CRITICAL SPEED OF MULTI-ROTOR SYSTEM

US Customary Units

INPUT   DATA

Title  

Length of shaft, L in

    

Mass of shaft, ms lb
Modulus of elasticity, E   106lb/in2 
Area moment of inertia, I   in4
Mass of rotor #1, m1 lb
Position of rotor #1, a1 in
Mass of rotor #2, m2 lb
Position of rotor #2, a2 in
Mass of rotor #3, m3 lb
Position of rotor #3, a3 in
Mass of rotor #4, m4 lb
Position of rotor #4, a4 in
Mass of rotor #5, m5 lb
Position of rotor #5, a5 in

       Reset

RESULTS

Variables   Values   Units
 ♦  Critical speed of shaft, ωs   1771.9 rpm  
 ♦  Critical speed of rotor #1, ω1 4661.9 rpm
 ♦  Critical speed of rotor #2, ω2 4709.9 rpm
 ♦  Critical speed of rotor #3, ω3 0.0 rpm
 ♦  Critical speed of rotor #4, ω4 0.0 rpm
 ♦  Critical speed of rotor #5, ω5 0.0 rpm
 ♦♦  Critical speed of whole system, ωc 1562.5 rpm