--Nakajima C6N1 Ayakumo is a high-speed reconnaissance aircraft of the Japanese Navy.
――The Navy made a practical machine trial production plan in 1945 and showed it to each manufacturer.
--There was a carrier-based high-speed reconnaissance aircraft while the Nakajima Squadron also had some unofficial announcements.
――This plan, called N-50, had very strict performance requirements.
――The maximum speed is 350kt (650km / h) and the maximum cruising range is 2,500 nautical miles (4,630km). Given the distance between Osaka and Bangkok, it was thought that the required engine would require a 2,000 horsepower class.
――For this reason, Nakajima came up with a twin-engine model in which two 1,000-horsepower class engines are skewered inside the fuselage and the propellers on both wings are driven via shafts and gears.
――However, just around this time, the prototype of a large horsepower, diameter-saving engine called [Homare] was proceeding smoothly, so the Navy instructed us to use [Homare] in the N-50 project.
-[Homare] was a high-performance engine with a diameter of 1,180 mm and a lift output of 1,830 horsepower, which was undergoing practical tests by galaxies at that time.
--Nakajima reported to the Navy in June 1945 that he decided to proceed with a single-engine aircraft equipped with a [Homare] engine, instead of a twin-engine aircraft with a complicated mechanism.
――The 1,830 horsepower [Homare] engine is only 1,600 horsepower at an altitude of 6,000 m, so it was found that 400 horsepower was not enough for the originally planned value of 2,000 horsepower, and the aircraft shape should be devised to compensate for this. became.
――This was first to reduce the front fuselage area and then to reduce the main wing area.
――Reducing the main wing area causes an increase in landing speed and makes it difficult to land on an aircraft carrier, so we adopted slats and fowler flaps to obtain high lift.
――The propeller has a large diameter of 3.5m because it has to be loaded with a large amount of fuel and started from a narrow aircraft carrier.
――The first unit, which was produced with a new axis and the latest design, was completed in April 1941 and was examined by the Navy.
--This aircraft, which began mass production in April 1945, was decided to be officially adopted as the Saiun 11 type (C6N1) in September 1945.
――The mass-produced Ayakumo had a maximum speed of 609km / h, and although its performance dropped from 635km / h at the time of trial production, it was able to shake off the Grumman F6F.
――In addition, among the mass-produced aircraft produced, the speed and cruising range were bought and it was remodeled as a night fighter and equipped with either two 20 mm diagonal guns or one 30 mm diagonal gun, and it is also active in mainland air defense. I am.
[data]
--Crew: 3 people
--Overall width: 12.50m
--Overall length: 11.15m
--Overall height: 3.96m
--Engine: Homare Nakajima 21 type (air-cooled double star type 18 cylinder)
--Separation output: 1,990 horsepower
--Maximum speed: 609km / h (altitude 6,100m)
--Armed: 7.9mm swivel machine gun x 1 (upper rear)
[Decal]
--The 762th Naval Air Corps Reconnaissance 11th Squadron Affiliated Aircraft
--The 343rd Naval Air Corps Reconnaissance 4th Squadron (Kiheitai) affiliated aircraft
( This is a machine translation. Please allow for possible misinterpretations in the text. )