CPC B64C29/0025
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- CPC B64C29/00 - Aircraft capable of landing or taking-off vertically (attitude, flight direction, or altitude control by jet reaction B64C15/00; rotorcraft B64C27/00; air-cushion vehicles B60V)
- CPC B64C29/0008 - having its flight directional axis horizontal when grounded
- CPC B64C29/0016 - the lift during taking-off being created by free or ducted propellers or by blowers
- CPC B64C29/0025 - the propellers being fixed relative to the fuselage
| Enclosing categories | CPC B64C29/0008, CPC B64C29/0016 |
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| Keywords | Helicopter |
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