking teenagers. He was dumbfounded, and went over to the man and asked:

“What happened? I was here with my teacher a few years ago and this was a miserable place. There was nothing. What did you do to improve your lives in such a short time?”

The man looked at the disciple, and replied with a smile:

“We had a cow that kept us alive. She was all we had. But one day she fell down the cliff and died. To survive, we had to start doing other things, develop skills we didn’t even know we had. And so, because we were forced to come up with new ways of doing things, we are now much better off than before.”

'WHO OR WHAT IS THAT ‘COW’ IN YOUR LIFE THAT YOU NEED TO PUSH OFF THE CLIFF?' Many a time, we have let our dependence on certain people, things or situation, create a comfort zone and limit us from achieving greater things. Personally, I am very ‘cautious’ in nature and it takes me a lot to let go and climb to another level. You may feel terrible at first, but in the end, it will all be worth it.

From the conversation in the end, the man says that they had to develop skills and do other things when their only ‘source of survival was dead’. At times we need to lose that job to realize that we can actually do well in business. Sometimes that business needs to fail, to realize that we can do well in other things. Sometimes a situation in our lives may have to fail for us to realize that we deserve and can get better.

Is there a cow in your life that is keeping you miserable? If so, push that cow down the cliff and please do not be tempted to go after it!

Have I talked to someone? Have you learned something?

What's that cow that's holding you? Will you push that cow down the cliff?
 

taxiya

Major
Registered Member
LandSpace TQ-12 liquid rocket engine completes 200 second test. It's China's first Liquid Methane-Liquid Oxygen rocket engine. Thrust is 80 ton in vacuum. LandSpace is a private company.

It is NOT China's first. It is only the first non-state LOX/Liquid Methane from China.

China's first LOX/Liquid Methane was fully tested in 2013, developed by CASC 6th Academy 101th institute. It is rated at 65t at sea level and 79t in vacuum. By 2016, the reusable variant was successfully tested for more than 10 times of full burn (of the same engine).

I dare to suspect that this TQ-12 (80t) or any other "private" liquid methane engines sourced (with CASC consent) their technology from 101th institute, and employs former staff from CASC.
 
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taxiya

Major
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Gaofen-7 is launched on a Long March-4B rocket at 11:22 am (Beijing Time) from the Taiyuan Satellite Launch Center in North China's Shanxi province on Nov 3, 2019

Gaofen-7 is a 3D topology mapping and imagery satellite with a sub-meter space resolution (all 3 dimensions). Within months China will have a sub-meter virtual globe.
 

anzha

Junior Member
Registered Member


China successfully launched another navigation satellite on Monday with the flight of Beidou-3I3 (IGSO-3) that took place from the LC2 Launch Complex of the Xichang Satellite Launch Center, Sichuan province. The launch used the Long March-3B/G2 ‘Chang Zheng-3B/G2’ (Y61) launch vehicle. T-0 was recorded at around 17:43 UTC.

Also designated Beidou-49, the satellite is part of the IGSO (Inclined) component of the 3rd phase of the Chinese Beidou (Compass) satellite navigation system, using both geostationary satellites and satellites in intermediate orbits.

The satellites are based on the DFH-3B Bus. This bus has a payload increased to 450 kg and payload power to 4,000 W. They feature a phased array antenna for navigation signals and a laser retroreflector and additionally deployable S/L-band and C-band antennas. With a launch mass of 4,600 kg, spacecraft dimensions are noted to be 2.25 by 1.0 by 1.22 meters.

Previous Beidou satellites were orbited on September 22, with a Long March-3B/YZ-1 launching the Beidou-3M23 ‘Beidou-47’ and Beidou-3M24 ‘Beidou-48’ satellites from Xichang.
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Quickie

Major
Designed with modularity in mind. Bundle more engines and/or add more stages for more payload capacity.

I suppose the last column is the payload mass in tonnes?

Strapping 3 together with 2 of them acting act boosters (Falcon Heavy style) would push the payload mass to well beyond that of the moon rockets currently being planned for. Overcoming the huge vibration would be a huge obstacle though.

I guess if the program is for real, the major hurdle is to first overcome the problem of clustering so many powerful rocket engines so close together.
 

anzha

Junior Member
Registered Member
China is aiming to launch its complex Chang’e-5 lunar sample return mission in late 2020, following launch vehicle-related delays.

The ambitious mission is now scheduled to launch atop the fifth Long March 5 heavy-lift rocket. The mission will launch from the Wenchang Satellite Launch Center situated on Hainan island.

Chang’e-5 will attempt to collect and return around two kilograms of lunar samples from a site close to Mons Rümker, a volcanic formation situated in the Oceanus Procellarum region of western edge of the near side of the moon.

The mission will involve the first robotic lunar orbit rendezvous. After the lander collects samples, an ascent vehicle will liftoff and dock with an orbiter module above the moon. A return capsule will then perform a ‘skip reentry’ following separation from the orbiter close to Earth. The return capsule will deliver the samples to the same site as where the country’s Shenzhou crewed missions land.

The complexity of the mission is considered by observers to be related future crewed lunar landing ambitions. The last lunar sample return, the Soviet Union’s 1976 Luna 24 mission, utilised a much simpler direct return approach.

Wu Weiren, chief designer of China’s lunar exploration program,
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state media the mission would fly in 2020 at the first China Space Science Assembly last month. No precise time was stated, but other priorities and missions indicate a launch late in the year.

Ahead of Chang’e-5 China will carry out a
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of the Long March 5B as a precursor to beginning the construction of a space station, in the first half of 2020. Following this, the fourth Long March 5 will launch China’s first independent interplanetary mission—to
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—in July or August.

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taxiya

Major
Registered Member
I suppose the last column is the payload mass in tonnes?

Strapping 3 together with 2 of them acting act boosters (Falcon Heavy style) would push the payload mass to well beyond that of the moon rockets currently being planned for. Overcoming the huge vibration would be a huge obstacle though.

I guess if the program is for real, the major hurdle is to first overcome the problem of clustering so many powerful rocket engines so close together.
The last column is the payload.

However, this is the currently planned moon rocket, there is no other. There was a CZ-5 based manned moon rocket in the thought called CZ-5DY (Deng Yue, moon landing) in 2013, but that never left paper. Besides, this new CBC rocket is CZ-5 derivative in Chinese mind. Actually, there was only CZ-5 from the beginning,CZ-7 used to be the medium sized CZ-5 in the initial plan, then got its own branch, later on CZ-720 (HO) became CZ-8. The Chinese naming principle is that anything that is based on 3.5m core and YF-100x are CZ-7 (then CZ-8). Anything with 5m core is CZ-5. Anything with 10m core is CZ-9.

The only other moon rocket is CZ-9, but that is a beast of over 50 tonnes LTO, doubling this CBC of >25 tonnes LTO.

The program is not only real, but is being produced, see #4888 which showed the first stage and #4889 the second stage. This design has passed technical review a month ago. See here
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"System technology and engineering application of new 5m modular new manned rocket (study)" has successfully concluded. Length about 87m, liftoff mass 2200t, liftoff thrust 2700t, LTO payload no less than 25t.
 

Bltizo

Lieutenant General
Staff member
Super Moderator
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The last column is the payload.

However, this is the currently planned moon rocket, there is no other. There was a CZ-5 based manned moon rocket in the thought called CZ-5DY (Deng Yue, moon landing) in 2013, but that never left paper. Besides, this new CBC rocket is CZ-5 derivative in Chinese mind. Actually, there was only CZ-5 from the beginning,CZ-7 used to be the medium sized CZ-5 in the initial plan, then got its own branch, later on CZ-720 (HO) became CZ-8. The Chinese naming principle is that anything that is based on 3.5m core and YF-100x are CZ-7 (then CZ-8). Anything with 5m core is CZ-5. Anything with 10m core is CZ-9.

The only other moon rocket is CZ-9, but that is a beast of over 50 tonnes LTO, doubling this CBC of >25 tonnes LTO.

The program is not only real, but is being produced, see #4888 which showed the first stage and #4889 the second stage. This design has passed technical review a month ago. See here
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In particular, I think the configuration of this new rocket (whatever it ends up being called) would make for a good configuration to develop a reuseable VTVL variant of, depending on how well the current efforts to develop reuseable variants of existing other rockets go for CASC.

7 YF-100K engines per CBC make for a viable way to adjust thrust during a reentry/landing profile.
 

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