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This paper analyzes the rotating rectifier type aircraft generator system so that a digital computer study of system transient response may be made. A detailed analysis of the generator is made using Park's equations. This analysis results in a mathematical model which is quite easily handled by a digital computer. A single time constant transfer function is used for the exciter-rectifier which has proved sufficiently accurate. The generator analysis could be extended to the exciter and rectifier equations derived in Reference 3 used to obtain better accuracy if sufficient exciter-rectifier data is available. The regulator transfer function is a ratio of polynomials with limits and constants furnished by the designer. The purpose of this paper is to present the detailed generator analysis and briefly discuss the methods of representing other system elements and the computer program used for problem solution.