NASASpaceFlight.com Forum
International Space Flight (ESA, Russia, China and others) => Chinese Launchers => Topic started by: Satori on 06/28/2019 02:34 pm
-
According to 9ifly Chinese space forum, Yaogan-30-group 05 will be launched from Xichang in July 2019.
-
July 22?
-
July 22?
This is the date that shows up on spaceflightfans.cn .
-
9ifly mentions a July 26 launch
-
9ifly mentions a July 26 launch
Launch to take place around 03:30UTC on July 26.
-
A3738/19 - A TEMPORARY RESTRICTED AREA ESTABLISHED BOUNDED BY:
N263509E1072250-N264300E1065707-N265819E1070258-N265027E1072844. BACK TO
START. VERTICAL LIMITS: GND-UNL. ALL ACFT ARE FORBIDDEN TO FLY INTO THE
TEMPORARY RESTRICTED AREA. GND - UNL, 26 JUL 03:49 2019 UNTIL 26 JUL 04:09
2019. CREATED: 22 JUL 07:09 2019
-
NOTAM still active - two and a half hours until launch.
-
There are reports of T-0 at 04:03 UTC.
-
9ifly thread.
http://www.9ifly.cn/thread-92240-5-1.html
SFF page.
http://www.spaceflightfans.cn/event/long-march-2c-rocket-launch-yaogan-30-05-trio-satellite?instance_id=2659
-
Launch should be happening about now.
-
https://twitter.com/Cosmic_Penguin/status/1154600496549650432
-
Apparently liftoff confirmed.
https://twitter.com/LaunchStuff/status/1154603866337488896
-
liftoff confirmed!
-
Launch video! Can't see the rocket though.
https://www.weibo.com/tv/v/HFeCfrxlz?fid=1034:4398276305433750
-
Launch success confirmed. T-0 was at 03:57 UTC.
-
Successful launch!
https://mp.weixin.qq.com/s/i1JXtAs0773PoT6AWWr1pA
"People's Liberation Army newspaper Xichang July 26 (Zhu Rongxiong, reporter Yu Weirong) July 26, 2019 at 11:57, China's Xichang Satellite Launch Center with the Long March II C carrier rocket, successfully launched the remote sensing 30 05 sets of satellites into a predetermined orbit.
Remote sensing 30 05 satellites using multi-star network mode, mainly used to carry out electromagnetic environmental detection and related technology tests. The launch was the 308th flight of the Long March series of launch vehicles."
-
THE ROCKET HAS GRIDFINS!!!
-
Success banner.
http://www.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=92240&pid=666153
-
THE ROCKET HAS GRIDFINS!!!
Great spot! Here's a closer view.
-
Rui's article:
https://twitter.com/NASASpaceflight/status/1154614448151289856
-
Launch preparation photos and another launch video.
"On July 26th, at 11:57 a.m., the Long March II C rocket (hereinafter referred to as the "Long Second Prop rocket") developed by the Rocket Academy ignited its launch at the Xichang Satellite Launch Center, and "One Arrow Samsung" put the remote sensing 30 05 satellite into into orbit, and the launch was a complete success."
https://mp.weixin.qq.com/s/ClQZiKs24lzolKgFpmDjVQ
-
Official acknowledgement of the grid fin test:
https://twitter.com/Cosmic_Penguin/status/1154616906680115200
-
Official acknowledgement of the grid fin test:
https://twitter.com/Cosmic_Penguin/status/1154616906680115200
What about the gray thermal coating.
-
Official acknowledgement of the grid fin test:
https://twitter.com/Cosmic_Penguin/status/1154616906680115200
I wonder where they got that silly idea. Steering a falling booster, with grid fins... Where I have seen that before... ;D
In all seriousness, not a bad idea if you are going to drop them on land. Next up, they'll paint an X at the targeted drop zone...
-
THE ROCKET HAS GRIDFINS!!!
On the second stage?
-
THE ROCKET HAS GRIDFINS!!!
On the second stage?
No, that is the interstage. (Attaches to the first stage)
-
3 objets have been cataloged
2019-045A/44449 in 589 x 604 km x 35.00°
2019-045B/44450 in 589 x 605 km x 34.99°
2019-045C/44451 in 589 x 604 km x 35.00°
-
No, that is the interstage. (Attaches to the first stage)
During rocket's assembly it is attached to the second stage.
-
3 objets have been cataloged
2019-045A/44449 in 589 x 604 km x 35.00°
2019-045B/44450 in 589 x 605 km x 34.99°
2019-045C/44451 in 589 x 604 km x 35.00°
A new orbital plane, 180° from the most populated one.
So you are not OK with 36 satellites anymore. You'll need 72 to fill all the 12 positions in all of six planes.
-
No, that is the interstage. (Attaches to the first stage)
During rocket's assembly it is attached to the second stage.
Indeed, but that’s more of a function if how they vertically stack this rocket. (Probably to avoid working with explosive bolts high up) It is then bolted on permanently to the first stage it seems.
-
Launch video
https://www.youtube.com/watch?v=rr7BGqICc-o
-
3 objets have been cataloged
2019-045A/44449 in 589 x 604 km x 35.00°
2019-045B/44450 in 589 x 605 km x 34.99°
2019-045C/44451 in 589 x 604 km x 35.00°
A new orbital plane, 180° from the most populated one.
So you are not OK with 36 satellites anymore. You'll need 72 to fill all the 12 positions in all of six planes.
Surprising that no 2nd stage has been cataloged - all previous YG-30 missions had a second stage in slightly lower orbit.
Edit: Jul 28, 2nd stage now cataloged
-
https://twitter.com/aj_fi/status/1155427192874176512
Grid fins on the Chinese Long March 2C that launched 3 reconnaissance satellites on Friday. CASC claims they helped more precisely define the 1st stage drop zone & lower chance of damage downrange. Also a step towards reusable launchers. mp.weixin.qq.com/s/brJRqR17XYfn…
-
Official acknowledgement of the grid fin test:
https://twitter.com/Cosmic_Penguin/status/1154616906680115200
Maybe steer it into a really big dumpster? Or have they seen the light and are studying reuse? Pragmatic, those Chinese.
-
Official acknowledgement of the grid fin test:
https://twitter.com/Cosmic_Penguin/status/1154616906680115200
Maybe steer it into a really big dumpster? Or have they seen the light and are studying reuse? Pragmatic, those Chinese.
Both. For the current LM-2/3/4 series retro-fitting for reuse is not suitable, but they can use the grid fins as is to minimize the drop zone areas. They are planning for possible first stage vertical landing and reuse versions of the LM-6 & 8, although I understand that the plans are still in flux right now.
-
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
http://www.xinhuanet.com/english/2019-07/29/c_138265259.htm
-
-
Longmarch 2 get's Falcon-like fins
"Shanghai-based online news outlet The Paper reported that the 2C’s grid fins were developed by a team of about a dozen engineers, all under the age of 35.
The team also designed a new companion electrical control system to control the fins, taking about six months to complete the task. The report said China was the second country to master the technology, after the United States."
https://www.scmp.com/news/china/science/article/3020411/lift-chinas-long-march-grid-fin-tech-space-race-reusable-rockets
-
Rocketcam view of grid fin operations:
https://youtu.be/RzAh5WliucI
-
...and official English version:
https://youtu.be/NeqJgKudNlU
-
Launch code was 07-105
-
Some additional information about the CX-5 satellites based on commemorative items issued by Shanghai Engineering Center for Microsatellites (microsat):
- designed life time: 18 months
- mass: 345 kg
- intended constellation: 100 satellites (?)
Notice also the more detailed view on the spacecraft on left margin of the stamp sheet.
-
Notice also the more detailed view on the spacecraft on left margin of the stamp sheet.
This view unfortunately shows an UFO (or UHF F/O) satellite of the US Navy. See https://space.skyrocket.de/doc_sdat/ufo-4.htm