Integrated Starter-Generator for a More Electric Engine: a Brief Overview

A more electric engine is an aircraft engine concept that involves the integration of electric machines on the same shaft with a gas turbine engine. A separate direction is the study of the possibility of using electric machines as integrated starter-generators. In the case of integrating a starter-generator into an aircraft engine shaft, it is important to consider both high output performance requirements and harsh operating conditions, which together impose many design restrictions. This article provides an overview of research on the development of an aviation integrated electric starter-generator. The experience of development of world engine-building corporations and individual research groups, published in the scientific and technical literature, is considered. The key characteristics of the presented projects are analyzed.