Project Title:

Airborne, Remote Sensing of Turbulent Air Motion

92-1-03.05-8157                                                   NAS02-13731
Airborne, Remote Sensing of Turbulent Air Motion
Turbulence Prediction Systems
3131 Indian Road
Boulder, CO  80301
Frederick C. Wilshusen                               (303-443-8157)

Abstract:

     An active infrared (IR) instrument that provides three-
dimensional information for use in the monitoring and study of
atmospheric turbulence will be developed. The innovation overcomes
the limitations that prevent the satisfactory use of present
gauging technology. The objective is to establish that a practical
laser can drive the system at 10 meters and that the physics is
sufficiently unique to provide accurate measurements. The project
will seek to generate computer models that combine the laser
physics, IR physics, airspeed, and three-dimensional wind for use
in concept testing and parameter definition. It will study IR
laser power transfer to the air and IR sensitivity properties to
detect the same. Additionally, it will determine the practical
size for the combined instrument in research aircraft. It is
anticipated that a practical device can be developed which would
measure three-dimensional wind speeds to well below 1 m/s with 5
percent or better accuracy.

Potential Commercial Application:

Potential Commercial Applications:  Expected NASA applications and
benefits are an opportunity to measure accurately three-
dimensional air motion from a moving aircraft. Other possible
applications include remote turbulence detection (from aircraft or
ground-based), and wake vortex detection (airborne or ground-
based).

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