Variable volume elastic optical test device

Abstract

The invention discloses a variable capacity projectile optical test device. The device comprises a connecting mechanism, an optical variable capacity projectile and a combustion cylinder, wherein the optical variable capacity projectile is provided with a variable capacity piston, and the combustion cylinder is provided with a cylinder piston; the variable capacity piston and the cylinder piston are connected through the connecting mechanism, and the connecting mechanism is provided with a unidirectional motion limiting mechanism; the unidirectional motion limiting mechanism is used for restricting the variable capacity piston and the cylinder piston from conducting reverse motions during the process of varying the capacitance by the variable capacity projectile optical test device. According to the variable capacity projectile optical test device, the variable capacity experiment can be achieved, and the actual operation of an engine can be simulated well in comparison with the prior art, so that the airflow motion, the temperature and pressure distribution and the mixed gas distribution in a combustion chamber of the engine under the reciprocating motions of the piston are reliably approximated.

Description

technical field [0001] The invention relates to the technical field of engine visualization, in particular to a variable volume elastic optical test device. Background technique [0002] With the increasing maturity of optical testing technology and high-speed imaging technology, constant volume incendiary bomb devices are widely used in the visualization research of engines. The visualization technology based on the constant volume projectile optical platform makes the research on the engine cylinder more intuitive and in-depth, and further ensures the reliability of the test results in the space and time dimensions. However, compared with the actual operation of the engine, in the prior art, the constant volume incendiary bomb has a fixed volume throughout the process, so its internal environment cannot be completely reliable close to the airflow movement and temperature in the combustion chamber of the engine under the reciprocating motion of the piston. Pressure distrib...

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Problems solved by technology

[0003] In order to overcome the above defects, the technical problem to be solved in the present invention is to provide a variable volume bomb optical test device to solve the defects of existing constant volume incendiary bombs.

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