As powerplant of unmanned aerial vehicales(UAV) and cruise missile

microturbo engine has been developing quickly in recent years.In this paper

worldwide typical series microturbo engines with thrust below 4 000 N were summarized

covering the engine development background

structure

performance parameter and equipment/weapon object

etc.The newest developed TJ100 and AT-1 500 series of turbojets with thrust weight ratio over 10 were specially introduced.Based on above

common characteristics of this type of engine were discussed

and finally

seven key technologies during engine design

testing and manufacturing were proposed and analyzed by integrating real project engineering experience.