Hydrodynamic force measuring system of underwater vehicle

Abstract

The invention discloses a hydrodynamic force measuring system of an underwater vehicle. The hydrodynamic force measuring system comprises an anti-cavitation tail support key (2), an underwater vehicle front body (3), a tail force measuring six-component balance (4), a front body force measuring six-component balance (5), a soft brush (6), a sealing part (7), an inside-underwater-vehicle balance support (8), a front body balance support rod (9) and a tail balance support rod (10). The tail force measuring six-component balance (4) is in the shape of the tail of the underwater vehicle, thereby being capable of serving as the tail of the underwater vehicle and measuring hydrodynamic force on the tail of the underwater vehicle, stress on the underwater vehicle front body is transmitted to the front body force measuring six-component balance through the support in the balance, hydrodynamic force of the underwater vehicle front body is directly measured through the front body six-component balance, and the joint of the tail of the underwater vehicle and the front body is sealed by the sealing part and the soft brush. The hydrodynamic force measuring system can accurately measure the hydrodynamic force of the underwater vehicle front body and the tail in a separated type, and influence on measuring caused by hydrodynamic fluctuation of the tail is reduced.

Description

technical field [0001] The invention relates to a hydrodynamic measurement system for an underwater vehicle. Background technique [0002] Cavitation technology is an important key technology in the hydrodynamic field of underwater vehicles. For horizontally launched underwater vehicles, the use of cavitation technology can break through the speed limit of existing underwater vehicles, so that most of the surface of the underwater vehicle is surrounded by low-density water vapor or gas, and the resistance of the vehicle is greatly improved. Reduce; for the vertically launched underwater vehicle, the use of cavitation technology can reduce the hydrodynamic load to ensure the stability of the vehicle's underwater movement. [0003] Due to the package of cavitation, only a small part of the front body and the tail of the vehicle keep in contact with the water when the vehicle navigates underwater, so that the force of the vehicle is mainly borne by the front body and the tail....

AI Technical Summary

Problems solved by technology

At present, the conventional hydrodynamic measurement system measures the hydrodynamic force of the entire vehicle body, and it is generally difficult to measure the hydrodynamic force on the front body and the tail of the vehicle body separately.

If we learn from the similar separate measurement technology in the air wind tunnel, the leakage and vortex flow of the water flow in the gap between the precursor and the tail will bring about large changes in hydrodynamic parameters, and it is difficult to obtain accurate measurements of the precursor and the tail. Split hydrodynamic parameters

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