FIELD: experimental hydrodynamics, measurement of axial force and torque of propeller of ship under complex conditions. SUBSTANCE: gear incorporates resistance strain gauges of axial force and torque installed on propeller shaft along axes of corresponding major stresses and arranged in measurement bridges, signal amplifiers, current collector with sliding brushes and source of power supply and registers mounted permanently. Gear is inserted with two additional strain gauge bridges and signal amplifiers of additional bridges which form four-channel measurement system together with main measurement bridges, level bias circuits in accordance with number of channels, two multiplexers and clock generator put on propeller shaft, two demultiplexers, clock pulse former, retrieval and storage units, level bias circuits and low-pass filters according to number of measurement channels mounted stationary. EFFECT: gear solves problem of increase of authenticity of measurements under complex conditions of ship. 8 dwg
