<Anchor> The
launch of the Korean projectile Nuri made with our own technology is approaching tomorrow (21st). At over 47 meters in length, the Nuri was moved to the launch pad this morning and put right upright, now awaiting the launch countdown.
Correspondent Han So-hee.
<Reporter> The
Nuriho, which is over 47 meters long, was loaded into a vibration-free vehicle and exited the assembly building at 7:20 am.
It traveled 1.8 kilometers to the launch pad at human walking speed in about 1 hour and 20 minutes.
Afterwards, with the help of a towing device, it stood tall on the launch pad.
Connecting the supply line for fuel and oxidizer, and fixing the lower part of the rocket to the ground so as not to fall over.
If you receive the projectile function check in this way, only the long-awaited countdown remains.
The core technology of the Korean launch vehicle Nuri is contained in the engine.
The single-stage engine, capable of lifting 75 tons of weight at a time, emits 3,500 degrees of flame.
If this heat is transferred to the engine, it can create a dangerous situation. To prevent this, cold fuel is designed to flow over the fuselage surface surrounding the engine.
The so-called 'clustering technology', which combines four 75-ton engines into a balanced 300-ton engine, is also a key technology that will determine the success or failure of the launch.
[Jang Young-geun/Professor of Aerospace Mechanical Engineering, Aviation University: Even if there is even a little thrust, but even one of them (engine) appears slightly different, it cannot go in the desired direction.]
'Gimbaling technology' to
direct the
projectile is also essential.
It finely adjusts the combustor angle of the four engines to determine the direction the rocket is moving.