Subscale solid rocket motor infrared signature and particle behavior.

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Author
Racine, John A.
Date
1991-12Advisor
Netzer, D.W.
Second Reader
Laredo, David
Metadata
Show full item recordAbstract
A combined optical and particle collection probe which
employed an in situ particle size distribution measurement method
and an infrared camera were used to obtain data that could be
used to validate solid propellant rocket motor plume signature
prediction codes. The probe design was optimized and the
required rates for window purge and ejector flows were determined
which provided proper functioning of the probe when placed in the
supersonic region of the plume. At the nozzle exit the particle
size distribution was quadramodal with most particles smaller
than 0.5u and the largest particles with diameters less than 25\i.
The larger particles at the nozzle exhaust were not present
further aft in the plume. This behavior was believed to result
from breakup of the large Al2 3 particles in the plume Mach
discs. However, further work is required to determine if the probe alters the particle size distribution.
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