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  • 1
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    LeRC cryogenic fluid management program overview (1987)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: An overview is given of the Lewis Research Center's cryogenic fluid management program in the form of viewgraphs. Objectives, approach, program elements, cost analysis, modeling, and flight experiment development are outlined.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: Cryogenic Fluid Management Technology Workshop. Volume 1: Presentation Material and Discussion; p 83-97
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Outlet baffles: Effect on liquid residuals from zero-gravity draining of hemispherically ended cylinders (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: An experimental investigation was conducted to study the relative effectiveness of various outlet baffles in reducing liquid residuals resulting from the draining of hemispherically ended cylindrical tanks in a weightless environment. Three different baffles were employed. The relative effectiveness of each baffle was determined by comparing the results obtained, in the form of liquid residuals, with results for an unbaffled tank. Data indicate that all the baffles tested reduced residuals. Reductions betweem 10 and 60 percent were obtained, depending on baffle geometry and outlfow Weber number.
    Keywords: FLUID MECHANICS
    Type: NASA-TM-X-2631 , E-6986
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Experimental investigation of an axisymmetric free jet with an initially uniform velocity profile (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: An experimental investigation was conducted to determine the flow characteristics of a circular free helium jet having an initially uniform velocity profile. Complete velocity profiles are presented at Reynolds numbers of 1027 and 4571 at 0, 3, 6, 10, 15, and 20 nozzle diameters (where possible) from the nozzle exit. Centerline velocity decay and potential core length were obtained over a range of Reynolds numbers from 155 to 5349 at distances up to and including 25 nozzle diameters from the nozzle exit. The angles of spread associated with the diffusion of the jet downstream of the nozzle are also given. Axial jet momentum flux and entrained mass flux, at various distances downstream of the nozzle, are presented as a function of the jet Reynolds number.
    Keywords: FLUID MECHANICS
    Type: NASA-TN-D-6783 , E-6801
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Effect of throttling on interface behavior and liquid residuals in weightlessness (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: An experimental investigation was conducted to study liquid-vapor interface behavior and subsequent vapor ingestion in a flat-bottomed cylindrical tank following a single-step throttling in outflow rate in a weightless environment. A throttling process in which the final Weber number was one-tenth of the initial Weber number tended to excite large-amplitude symmetric slosh, with the amplitude generally increasing as initial Weber number increased. As expected, liquid residuals were lower than those obtained without throttling and, for moderate values of initial Weber number, could be adequately predicted by assuming that all draining took place at the final Weber number. At large values of Weber number, residuals tended to be lower than this predicted value.
    Keywords: FLUID MECHANICS
    Type: NASA-TM-X-3034 , E-7833
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Normal Impingement of a Circular Liquid Jet onto a Screen in a Weightless Environment (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The normal impingement of a circular liquid jet onto a fine-mesh screen in a weightless environment was investigated. Equations were developed to predict the velocity of the emerging jet on the downstream side of the screen as a function of screen and liquid parameters and of the velocity of the impinging jet. Additionally, the stability of the emerging jet was found to be Weber number dependent. In general, excepting at high velocities, the screen behaved much as a baffle, deflecting the major portion of the impinging flow.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA-TM-X-3415 , E-8710
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Experimental investigation of an axisymmetric fully developed laminar free jet (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Dynamic characteristics of circular fully developed laminar free jet
    Keywords: FLUID MECHANICS
    Type: NASA-TN-D-6304 , E-6052
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Liquid transfer demonstration on board Apollo 14 during transearth coast (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The transfer of liquid from one container to another in a weightless environment was demonstrated by the crew of Apollo 14. A scale-model liquid-transfer system was used on board the spacecraft during the transearth coast period. The liquid transfer unit consisted of a surface tension baffled tank system containing two baffle designs. Liquid was transferred between tanks with a hand pump operated by the astronaut. The results showed that liquid was efficiently transferred to and from either baffled tank to within two percent of the design value residual liquid without reaching gas ingestion. The liquid-vapor interface in the receiver tank was positioned successfully with the gas located at the vent.
    Keywords: FLUID MECHANICS
    Type: NASA-TM-X-2410 , E-6481
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Liquid inflow to initially empty, hemispherical ended cylinders during weightlessness (1968)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Liquid-vapor interface stability during liquid inflow in cylindrical tank during weightlessness
    Keywords: FLUID MECHANICS
    Type: NASA-TN-D-4628
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Capillary device refilling (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: An analytical and experimental study was conducted dealing with refilling start baskets (capillary devices) with settled fluid. A computer program was written to include dynamic pressure, screen wicking, multiple-screen barriers, standpipe screens, variable vehicle mass for computing vehicle acceleration, and calculation of tank outflow rate and vapor pullthrough height. An experimental apparatus was fabricated and tested to provide data for correlation with the analytical model; the test program was conducted in normal gravity using a scale-model capillary device and ethanol as the test fluid. The test data correlated with the analytical model; the model is a versatile and apparently accurate tool for predicting start basket refilling under actual mission conditions.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: AIAA PAPER 80-1095 , Joint Propulsion Conference; Jun 30, 1980 - Jul 02, 1980; Hartford, CT
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    LeRC reduced gravity fluid management technology program (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The program reviewed in the present paper has provided information of the reduced-gravity behavior of fluids, thermal control of cryogenic tankage, and fluid management system design. The studies are currently shifting from the utilization of in-house experimental facilities to the development of Spacelab experiments. The cryogenic fluid management experiment, currently undergoing detailed design, is expected to provide an orbital evaluation of a subcritical liquid hydrogen storage and supply system, as part of the Shuttle/Spacelab program. Efforts are continuing to develop computer techniques for simulating reduced-gravity fluid dynamic processes.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: Propulsion Meeting; Mar 11, 1980 - Mar 13, 1980; Monterey, CA
    Format: text
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    NASA TECHNICAL REPORTS
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