--The F-4EJ Kai is an Air Self-Defense Force fighter developed from the F-4EJ Phantom II.
――It was decided to adopt the F-86F as a successor to the F-86F in 1968, and more than 20 years have passed since the introduction of the F-4EJ, which began deployment in 1969, so in order to extend the life of the aircraft and improve its capabilities, Showa We have been conducting research and development since 1955.
--As a result, in February 1982, we announced a repair plan for the F-4EJ.
――This repair is mainly to improve the fighting ability and adopt the ASIP inspection method as a measure to extend the life of the aircraft.
--For improving combat capability, we first installed the AN / APG-66J, which is a modification of the Westinghouse AN / APG-66, which uses a fire control radar for the F-16, for the F-4EJ.
――This radar was adopted from the point of reflection of the Hakodate forced landing of the MIG 25, and is suitable for searching for aircraft flying at low altitude over the sea with a small pulse-Doppler radar from the sky.
――Along with this, we changed the on-board computer from the analog computer to the digital computer.
――This made it possible to integrate the armament system and operate domestic ASM-1 anti-ship missiles.
--The navigation system has also been changed from analog to digital.
――The digitization of the inertial navigation system has dramatically improved navigation accuracy, and it also has a target mark function that allows you to mark up to three target points.
--In addition, as a defense measure for your own aircraft, the radar-warning system has been modified to improve its capabilities, and detailed data will be displayed on the CRT screen of the cockpit.
――In addition, as a measure to simplify the operation procedure of the pilot, the HOTAS concept that allows various operations while keeping your hands on the control stick and throttle lever is also adopted.
――Along with these modifications, a new head-up display has been adopted for the information processed data so that the pilot can read the data while facing the front.
――F-4EJ Kai adopted the ASIP aircraft management method as a life extension measure for the aircraft.
――This is a system that can manage the flight record data of each aircraft by computer and manage the degree of fatigue of each aircraft individually.
――This ASIP method makes it possible to extend the life of each aircraft by about 2,000 hours.
――F-4EJ Kai, whose main mission is interceptor combat, but the ground attack is also significantly improved compared to F-4EJ, so the support fighter F-1 will be retired in the future, so F-4EJ Kai One squadron will be on a supportive combat mission.
