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"Gaoxin Project" - Y-8 Electronic Warfare Aircraft
Last updated: 2 May 2008
Y-8
Shaanxi Aircraft Industry (Group) Co. has been developing a range of special purposes aircraft based on its Y-8 turboprop transport platform since the late 1990s. The development programme, known as “Gaoxin Project” (Gaoxin = “High & New”
, consists of at least seven variants for airborne early warning and control (AEW&C), electronic warfare (EW), electronic intelligence (ELINT), and communication relay roles. The main contractor of the electronic systems onboard these aircraft is the China Electronic Technology Group Corporation (CETC).
Y-8 EW/ELINT ("Gaoxin 1")
"Gaoxin 1" Y-8 electronic intelligence aircraft
The “Gaoxin 1” project is an electronic warfare (EW) and electronic intelligence (ELINT) aircraft based on the Y-8C airframe. The aircraft features a large canoe-shape radome under the forward fuselage, possibly housing a phased array radar or ECM antenna. The aircraft retained the glass-in nose of the Y-8C, but had the rear loading ramp removed and replaced by an array of electronic equipment antennas. More antennas can be found under the fuselage between the main landing gears. At least two examples (“21011” and “21013”
have been identified in service with the Nanjing Military Region Air Force (MRAF).
Y-8 SIGINT ("Gaoxin 2")
"Gaoxin 2" Y-8 signals intelligence aircraft
The “Gaoxin 2” project is a signals intelligence (SIGINT) aircraft based on the Y-8C platform, equipped with an extensive array of sophisticated equipment to monitor enemy electronic activities. The aircraft features a large under-chin radome and a large semi-spherical radome on top of the fuselage before the vertical tailfin, both of which could be used to house electronic equipment antennas. The aircraft also has a number of smaller radomes and electronic antennas attached to its fuselage.
The PLA Naval Aviation Corps currently deploys a small number of the aircraft. The first example carrying serial number ‘9351’ was first spotted in operational service with the PLA Naval Aviation 1st Independent Regiment from its base in Laiyang Naval Air Station, Shangdong Province in Summer 2004. A second example was later identified serving with another naval aviation independent regiment at an unknown location. The aircraft has also been spotted flying near the Japanese coast since 2006.
Y-8 Communication Relay ("Gaoxin 3")
"Gaoxin 3" Y-8 communication relay aircraft
The “Gaoxin 3” project is a communication relay aircraft designed to facilitate air/ground communications in the battlefield. The aircraft serves as a communication node in an integrated C3I network to connect the ground forces commanders with combat aircraft during a joint services operation. The aircraft features a large semi-spherical radome located on the back of the fuselage, which possibly houses a satellite communication (SATCOM) antenna, as well as a number of electronic antennas attached to the fuselage.
YG-8 Electronic Warfare ("Gaoxin 4")
"Gaoxin 4" K/JYG-8 electronic warfare aircraft
The “Gaoxin 4” project is an electronic warfare aircraft designed for standoff electronic countermeasures (ECM) missions. The aircraft features two large cheek fairings, a smaller fairing on top of the vertical tailfin, and a cylinder-shape fairing under the fuselage. There are also a number of electronic antennas attached to the fuselage. An ECM suite onboard the aircraft could jam enemy radar and communications over a long distance, so that the aircraft does not have to enter the range enemy’s air defence.
The aircraft is known as YG-8 or K/JYG-8 in its military designation. So far only example has been identified in service with the PLAAF, carrying a registration number “21015”. The aircraft will replace the obsolete HD-5 EW/ECM aircraft based on the H-5 (IL-28) platform.
KJ-200 AEW&C ("Gaoxin 5")
"Gaoxin 5" KJ-200 airborne early warning aircraft
The “Gaoxin 5” project is an airborne early warning and control (AEW&C) aircraft equipped with a linear-shape active electronically steered array (AESA) radar similar to the Swedish Ericsson PS-890 Erieye. The development programme possibly began in the late 1990s, with a prototype based on the Y-8F200 airframe first flying in November 2001. A second prototype based on the newer Y-8F600 airframe first flew in January 2005, but was lost during an air crash on 4 June 2006.
In October 2004, a Y-8F200 turboprop transport aircraft was spotted undergoing modification to be fitted with a linear-shape ESA-type airborne early warning radar at Shaanxi. Later it was revealed that the AEW&C aircraft programme had been in development since the late 1990s, in parallel with the KJ-2000/A-50I AWACS development project at Xi’an Aircraft Corporation (XAC). With the larger, more sophisticated KJ-2000 performing long-range, comprehensive aerial patrolling and control roles, the smaller KJ-200/Y-8 AEW can provide a less expensive platform for tactical AEW and electronic intelligence roles.
The KJ-200 AEW system is based on the Y-8F600 platform, which is also known as “Category-III Platform”. (The Category-I and -II platforms refer to the non-pressurised basic variant Y-8 and pressurised Y-8C respectively) The aircraft is fitted with Western avionics for improved performance. The development of the airframe has been carried out jointly by Shaanxi Aircraft Industry (Group) Co. and the Antonov Design Bureau of Ukraine. Improvements on Y-8F600 include:
A two-man cockpit fitted with modernised avionics including U.S. Honeywell navigation system
Removal of the ‘glass-in’ nose to provide additional space for mission equipment
Four Pratt and Whitney Canada PW150B turboprop engines with British Dodi R-408 six-blade propellers
Increased take-off weight and range
Mission equipment pods on wingtips, vertical fin tip and nose
Chinese state-run Xinhua News Agency reported on Sunday 4 June 2006 that a military plane carrying 40 people was lost in the eastern province of Anhui and no survivor was found. The accident happened at about 16:00 Beijing Time (08:00 GMT) on Saturday near the village of Yaocun, in Guangde county. The plane's body hit bamboo forest and its tail fell in fields. Chinese president Hu Jintao has expressed deep condolences over the loss of lives and ordered a full investigation into the cause of the accident.
Although the report did not reveal the detailed model of the plane or the identities of the people onboard, it was later revealed that the plane was in fact the only example of the Y-8F600-based KJ-200 AEW&C aircraft. The aircraft was undergoing system testing when the accident happened. The 40 personnel onboard were from the PLAAF and Nanjing-based 14th Electronic Institute, which was responsible for the development of the ESA radar and avionics systems. The accident also caused a major setback in the KJ-200/”Gaoxin 5” project due to the lost of test data and key personnel involved in the project.
Anti-Submarine Warfare ("Gaoxin 6")
The “Gaoxin 6” project was said to be an anti-submarine warfare aircraft. No further detail is available on this design at the moment.
Y-8 EW/ECM ("Gaoxin 7 ")
"Gaoxin 7" Y-8 EW/ECM aircraft
A new member of the “Gaoxin Project” series aircraft, reportedly designated “Gaoxin 7”, was first spotted operational the PLAAF in April 2008. The aircraft features two large plate antenna arrays on each side of the rear fuselage, a pair of electronic antennas attached on the vertical tail fin, and two large radomes located in front of the landing gear compartments housing additional electronic equipments. The exact role of the aircraft is unknown.