<Anchor>



Nuri's plan to leave for space has been delayed by one day.

In Goheung, Jeollanam-do, where her launch pad is located, the wind was so strong that the rocket could not be set up as planned, so the Nuri's second challenge was postponed to Thursday, the day after tomorrow (16th).



In this way, reporter Seo Dong-gyun pointed out the variables that affect the launch.



<Reporter> The



Nuri was supposed to come out of the projectile assembly building today and be set up on the launch pad.



But the wind caught my ankle.



A very strong wind of 8 m/s, instantaneously 16.7 m/s, blew at the Naro Space Center in Goheung, Jeollanam-do.



[Oh Seung-hyeop / Aerospace Research Institute Launch Vehicle Propulsion Agency Development Department: Greater gusts of wind can be expected from the umbilical tower (launcher) at an altitude of about 48m, so the safety of workers was further considered.]



Move the Nuri and fix it on the launch pad As the task of letting go was pushed back to tomorrow, the launch was also delayed by one day the next day.



So, what are the weather variables that affect the launch of the Nuri?



Let's start with the wind.



If there is a strong wind above 15 m/s on the ground, the launch may be delayed.



Because we cannot guarantee the safety of the workers working on the launch pad.



You should also be careful about winds blowing from 5 to 20 km above the sky.



If the speed exceeds 70 m/s, the flight path is affected, and if the speed exceeds 100 m/s, the rocket may fly to the wrong place.



Clouds such as cumulonimbus clouds that produce lightning should also be watched.



What you see now is a lightning rod around the launch pad, protecting the projectile from billions of volts of lightning.



How to prevent sudden lightning strikes during flight?



The answer lies in paint.



Conductive paint prevents electricity from entering the rocket and allows it to flow out.



It's not without danger though, so you'll catch a blade that isn't likely to be struck by lightning and fire it.



In fact, in 1987, the American Atlas was struck by lightning in the clouds 49 seconds after launch.



The Atlas behaved erratically and failed to reach her target orbit, and NASA detonated it mid-air.



Fortunately, tomorrow and the day after tomorrow, the weather at the launch site is predicted to be good, so the Nuri will be moved to the launch pad tomorrow and prepare for the final launch.



(Video coverage: Kim Dae-cheol, Choi Bok-soo KBC, video editing: Yoon Tae-ho, CG: Seo Dong-min)