FIELD: transport.
SUBSTANCE: claimed process involves a rectilinear ship dummy motion with the two-stage propulsor dummy in the basin stable water. Note here that said ship dummy is coupled with tug trolley via dynamometer to measure hydrodynamic loads at ship dummy. Front stage thrust and moment at full speed is controlled by single-shaft screw dynamometer fitted on the front stage shaft. Additionally, at low speed, a single-shaft screw dynamometer is used to measure hydrodynamic loads. Note here that the propulsor first stage is simulated by the fixed screw propeller. Screw dynamometer shaft passes through the hub of the latter to the last stage dummy. Note also that mounting pitch of rear stage dummy is fixed at position corresponding to the low speed mode.
EFFECT: higher accuracy of calculations and hydrodynamic efficiency of developed propulsor.
2 cl, 1 dwg
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