Non-Axisymmetric Infrared Plume Tomography for Rocket Plume Species and Temperature Distributions

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$99,758.00
Award Year:
2003
Program:
STTR
Phase:
Phase I
Contract:
NAS13-03017
Award Id:
61858
Agency Tracking Number:
020056
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
603 E. Robinson Suite 7, Carson City, NV, 89701
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
JeffreyMuss
() -
jmuss@sierraengineering.com
Business Contact:
MargoHornung
Business Official
(775) 885-8483
margo@sierraengineering.com
Research Institute:
Cal Poly State University Foundation
Michael Fish
1 Grand Avenue
San Luis Obispo, CA, 93407
(805) 756-2982
Nonprofit college or university
Abstract
Spatial uniformity within combustion devices, especially circumferential, is extremely important to the reliability and durability of a liquid rocket engine. Conventional combustion diagnostics, e.g. pressure and thrust, characterize global engine behavior, but provide no direct information about thermal and species distributions across the engine. Sierra Engineering has shown that exhaust plume measurements can provide many of these details with sensitivity much greater than conventional diagnostics. We have developed a turn-key infrared emission-absorption spectroscopy system capable of planar measurements across a rocket exhaust plume. Data reduction from this single spectrometer system requires that the flow field be assumed axisymmetric. However, simultaneous measurements from three spectrometers allow complete resolution of non-axisymmetric flow fields. The necessary tomographic data reconstruction techniques are commonly employed in the medical field for CAT-scan analyses. The subject proposal adapts the current Sierra emission-absorption plume diagnostic to a compact fiber-optic system suitable for deployment under realistic rocket test situations. The fiber-optic system enables the integration of three sensor systems into a single test setup, thereby permitting accurate characterization of non-axisymmetric flow fields.

* information listed above is at the time of submission.

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