Project Title:

Experimental Investigation on the Detection of Transitioning Flow-Fields

03.05-0533
Experimental Investigation on the Detection of Transitioning Flow-Fields
Innovative Dynamics
Cornell University Research Park - 244 Langmuir Laboratory
Ithaca
NY
14850-1296
Joseph J.
Gerardi
(607-257-0533)
ARC

Abstract:

The objective of this project is to develop a unique, aerodynamic flow sensor that
will passively sense laminar, transitional, and turbulent boundary-layer flow. This
innovation incorporates a thin, solid-state polymer film that senses both normal
and shear boundary layer forces. Preliminary tests on the wing of a Grumman AA-5
test plane yielded data that resembles the classical Tollmien-Schlichting waves that
occur in the boundary layer transition region. This technology will be extended to
produce the advanced, passive, boundary-layer transition detection system that can
operate non-intrusively and reliably throughout the subsonic flight envelope. Prototype
hardware will consist of a piezoelectric sensor array strip with an integrated data
telemetry link. A data processing and display unit will receive and process the data
and display the stream-wise boundary layer profile in a real-time or averaging mode.
During Phase I, the prototype will be installed on the NASA F-104/FTF for flight
test and calibration.

Potential Commercial Application:

Potential Commercial Applications:  The boundary-layer transition detection system
could be used as a feedback sensor for an adaptive wing and for flow measurements
on wind tunnel models and flight test aircraft.