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Hydroxyl Tagging Velocimetry for Rocket Plumes

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2008 / STTR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
MetroLaser, Inc.
22941 Mill Creek Drive Laguna Hills, CA 92653-1215
View profile »
Woman-Owned: No
Minority-Owned: Yes
HUBZone-Owned: No
Phase 1
Fiscal Year: 2008
Title: Hydroxyl Tagging Velocimetry for Rocket Plumes
Agency: NASA
Contract: NNX08CD52P
Award Amount: $100,000.00


To address the need for non-intrusive sensors for rocket plume properties, we propose a laser-based velocity diagnostic that does not require seeding, works in high or low temperature flows, and can be used over a broad range of velocities. Hydroxyl tagging velocimetry (HTV) "writes" a line of OH molecules into the flow and interrogates them after a short delay to determine the velocity. Since the markers are molecules, the method measures the gas velocity directly, avoiding errors due to particle drag associated with seeded techniques. The only requirement is that H2O molecules must be present in the flow, which is easily met by most rocket plume applications. Because OH molecules survive at high temperatures for appreciable lifetimes, it is anticipated that the HTV technique will work in even the highest temperature rocket plumes. The proposed diagnostic will provide measurements not obtainable by current methods, and will enable experimental data that can be used for validating computer models for rocket engine performance predictions.

Principal Investigator:

Thomas P. Jenkins
Principal Investigator

Business Contact:

Christina L. Arnold
Director of Administration
Small Business Information at Submission:

MetroLaser, Inc.
8 Chrysler Irvine, CA 92618

EIN/Tax ID: 330584881
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
Vanderbilt University
110 21st Avenue South, Baker Bldg. #937
Nashville, TN 37203 2641
Contact Phone: (615) 322-3979
RI Type: Nonprofit college or university