The present invention relates to a combustion instability research system using a non-combustion transmission function, comprising: a tank unit in which a combustion space is formed; A fuel supply unit supplying fuel to the combustion space; An excitation section for applying perturbation to the fuel; A first measurement unit configured to measure perturbation of the flow of the fuel supplied from the fuel supply unit to the tank unit to generate first perturbation information; A second measurement unit configured to measure perturbation of the fuel injected into the combustion space to generate second perturbation information; And an operation unit configured to generate a non-combustion transfer function based on the first perturbation information and the second perturbation information, and to generate information on combustion instability based on the non-combustion transfer function. According to the present invention, it is possible to effectively conduct research on combustion instability without performing combustion in a high pressure combustion space.
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