Came across this article dated 27 Sept 2017:https://thespacereporter.com/article.php?n=rocket-failure-causes-china-to-postpone-lunar-sample-return-mission&id=131684There was a mentioned of a second Shijian-18. I assume the author meant a backup for the Shijian-18 that was lost. Scheduled for next month? Using the CZ-5 (Y3) that was initially meant for Chang'e 5? What do you think...just speculation by the author?"Another Long March 5 launch scheduled for November might carry a second Shijian-18 satellite, replacing the first one, which was destroyed in the failed launch." (paragraph six of the article)
Previous information said that that launch was schedule for the second quarter of 2018.
So if I understand this right, the replacement satellite for ill-fated Shijian-18 launch will be using CZ-5 (Y3) and will launch in the second quarter of 2018 in place of the originally scheduled Chang'e 5???Quote from: Moon Rabbit on 10/13/2017 04:08 pmCame across this article dated 27 Sept 2017:https://thespacereporter.com/article.php?n=rocket-failure-causes-china-to-postpone-lunar-sample-return-mission&id=131684There was a mentioned of a second Shijian-18. I assume the author meant a backup for the Shijian-18 that was lost. Scheduled for next month? Using the CZ-5 (Y3) that was initially meant for Chang'e 5? What do you think...just speculation by the author?"Another Long March 5 launch scheduled for November might carry a second Shijian-18 satellite, replacing the first one, which was destroyed in the failed launch." (paragraph six of the article)Quote from: Satori on 10/13/2017 06:26 pmPrevious information said that that launch was schedule for the second quarter of 2018.
If there is a launch next month, rocket stages should be transported to Wenchang right now. Could be verified by checking the whereabout of yuangwang21/22.Edit: found Yuan Wang 21 anchored at Zhangjiagang. https://www.fleetmon.com/vessels/yuan-wang-21_0_8295142/Don't known where is Yuan Wang 22 right now.
Quote from: russianhalo117 on 10/13/2017 10:10 pmSo if I understand this right, the replacement satellite for ill-fated Shijian-18 launch will be using CZ-5 (Y3) and will launch in the second quarter of 2018 in place of the originally scheduled Chang'e 5???Quote from: Moon Rabbit on 10/13/2017 04:08 pmCame across this article dated 27 Sept 2017:https://thespacereporter.com/article.php?n=rocket-failure-causes-china-to-postpone-lunar-sample-return-mission&id=131684There was a mentioned of a second Shijian-18. I assume the author meant a backup for the Shijian-18 that was lost. Scheduled for next month? Using the CZ-5 (Y3) that was initially meant for Chang'e 5? What do you think...just speculation by the author?"Another Long March 5 launch scheduled for November might carry a second Shijian-18 satellite, replacing the first one, which was destroyed in the failed launch." (paragraph six of the article)Quote from: Satori on 10/13/2017 06:26 pmPrevious information said that that launch was schedule for the second quarter of 2018.i read the article and was wondering whether it is correct (launch in November 2017) because i cannot find other news about this. But it is probably not true as there is no evidence that the CZ-5 (Y3) had already being transported to Wenchang as posted by zhangdmev (thanks). If i am correct Zhangjiagang port is not anywhere near Tianjin. (Nevertheless, the whereabout of the yuangwang 22 is not known...anyone has idea where it is?)Quote from: zhangmdev on 10/13/2017 06:14 pmIf there is a launch next month, rocket stages should be transported to Wenchang right now. Could be verified by checking the whereabout of yuangwang21/22.Edit: found Yuan Wang 21 anchored at Zhangjiagang. https://www.fleetmon.com/vessels/yuan-wang-21_0_8295142/Don't known where is Yuan Wang 22 right now.
Interesting. Someone in 9ifly reminded me that the Xiang Yang Hong 09 survey vessel(support ship of the submarine Jiao Long) is just in the position of CZ-5 stage 1 crash. I just checked the satellite AIS, the current position of the ship is 139°34.08'E 16°49.91'N in 2017-10-03 04:28:38(UTC +8)
Quote from: SmallKing on 10/03/2017 12:12 amInteresting. Someone in 9ifly reminded me that the Xiang Yang Hong 09 survey vessel(support ship of the submarine Jiao Long) is just in the position of CZ-5 stage 1 crash. I just checked the satellite AIS, the current position of the ship is 139°34.08'E 16°49.91'N in 2017-10-03 04:28:38(UTC +8)One of my sources confirmed that they were looking for the debris of this launch, but they hadn't made a final decision whether to salvage it or not
Quote from: SmallKing on 10/16/2017 03:03 pmQuote from: SmallKing on 10/03/2017 12:12 amInteresting. Someone in 9ifly reminded me that the Xiang Yang Hong 09 survey vessel(support ship of the submarine Jiao Long) is just in the position of CZ-5 stage 1 crash. I just checked the satellite AIS, the current position of the ship is 139°34.08'E 16°49.91'N in 2017-10-03 04:28:38(UTC +8)One of my sources confirmed that they were looking for the debris of this launch, but they hadn't made a final decision whether to salvage it or notIs it normal for the administration to salvage components (in this case the CZ-5 stage 1) after a failed launch?
Long March 5 update: The fault behind the July failure has been identified & effective measures taken. However, the fault itself has not been disclosed. 3rd flight will be by/near end of 2018 http://news.sina.com.cn/c/nd/2018-01-15/doc-ifyqptqv9660647.shtml … (中文)
The new info comes from Tao Gang, general manager of Tianjin Long March Launch Vehicle Manufacturing Co, which produces the CZ-5. Tao adds mass production of active rockets will be one of the main tasks for 2018, together with start of R&D on next-gen launchers.
China to launch Long March-5 Y3 rocket in late 2018 BEIJING, April 16 (Xinhua) -- China plans to launch its heavy-lift carrier rocket, the Long March-5 Y3, in late 2018, after finding the cause of the failure of the Long March-5 Y2, according to the State Administration of Science, Technology and Industry for National Defense.The Long March-5 Y2 rocket was launched from Wenchang Space Launch Center in the southern province of Hainan on July 2, 2017, but a malfunction happened less than six minutes after liftoff.Analysis based on computer simulations and ground tests showed that a problem occurred in a turbine exhaust device in the engine of the first stage of the rocket, the administration said Monday.The engine has been improved and has passed many ground tests. The research team is producing the Long March-5 Y3 rocket, according to the administration.If the Long March-5 Y3 rocket is successful, the Long March-5 Y4 rocket will be used to launch the Chang'e-5 lunar probe, which is expected to bring lunar samples back to Earth.
The State Administration for Science, Technology and Industry for National Defense (SASTIND), which oversees China’s space activities, released a report April 16 attributing the failure to a turbopump on one of two liquid-oxygen and hydrogen YF-77 engines powering the rocket’s first stage.The turbopump’s exhaust structure, according to SASTIND, failed while under “complex thermal conditions.”Redesigned YF-77 engines have already been through hot fire testing at a site in a ravine near Xi’an in north China. The tests have verified the effectiveness of the measures taken, according to the report.The return to flight is to take place late in the year, with previous space industry statements pointing to November.
Instead, the third Long March 5 will carry an experimental telecommunications satellite named Shijian-20, or “Practice-20” in Chinese, based on a new, large DFH-5 satellite platform, similar to the Shijian-18 satellite lost in July.
The SASTIND report states that the fourth Long March 5 will now carry the Chang’e-5 lunar sample return mission, launching in 2019. The mission will be the first of its kind for more than four decades and aims to collect around 2 kilograms of regolith from a site close to Mons Rümker in Oceanus Procellarum in the northwest of the moon’s near side.A successful return to flight of the Long March 5 would also pave the way for the test launch of the Long March 5B, a variant developed for low Earth orbit launches and tasked with lofting 20 metric ton modules for a planned space station. The 5B is slated to perform its test flight around June 2019, according to a statement in March from theChina Manned Space Engineering Office.
The Chinese have finally officially reported on the failure cause 9.5 months after the launch. The 1st stage engine no. 1's turbopump exhaust structure was blamed for failing under "complex thermal conditions" which fatally reduced its thrust at T+346 seconds. ....