FIELD: propulsion engineering. SUBSTANCE: propeller depends for its operation on rotation of unbalanced masses at angular velocity varying within one revolution and has two groups of unbalanced masses, four ones per group. Each unbalanced mass is mounted on driven shaft and coupled with separate drive shaft. Each driven-shaft rotating mechanism whose angular velocity varies within one revolution, has crank mounted on driven shaft and translational kinematic pair formed by crank and unbalanced mass slot. Driven shafts with unbalanced masses and drive shafts are installed in separate cases joined together for controlled relative displacement in plane perpendicular to axis of shafts. Unbalanced masses of each group are spaced in pairs 180 deg. apart and unbalanced masses of one group are spaced 90 deg. from those of other group. Adjacent driven shafts rotate in relatively opposite directions. Drive shafts are coupled together via pairs of similar gear wheels. Centers of unbalanced mass revolution on one group and those of drive shaft are located at tops of squares. EFFECT: provision for creating adjustable unidirectional tractive force. 7 dwg
