Underwater Model Maneuverable Unsteady Force Measuring Mechanism

Abstract

The invention discloses an underwater model maneuverability unsteady force measurement mechanism, comprising a support rod connection plate, the bottom of which is provided with a connection support rod; the bottom of the connection support rod is provided with a force measurement sensor; the force measurement sensor is installed on the test model; the outer circumference of the connection support rod is fastened with the support rod connection plate through a second bolt; a bearing support seat is arranged above the support rod connection plate; the middle part of the bearing support seat is provided with a center shaft through an angular contact ball bearing; the bottom of the center shaft is fixed on the support rod connection plate through first fixed bolts; the top of the center shaft is provided with a worm gear; a worm meshed with the worm gear is fixed on a worm support seat through a fastening member; the worm support seat is installed on the bearing support seat; the worm is driven by a motor; besides, the underwater model maneuverability unsteady force measurement mechanism comprises a trailer platform which is spaced from the bearing support seat and is in parallel with the bearing support seat; and the outer circumference of the trailer platform is connected to the bearing support seat through a first bolt and is fastened on the bottom of the bearing support seat through nuts. The invention can realize the measurement of the maneuverability hydrodynamic force in the horizontal plane or the vertical plane of the underwater navigation object.

Description

technical field [0001] The invention relates to the technical field of underwater vehicle constraint model tests, in particular to an underwater model maneuverability unsteady force measurement mechanism. Background technique [0002] At present, the hydrodynamic determination model test of the constrained model of the underwater vehicle is a relatively reliable method for determining the hydrodynamic coefficient in the mathematical model in order to establish an accurate mathematical model. Maneuverability hydrodynamic determination model test is usually also referred to as maneuverability restraint model test, that is, mechanical constraints are used to force the underwater model to perform prescribed movements. During the model test, the motion parameters of the underwater model are changed systematically, and the hydrodynamic forces acting on the underwater model are measured to obtain the hydrodynamic coefficients. The towing tank is a test facility for hydrodynamic te...

AI Technical Summary

Problems solved by technology

[0006] The models of the current maneuverability constraint model tests of underwater vehicles are relatively heavy, which requires that the connecting struts and load cells should not be too small and the rigidity must be strong enough. However, the space under the trailer is limited and the measurement mechanism is not easy. It is too large, and the technical difficulty angle is large. So far, no such underwater model maneuverability unsteady force measurement mechanism product has been found.

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