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All Library Books, journals and Electronic Records Telegrafenberg

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  • AERODYNAMICS  (2.110)
  • ASTRONOMY  (1.188)
  • 1975-1979  (3.298)
  • 1
    facet.materialart.
    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-08-28
    Beschreibung: Prandtl's method of sources and sinks for air foils is used to investigate the aerodynamics of circular wings in constant flow. Lift distribution, total lift, and pitching moment are investigated as well as the influence of changes in the angle of attack.
    Schlagwort(e): AERODYNAMICS
    Materialart: NASA-TM-75505
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Publikationsdatum: 2019-08-28
    Beschreibung: The numerical simulation of the transonic flows of idealized fluids and of incompressible viscous fluids, by the nonlinear least squares methods is presented. The nonlinear equations, the boundary conditions, and the various constraints controlling the two types of flow are described. The standard iterative methods for solving a quasi elliptical nonlinear equation with partial derivatives are reviewed with emphasis placed on two examples: the fixed point method applied to the Gelder functional in the case of compressible subsonic flows and the Newton method used in the technique of decomposition of the lifting potential. The new abstract least squares method is discussed. It consists of substituting the nonlinear equation by a problem of minimization in a H to the minus 1 type Sobolev functional space.
    Schlagwort(e): AERODYNAMICS
    Materialart: NASA-TM-75732
    Format: application/pdf
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  • 3
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    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-08-28
    Schlagwort(e): ASTRONOMY
    Materialart: NASA-NEWS-RELEASE-79-65 , P79-10051
    Format: application/pdf
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  • 4
    facet.materialart.
    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-08-28
    Schlagwort(e): ASTRONOMY
    Materialart: NASA-NEWS-RELEASE-79-18 , P79-10018
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    facet.materialart.
    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-08-28
    Schlagwort(e): ASTRONOMY
    Materialart: NASA-NEWS-RELEASE-79-36 , P79-10036
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
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    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-08-28
    Beschreibung: The International Ultraviolet Explorer (IUE), an Explorer class ultraviolet astronomy mission, is an international cooperative program between the United States, the United Kingdom (UK), and the European Space Agency (ESA) which provides for a single launch into geosynchronous orbit to conduct spectral distribution studies of celestial and solar system ultraviolet sources. The spacecraft and scientific instruments were designed and fabricated at the Goddard Space Flight Center. The spectrograph camera was provided by the UK; ESA provided the solar array as well as the European ground station. The IUE observatory system was designed to functionally resemble a ground-based optical observatory at which guest observers could execute observing programs in real time. Observatory performance substantially exceeded design and mission objectives. The secondary mission objectives were also met.
    Schlagwort(e): ASTRONOMY
    Materialart: NASA-TM-80471 , S-868-78-03 , REPT-2
    Format: application/pdf
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  • 7
    Publikationsdatum: 2019-08-28
    Beschreibung: A study of unusual gamma-ray bursts detected on March 5 and March 6, 1979 in the KONUS experiment on the Venera 11 and Venera 12 spacecraft shows their source to be flaring X-ray pulsar in Dorado.
    Schlagwort(e): ASTRONOMY
    Materialart: NASA-TM-75658 , REPT-617
    Format: application/pdf
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  • 8
    Publikationsdatum: 2019-08-28
    Beschreibung: Data from 30 nights of V 1357 Cyg observations in July, August, and September of 1977 are presented. The contribution of the disk to the optic brightness of the system is computed with regard for the heating of its surface by ultraviolet radiation from V 1357 Cyg and X-ray radiation from Cyg X-1. The disk radiation explains the irregular variability in the system brightness. The possibility of the eclipse of the star by the disk and the disk by the star is discussed.
    Schlagwort(e): ASTRONOMY
    Materialart: NASA-TM-75677 , PR-408
    Format: application/pdf
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  • 9
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    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-08-28
    Beschreibung: The objectives of the Workshop were as follows: (1) to assess the current understanding of fixed wing and rotorcraft operational icing environments and problems (2) to evaluate facilities requirements for R&D and certification purposes (3) to examine means of improving icing forecasts (4) to identify shortcomings in aeronautical icing knowledge which can be alleviated by new research and instrumentation development.
    Schlagwort(e): AERODYNAMICS
    Materialart: NASA. Lewis Res. Center Aircraft Icing; 3 p
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
    facet.materialart.
    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-08-28
    Beschreibung: A six-meter radio antenna having 900 reflector elements arranged on a 579 -meter diameter circle and located in the northern part of the Caucasian Mountains is described. The elements are about 7.4 m by 2 m resulting in a total reflector surface of about 10,000 sq m. Individual elements can be adjusted by changing 260 screws and can be rotated both horizontally and vertically as well as being moved translationally in the radial direction. The circular area is equipped with a grid of tracks where four asymmetric cylindrical paraboloids serving as subreflectors are located. The directional profile or observational direction of the antenna is achieved by shifting the subreflectors and changing the position of the reflecting elements with respect to the subreflectors. Different radio sources can be observed at the same time by using different subreflectors and their associated reflector sectors. Each subreflector is connected to a receiving station. Capabilities for spectroscopic observation are discussed.
    Schlagwort(e): ASTRONOMY
    Materialart: NASA-TM-75396
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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