Analog VLSI system for active drag reduction

Author

Gupta, Bhusan ; Goodman, Rodney ; Jiang, Fukang ; Tai, Yu-Chong ; Tung, Steve ; Ho, Chih-Ming

Author_Institution

Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA

fYear

1996

fDate

12-14 Feb 1996

Firstpage

45

Lastpage

51

Abstract

We describe an analog CMOS VLSI system that can process real-time signals from surface-mounted shear stress sensors to detect regions of high shear stress along a surface in an airflow. The outputs of the CMOS circuit are used to actuate micromachined flaps with the goal of reducing this high shear stress on the surface and thereby lowering the total drag. We have designed, fabricated, and tested parts of this system in a wind tunnel in laminar and turbulent flow regimes

Keywords

CMOS analogue integrated circuits; analogue processing circuits; drag reduction; flow measurement; laminar flow; microsensors; turbulence; wind tunnels; active drag reduction; analog CMOS VLSI system; laminar flow regimes; micromachined flaps; real-time signals; surface-mounted shear stress sensors; turbulent flow regime; CMOS process; CMOS technology; Costs; Fuels; Microscopy; Sea surface; Skin; Stress; Surface-mount technology; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Microelectronics for Neural Networks, 1996., Proceedings of Fifth International Conference on

Conference_Location

Lausanne

ISSN

1086-1947

Print_ISBN

0-8186-7373-7

Type

conf

DOI

10.1109/MNNFS.1996.493771

Filename

493771