OH-1 light observation helicopter

The OH-1 is Japan's first indigenously developed helicopter. It is designed for reconnaissance missions and was intended to replace Japan's OH-6D helicopters.

The OH-1 has stub-wings and a tandem seating arrangement. It is fitted with a "fenestron" type ducted tail rotor. It also features a composite hingeless rotor hub with damage-tolerant main rotor blades and an automatic flight control system. The tail rotor features eight asymmetrically spaced blades for reduced noise and...