KAI T-50 Golden Eagle
|T-50 Golden Eagle|
|A Republic of Korea Air Force FA-50|
|Role||Advanced trainer (T-50), Lead-in fighter trainer/Light combat aircraft (TA-50) / Multirole fighter (FA-50)|
|National origin||South Korea / United States|
|Manufacturer||Korea Aerospace Industries / Lockheed Martin|
|First flight||20 August 2002|
|Introduction||22 February 2005|
|Primary users||Republic of Korea Air Force
Indonesian Air Force
Philippine Air Force
Iraqi Air Force
The KAI T-50 Golden Eagle (골든이글) is a family of South Korean supersonic advanced trainers and light combat aircraft, developed by Korea Aerospace Industries (KAI) with Lockheed Martin. The T-50 is South Korea's first indigenous supersonic aircraft and one of the world's few supersonic trainers. Development began in the late 1990s, and its maiden flight occurred in 2002. The aircraft entered active service with the Republic of Korea Air Force (ROKAF) in 2005.
The T-50 has been further developed into aerobatic and combat variants, namely T-50B, TA-50, and FA-50. The F-50 single-seat multirole fighter variant was considered. The T-50B serves with the South Korean air force's aerobatics team. The TA-50 light attack variant has been ordered by Indonesia. The Philippines ordered 12 units of the FA-50 variant. The T-50A is being marketed as a candidate for the United States Air Force's next-generation T-X trainer program. Thailand ordered 12 units of the T-50 advanced trainer variant.
- 1 Development
- 2 Design
- 3 Operational history
- 4 Variants
- 5 Operators
- 6 Accidents and incidents
- 7 Specifications
- 8 See also
- 9 References
- 10 External links
The T-50 program was originally intended to develop an indigenous trainer aircraft capable of supersonic flight, to train and prepare pilots for the KF-16 and F-15K, replacing trainers such as T-38 and A-37 that were then in service with the ROKAF. Prior South Korean aircraft programs include the turboprop KT-1 basic trainer produced by Daewoo Aerospace (now part of KAI), and license-manufactured KF-16. In general, the T-50 series of aircraft closely resembles the KF-16 in configuration.
The mother program, code-named KTX-2, began in 1992, but the Ministry of Finance and Economy suspended KTX-2 in 1995 due to financial constraints. The basic design of the aircraft was set by 1999. The development of the aircraft was funded 70% by the South Korean government, 17% by KAI, and 13% by Lockheed Martin.
The aircraft was formally designated as the T-50 Golden Eagle in February 2000. The T-50A designation was reserved by the U.S. military to prevent it from being inadvertently assigned to another aircraft model. Final assembly of the first T-50 took place between 15 January and 14 September 2001. The first flight of the T-50 took place in August 2002, and initial operational assessment from 28 July to 14 August 2003.
KAI and Lockheed Martin are currently pursuing a joint marketing program for the T-50 internationally. The ROKAF placed a production contract for 25 T-50s in December 2003, with aircraft scheduled to be delivered between 2005 and 2009. Original T-50 aircraft are equipped with the AN/APG-67(v)4 radar from Lockheed Martin. The T-50 is equipped with a GE F404 engine with Full Authority Digital Engine Control (FADEC) built under license by Samsung Techwin. Under the terms of the T-50/F404-102 co-production agreement, GE provides engine kits directly to Samsung Techwin who produces designated parts as well as performing final engine assembly and testing.
The program has expanded beyond a trainer concept to include the TA-50 light attack aircraft and the FA-50 light combat aircraft, similar to the multirole KF-16.[vague] The TA-50 variant is a more heavily armed version of the T-50 trainer, intended for lead-in fighter training and light attack roles. It is equipped with the Elta EL/M-2032 fire control radar. The TA-50 is designed to operate as a full-fledged combat platform for precision-guided weapons, air-to-air missiles, and air-to-ground missiles. The TA-50 can mount additional utility pods for reconnaissance, targeting assistance, and electronic warfare. Reconnaissance and electronic warfare variants are also being developed, designated as RA-50 and EA-50.
The FA-50 is the most advanced version of the T-50, possessing more internal fuel capacity, enhanced avionics, a longer radome and a tactical datalink. It is equipped with a modified Israeli EL/M-2032 pulse-Doppler radar with Korean-specific modifications by LIG Nex1. The engine could be either Eurojet EJ200 or General Electric F414, upgraded to 20,000 lb or 22,000 lb thrust, roughly 12–25% higher than the F404's thrust; and are offered to prospective customers for the T-50. The radar of the FA-50 has a range two-thirds greater than the TA-50's radar. The EL/M-2032 was initially chosen over Lockheed Martin's preferred AN/APG-67(V)4 and SELEX Vixen 500E active electronically scanned array (AESA) radars. Other AESA radars such as Raytheon Advanced Combat Radar and Northrop Grumman's Scalable Agile Beam Radar are options for future production, and may be shared with the radar chosen for USAF and ROKAF F-16 fighters. Samsung Thales is also independently developing a domestic multi-mode AESA radar for the FA-50.
In December 2008, South Korea awarded a contract to KAI to convert four T-50s to FA-50 standard by 2012. In 2012, the ROKAF ordered 20 FA-50 fighters to be delivered by the end of 2014. The maiden flight of the FA-50 took place in 2011. 60 FA-50 aircraft are to be produced for the ROKAF from 2013 to 2016. KAI received a 1.1 trillion won ($1 billion) order for FA-50 fighter aircraft in May 2013.
In December 2015, KAI announced and revealed the new KAI-LM T-50 T-X upgrade intended to compete in the U.S. T-X program that will start testing in 2016. This variant features a dorsal hump for extra internal fuel and an aerial refuelling receptacle, large area display (LAD), and embedded ground training systems.
In October ADEX 2017, KAI unveiled the T-50A as a new variant based on the FA-50 multirole combat aircraft. Including fifth generation cockpit, an aerial refuelling receptacle, cockpit multifunction display, dorsal hump for extra internal fuel, and an embedded training suite at the ADEX 2017.
The T-50 Golden Eagle design is largely derived from the F-16 Fighting Falcon, and they have many similarities: use of a single engine, speed, size, cost, and the range of weapons. KAI's previous engineering experience in license-producing the KF-16 was a starting point for the development of the T-50.
The trainer has seating for two pilots in a tandem arrangement. The high-mounted canopy developed by Hankuk Fiber is applied with stretched acrylic, providing the pilots with good visibility, and has been tested to offer the canopy with ballistic protection against 4-lb objects impacting at 400 knots. The altitude limit is 14,600 metres (48,000 ft), and airframe is designed to last 8,000 hours of service. There are seven internal fuel tanks with capacity of 2,655 litres (701 US gal), five in the fuselage and two in the wings. An additional 1,710 litres (452 US gal) of fuel can be carried in the three external fuel tanks. T-50 trainer variants have a paint scheme of white and red, and aerobatic variants white, black, and yellow.
The T-50 uses a single General Electric F404-102 turbofan engine license-produced by Samsung Techwin, upgraded with a FADEC system jointly developed by General Electric and KAI. The engine consists of three-staged fans, seven axial stage arrangement, and an afterburner. The aircraft has a maximum speed of Mach 1.5. Its engine produces a maximum of 78.7 kN (17,700 lbf) of thrust with afterburner. The more powerful F414 and EJ200 engines have been suggested as the new engine for the T-50 family.
The T-50's central processing unit and its operating system are developed by MDS Technology. The T-50's NEOS avionics operating system is the first and only real-time operating system to be developed by an Asian company, and holds both DO-178B and IEEE POSIX certification. Samsung Thales and LIG Nex1 are the main avionics and electronic warfare equipment developers for T-50 and its variants. Other South Korean companies and defense institutes such as DoDAAM Systems, Aeromaster, Intellics, and Korea Institute of Defense Analysis are responsible for the aircraft's secondary avionics and embedded systems, including store management computers, avionics testing equipment, flight data recorders, portable maintenance aids, data analysis software, post-flight data processing system, aircraft structure and engine management software, and mission planning and support systems. The TA-50 version is equipped with an ELTA EL/M-2032 fire control radar.
The T-50 is equipped with a Honeywell H-764G embedded global positioning/inertial navigation system and HG9550 radar altimeter. The aircraft is the first trainer to feature triple-redundant digital fly-by-wire controls. The cockpit panels, switches, and joysticks are produced by South Korea's FirsTec and Sungjin Techwin, head-up display by DoDaaM Systems, and multi-function display by Samsung Thales. Other South Korean subcontractors such as Elemech, Dawin Friction, and Withus cooperate in T-50 components production. Hanwha supplies the mechanical parts for the flight control system, and WIA supplies the undercarriage.
Armament and equipment
The TA-50 version has a three-barrel cannon version of the M61 Vulcan mounted internally behind the cockpit, which fires linkless 20 mm ammunition. Wingtip rails can accommodate the AIM-9 Sidewinder missile, and a variety of additional weapons can be mounted to underwing hardpoints. Compatible air-to-surface weapons include the AGM-65 Maverick missile, Hydra 70 and LOGIR rocket launchers, CBU-58 and Mk-20 cluster bombs, and Mk-82, −83, and −84 general purpose bombs.
The FA-50 can be externally fitted with Rafael's Sky Shield or LIG Nex1's ALQ-200K ECM pods, Sniper or LITENING targeting pods, and Condor 2 reconnaissance pods to further improve the fighter's electronic warfare, reconnaissance, and targeting capabilities. Other improved weapon systems include SPICE multifunctional guidance kits, Textron CBU-97/105 Sensor Fuzed Weapon with WCMD tail kits, JDAM, JDAM-ER for more comprehensive air-to-ground operations, and AIM-120 missiles for BVR air-to-air operations. FA-50 has provisions for, but does not yet integrate, Python and Derby missiles, also produced by Rafael, and other anti-ship missiles, stand-off weapons, and sensors to be domestically developed by Korea. The South Korean military is reviewing whether to arm the FA-50 with a smaller version of the KEPD 350 missile to give it a stand-off engagement capability of 400 km (250 mi).
In February 2018, European maker MBDA, in Singapore air show showcased an offer of its Meteor and ASRAAM medium and short-range air-to-air missiles available for integration for the KAI platforms FA-50 and future KF-X fighter jets.
Republic of Korea
In 2011, the first squadron with the TA-50, the T-50's light attack variant, become operational with the ROKAF. The ROKAF's Black Eagles aerobatic team operates the T-50B version. In 2014, the FA-50 was officially deployed by the ROKAF with President Park Geun-hye officially leading a ceremony during which a flight demonstration was held showing its capabilities. 20 FA-50s was assigned its own Air Force wing. 60 FA-50s were ordered by ROKAF. On 9 October 2014, an FA-50 successfully test fired an AGM-65 Maverick at a stationary target, a retired ship.
Indonesia had been considering the T-50, along with four other aircraft to replace its BAE Systems Hawk Mk 53 trainer and OV-10 Bronco attack aircraft. In August 2010, Indonesia announced that T-50, Yak-130 and L-159 were the remaining candidates for its requirement for 16 advanced jet trainers. In May 2011, Indonesia signed a contract to order 16 T-50 aircraft for US$400 million. The aircraft is to feature weapons pylons and gun modules, enabling light attack capabilities. The Golden Eagles are to replace the Hawk Mk 53 in Indonesian Air Force service. Indonesia's version has been designated T-50i. Deliveries began in September 2013. The last pair of T-50i aircraft were delivered in January 2014.
Iraq was negotiating the acquisition of T-50 trainer jets, having first publicly expressed official interest during the Korea-Iraq summit in Seoul on 24 February 2009. In April 2010, Iraq reopened the jet lead-in fighter-trainer competition for 24 aircraft, in which TA-50 competed. In December 2013, it was announced that Iraq signed a contract for 24 aircraft of the FA-50 variant designated T-50IQ, plus additional equipment and pilot training over the next 20 years. Deliveries were to begin in April 2016, with all aircraft to be delivered over the next 12 months.
The Philippine Air Force chose 12 KAI TA-50 aircraft to fulfill its requirement for a light attack and lead-in fighter trainer aircraft. The Department of National Defense (DND) announced the selection of the type in August 2012. Funding for 12 aircraft was approved by Congress on September 2012, but by late January 2013, state media reported that the FA-50, not the TA-50 as previously reported, was selected for the procurement.
In October 2013, President Aquino said the DND was close to finalizing the FA-50 deal, and on 19 October 2013, President Aquino and President Park Geun-hye of South Korea signed a memorandum of understanding (MoU) with provisions for acquisitions. On 13 February 2014, President Aquino approved the payment scheme for purchasing 12 lead-in fighter trainers with P18.9 billion ($415.7 million) budgeted. On 28 March 2014, the Philippines' Department of National Defense signed a contract for 12 FA-50 light attack aircraft worth P18.9 billion (US$421.12 million).
Deliveries began in November 2015 and are expected to be completed in May 2017. The first four FA-50PH aircraft delivered were displayed on 1 December 2016. All deliveries were completed by 31 May 2017.
Plans call for 3 or 4 of the 12 aircraft to be fitted with capability for beyond visual range (BVR) intercept. In March 2015, Stockholm International Peace Research Institute (SIPRI) reported that the Philippines plans to order additional FA-50s, which is supported by the PAF Flight Plan 2028 that lists another 12 FA-50s planned for the future.
On 26 January 2017, two Philippine Air Force FA-50PHs conducted a nighttime attack on terrorist hideouts in Butig, Lanao del Sur province in Mindanao, the first combat sorties flown by these aircraft.
On 12 July 2017, an FA-50 was involved in a friendly fire incident in Marawi when a bomb landed approximately 250 meters off target, killing two Philippine soldiers and injuring 11 more. Investigation resulted in clearing the aircrew and aircraft of fault and the type was allowed to return to active service in August.
In September 2015, the Thai government chose the KAI T-50 variant for its air force over the Chinese Hongdu L-15 to replace its aging L-39 Albatros trainers. The 4 T-50TH aircraft are scheduled to be delivered by March 2018. In July 2017, Thailand's government approved the procurement of 8 more aircraft with a contract signing expected later in the month.
Deliveries began in January 2018.
The United Arab Emirates (UAE) is seeking 35–40 fighter-trainers. In February 2009, the UAE selected the M-346 over the T-50. In January 2010, the UAE reopened the trainer contest. In 2011, it was confirmed that the T-50 was still competing for the UAE purchase.
Taiwan is looking to replace its current fleet of AT-3 jet trainers and F-5 LIFT planes with 66 advanced trainers, the Republic of China Air Force released a request for information (RFI) and two companies have responded including Lockheed Martin for the T-50 and Alenia Aermacchi's M-346 responded to the request. The planes are expected to be license produced in Taiwan with a local partner firm, and the overall estimated contract value is 69 billion New Taiwan dollars (US$2.2 billion). However, Taiwan decided to build 66 XT-5 Blue Magpie supersonic trainers based on Taiwan's old indigenous fighter for NT$68.6 billion instead of selecting the T-50 or M-346.
The FA-50 is also being offered to Croatia, which is deciding on a replacement for its aging fleet of MiG-21BIS aircraft. However, in October 2017, KAI did not bid as the FA-50 could not satisfy Croatian fighter requirements.
The Argentine Air Force is evaluating the FA-50 as a potential new platform. The Argentine government is seeking to buy the FA-50 through repatriation in Korea. MSN reported the Argentine defense minister said that when the financial aid is secured a contract for the FA-50 with KAI can be signed by December 2017.
The Royal Malaysian Air Force is looking for a light combat aircraft that also can serve as a lead-in fighter trainer LIFT, platform and should be ready for fielding in about 2021/22. The official noted that others are being considered but a preference for the T-50/FA-50 aircraft in service with near-neighbours the Philippines and the Republic of Korea.
Local media reported that the FA-50 could be a more affordable option than the Saab Gripen for the Botswana Defence Force Air Wing, citing Korean Aerospace Industries, signaling potential interest by the country.
Poland stated tender for new AJTs, in which T-50 was participating. M-346 was chosen.
Singapore evaluated the T-50 against the Italian Alenia Aermacchi M-346 and the BAE Systems Hawk for a $500 million trainer acquisition program contract for 12–16 aircraft. The Singapore Ministry of Defense eventually selected the M-346 aircraft ahead of T-50 and BAE Hawk in July 2010.
Israel had been evaluating the T-50 as a possible replacement for its McDonnell Douglas A-4N Skyhawk II trainers since 2003. On 16 February 2012, Israel announced its decision to procure 30 M-346s instead.
In October 2015, the U.S. refused to approve the sale of the KAI T-50 advance trainer to Uzbekistan. The T-50 uses a US-made engine, the F414, which requires a US export license to re-export to another country along the T-50. However, due to political considerations related to Uzbekistan, US refused to approve this. As the RTOS of the F/A-50 is indigenously developed, sales would have been possible with the relevant parts (RD93 engine, Kopyo or Zhuk-AE radars, Israel and Korean avionics, Korean inertial navigation systems for example) but this would have worsened Korean-US relations.
- T-50: Advanced trainer version.
- T-50A: Candidate for the US Air Force T-X program, based on the FA-50.
- T-50B: Aerobatic specialized T-50 version for Korea Air Force's aerobatic display team, the Black Eagles.
- TA-50: Lead-in fighter trainer and light attack version.
- FA-50: Light attack version, originally named A-50. A prototype from a converted T-50 first flew in 2011.
- F-50: A single seat multirole fighter variant that was considered but was canceled in favor of the KF-X.
- Indonesian Air Force – 16 T-50I aircraft ordered; all were delivered by January 2014. 15 in service as 2018.
- Republic of Korea Air Force – 50 T-50, 10 T-50B, 22 TA-50, and 60 FA-50 aircraft in service as of October 2016.
- Philippine Air Force – 12 FA-50PH aircraft ordered. All 12 aircraft were delivered by 31 May 2017. Intent to buy another 12 aircraft was reported in 2017.
- Royal Thai Air Force – 12 T-50TH aircraft ordered total; 4 T-50TH advanced trainers on order to be delivered by March 2018. 8 more T-50THs ordered in July 2017. First four aircraft delivered in April 2018.
Accidents and incidents
- On 15 November 2012, a T-50B of the South Korean Air Force Black Eagles aerobatic team crashed shortly after takeoff, killing the sole pilot on board. The cause of the crash was due to faulty maintenance.
- On 28 August 2013, a T-50 of the South Korean Air Force crashed during a training mission near Kwangju city, killing both pilots on board. Investigation results revealed that the pilot deaths resulted from failing to eject at a sufficient altitude, while the crash itself was caused by faulty maintenance.
- On 20 December 2015, an Indonesian Air Force T-50i Golden Eagle crashed while performing a flight demonstration during an airshow at Adisutjipto Air base in Yogyakarta, killing its two pilots possibly caused by pilot error.
- On February 6, 2018, a T-50B of the South Korean Air Force Black Eagles aerobatic team flipped over after one of its tyres burst on take off. It was taking off in preparation for a display at the Singapore Airshow. 
- Crew: 2
- Length: 13.14 m (43.1 ft)
- Wingspan: 9.45 m (31 ft; with wingtip missiles)
- Height: 4.94 m (16.2 ft)
- Wing area: 23.69 m² (255 ft²)
- Empty weight: 6,470 kg (14,285 lb)
- Max. takeoff weight: 12,300 kg (27,300 lb)
- Powerplant: 1 × General Electric F404 (built under license by Samsung Techwin) afterburning turbofan
- Dry thrust: 53.07 kN (11,925 lbf)
- Thrust with afterburner: 78.7 kN (17,700 lbf)
- Maximum speed: Mach 1.5 (1,640 km/h, 1,020 mph at 9,144 m or 30,000 ft)
- Range: 1,851 km (1,150 mi)
- Service ceiling: 14,630 m (48,000 ft)
- Rate of climb: 198 m/s (39,000 ft/min)
- Thrust/weight: 0.96
- Max g limit: -3 g / +8 g
- Guns: 1× 20 mm (0.787 in) General Dynamics A-50 3-barrel rotary cannon
- Hardpoints: Total of 7 with 4 underwing 2 wingtip and one under fuselage; holding up to 3,740 kg (8,250 lb) of payload
- Note: armament for TA-50 and FA-50 only.
Aircraft of comparable role, configuration and era
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