Title page for ETD etd-8197-115043


Type of Document Master's Thesis
Author Gimbert, Norman Wesley II
Author's Email Address norman.gimbert@ge.ae.com
URN etd-8197-115043
Title Development of a Sensor for Inflight Detection of Three-Dimensional Flow Separation on a Wing
Degree Master of Science
Department Aerospace and Ocean Engineering
Advisory Committee
Advisor Name Title
Simpson, Roger L.
Wlezien, RIchard W.
Schetz, Joseph A. Committee Chair
Keywords
  • Separated Flow
  • Detector
  • Aircraft
Date of Defense 1997-07-11
Availability unrestricted
Abstract
A real need exists for a sensor capable of detecting flow-field separation on an airplane

wing during routine flight operations. A sensor of this type could lead to both improved

flight safety and increased performance. It would also contribute to future separation

control technologies. A new idea is presented for a sensor that is cost effective, easy to

maintain, durable, and highly effective. The system, known as a Thermal Grid, works by

using a grid of heaters and temperature sensors to trace out the streamlines closest to the

surface. Specific singularities in these streamlines are excellent indicators of flow

separation. This paper addresses many of the necessary principles that are necessary to

making the Thermal Grid an operational device. An analytic design is presented that

details the system requirements and potential performance, including heater/sensor

spacing, heater power requirements, sensor time response and sensitivity needs and the

effects of changes in flow conditions.

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