Accession Number : ADA314322

Title :   Microelectromechanical Systems for Aerodynamics Applications.

Descriptive Note : Technical memo.,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

Personal Author(s) : Mehregany, Mehran ; DeAnna, Russell G. ; Reshotko, Eli

PDF Url : ADA314322

Report Date : SEP 1996

Pagination or Media Count : 15

Abstract : Microelectromechanical systems (MEMS) embodies the integration of sensors, actuators, and electronics on a single substrate using integrated circuit fabrication techniques and compatible micromachining processes. Silicon and its derivatives form the material base for the MEMS technology. MEMS devices, including microsensors and microactuators, are attractive because they can be made small (characteristic dimension about microns), be produced in large numbers with uniform performance, include electronics for high performance and sophisticated functionality, and be inexpensive. MEMS pressure sensors, wall-shear-stress sensors, micromachined hot-wires are nearing application in aeronautics. MEMS actuators face a tougher challenge since they have to be scaled (up) to the physical phenomena that are being controlled. MEMS actuators are proposed, for example, for controlling the small structures in a turbulent boundary layer, for aircraft control, for cooling, and for mixing enhancement Data acquisition or control logistics require integration of electronics along with the transducer elements with appropriate consideration of analog-to-digital conversion, multiplexing, and telemetry. Altogether, MEMS technology offers exciting opportunities for aerodynamics applications both in wind tunnels and in flight.

Descriptors :   *INTEGRATED SYSTEMS, *MICROELECTRONICS, *AERODYNAMICS, CONTROL, ELECTRONICS, METHODOLOGY, OPTIMIZATION, DETECTORS, AIRCRAFT, MACHINING, PHYSICAL PROPERTIES, MATERIALS, STRUCTURES, FABRICATION, TURBULENT BOUNDARY LAYER, INTEGRATED CIRCUITS, SUBSTRATES, COOLING, AERONAUTICS, SILICON, PRESSURE, INFLIGHT, DATA ACQUISITION, LOGISTICS, TRANSDUCERS, MIXING, ACTUATORS, MULTIPLEXING, ANALOG TO DIGITAL CONVERTERS, WIND TUNNELS, TELEMETER SYSTEMS, MICROMINIATURIZATION.

Subject Categories : Aerodynamics
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE