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Liquid Propellant Manipulated AcousticallyFluids are difficult to manage in the space environment. Without gravity, the liquid and gas do not always remain separated as they do in the 1g environment of Earth. Instead the liquid and gas volumes mix and migrate under the influence of surface tension, thermodynamic forces, and external disturbances. As a result, liquid propellants may not be in a useable location or may even form a chaotic mix of liquid and gas bubbles. In the past, mechanical pumps, baffles, and a variety of specialized passive devices have been used to control the liquid and gas volumes. These methods need to be carefully tuned to a specific configuration to be effective. With increasing emphasis on long-term human activity in space there is a trend toward liquid systems that are more flexible and provide greater control. We are exploring new methods of manipulating liquids by using the nonlinear acoustic effects achieved by using beams of highly directed high-intensity acoustic waves.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Oeftering, Richard C.
(NASA Glenn Research Center Cleveland, OH, United States)
Chato, David J.
(NASA Glenn Research Center Cleveland, OH, United States)
Mann, Adin, III
Date Acquired
September 7, 2013
Publication Date
March 1, 2003
Publication Information
Publication: Research and Technology 2002
Subject Category
Spacecraft Propulsion And Power
Distribution Limits
Work of the US Gov. Public Use Permitted.
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