Project Title:

Laser Velocimetry Processor for Hypersonic Flows

02.05-0056
Laser Velocimetry Processor for Hypersonic Flows
Physical Research, Inc.
25500 Hawthorne Boulevard - #2300
Torrance
CA
90505-6828
Dariush
Modarress
(213-378-0056)
ARC

Abstract:

Accurate and detailed experimental data such as velocity distributions in complex
flow fields at hypersonic speeds are required for validation of the analysis methods
of computational fluid dynamics. While laser velocimetry (LV) has been successfully
used in transonic and supersonic flows, its application to hypersonic flows requires
signal processors which are generally not available to date. The purpose of this
project is to develop LV signal processors which can accept and process signals from
small (0.2 to 0.3 micron) particles, analyze Doppler signals with frequencies of
100 MHz and higher, provide a wide dynamic range for the signal frequency and amplitude,
and operate in flows of short duration.
During Phase I of the project, the system design will be completed for a LV processor
capable of measuring three components of velocity for high-speed flows. The processor
will be based on 32-bit architecture and will be developed and delivered to NASA
during Phase II of the program.

Potential Commercial Application:

Potential Commercial Applications:  The product would be a laser velocimetry signal
processor for research in three dimensional, hypersonic flows in short-duration wind
tunnels.