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Old 12-14-2020, 10:33 PM
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Isaac Isaac is offline
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Cool Technical opinion on the plane

As stated earlier, this is a concept jet converted by the Japanese late in 1945 to a jet plane. The propeller version did fly and was rejected as there was no need for a reconnaissance aircraft. So it was decided to convert the design to a jet bomber. The version being built here is merely an addition of a jet engine under each wing with added fuel tanks in the fuselage where the original internal combustion engines resided ( yes it was twin engined prop plane ).

In my technical opinion, this plane would have been a "dog". Big rotund fuselage with two small jet engines and nothing else is like converting a horse drawn carriage into a food delivery truck. It just can't be done.

There was another proposal of installing the two engines at the wing roots. While that would have been a better concept in drag reduction, the inlet technology and long air ducts for the axial flow engines was lacking in Japan at that time.
Kugisho R2Y2 Keiun experimental concept jet-img_3037.jpg

Kugisho R2Y2 Keiun experimental concept jet-img_3039.jpg



This project was just doomed to failure and there were better technical solutions for a jet bomber even then. But it makes for a good topic of experimental planes and most likely would have flown if it had another year for development.

All speculation, but fun discussion.


Isaac
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