Mitsubishi G7M Taizan

The Mitsubishi G7M Taizan, meaning Great Mountain, was a proposed twin-engine long-range bomber designed for the Imperial Japanese Navy in 1941. It was cancelled at the wooden mockup stage and never reached the hardware phase. The design called for a crew of seven, two Mitsubishi MK10A 18-cylinder air-cooled radial engines of 1,500 kilowatts each at take-off, a length of 20 metres and a wingspan of 25 metres. The projected performance was a top speed of 544 kilometres per hour at 5,000 metres and a combat range of 6,412 kilometres, with up to 800 kilograms of bombs and a heavy gun armament of 13 millimetre and 20 millimetre guns.