Les conclusions de l'enquête pourraient être connues d'ici à la fin de l'année.
https://twitter.com/jeff_foust/status/912197913995911168
https://twitter.com/jeff_foust/status/912197913995911168
Will adjust schedules of Chang’e-5 and 4
Gergovi a écrit:Moon Rabit du NSF signale un article payant du 4 octobre qui débute ainsi :
"Chinese space engineers have identified the fault that caused the failure of the second flight of their country’s largest space launcher, Long March 5, a problem that appears to be pushing back the mission schedule by about a year. The cause of the failure was simply a manufacturing defect in one of the two YF-77 hydrogen-burning engines of the core first stage, says a source close to the Chinese industry. The fault was quickly pinned down, says that source, who adds there was nothing ..."
Donc la cause serait identifiée : "uniquement" un défaut de fabrication sur un des moteurs YF-77 du 1er étage ...
Elixir nous en dira sans doute plus bientôt .
(ou Astro-notes ?... ou quelqu'un qui a accès à ce media)
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.
Zhang Hongtai, president of the China Academy of Space Technology (CAST), a developer and maker of satellites and spacecraft, said in March that the Shijian-20 will increase the country’s high-throughput communications satellite capacity to 300 gigabits per second, up from the current 20 Gbps with the predecessor DFH-4. The DFH-5 platform could eventually provide capacity of 1 terabit per second.
Shijian-20 will also carry newly developed high-thrust ion propulsion developed by the Lanzhou Institute of Physics and test out laser communications. With a payload capacity of over 2,000 kilograms and a total mass of around 7 metric tons, the satellite will be one of the largest sent to geostationary orbit.
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.