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Liquid jet breakup and atomization in rocket chambers under dense spray conditionsTwo advanced diagnostic techniques were established and employed in this project. The first technique involves the use of a real-time x ray radiography system along with a high-speed CCD Xybion camera and an advanced digital image processor to investigate the breakup processes of the liquid core. The focus of this part of the project is to determine the inner structure of the liquid jet and via thin sheets of laser light, with the scatters light being photographed by a Xybion electronic camera synchronized to the laser pulse. This technique, which is capable of recording the breakup event occurring within 25 nano-seconds, enables us to freeze the motions of the jet and liquid droplets. The focus of this part of the project is to determine the outer structure of the liquid jet and to discover the configuration of the surface waves, the spray pattern, and the droplet size distribution in the non-dilute region. Results obtained by these two advanced diagnostic techniques will provide the much needed database for model development and accurate prediction of engine performance. The present work also represents a breakthrough in the area of advanced diagnostics of dense sprays.
Document ID
19910018913
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kuo, Kenneth K. (Pennsylvania State Univ. University Park, PA, United States)
Cheung, Fan-Bill (Pennsylvania State Univ. University Park, PA, United States)
Woodward, Roger D. (Pennsylvania State Univ. University Park, PA, United States)
Garner, Kenneth N. (Pennsylvania State Univ. University Park, PA, United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1991
Publication Information
Publication: NASA, Washington, Space Transportation Propulsion Technology Symposium. Volume 2: Symposium Proceedings
Subject Category
Spacecraft Propulsion And Power
Accession Number
91N28227
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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