3 pages matching polar symmetry in this book
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absorber mass ALTERNATE CONFIGURATION amplitude analysis analytically angular velocity axes barrel center of gravity centrifugal pendulum absorber coefficients conventional dynamic absorber Coriolis Absorber CORIOLIS VIBRATION ABSORBER Cramer's Rule DAMPED GVA damped resonant Damping ratio Distance from pivot EFFECT OF STRUCTURAL elastic restraint electronic counter Equation 23 equations of motion excitation frequency Figure 13 Figure 22 Frahm absorber FREQUENCY RATIO function of gyro gimbal GVA CONFIGURATION GVA Test Model gyro disc gyro rotor gyro speed gyroscopic absorbers gyroscopic disc Gyroscopic Vibration Absorber helicopter inertia Kaman Aircraft Lagrange's Equation linearized equations Mass of GVA mass ratio motor natural frequency nonlinear nonrotating nutational nuut obtained Parallel GVA Mounting polar symmetry quency random vibration rate gyro resonant frequency resonant response RESPONSE RATIO VARIATION rigid body rotor speed shaker armature shown in Figure solution spring restraint stability structural flexibility synchronous absorber tare torque undamped VARIATION WITH FREQUENCY VIBRATION ABSORBER FIGURE vibratory yields