To provide a moving blade having a high driving force and having high blade shape retainability, to allow steering feedback control, and to provide steering function redundancy.
The moving blade 10 includes: flexible outer plates 21, 22, 31, 32, 41, 42 to form a blade surface; a plurality of girder structures 13, 23, 33, 43 connected in series in a direction from the base end to the tip end, at a variable relative angle to each other; oil chambers 61, 62, 63, 64, 65, 66 provided on a blade surface side with respect to a joint between two adjacent girder structures, surrounded by the two girder structures and outer plates, and varying in capacity in response to a change in relative angle between the two girder structures; and hydraulic drive systems 81, 82, 83 for varying the relative angle by varying a hydraulic pressure in the oil chamber. Each joint is provided with a steering angle sensor 52a, 52b, 52c.
HITOMI ATSUSHI
HIRAKI MEGUMI
Yoshio Arafune