Korea Aerospace Industries KFX

Rappel du premier message :

la Korée serait entrain de développer son propre chasseur furtif indigène KFX comme le japon et son projet ATD-X. il y a peu d'information sur ce futur chasseur, tout ce que j'ai pu trouver sur internet est qu'il aura la taille d'un JSF avec deux moteurs de l'ordre de 115–125 kN. les moteurs étudiés sont:
F414-GE du super hornet
EJ200/EJ230 du typhoon tranche II/III
SNECMA M882/3 du rafale F2/F3



si vous avez plus d'info surtout n'hésitez pas...


   Edit: je pense que le F414-GE qui est étudié est la version EDE+ qui aura 15% de plus que la version actuelle équipant le superhornet

Citation :

Indonesian Engineers to Return to S. Korea for KF-21 Joint Development This Month

11 Agustus 2021


KF-21 Boramae manufacturing (photo : tumbral)

SEOUL (Yonhap) -- Indonesian engineers who left South Korea last year amid speculation the Southeast Asian country was seeking to quit their joint fighter jet development will return this month after Jakarta reaffirmed its commitment to the project, the arms procurement agency said Wednesday.

According to the Defense Acquisition Program Administration, 32 Indonesian engineers are undergoing administrative procedures, such as visa application, to return to the Korea Aerospace Industries headquarters in the southern city of Sacheon.

Indonesia agreed to partner in South Korea's KF-21 project aimed at developing a new fighter jet by 2026, and promised to shoulder 20 percent of the total development cost of 8.8 trillion won (US$7.6 billion), or about 1.7 trillion won.

But Indonesia's 114-strong engineering team returned home in March last year after the country's failure to make payments gave rise to speculation that it could quit the program. Indonesia stopped making payments after investing 227.2 billion won, with around 700 billion won overdue.

The Indonesian government reaffirmed its continued commitment to the KF-21/IF-X joint development, and sought cooperation for its engineers' prompt return to South Korea," the agency said in a release.

South Korea decided to accept the request, despite the unsolved payment issue, in order to swiftly normalize the joint business.

Starting with the 32 engineers, around 100 personnel will be back at the Sacheon plant by the end of the year.

The two countries were seeking to hold another round of negotiations to resolve the payment issue but the meeting could not take place due to the coronavirus situation.

"We will do our best to hold working-level talks as soon as possible and conclude the discussions on the payment issue," Jung Kwang-sun, heading the KF-21 program at the agency, said.

South Korea has been working on the KF-21 project since 2015 to develop a homegrown cutting-edge fighter aircraft to replace the Air Force's aging fleet of F-4 and F-5 jets.

In April, South Korea unveiled a prototype of the gray-colored jet and its official name, KF-21 Boramae.

Ground tests are currently under way and the first flight test is scheduled for next year.

When the development is complete, 40 units are planned to be delivered to the Air Force by 2028 and another 80 units by 2032, officials said.

http://defense-studies.blogspot.com/2021/08/indonesian-engineers-to-return-to-s.html

Citation :

South Korea, Indonesia Move Closer to KF-21 Agreement, Says DAPA

29 Oktober 2021


DAPA has said South Korea and Indonesia are “narrowing the gap” on an agreement
on Jakarta's payments on the programme to develop the KF-21 fighter aircraft, seen
here at the launch of the platform's first prototype (photo : nate.news)


South Korea and Indonesia are edging closer to an agreement about Jakarta's financial commitment to the programme to develop the KF-21 Boramae multirole fighter aircraft, the Defense Acquisition Program Administration (DAPA) in Seoul told Janes.

A DAPA spokesperson said that the two countries remain in talks over Indonesia's payments on the project but that the agency is confident that an agreement can be reached soon. The spokesperson also indicated that once the agreement is in place, Indonesia's position in the KF-21 programme could expand.

“The Republic of Korea and Indonesia are narrowing the gap between each other's position with regards to repayments through a number of negotiations,” said the DAPA spokesperson. “DAPA is very positive that the payment issue will be resolved.”

In 2015 the two countries agreed to invest KRW8.8 trillion (USD7.5 billion) to develop the KF-21, with Indonesia paying 20% of development costs in return for access to technologies and know-how. Under this accord, payments were scheduled to be made by Indonesia through to 2028, but Jakarta ceased these imbursements in March 2020.

Negotiations since then have been aimed at finalising a new repayment structure that Indonesia is willing to adhere to. Pointing to a commitment to the programme, Indonesia sent more than 30 engineers to rejoin the KF-21 programme in August 2021 and their number is expected to grow to approximately 100 by the end of the year. The engineers had ceased work on the programme in 2020 due to the Covid-19 pandemic.

(Jane's)

http://defense-studies.blogspot.com/2021/10/south-korea-indonesia-move-closer-to-kf.html  

Citation :

KAI Prepares for KF-21 First-Flight Milestone

24 Februari 2022


KF-21 Boramae prototype 001 awaiting upcoming flight test at Korea Aerospace Industries (KAI) facility in Sacheon (photos : ROKArmed Forces)

Korea Aerospace Industries (KAI) is on track to conduct the first flight of its KF-21 Boramae multirole fighter aircraft, buoyed by the completed development of the platform's new active electronically scanned array (AESA) radar.

A spokesperson from KAI told Janes on 21 February that the company is preparing a First Flight Readiness Review (FFRR) and is ensuring the preparedness of components and line-replaceable units (LRUs) for the event.

The KF-21's first flight is scheduled for July, the spokesperson confirmed.

The preparation process is supported by continuing flight trials, undertaken by the KF-21 Combined Test Team (CTT) comprising KAI, the Republic of Korea Air Force (RoKAF), and the country's Defense Acquisition Program Administration (DAPA).




The KAI spokesperson said that by June the CTT will be operating six flyable KF-21 prototypes and two structural prototypes for assessments. Of the six flyable aircraft, four are single-seat and two are twin-seat platforms.

“Following common but essential ground and avionics tests and check-outs, each flyable KF-21 prototype is performing different kinds of trials and evaluations,” said the KAI spokesperson. “For example, if prototype number one undertakes an engine-aircraft compatibility test, prototype number three will undertake a ground vibration test.”

However, following the first flight of the aircraft in July, the testing strategy will change. “After the KF-21's first flight, each prototype will have a different flight mission for evaluation,” said the KAI spokesperson without elaborating.

The spokesperson added that the development of an essential element of the new KF-21 fighter – its AESA radar – has been completed and is now undergoing extensive performance assessments.


  http://defense-studies.blogspot.com/2022/02/kai-prepares-for-kf-21-first-flight.html  

Citation :

S. Korea to Test AESA Radar for KF-21 Fighter

07 Maret 2022

Shown a B-737 aircraft equipped with the active electronically scanned array (AESA) radar (photo : Korea Herald)



S. Korea to conduct domestic performance test for advanced radar


South Korea will begin a domestic performance test on a homegrown radar system this month as part of the country's major fighter development project, the state arms procurement agency said Friday.


The military plans to kick off the test program in mid-March for the active electronically scanned array (AESA) radar to be installed on the KF-21 jet currently under development. It is set to run through April next year.


Following an overseas test last year, the program is designed to identify and reduce any unforeseen operational risks through software optimization, DAPA officials said.


The military will mount the radar on a B-737 aircraft for the test program set to check 62 evaluation categories through a total of 50 flight tests. The program includes testing the radar's detection and tracking capabilities in an air-to-air mode.

KF-21 AESA(Active Electronically Scanned Array) Radar (photo : HanwhaSystems)



The military will put the radar on the KF-21 fighter next year to continue its performance test through 2026, DAPA said.


South Korea was the world's 12th country to develop the AESA radar system with homegrown technologies.


South Korea, meanwhile, has been working on the KF-21 project since 2015 to replace the Air Force's aging fleet of F-4 and F-5 jets.


Since April last year, four prototypes of the KF-21 jet have been rolled out for testing purposes under a scheme to produce six of them for the defense project, according to DAPA. 


(KoreaHerald)


DEFENSE STUDIES: S. Korea to Test AESA Radar for KF-21 Fighter (defense-studies.blogspot.com)

Citation :

05/07/2022

Le KF-21 « Boromae » au roulage !

L’avionneur coréen Korea Aerospace Industries (KAI) a débuté les essais de roulage au sol de l’avion de combat KF-21 « Boromae » préparant ainsi le futur vol inaugural de l’avion.

Etat des essais

Selon les premières informations de l’avionneur, l’avion a effectué des essais moteur suivi du roulage et tests de freinage. Une série d’accélération a été également effectuée. Selon le calendrier initial prévu l’avion doit voler d’ici la fin de l’année. Mais il semble que ce dernier pourrait être bien en avance et que le premier puisse être avancé.  En parallèle, les essais en vol sont en cours pour le radar actif à balayage électronique (AESA) à bord d'un Boeing B737-500.

Un projet ambitieux

Le KF-21 « Boromae » est le projet aérospatial le plus ambitieux jamais lancé dans le pays. La Force aérienne prévoit d’en acquérir au moins 120 pour venir remplacer les vieux F-4 « Phantom II » et F-5 E/F « Tiger II » encore en service. L'entrée en service est prévue à partir de 2026 et venir épauler les F-35 et autres F-15 et F-16 modernisés avant de remplacer également ce dernier grâce à des tranches additionnelles.

KAI KF-21 « Boromae »

Le KF-21 est considéré comme un avion de 4,5 ème génération, mais avec des propriétés (capteurs, guerre en réseau) proche du F-35, cependant en moins furtif. La production de masse du KF-21 Block I commencera lorsque six prototypes auront effectué environs 2’200 sorties au cours des quatre prochaines années. Près de 8 milliards de dollars doivent être dépensés pour le développement du KF-21 entre 2015 et 2028 dans le cadre du projet KF-X.

Environ 65% des composants du KF-21 sont en production localement. Parmi les composants construits par les développeurs sud-coréens figurent le radar matriciel actif à balayage électronique (AESA), la suite de guerre électronique, le module de recherche et de suivi infrarouge (IRST) et le module de ciblage électro-optique.

Le radar du KF-21 de type AESA produit par Hanwha Systems, dispose d'un module d'environ 1’088 récepteurs émetteurs, avec un angle de direction du faisceau de 60 à 70 degrés. Le nombre d'émetteurs-récepteurs devrait finalement augmenter à environ 1'300 dans la version finale.

Avec une masse maximale au décollage de 25’600 kilogrammes, l'avion dispose de 10 points d’accrochage pour les missiles air-air et autres armements. Contrairement aux premières spécifications l’avion volera à Mach 1,8 avec une distance de croisière de 2’900 kilomètres. Il est propulsé par deux moteurs General Electric F414.

Photos : KF-21 @ KAI Aerospace



Le KF-21 « Boromae » au roulage ! : avia news (24heures.ch)

Je le pensais avion de 5ème génération mais visiblement non il est 4.5 à cause du manque de furtivite il n'a pas d'armement en interne.

Citation :

19/07/2022

Vol inaugural pour le KF-21 « Boromae » !

L’avionneur coréen KAI Aerospace vient de réaliser le vol inaugural de son avion de combat KF-21 « Boromae ». L'avion a décollé d'une base de l'armée de l'air sud-coréenne ce mardi vol à Sacheon, à environ 300 kilomètres au sud de Séoul. Ce vol planifié ce matin a été reporté pour cause de météo incertaine dans l’après-midi.

Le KF-21 Boramae, le premier chasseur à réaction supersonique avancé de Corée du Sud, a terminé avec succès son premier essai en vol mardi plus de six ans après le lancement du programme de développement.

Le prototype KF-21 a décollé à 15h40, a volé pendant durant 33 minutes et a atterri à 16h13 à l'heure de Séoul à une vitesse d'environ 400 kilomètres à l'heure. L’avion à réaction était équipé de quatre maquettes de missile MBDA METEOR.

KAI KF-21 « Boromae »

En décembre 2015, DAPA a signé le contrat de développement du chasseur avec KAI. Le KF-21 est considéré comme un avion de 4,5 ème génération, à égalité avec le dernier F-16 et moins furtif que le F-35 Lightning II de cinquième génération développé par Lockheed Martin. L'avion de combat doit remplacer la flotte vieillissante des F-4E « Phantom » et F-5E « Tiger II »de l'époque de la guerre du Vietnam.

KAI a déclaré que l'avion subirait des tests au sol cette année avant son vol inaugural prévu pour juillet de l'année prochaine. La production de masse du KF-21 Block I commencera lorsque six prototypes auront effectué environs 2’200 sorties au cours des quatre prochaines années. Près de 8 milliards de dollars doivent être dépensés pour le développement du KF-21 entre 2015 et 2028 dans le cadre du projet KF-X.

Environ 65% des composants du KF-21 sont en production localement. Parmi les composants construits par les développeurs sud-coréens figurent le radar matriciel actif à balayage électronique (AESA), la suite de guerre électronique, le module de recherche et de suivi infrarouge (IRST) et le module de ciblage électro-optique.

Le radar du KF-21 de type AESA produit par Hanwha Systems, dispose d'un module d'environ 1’088 récepteurs émetteurs, avec un angle de direction du faisceau de 60 à 70 degrés. Le nombre d'émetteurs-récepteurs devrait finalement augmenter à environ 1'300 dans la version finale.

Avec une masse maximale au décollage de 25 600 kilogrammes, l'avion dispose de 10 points d’accrochage pour les missiles air-air et autres armements. Contrairement aux premières spécifications l’avion volera à Mach 1,8 avec une distance de croisière de 2’900 kilomètres. Il est propulsé par deux moteurs General Electric F414.

Photos : KF-21 lors de son vol inaugural @ KAI


Vol inaugural pour le KF-21 « Boromae » ! : avia news (24heures.ch)

Citation :

S. Korea seeks to achieve supersonic speeds of homegrown KF-21 fighter this month: sources

Defense18:02 January 05, 2023
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By Song Sang-ho

SEOUL, Jan. 5 (Yonhap) -- South Korea plans to conduct a test of its homegrown KF-21 fighter to achieve supersonic speeds this month should the weather permit, multiple sources said Thursday, in what would be a key milestone in the high-profile warplane development project.

Securing the supersonic capability is a major part of the development efforts, led by its manufacturer, Korea Aerospace Industries Ltd. (KAI), as it means key functions, including avionics, work smoothly irrespective of flight speeds.

"We plan to conduct the test (for supersonic speeds) sometime in January, but we cannot tell you the exact date as it could be pushed back due to weather conditions," the source told Yonhap News Agency on condition of anonymity.

On Thursday, the third prototype of the fighter successfully conducted its maiden flight, signaling progress in the high-profile fighter project. The testing authorities plan to conduct some 2,000 flight tests through February 2026.

Launched in 2015, the KF-21 project worth 8.8 trillion won (US$6.9 billion) seeks to develop the 4.5th-generation fighter to replace the country's aging fleet of F-4 and F-5 jets waiting to be decommissioned following decades of service.

This photo, provided by the Defense Acquisition Program Administration on Jan. 5,

2023, shows the third prototype of the KF-21 fighter taxiing on a runway in Sacheon,

about 300 kilometers south of Seoul. (PHOTO NOT FOR SALE) (Yonhap)

S. Korea seeks to achieve supersonic speeds of homegrown KF-21 fighter this month: sources | Yonhap News Agency (yna.co.kr)

Citation :

LAST UPDATED: 20 FEBRUARY 2023




First flight KF-21 two-seater


Korean Aerospace Industries (KAI) KF-21 Boramae (Hawk) number 004 is the first two-seat version of the 4.5-generation jet to fly.
The two-seater performed its first 34-minutes maiden flight from Sacheon on 20 February 2022. The KF-21 is formerly known as the Korean Fighter eXperimental (KF-X) and the platform could be used for further development and conversion into a 5th-generation one with improved stealth technologies.
So far four of the KF-21 versions have started flight tests, some 110 flights were carried out, the fifth (single seat) and sixth (two-seat) prototypes are scheduled to have their maiden flight also in the first half of 2023.
The dual-seat KF-21, beside training, will be developed into an electronic warfare aircraft and it is envisioned that Unmanned Aerial Vehicles will be controlled from the rear-seat for battlefield drone missions.
Full scale manufacturing is scheduled to begin in 2026. South Korea expects to deploy 40 jets by 2028 and 120 by 2032.
With the Dae Han Min Guk Gong Gun (RoKAF, Republic of Korea Air Force), the new fighter will replace the ageing fleet of F-4E Phantom II and F-5E/F Tiger II aircraft. It is not known yet how many two-seat KF-21 Boramae (of the 160 aircraft) the RoKAF intends to order.



Photo: still from MBC News video



First flight KF-21 two-seater (scramble.nl)

Two major missiles for KF-21 fighter jet will have multi-role capabilities.
'Skydragon' Long range Stealth Air Launched Cruise Missile(ALCM) will have anti ship capabilities, while the Supersonic Anti Ship missile will have land strike capabilities.
New Anti-Radiation missile,… pic.twitter.com/Y0MBxkLd2h

— ハク Mason (@mason_8718) October 2, 2023

Air launched ballistic missile for the KF-21 fighter.
They will Modified big KTSSM as ALBM. Hyunmoo-IIA? pic.twitter.com/oT1qPkt12F

— ハク Mason (@mason_8718) October 2, 2023

There are more interesting missiles for the KF-21 behind.
Air launched hypersonic interceptor.
Something like Air launched L-SAM-I. pic.twitter.com/MKAUDurdTU

— ハク Mason (@mason_8718) October 2, 2023

semoga segera lunas https://t.co/kwJb7Q6rBQ

— Indonesia Military News Observer (@MilitaryObs_ID) October 17, 2023

Un futur best seller ! J'envie les UAE et surtout l'Egypte d'avoir intégrés le programme.

Effectivement, dommage que nous n'intégrions pas ce genre de programmes !

SEOUL #ADEX2023 DEMO FLIGHT BY KF-21.#Boramae is not a complete stealth fighter, but is positioned as a 4.5 generation fighter, and its missiles are semi-embedded. pic.twitter.com/mj08sZibpE

— International Defence Analysis (@Defence_IDA) October 26, 2023

Citation :

La Corée du Sud envisage de réduire la production d’avions de combat KF-21

NOUVELLESAVIATION Par Gu Min Chul

1 novembre 2023


Photo de Korea Aerospace Industries


Une agence de recherche sud-coréenne sur la défense a recommandé de réduire la production d’avions de combat KF-21.

Les inquiétudes concernant la compétitivité des prix et les incertitudes entourant le projet sud-coréen KF-21 Boramae ont incité l’Institut coréen d’analyse de la défense à recommander de réduire le volume de production initial.

Le plan initial prévoyait la production de 120 avions de combat KF-21 d’ici 2032, mais cela pourrait maintenant être réduit.

Lancé en 2015 avec un budget de 8,9 billions de wons (environ 6,59 milliards de dollars), le projet KF-21 a été lancé pour développer un chasseur supersonique destiné à remplacer les avions F-4 et F-5 vieillissants de la Corée du Sud. Cependant, en raison des incertitudes liées au projet, l’Institut coréen d’analyse de la défense a suggéré de réduire de moitié le nombre d’unités du premier lot, à 20 unités.


Photo de Korea Aerospace Industries


Les résultats de l’étude de faisabilité joueront un rôle crucial dans l’obtention des ressources budgétaires pour la production de la première phase, qui devrait commencer en 2024. La Defense Acquisition Program Administration (DAPA) collabore actuellement avec les agences compétentes pour assurer le déploiement en temps opportun du KF-21 et maintenir sa compétitivité en termes de prix et de performances.

Korea Aerospace Industries a développé six prototypes du chasseur de 4,5e génération, qui ont commencé leurs essais en vol plus tôt cette année, la première livraison à l’armée de l’air étant prévue pour le second semestre 2026.


https://defence-blog.com/south-korea-plans-to-reduce-kf-21-fighter-jet-production/  

Citation :

 JAN 4

South Korea's KAI KF-21 Boromae stealth fighter to enter mass production in 2024


According to Newsis on December 21, 2023, South Korea's Ministry of National Defense recently announced an increase in its defense budget for
the year 2024, totaling 59.42 trillion won (approximately $50.2 billion), which represents a 4.2% rise from the previous year. This budget includes
funding for the mass production of the KF-21 Boramae fighter jet, a key component of South Korea's defense strategy.


The KF-21, armed with a 20 mm M61A2 Vulcan rotary autocannon, features a variety of hardpoints for carrying air-to-air and air-to-surface
missiles, precision-guided bombs, and anti-ship missiles (Picture source: KAI)


https://worlddefencenews.blogspot.com/2024/01/south-koreas-kai-kf-21-boromae-stealth.html

Citation :

Le prototype de l’avion de chasse KF-21 effectuera le 1er test de missile Meteor
Par Kim Eun-jung

SEOUL, 7 mai (Yonhap) -- L’avion de combat sud-coréen KF-21 en cours de développement s’apprête à effectuer son premier test de tir réel avec des missiles air-air Meteor à longue portée cette semaine, ont déclaré mardi des sources.

Un prototype du KF-21 doit effectuer le test au-dessus des eaux au large de la côte sud du pays mercredi, selon des sources proches du dossier.

En mars 2023, deux prototypes d’avions ont réussi à séparer les missiles d’essai Meteor en plein vol.

Si le test est mené avec succès, il devrait étendre la longue portée du KF-21 et démontrer ses capacités d’interception.

Un test réussi permettrait au KF-21 de rejoindre les rangs de certains avions de combat, dont l’Eurofighter Typhoon, le Rafale et le Gripen, en réalisant cet exploit.

Le missile Meteor est capable de voler à plus de Mach 4, soit quatre fois la vitesse du son, et peut intercepter des cibles à plus de 200 kilomètres de distance. Il mesure 3,6 mètres de long, 17,8 cm de diamètre et pèse 185 kg.

Chaque KF-21 peut transporter jusqu’à quatre missiles Meteor, le déploiement devant commencer le mois prochain.

Korea Aerospace Industries Ltd. prévoit de construire 20 KF-21 cette année et d’en produire 20 autres l’année prochaine.

Si le projet se déroule comme prévu, l’armée de l’air devrait recevoir son premier KF-21 au second semestre 2026 pour remplacer sa flotte vieillissante de jets F-4 et F-5.


https://en.yna.co.kr/view/AEN20240507006900315?section=national/defense

Citation :

  Korean official floats possibility of dropping Indonesia from KF-21 development

By Greg Waldron12 June 2024

The head of South Korea’s Defense Acquisition Program Administration (DAPA) has mooted the possibility of dropping Indonesia from the joint Korea Aerospace Industries KF-21 fighter programme.

In an interview with the Korea JoongAng Daily, DAPA chief Seok Jong-gun says that Jakarta’s continued participation could hinge on an investigation that Indonesian engineers allegedly stole sensitive programme data.


Source: Greg Waldron/FlightGlobal

Indonesia’s continued participation in the programme is unclear


“If the investigation results show that a significant technology leak has occurred, we would reconsider co-operating at all in joint development,” says Seok.

“We will continue coordinating which technologies will be transferred to Indonesia, but the actual technology will be transferred through consultation only after development is completed in 2026. Only a small portion of the technology has been transferred to date, and it is at a rudimentary level.”

The alleged data theft by Indonesian engineers working in South Korea first came to light in January. The incident resulted in a probe by South Korean counterintelligence, and a police investigation is under way. In February, reports suggested that the Indonesians allegedly responsible have been forbidden from leaving South Korea.

As uncertainty surrounds Indonesia’s involvement, work on the KF-21 continues apace. In May, the KF-21 conducted a live firing of the Diehl Defence IRIS-T air-to-air missile, following air-to-air refuelling tests carried out in March.

The interview touches on another sticking point between the two partners: Indonesia’s tardiness with payments. It suggests that DAPA has agreed to reduce Indonesia’s contribution to W600 billion from the roughly W1.6 trillion it originally agreed to pay in the W8.8 billion development programme.

In return for the reduced payments, however, Seok indicates that DAPA decided to lower the level of technology transfer.

“In the joint development with Indonesia, we promised a technology transfer and provision of prototypes in return for their contribution, but Indonesia is in a tough financial spot, so they will only pay [W600 billion] and receive less,” he says.

Given Indonesia’s payment status, South Korea has also not stuck with the previous plan to transfer one of the six KF-21 prototypes to the Southeast Asian nation. Seok indicates that gives South Korea some leverage over payments.

“For us, it is more important to properly complete the system development of the KF-21 by 2026, which is the scheduled timeline.”

FlightGlobal understands that Indonesia has been generally unhappy with the level of technology transfer so far.

Despite the challenges the two partners have faced, Seok points out that Indonesia remains an important market in the heart of Southeast Asia, with commitments to buy 48 KF-21s – designated the ‘IFX’ in Indonesia.

Nonetheless, one area of potential concern for South Korea is Jakarta’s commitment to other fighters, specifically firm orders for 48 Dassault Rafales, as well as a potential deal to obtain 24 Boeing F-15EXs.


https://www.flightglobal.com/defence/korean-official-floats-possibility-of-dropping-indonesia-from-kf-21-development/158734.article