<Anchor> In the

past, liquid fuel was used for Lake Naro. On the other hand, solid fuel has a good cost-effectiveness and excellent maneuverability. There is also the downside of lower propulsion, but faster injection time and less chance of projectile corrosion.

The military meaning is delivered by Kim Tae-hoon, a defense expert reporter.


President Moon Jae-in, who visited the Defense Research Institute on the 23rd, indicated the success of developing the latest solid fuel missile, Hyunmu-4.

It is known to fly 800 km with a two-tonne warhead, and theoretically, it can raise the reconnaissance satellites in and out of 1.5 tons, which our military is developing, to an altitude of 300 km.

The low orbit of the military reconnaissance satellites is between 500 and 2,000 km.

It means that you can speed up the development of space launch vehicles based on the current affairs.

[Young-Geun Jang/Professor of Korea Aerospace University: If you can assemble 1st, 2nd, 3rd, 4th with that (current solid fuel rocket), it will save time. It will also save cost.] It

has less thrust than liquid fuel, but because it is cheap and stable, using solid fuel makes it easy to lift low-orbit military reconnaissance satellites that look low and detailed.

In addition, Kim Jong-jong, the deputy director of the Security Office, said that the revision of the 800km range will be resolved soon, although the revision is missing.

We hope that the crossroads will be lifted, and the United States might expect China's pressures in the US-China conflict.

Security measures in various countries surrounding the Korean Peninsula may be swaying.