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  • AERODYNAMICS  (7)
  • LUNAR AND PLANETARY EXPLORATION  (5)
  • Binding Sites  (4)
  • INSTRUMENTATION AND PHOTOGRAPHY  (4)
  • ELECTRONIC COMPONENTS AND CIRCUITS
  • 1990-1994  (16)
  • 1965-1969  (7)
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  • 11
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    Finite wing aerodynamics with simulated glaze ice (1992)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-06-28
    Beschreibung: The effect of a simulated glaze ice accretion on the aerodynamic performance of a three-dimensional wing is studied experimentally. The model used for these tests was a semi-span wing of effective aspect ratio five, mounted from the sidewall of the UIUC subsonic wind tunnel. The model has an NACA 0012 airfoil section on a rectangular, untwisted planform with interchangeable leading edges to allow for testing both the baseline and the iced wing geometry. A three-component sidewall balance was used to measure lift, drag and pitching moment on the clean and iced model. A four-beam two-color fiberoptic laser Doppler velocimeter (LDV) was used to map the flowfield along several spanwise cuts on the model. Preliminary results from LDV scans, which will be the bulk of this paper, are presented following the force balance measurement results. Initial comparison of LDV surveys compare favorably with inviscid theory results and 2D split hot-film measurements near the model surface.
    Schlagwort(e): AERODYNAMICS
    Materialart: AIAA PAPER 92-0414
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 12
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    Leak locator for vacuum jacketed pipelines eliminates need for removal of outer jacket (1966)
    In:  CASI
    Details
    Publikationsdatum: 2019-05-29
    Beschreibung: Device for locating leaks in a vacuum-jacketed liquid-hydrogen transfer line consists of two Mylar discs, a source of nitrogen and helium gas, and a mass spectrometer. The outer jacket of the pipeline does not need to be removed for the locator to be used.
    Schlagwort(e): ELECTRONIC COMPONENTS AND CIRCUITS
    Materialart: MFS-888
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 13
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    Flowmeter measures low gas-flow rates (1966)
    In:  CASI
    Details
    Publikationsdatum: 2019-05-29
    Beschreibung: Positive-displacement flowmeter measures low gas-flow rates by gaging the time required for a slug of mercury to pass between two reference levels in a tube of known volume.
    Schlagwort(e): ELECTRONIC COMPONENTS AND CIRCUITS
    Materialart: MFS-215
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 14
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    Preliminary considerations of optical telescopes for lunar surface use (1965)
    In:  CASI
    Details
    Publikationsdatum: 2019-05-24
    Beschreibung: Design considerations of astronomical telescopes for lunar surface observation
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA-TN-D-3003
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 15
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    Analysis of wavelet technology for NASA applications (1994)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-28
    Beschreibung: The purpose of this grant was to introduce a broad group of NASA researchers and administrators to wavelet technology and to determine its future role in research and development at NASA JSC. The activities of several briefings held between NASA JSC scientists and Rice University researchers are discussed. An attached paper, 'Recent Advances in Wavelet Technology', summarizes some aspects of these briefings. Two proposals submitted to NASA reflect the primary areas of common interest. They are image analysis and numerical solutions of partial differential equations arising in computational fluid dynamics and structural mechanics.
    Schlagwort(e): AERODYNAMICS
    Materialart: NASA-CR-195929 , NAS 1.26:195929
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 16
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    Effect of a simulated ice accretion on the aerodynamics of a swept wing (1991)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-06-28
    Beschreibung: The effect of a simulated glaze ice accretion on the aerodynamic performance of a three-dimensional swept wing is studied experimentally. A semispan wing of effective aspect ratio four was mounted from the sidewall of the UIUC subsonic wind tunnel. The model uses a NACA 0012 airfoil section on a rectangular planform with interchangeable tip and root sections to allow for 0- and 30-degree sweep. A sidewall suction system is used to minmize the tunnel boundary-layer interaction with the model. Surface pressure data from five spanwise stations are compared to earlier data from a similar tunnel. A three-component sidewall balance has been designed, built and used to measure lift, drag and pitching moment on the clean and iced model. The data compare well to the integrated pressure data and to theory on the clean model. In addition, helium-bubble flow visualization has been performed on the iced model and reveals extensive spanwise flow in the separation bubble aft of the upper surface horn. This compares well to the computational results of other researchers. Sidewall suction was found to have no effect on the aerodynamics of the swept wing.
    Schlagwort(e): AERODYNAMICS
    Materialart: AIAA PAPER 91-0442
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 17
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    Aerodynamic measurements on a finite wing with simulated ice (1991)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-27
    Beschreibung: The effect of a simulated glaze ice accretion on the aerodynamic performance of a three-dimensional straight and swept wing is studied experimentally. A semispan wing of effective aspect ratio five was mounted from the sidewall of the UIUC subsonic wind tunnel. The model uses an NACA 0012 airfoil section on a rectangular planform with interchangeable tip and root sections to allow for 0- and 30-deg sweep. A sidewall suction system is used to minimize the tunnel boundary-layer interaction with the model. A three-component sidewall balance has been designed, built and used to measure lift, drag and pitching moment on the clean and iced model. Fluorescent oil flow visualization has been performed on the iced model and reveals extensive spanwise flow in the separation bubble aft of the upper surface horn. These results are compared to computational results for the surface pressures, span loads and surface oil flow.
    Schlagwort(e): AERODYNAMICS
    Materialart: AIAA PAPER 91-3217 , AIAA Applied Aerodynamics Conference; Sept. 23-25, 1991; Baltimore, MD; United States
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 18
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    Positive displacement flowmeter Patent (1967)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Positive displacement flowmeter for measuring extremely low flows of fluid with self calibrating features
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 19
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    Wind-tunnel investigation of the aerodynamic pressures on the Apollo command module configuration (1969)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Wind tunnel study of aerodynamic pressures on Apollo command module configuration
    Schlagwort(e): AERODYNAMICS
    Materialart: NASA-TN-D-5514
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 20
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    Declination rate and related interferometric schemes for precise satellite tracking Final report (1969)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Declination rate and related interferometric schemes for precise satellite tracking
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA-CR-107862 , TC-161
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
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