高度8700mで405kt(750km/h)の最大速度を出すという、B-29迎撃用の高速局地戦闘機「震電」。機首部に小さな前翼があり、操縦席後方に推進式の「ハ四三」四二(MK9D改)発動機を装備、尾端に6翅プロペラを有する。日本で唯一の前翼式の戦闘機であり、いかにして外形寸法を小さくし、胴体内部空間の利用効率をよくして高性能を出すことができるかを究明した海軍航空技術廠飛行機部の鶴野正敬技術少佐の着想を実現したものであった。
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TYPE 18 EXPERIMENTAL INTERCEPTOR "SHINDEN"(J7W1)
had a maximum speed of 405kt at 8,700. The
aircraft was designed to intercept B-29s
in its home-defense role. With small wings
on nose she was powered by Ha-43 type 42
(MK9D KAI) engine mounted on rear fuselage
with 6-blade propellers. The concept of this
unique fighter was a brainchild of LCDR M.
Tsuruno from Aircraft Div. Naval Air Arsenal,
In pursit of less-drag fuselage design LCDR
Tsuruno had been making every endeavor to
produce higher utilization of fuselage space,
which eventually led to the concept of Shinden.
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