Dual-Beam Multiple Wavelength Light Transmittance Measurement For Particle Sizing in Rocket Motor Plumes

reportActive / Technical Report | Accession Number: ADA272491 | Open PDF

Abstract:

A multiple-wavelength light transmittance measurement system previously used in a laboratory environment to study particles in solid rocket propellant exhaust plumes was modified for use in the field, where high levels of vibration can degrade the accuracy of data. The system was converted from a single light beam configuration to a dual beam configuration which was capable of obtaining a complete set of 1024 reference and scene measurements in 10.0 ms. Modifications included designing, building and testing a new analog-to-digital data converter trigger circuit, and a rotating-wheel light chopper. Optical components including beam splitters, lenses, and a fiber optic cable were installed, and existing data collection system software was modified. The new system was tested by measuring soot from an oxyacetylene torch to prove the design concept. Test results and system performance were documented. Recommendations for further modifications, improvements and applications are presented.

Author(s):
Taylor, Kevin B.
Author Organization(s):
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Descriptive Note:
Master's thesis,
Pagination:
0050

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Monitor Series:
PL**
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_1.2.5_Lessons Learned; JCA_5.3_Planning; JCA_1.2.3_Educating; JCA_1.2.7_Experimentation
Communities of Interest:
Weapons Technologies
Descriptor(s):
*LIGHT, *BEAM SPLITTING, *TRANSMITTANCE, *ROCKET ENGINES, *EXHAUST PLUMES, TEST AND EVALUATION, FIBER OPTICS, MEASUREMENT, OPTICS, PARTICLE SIZE, CIRCUITS, TRIGGER CIRCUITS, SOLID ROCKET PROPELLANTS, ROCKET PROPELLANTS, LENSES, TORCHES, ANALOG TO DIGITAL CONVERTERS, PLUMES, WHEELS, THESES, CABLES, SOOT, VIBRATION, ENVIRONMENTS, MODIFICATION
Field(s)/Group(s):
Optics, Combustion and Ignition, Solid Rocket Propellants
Keyword(s):
*DUAL BEAM, *MULTIPLE WAVELENGTH, OXYACETYLENE
Report Date:
1993 Jun 01