Method and device for measuring propeller thrust

Abstract

The invention relates to underwater vehicle technology and aims to provide a propeller thrust measurement method and device. The device comprises a brushless motor and a transmission shaft connected through a coupling; the other end of the transmission shaft is in interference fit with a propeller; a measurement module provided with a tension and pressure sensor is arranged between a motor base and a first lifting ring for lifting the whole measurement device; the motor base and the first lifting ring are respectively fixed at two opposite sides of the tension and pressure sensor; and the first lifting ring, the measurement module, the motor base, the brushless motor, the coupling, the transmission shaft and the propeller are arranged in turn, and transmission shafts of the brushless motor, the coupling, the transmission shaft, and the propeller are on the same line. The device has the advantages of small size, light weight, and simple operation. The price is low, the use and the use value are clear, and the promotion is easy. The device is easy to process and produce, simple in process, and easy to put on the market quickly. Also, the device is easy to disassemble, can quickly change different types of propellers and motors, and can conveniently test the open water performance of different propellers.

Description

technical field [0001] The invention relates to underwater vehicle technology, in particular to a small propeller underwater thrust measuring device. The small propeller thrust measuring device can simultaneously measure the thrust generated when the propeller rotates in forward and reverse directions. Background technique [0002] The purpose of the propeller thrust performance test is: 1. To analyze the various efficiency components of the propulsion of the underwater vehicle based on the results of the self-propulsion test and open water test, and to estimate the actual propulsion performance; 2. To analyze and compare the advantages and disadvantages of various propeller design schemes. 3. Draw the test results into a map for design use; 4. According to the test results, verify the propeller theory and analyze the influence of geometric parameters on propeller performance. Therefore, the propeller thrust test is of great significance for the modeling of ship propulsion ...

AI Technical Summary

Problems solved by technology

However, due to the presence of propellers in the measurement process, the modeling and simulation process for the entire measurement work is more complicated and the reliability of the final measurement results is low

In addition, the current measuring equipment is tested under air conditions. At the same time, most of the measuring equipment is complex in structure and expensive, and it is not suitable for water immersion testing.

However, if the water-leaving test is carried out, there will be a problem of large measurement errors, and it is even more impossible to obtain the thrust value of the propeller under different water immersion depths.

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