LOW-RPM PROPELLER SCREW

摘要

FIELD: transport. ^ SUBSTANCE: low-RPM propeller screw (PS) has a sleeve-like hub accommodating blade shanks pivoted to vary PS pitch by turning the blades about the axis misaligned with respect to PS rotational axis and shifted relative to the latter. Aforesaid hub is furnished with moving circular insert. Blade shanks incorporate rods misaligned relative to PS axis. Mating elongated seats are made in the hub insert to receive aforesaid rods. Geometrical axis of blade shanks is aligned with that of blade turning. ^ EFFECT: increased thrust in wide rage of ship speed (n<80 rpm). ^ 2 cl, 3 dwg