Hard disk drive (HDD) are the most useful external storage devices for computer systems and consumer electronic equipment. Digital information is recorded in concentric tracks on rotating disks using miniaturized read/write (R/W) elements in an HDD. R/W elements are mounted on self-lubricated sub micrometer flying sliders. These sliders are connected to stainless steel (SST) suspensions that are connected to guide actuator arms and a voice coil motor (VCM) which allows cross-track seeking and track following of R/W elements. A head gimbal assembly (HGA) consists of the slider and the SST suspension. The recording density of HDDs increases several tenths of a percent every year. However, the airflow-induced vibration of an HGA windage is an