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SgtGungHo

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Feb 25, 2020
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hi, can someone explain about aesa radar developed for kfx? is it based on GaN?
Yes, it is. Even better, it might be ending up being based on GaN-on-diamond technology. KDDX-class destroyer is already confirmed to have AESA radar with GaN-on-diamond either ways. However, don't get your hope too high. There was news said that Hanwha's radar is performing worse than it had been expected. Of course, it could be the case that their expectation was ridiculously high to begin with as they wanted something that matches performance of AN/APG-83.
 

ACE OF HEARTS

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Yes, it is. Even better, it might be ending up being based on GaN-on-diamond technology. KDDX-class destroyer is already confirmed to have AESA radar with GaN-on-diamond either ways. However, don't get your hope too high. There was news said that Hanwha's radar is performing worse than it had been expected. Of course, it could be the case that their expectation was ridiculously high to begin with as they wanted something that matches performance of AN/APG-83.
Sir can you explain, if possible, how does GaN radar of Kfx stack up against GaN of Saab's Gripen Fighter?
 

Galactic Penguin SST

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This is the year when the European Sun finally sets, superseded by the East Asian superpowers!

With the return of the Japanese Hayabusa-2 Asteroid Sampling Mission expected on 6th December 2020, followed by China's Chang'e 5 Lunar Sampling Return a week later, South Korea rolls out the first stage of its KSLV-2 satellite carrier, to become the 4th East Asian space power (after China, Japan and North Korea).



KSLV-II FM(Flight Model) payload fairing, first and second stage interstage - completed!

Now for the first stage static fire. Four KRE-075 engines will be ignited at the same time. 300 tons of thrust!

9:28 AM · Nov 28, 2020
https://twitter.com/kari2030/status/1332602173834756098



https://archive.vn/FITWS/227522e1cd32fc76283eb27cd000828d7cb0ef51.jpg ; https://archive.vn/FITWS/c410a278b9453a59aac435d624175f0a5226ff20/scr.png ; https://pbs.twimg.com/media/EoMNNRpUwAAMsKK?format=jpg&name=large
1. KSLV-2 Flight Model first stage.


https://archive.vn/n78yI/081f44a2e235df6819cd3815408b9dbc4480ca26.jpg ; https://archive.vn/n78yI/d0e87edd2773b684702ae18aa4ab4ccef640da37/scr.png ; https://pbs.twimg.com/media/EoMNN5VUwAAWSbv?format=jpg&name=900x900
2. KSLV-II FM (Flight Model) payload fairing, first and second stage interstage.


https://archive.vn/Ebu70/673d6560d1b33a525f4f208e60d1334ff58c25a4.jpg ; https://archive.vn/Ebu70/3c701235b9dcc1ca81be70e71233f360315713db/scr.png ; https://pbs.twimg.com/media/ER_EWoWUYAAGoC3?format=jpg&name=large
3. 75 ton thrust KRE-075 engine powering the first stage (in cluster of 4 totalling 300 tons at liftoff).


https://archive.is/PdznE/669ebfa247113678ab50fe2520793b47345b8692.jpg ; https://archive.is/PdznE/ed0ae75214172d12f096280c139415bda8d555a5/scr.png ; https://pbs.twimg.com/media/EW62-k8U4AEfI4x?format=jpg&name=large
4. KSLV-2 launch scheduled for February 2021.


North korean Unha-9 and its direct competitor the South Korean KSLV-II launcher. Both will be launched next year.


https://archive.vn/91yEL/e836cf89073be21597f74d15d80e9805a28cfee4.jpg ; https://archive.vn/91yEL/34f1f4cd565f30f0aecc78dedff394b4efb67503/scr.png ; http://web.archive.org/web/20201015204641/https://i.imgur.com/9dBgppW.jpg
5. Unha-9 and KSLV-II both of 200 tons powered by 4 main engines.






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Galactic Penguin SST

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Supporting Korea's Lunar Exploration Program (KLEP), the completion of the deep space tracking ground station, which is the largest in Korea, with a single dish radio antenna of 35 meters diameter!

The deep space ground station plans to play a key role in performing space exploration missions by communicating with the Korean lunar orbiter, which will operate on the moon at a distance of about 384'400 km, and controlling its trajectory for lunar orbit insertion.


https://archive.vn/Ejxcc/f015e74c8772a8571421bf77ea5a3d75841272c3.jpg ; https://archive.vn/Ejxcc/ae1e6cc10e4cd70a57450b9f4caece19cd9d54af/scr.png ; http://web.archive.org/web/20201212065943/https://pbs.twimg.com/media/Eo7sSINVQAEDEnC?format=jpg&name=large ; https://twitter.com/kari2030/status/1337265949355884550
1. Supporting Korea's Lunar Exploration Program (KLEP), the completion of the deep space tracking ground station. Dec 11, 2020





:cool:🚬
 

Galactic Penguin SST

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South Korea about to join the most elite club of military great powers in becoming the only 8th nation in the World with Submarine Launched Ballistic Missiles (SLBM) capability, after the U.S., U.S.S.R., U.K., France, China, India, and North Korea.

Great development for the World as this will further break the SLBM monopoly of the 4 ethnic European powers with 4 Asian powers! To be definitely offset in the future, with the accession of a 5th power, when Iran tests its own!


https://archive.vn/5kWnl/07bef765ee3ec1ab391d2234e9fa37c67fff3c25.jpg ; https://archive.vn/5kWnl/6e15c6bc4308fede950c150b6653b9e546905248/scr.png ; http://web.archive.org/web/20201018...age/1397/03/23/13970323124050939144161910.jpg
1. Official poster distributed by Iran's Supreme leader hinting at a first ever SLBM test ! Roughly translated as "They will fire one - and will get 10 times over". 2020.

South Korea plans underwater test of indigenous SLBM

January 13, 2021

SEOUL, Jan. 13 (Yonhap) -- South Korea is expected to carry out underwater tests of a home-grown submarine-launched ballistic missile (SLBM) this year, having concluded ground tests, a source said Wednesday.

South Korea is developing an SLBM based on the home-grown ground-to-ground Hyunmoo-2B ballistic missile with a flight range of around 500 kilometers. It will be used with envisioned 3,000-ton-class or larger submarines, according to defense officials.

"Related agencies wrapped up ejection tests of the missile on the ground last year. They are to move on to the next stage of conducting underwater test launches," a military source said.

It is yet to be decided exactly when and on which platform to carry out the tests, he added. It could either be a submersible test barge or a submarine.


Currently, South Korea operates nine 1,200-ton-class submarines and nine 1,800-ton ones.

It is working on a project to build three 3,000-ton-class Changbogo-III Batch-I submarines by 2023. The first one, the Dosan Ahn Chang-ho, was launched in 2018 and is to be put into operational deployment this year, and the second one, named Ahn Mu, was launched in November. Both are equipped with six vertical launching tubes capable of firing SLBMs.

The country is also eyeing to build 4,000-ton-class next-generation submarines, with some speculating that the military might weigh equipping them with a nuclear-powered engine.

http://web.archive.org/web/20210114104146/https://en.yna.co.kr/view/AEN20210113011800325?section=national%2Fdefense
https://archive.vn/43TUz


https://archive.vn/OvNw6/dc382a42241f28da60ec3aaa4b95868f6f2aa115.jpg ; https://archive.vn/OvNw6/6696007eea37cd2a7558a63ec83322eae41f98a5/scr.png ; http://web.archive.org/web/20210114102753/http://english.chosun.com/site/data/img_dir/2021/01/14/2021011401495_0.jpg ; http://web.archive.org/web/20210114...e/data/html_dir/2021/01/14/2021011401506.html ; https://archive.is/QbF9B
2. A Korean-made 3,000-ton submarine is docked at a shipyard in Geoje, South Gyeongsang Province, in this file photo from September 2018.

And according to the old U.S. playbook, following Japan, India and Israel, South Korea will test dual-use civilian-military technologies of Post Boost Vehicle an essential component of its nuclear deterrent, under the guise of a lunar orbiter in July 2022!

Korea Pathfinder Lunar Orbiter (KPLO)

The Korea Pathfinder Lunar Orbiter (KPLO) is South Korea's first lunar mission. It is developed and managed by the Korea Aerospace Research Institute (KARI) and is scheduled to launch in July 2022 to orbit the Moon for 1 year carrying an array of South Korean experiments and one U.S. built instrument. The objectives are to develop indigenous lunar exploration technologies, demonstrate a "space internet", and conduct scientific investigations of the lunar environment, topography, and resources, as well as identify potential landing sites for future missions.
Spacecraft and Subsystems

The spacecraft has a cubic shape with two solar panel wings and a parabolic antenna mounted on a boom. The total mass is 550 kg. Communications are via S-band (telemetry and command) and X-band (payload data downlink). Power (760 W at 28 V) is provided through the solar panel arrays and rechargeable batteries. A monopropulsion system is used, with four 30N orbital maneuver thrusters and four 5N attitude control thrusters. KPLO is equipped with five science instruments and a Disruption Tolerant Network experiment. The five experiments are a Lunar Terrain Imager (LUTI), a Wide-Angle Polarimetric Camera (PolCam), a Magnetometer (KMAG), a Gamma-Ray Spectrometer (KGRS), and a high-sensitivity camera developed by NASA (ShadowCam). Total scientific payload mass is about 40 kg.
Mission Profile

KPLO is scheduled to launch in July 2022 from Cape Canaveral on a SpaceX Falcon 9 Block 5 into a 300 km Earth orbit, followed by a translunar injection burn and a one month lunar transfer phase. After capture into an elliptical lunar orbit, it will circularize to a 100 km nominal polar orbit (+-30 km), from which it will conduct science operations for approximately one year. If the mission has an extended phase, it will descend to a 70 km orbit or lower.

http://web.archive.org/web/20201210221218/https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=KPLO







:cool:🚬
 

Galactic Penguin SST

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https://archive.is/omjt3/8d2b79cdd0fb90bc91af9ec69f27761e48837a6a.jpg ; https://archive.is/omjt3/a1f399328ad6d95c98ad3a7a1b3dd5f505cf70a5/scr.png ; http://web.archive.org/web/20210127230821/https://pbs.twimg.com/media/EqZLa-XUcAIL5wk?format=jpg&name=4096x4096
1. The first launch of the KSLV-II has been postponed to November 2021. The reason is: modification of the assembly procedure, delay in parts delivery, need for more time in stage assembly, and the need for Wet Dress Rehearsal. Second launch is May 2022.

Following North Korea's static test of its 80-tf Paektusan-1D engine powering the Unha-9 SLV, of 7th December 2019 and 13th December 2019 lasting 420 seconds, South Korea will test the entire first stage of its KSLV-II (NURI) SLV with all 4 KRE-075 engines delivering 300 tons of thrust.

11:34 AM · Jan 25, 2021·
https://twitter.com/Kor_Spaceflight/status/1353868752417218560


An a SUCCESSFUL hot fire test of KSLV-II first stage on 28th January 2021: 4 KRE-075 engines were fired simultaneously at the Naro Space Center.

8:37 AM · Jan 28, 2021·Twitter Web App
Korean launch vehicle Nuri 1st stage first successful combustion test!
We are unveiling the 300-ton class combustion test site with four 75-ton class engines.
http://web.archive.org/web/20210129003402/https://twitter.com/Kor_Spaceflight/status/1354712554635816961
https://archive.is/CL28U


11:50 AM · Jan 28, 2021·Twitter Web App
This is a close-up video of the first stage combustion test of the Nouri Rocket
http://web.archive.org/web/20210129003404/https://twitter.com/kari2030/status/1354743540966780929
https://archive.vn/3r2yX







:cool:🚬
 
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