The present invention relates to a device for optional activation of a vertical-axis propeller to be configured on the lower surface of a marine vessel, said device comprises a vertical-axis propeller; a sliding means associated with the lower surface of the marine vessel and sliding the vertical-axis propeller; at least one slider that is associated with the vertical-axis propeller and is in sliding relation with the sliding means; and at least one driving means for driving the vertical-axis propeller in upwards and downwards in the sliding direction.
RETRACTABLE VERTICAL-AXIS PROPELLER DEVICE
2019-02-28
Patent
Electronic Resource
English
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
RETRACTABLE PROPELLER DEVICE FOR AIRCRAFT, SPACECRAFT OR WATERCRAFT
European Patent Office | 2018
|On efficiency of vertical-axis propeller
Engineering Index Backfile | 1960
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