Characteristics, in particular synchronous reactance, of the aircraft AC generator have important effects not only on the dynamic stability of the aircraft AC generating system, but on the weight of the generator.
This paper gives the relation of the synchronous reactance to the weight of the generator First, the electrical magnetic weight (EMW), i.e. sum weight of the electrical winding and the magnetic iron core is discussed as a function of the synchronous reactance. Second, theoretical formula is obtained for the synchronous reactance to minimize the EMW. Last, the total weight (TW) of the generator is examined upon the data of several present-use generators and the empirical formula expressing the TW is obtained as a function of cooling constant, speed, output capacity and the synchronous reactance.
The purpose of this paper is to assist system engineers or users of the aircraft AC generating system in finding the best generator for their particular application.