Abstract: A dynamic model of two-spool turbo-jet engine with, post-stall capability is developed in this paper. In compressor model unun-stalled stalled and in-in-stalled stalled characteristics are included. Both combustors with rich fuel and lean fuel are considered. By use of conser vation equations of fluid energy, mass and momentum, the volume dynamics are described in detail. The utilization of this model with surge or stall is successfully induced by change of nozzle area, main combustor fuel-step and closing nozzle. The simulation results to induce surge coincide with the test results at home and abroad.

Key words: engine model, stall, dynamic Charaeteristics