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Direct Measurement of Internal Flow Velocities in a Star-Slot ModelThis paper presents the results of a cold flow experiment to make direct measurements of the velocity distribution in a model of a solid rocket motor star grain propellant slot. The experimental procedure utilizes a multi-component laser Doppler velocimeter (LDV) and an apparatus for seeding the flow with aluminum particles to determine the velocity components at various discrete locations within the star slot. The test article used in this investigation was a one-tenth scale, cold flow model based on the geometry of the Space Shuttle solid rocket motor head-end section. The results obtained for the direct measurements of velocity are compared to velocities calculated from measured pressure distributions to data obtained from oil smear experiments and flow visualization videos, and to heat transfer calorimeter data.
Document ID
19990064221
Acquisition Source
Marshall Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Foster, Winfred A., Jr.
(Auburn Univ. AL United States)
Jenkins, Rhonald M.
(Auburn Univ. AL United States)
Hengel, John E.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Smith, Andrew W.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1997
Subject Category
Spacecraft Propulsion And Power
Meeting Information
Meeting: Joint Propulsion
Location: Seattle, WA
Country: United States
Start Date: July 1, 1997
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
CONTRACT_GRANT: NAG8-923
Distribution Limits
Public
Copyright
Other

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