Improvements of the Aerodynamic and Thermal Characteristics of an S-Shaped Windowed HDD Arms

• Main Authors: Ibrahim, M.D, Junaidi, E., Osman, M.S, Khan, A.A
• Format: Proceeding
• Language: English
• Published: P Joint International Conference on Micromechatronics for Information and Precision Equipment 2012
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://ir.unimas.my/id/eprint/2752/1/M.%20D.%20IBRAHIM.pdf; http://ir.unimas.my/id/eprint/2752/

Recently, hard disk drives (HDDs) having averages of 7,200 rotational per minute (rpm) are the norm. However, high-end HDDs which require higher revolutionary speed and higher track density need smart countermeasures for flow-induced vibration (FIV) such as arm vibrations; and HDDs excessive heat rise, without increasing its power consumptions. The authors propose a new actuator arm with a better window, whereby each arms in the arm actuator has a large hole with the same outer size as the original actuator arm. Another improvement that the authors propose is by creating the outer design to be a novel S-shaped design to promote better air flow in between. In this paper, the behavior of these air flows inside an HDD with the consideration of a bigger window and an S-shaped design arm actuator was studied.