A Trajectory Acquisition Test System for Simultaneous Separation and Simulation of Double Stored Objects

Abstract

The invention provides a trajectory capture test system for simultaneous separation and simulation of double external objects, which belongs to the field of high-speed wind tunnel test technology and aircraft flight mechanics. The strut is fixedly connected to the half-arm angle-of-attack mechanism, the bomb-carrying base is connected to the wall of the wind tunnel test section through a vertical motion mechanism, and the parallel bottom plate is connected to the bomb-carrying base through a rotating shaft. Three-degree-of-freedom parallel mechanisms are respectively installed on the parallel bottom plate. The other end of the three-degree-of-freedom parallel mechanism is connected to the moving platform, and a rolling drive mechanism is provided inside the moving platform, and the moving platform is connected to the bomb-loading balance and the bomb-loading model through the bomb-loading support rod. The invention utilizes two bomb-loaded balances to measure the aerodynamic force and torque of the bomb-loaded models respectively, reversely solves the motion patterns of the two bomb-loaded models, controls the movement of each driving device, and realizes the multi-function of the two bomb-loaded models in the wind tunnel test section. The position and attitude changes of the degrees of freedom realize the simulation of the trajectory of the double-stored object model.

Description

technical field [0001] The invention relates to a trajectory capture test system for simultaneous separation and simulation of double external objects, which is used for the separation between stages of aerospace and aviation vehicles, and the trajectory capture wind tunnel test for the separation of machine bombs and external objects, and belongs to the high-speed wind tunnel test technology, aircraft flight field of mechanics. Background technique [0002] In the flight phases of separation between spacecraft and rocket stages, launch and release of aircraft external storage, drop of submunitions, and separation of sabot and armor-piercing projectiles from the carrier, the separation body and the parent body are in a complex and mutually interfering flow field, and the poor separation characteristics Not only will it affect the effect, but it will also lead to collisions between multiple bodies, and even endanger the safety of the parent aircraft. Therefore, it is very ne...

AI Technical Summary

Problems solved by technology

The existing CTS test technology in China can only realize the test simulation of one separation body, and the other separation body can only be fixed in position during the test. The deviation of the test results from the real situation is greater, and it is difficult to meet the test requirements.

[0004] The Russian T109 wind tunnel adopts a Cartesian coordinate structure, which can measure the separation characteristics of two external objects at the same time. However, because the separation body model is supported by a cantilever beam, the total length of the cantilever beam is about 4 to 5 times the length of the separation body model. Even longer, resulting in large elastic deformation during high-speed wind tunnel tests, and there are problems such as accumulation of errors among the structures that are difficult to eliminate. When the separation characteristics of two external objects are tested for this structure layout, there is a system blockage. Large size, poor rigidity, low test accuracy, etc., cannot meet the test requirements when doing hood deployment tests

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