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Chinese Space Projects

merriman

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Yet, the grid-fins location above the classic Russian open structure to permit next stage start up while still matted to the preceding stage suggests that the fins are at the base of the second-stage. Am I missing something here? Or is that the trans-stage affixed to the first stage?
 

Michel Van

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Yet, the grid-fins location above the classic Russian open structure to permit next stage start up while still matted to the preceding stage suggests that the fins are at the base of the second-stage. Am I missing something here? Or is that the trans-stage affixed to the first stage?
Nope that is part of First stage, it's Interstage section
but here are opening for exhaust of Second stage engine, that ignited while first stage begin main engines shut down.
This "Shoot into Hole" procedure is failsafe, the Second stage engine can start up easier under acceleration of frist stage.
The Titan's rockets and allot Soviets rockets use that principle
 

Flyaway

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China successfully tests accurate landing of rocket debris

BEIJING, July 28 (Xinhua) -- China has successfully tested the technology that can accurately control the landing site of falling rocket parts, making progress toward reusable launch vehicles in the future, China Aerospace Science and Technology Corporation (CASC) said on Sunday.

The CASC said that the test was carried out following a Long March-2C rocket launched on Friday, and focused on grid fins which are like "wings" on rocket core part to increase precision in control of its landing location.

According to experts from the CASC, the rocket' flight trajectory is designed to avoid densely populated areas. But after completing the mission, the rocket debris falls under no control with a wide range of landing points which sometimes involve inhabited areas.

In order to ensure the safety of people's lives and property, the currently practice is to evacuate people to the safety zone before each mission, which is not only inconvenient for the local people, but increases the cost and task difficulty.

The success of the test is of great significance for improving China's inland rocket landing safety, minimizing the inconvenience to the local people, as well as promoting the follow-up development of carrier rockets' controllable recovery, soft landing and reuse, according to He Wei, an official with the CASC.

"The swinging grid fins were used to control the rocket debris' direction and attitude, much like the wings of the debris," said Cui Zhaoyun, the deputy chief designer of Long March-2C rocket. The landing site control of large and medium rockets is much more difficult than that of small rockets, he added.

Source: Xinhua| 2019-07-29 00:06:36|Editor: yan

 

Flyaway

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The article includes various images that have turned up in different places from this mission.

At 14:08 UTC on 31 July, Longjiang-2, also known as DSLWP-B, passed behind the Moon for the last time. Half an hour later, with an absence of new signals to indicate a reappearance, it was clear that the Moon had lost an orbiter and gained a new crater on its far side. According to a prediction by Daniel Estévez, the 50-centimeter-tall, 47-kilogram DSLWP-B satellite impacted at 14:20 UTC.

Not to worry—this was a planned measure to prevent potential collisions or debris for future missions. A maneuver performed 24 January lowered the periapsis of the satellite’s lunar orbit by about 500 kilometers, with orbital perturbations over time seeing the satellite impacting the Moon Wednesday after 432 days in lunar orbit.
 

Michel Van

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LinkSpace founder and CEO Hu Zhenyu, (25-year-old) get his favor book sign by Robert Zubrin (the Chinese edition of Case for Mars)

 

Flyaway

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CCTV news has made a 12+ minutes long special report on the commercial launch today of Jielong-1:

 

Flyaway

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Michel Van

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Flyaway

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China's lunar rover travels over 300 meters on moon's far side

Source: Xinhua| 2019-11-04 14:40:26|Editor: Liu

BEIJING, Nov. 4 (Xinhua) -- China's lunar rover Yutu-2 has driven 318.62 meters on the far side of the moon to conduct scientific exploration of the virgin territory.

Both the lander and the rover of the Chang'e-4 probe have ended their work for the 11th lunar day, and switched to dormant mode for the lunar night on Monday (Beijing time), according to the Lunar Exploration and Space Program Center of the China National Space Administration.

The rover is now located 218.11 meters northwest of the lander…

During the 11th lunar day of the probe on the moon, the scientific instruments on the lander and rover worked well, and a new batch of scientific detection data was sent to the core research team for analysis.

Scientists are planning the future exploration route for the rover…
 

Flyaway

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China to meet challenges of exploring asteroid, comet

XIAMEN, Nov. 6 (Xinhua) -- Chinese space engineers are tackling the key technologies needed to explore a near-Earth asteroid and a main-belt comet with one space probe.

The proposed mission is to send a probe around an asteroid named 2016HO3 and then land on it to collect samples, Huang Jiangchuan, a researcher from the China Academy of Space Technology, recently told the first China Space Science Assembly in Xiamen, east China's Fujian Province.

The probe will then fly back to the proximity of Earth, and release a capsule to return the samples. After that, the probe will continue its journey. With the assistance of the gravity of Earth and Mars, it will finally arrive at the main asteroid belt and orbit comet 133P, Huang said.

Asteroid 2016HO3 has a very close relationship with Earth and is known as a "mini moon" or a quasi satellite. It has a diameter of about 40 to 100 meters and a density of about 2.7 grams per cubic centimeter, said Huang.

"Where is it from? What's its relationship with the Earth and Moon? Those are questions we want to know," he said.

The second target, comet 133P, is the first comet found within the main asteroid belt that displays characteristics of both an asteroid and a comet.

...


 

Michel Van

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there is interesting Article about Long March 5

the Long March 5 return to flight end of this year
3 year pause follow the The two test flight, were second was not so successful
Hopefully during the time they got the bugs out system
Because the Long March 5 is needed for allot missions

Shijian-20, a 8-ton GEO telecom satellite
Chang’e 5, A sample return mission from Moon
Huoxing-1, Orbiter/Rover for Mars to launch in 2020
A sample return mission to Asteroid 2016HO3
and from 2024 launch of China Space station Modules
 

FighterJock

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Michel Van

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interesting news article

China mulls $10 trillion Earth-moon economic zone

India Dr APJ Abdul Kalam say on it
http://www.thespacereview.com/article/3828/1

and seems they go
break true at there Shuttle Program
 

Flyaway

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China's first electromagnetic satellite bears fruitful results

BEIJING, Nov. 30 (Xinhua) -- China's first seismo-electromagnetic satellite Zhangheng 1 has obtained fruitful electromagnetic data, according to the China Aerospace Science and Technology Corporation (CASC).

The satellite has enabled China to obtain a global geomagnetic map and an ionospheric map with its own intellectual property rights.

It has obtained information about global ground artificial sources, magnetic storms and signals of earthquakes above 7 magnitude. It also helps with understanding the coupling mechanisms of the lithosphere, atmosphere and ionosphere.

Shen Xuhui, the chief scientist of the satellite, said China is expected to have three electromagnetic satellites in orbit by 2022, offering support for earthquake forecasting as well as space weather monitoring and warning.

Developed by DFH Satellite Co., Ltd. under the CASC, the satellite Zhangheng 1 was launched on Feb. 2, 2018.

The satellite was named after Zhang Heng, a renowned scholar of the East Han Dynasty (25-220), who pioneered earthquake studies by inventing the first-ever seismoscope in the year 132



 
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