The Korean launch vehicle Nuri (KSLV-II) arrived at the launch pad at the Naro Space Center in Goheung-gun, Jeollanam-do at around 8:44 am on the 20th, the Korea Aerospace Research Institute (KAI) announced.
During the morning of this day, the Nuri will be erected vertically on the launch pad with the help of an erector, which is a standing device, and then fixed to the launch pad.
The lower part of the Nuriho is tightly tied using a vehicle holding device (VHD) with four rings.
The VHD holds the Nuri unshaken and releases it when the rocket engine reaches its maximum thrust just before launch.
Earlier, at 7:20 am on the same day, Nuri was loaded into an unmanned special mobile vehicle (transporter) and left the launch vehicle assembly building in the Naro Space Center and moved to the launch pad for 1 hour and 24 minutes.
The distance from the assembly building to the launch pad was very close at 1.8 km, but the transporter carrying the Nuri was moving slowly at 1.5 km per hour.
In the afternoon of this day, the ‘umbilical connection’ to supply power to the Nuri and to charge propellants such as fuel (kerosene) and oxidizer (liquid oxygen), and to identify whether there is a possibility of fuel clogging or leakage during the charging process The launch preparation work, such as a ‘confidential check’, continues.
It is expected that the installation of the launch pad will be completed before 7:00 pm on the same day unless there is any special abnormality in the process of transferring and standing the launch pad.
The Ministry of Science and ICT will hold the Nuri launch management committee on the morning of the 21st, the scheduled launch date, to decide whether or not to charge the Nuri with propellant.
In the afternoon, the launch management committee will be held once again to comprehensively review the technical preparation status, weather conditions, and the possibility of colliding with space objects to determine the launch time of the Nuri.
Currently, the most likely launch time is at 4 pm on the 21st.
Prior to this, the Ministry of Science and ICT and the Korea Institute of Science and Technology were preparing for the second launch of the Nuri on the 16th, but on the 15th, they put the Nuri on the launch pad, but postponed the schedule and sent it back to the assembly building. It was taken as an abnormality was found in the level sensor signal of the first stage oxidizer tank at 2:05 pm on the 15th. After that, the Ministry of Science and ICT and the Korea Institute of Science and Technology replaced the defective part on the 17th and set the launch date again to the 21st.
Source: 경제 by www.segye.com.
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