''The autogyro has now evolved into the helicopter.<br>his is an early helicopter, whose prototype had already flown, and had begun to be used for patrol and communication purposes.<br>This is a what-if version that might have been introduced to the Maritime Self-Defense Force after the war. | ''The autogyro has now evolved into the helicopter.<br>his is an early helicopter, whose prototype had already flown, and had begun to be used for patrol and communication purposes.<br>This is a what-if version that might have been introduced to the Maritime Self-Defense Force after the war. |