Abstract: A dynamic model of dual-spool turbo-jet engine with post-stall capability is used in this paper. By utilizing this model, the surge is successfully induced by opening nozzle, main combustor fuel-step and throttling nozzle. The simulation results are coincident with test results obtained at home and abroad. The above dynamic model is adopted to simulate surge operation induced by opening nozzle and the mechanism of surge control of fuel pulse cut-off (FPCO) for duel-spool turbo-jet engine is investigated by computer simulations. The effect of parameters of FPCO on surge control is analysed. Some guide lines of surge control design for dual-spool turbo-jet engines are brought forward.

Key words: turbo一et engine, surge control, fuel pulse cut-off