FIELD: marine propulsion plants with oppositely rotating propellers.
SUBSTANCE: proposed device includes rear propeller (22) and front propeller (6) which are located opposite each other; it is provided with at least two flow control plates (28) located at similar distance and mounted on cover (30) of hub of front propeller (6); they extend beyond cover (30) in radial direction.
EFFECT: reduction of probable cavitation on rear propeller blades.
12 cl, 3 dwg
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