PurposeTo achieve high efficiency of vibration isolation and to conserve the structural stability for the spaceborne satellite camera in the launch phase, design and validation of the whole-spacecraft vibration isolator with quasi-equal strength, high damping and shock protection is presented.MethodsMetal frame structure model of the isolator is established based on equal strength beam theory. The constitutive relation for linear viscoelastic damping material is expressed by five-parameter fractional derivative model. The optimization of constrained damping structure including the damping laye...