涡轮泵转子的临界转速研究_计入液体作用力时涡轮泵转子的临界转速.pdf

1999 4 A pr. 1999 20 2 JOU RNAL OF PROPULSION TECHNOLOGY Vol. 20No. 2 ( ) 何洪庆　张小龙　沈达宽　张哲文 ( , , 100 2) : , , , , + : , , , , : V434. 21 STUDY ON CRITICAL ROTATIONAL SPEED OF TURBOPUMP ROTORS ( ) FOR TURBOPUMP ROTORS TAKING ACCOUNT OF LIQUID ACTING FORCES He HongqingZhang Xiaolong Shen Dakuan Zhang Zhew en ( Coll. of Astronautics, Northw estern Polytechnical Univ . , Xian, 100 2) : . Abstract T he transfer matrix of t he plat e by the act ion of liquid was derived The critical ro- , tational speed of the turbopump rotor possessing t hree plat es t wo supports and single shaft was calculated. The frequency spectrum and t he critical rotat ional speed were compared in regard t o and w it hout regard to the liquid action. The result s show that there is essential dist inction between the frequency spectrum s in t wo conditions. T he liquid act ion on pump w heel obviously influences the critical rotation speed of the rotor . Subj ect terms: Liguid propellant rocket engine, T urbine rot or, Rot or speed, T ransfer matrix + method , Numerical simulation 1 , [ 1, 2] , , P LP DM f D M 2 P L = A ( 1) : 1998-02-04, : 1998-06-08 20 2 ( )