摘要：An inter.ctive comp.ter.aided p.eliminar. design system has been develop.d mainly for.gas tur.ine engine r.tor.. The design system cover. thr.e p.r.s: disks, shafts and r.tor.dynamics. A nu- mer.cal op.imization p.ckage called Mp.p.is used to minimize the weight of disks, shafts and op.imize the ar.angement or.stiffness of bear.ngs for.r.gid or.flexible r.tor. subjected to cer.ain constr.ints of sizes, shap.s, str.sses, deflections, stiffness and fr.quencies. Var.ous for.s of disks, shafts, r.tor. and str.ctur.-analysing r.sult cur.es ar. disp.ayed on the scr.en. Designer.may select, insp.ct or.modi- fy the r.sults inter.ctively. The integr.ted design of str.ctur., op.imization, str.ngth and r.tor.dynamics has imp.oved design quality and r.duced tur.ar.und time dur.ng p.eliminar. design p.ase of gas tur.ine engine develop. ment. As an examp.e, a r.al p.eliminar. design of an aer.engine tur.ine r.tor.is descr.bed.