| 摘要 |
This invention relats to a combination gyroplane having a lockable rotor and rotor blades adapted to be retracted in the locked condition, comprising an equal number of rotor blades positioned in at least two planes offset with respect to each other with reference to the rotor axis, and means for maintaining the blade groups in operative position in a staggered arrangement and for causing the rotor blades of the groups to overlap for the retracting operation.
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