Six-degrees-of-freedom system of big load model track capturing test of large transonic speed wind tunnel

Abstract

The invention provides a six-degrees-of-freedom system of big load model track capturing test of a large transonic speed wind tunnel, which comprises a cross movement mechanism, a normal movement mechanism, an axial movement mechanism and a three-degrees-of-freedom gesture movement mechanism. The system solves the problems of small route, low bearing ability and poor rigidity of the six-degrees-of-freedom system in the track capturing test. The cross movement mechanism is installed on leeside of upper and lower wall panels of the testing section, the normal movement mechanism is installed on the cross movement mechanism; the axial movement mechanism is installed on the normal movement mechanism, and three-degrees-of-freedom gesture movement mechanism is installed on the axial movement mechanism; the three-degrees-of-freedom gesture movement mechanism can achieve pitching, yawing and rolling movements at the tail end of the mechanism through the rolling, pitching and rotating movements.The first grade rotating mechanism is connected with the axial movement mechanism, and orderly equipped with the pitching mechanism and the second grade rotating mechanism in series. The six-degrees-of-freedom system has big movement route, high bearing ability and rigidity, high movement precision and small blockage.

Description

technical field [0001] The invention belongs to the field of aeronautical aerodynamic wind tunnels, and in particular relates to a six-degree-of-freedom system for large-scale transonic wind tunnels and large-load model capture trajectory tests. Background technique [0002] The capture trajectory test is a special wind tunnel test to study the safety characteristics of the separation of the external store and the carrier aircraft. Specifically, it is a test device for simulating the separation state of the external store and the carrier aircraft in the high-speed wind tunnel test. Among them, the six-degree-of-freedom mechanism is the support device and motion execution device for the external objects in the capture trajectory test system, and is the core part of the whole system. The six-degree-of-freedom mechanism is controlled by a computer, and provides six degrees of freedom (axial X, lateral Y, normal Z, pitch α, yaw β, roll γ) motion for the store model. The movemen...

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Problems solved by technology

[0003] Based on the above deficiencies, the purpose of the present invention is to provide a six-degree-of-freedom system for large-scale transonic wind tunnel large-load model capture trajectory test, which solves the problems of the existing six-degree-of-freedom mechanism with small travel, poor bearing capacity and poor stiffness

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