ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Inorganic Chemistry  (7)
  • STRUCTURAL MECHANICS  (3)
  • Spacecraft Design, Testing and Performance  (2)
Collection
Keywords
Publisher
Years
  • 1
    facet.materialart.
    Unknown
    Man's flight in space (1964)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Apollo project - progress and national benefits
    Keywords: STRUCTURAL MECHANICS
    Type: Proceedings of the Fourth National Conference on the Peaceful Uses of Space; NASA-SP-51
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    Structural mechanics of deformation and fracture Quarterly progress report (1966)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Structural mechanics of deformation and fracture - responses of model viscoelastic materials to impact
    Keywords: STRUCTURAL MECHANICS
    Type: NASA-CR-80918
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 3
    facet.materialart.
    Unknown
    CFRP Dimensional Stability Investigations for Use on the LISA Mission Telescope (2011)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: The Laser Interferometer Space Antenna (LISA) is a mission designed to detect low frequency gravitational-waves. In order for LISA to succeed in its goal of direct measurement of gravitational waves, many subsystems must work together to measure the distance between proof masses on adjacent spacecraft. One such subsystem, the telescope, plays a critical role as it is the laser transmission and reception link between spacecraft. Not only must the material that makes up the telescope support structure be strong, stiff and light, but it must have a dimensional stability of better than 1 pm Hz(exp -1/2) at 3 mHz and the distance between the primary and the secondary mirrors must change by less than 2.5 micron over the mission lifetime. CFRP is the current baseline materiaL however, it has not been tested to the pico-meter level as required by the LISA mission. In this paper we present dimensional stability results, outgassing effects occurring in the cavity and discuss its feasibility for use as the telescope spacer for the LISA spacecraft.
    Keywords: Spacecraft Design, Testing and Performance
    Type: GSFC.JA.5667.2011
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 4
    facet.materialart.
    Unknown
    Analog study of the dynamics of a nonlinear Maxwell model material. (1966)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Mechanical behavior of materials with temperature dependent viscosity, using electric analogy on nonlinear Maxwell model
    Keywords: STRUCTURAL MECHANICS
    Type: ; ACE(
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 5
    facet.materialart.
    Unknown
    LISA Telescope Spacer Design Issues (2010)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The LISA mission observes gravitational waves by measuring the separations between freely floating proof masses located 5 million kilometers apart with an accuracy of - 10 picometers. The separations are measured interferometrically. The telescope is an afocal Cassegrain style design with a magnification of 80x. The entrance pupil has a 40 cm diameter and will either be centered on-axis or de-centered off-axis to avoid obscurations. Its two main purposes are to transform the small diameter beam used on the optical bench to a diffraction limited collimated beam to efficiently transfer the metrology laser between spacecraft, and to receive the incoming light from the far spacecraft. It transmits and receives simultaneously. The basic optical design and requirements are well understood for a conventional telescope design for imaging applications, but the LISA design is complicated by the additional requirement that the total optical path through the telescope must remain stable at the picometer level over the measurement band during the mission to meet the measurement accuracy. We describe the mechanical requirements for the telescope and the preliminary work that has been done to understand the materials and mechanical issues associated with the design of a passive metering structure to support the telescope and to maintain the spacing between the primary and secondary mirrors in the LISA on-orbit environment. This includes the requirements flowdown from the science goals, thermal modeling of the spacecraft and telescope to determine the expected temperature distribution, layout options for the telescope including an on- and off-axis design. Plans for fabrication and testing will be outlined.
    Keywords: Spacecraft Design, Testing and Performance
    Type: 8th International LISA Symposium; Jun 28, 2010 - Jul 02, 2010; Stanford, CA; United States
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 6
    Electronic Resource
    Electronic Resource
    Struktur und Schwingungsspektren von TrioxodifluoromolybdatenProfessor Fritz Seel zum 60. Geburtstage am 21. September 1975 gewidmet (1975)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 416 (1975), S. 256-262 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structure and Vibrational Spectra of Trioxodifluoromolybdates(NH4)2MoO3F2 crystallizes in the space group P212121 with a = 6.361(1); b = 7.488(1), c = 11.103(2) Å and Z = 4. According to a threedimensional X-ray structure analysis (596 reflections, R = 0.066) the polymer MoO3F22--ion consists of planar cis-dioxodifluoro units which are linked into an infinite chain by alternating short (1.880 Å) and long (2.007 Å) Mo—O bonds. The vibrational spectra of (NH4)2MoO3F2 and K2MoO3F2. H2O are discussed.
    Notes: (NH4)2MoO3F2 kristallisiert in der Raumgruppe P212121 mit a = 6,361(1) b = 7,488(1), c = 11,103(2) Å und Z = 4. Nach dem Ergebnis einer dreidimensionalen Röntgenstrukturanalyse (596 Reflexe, R = 0,066) liegen im MoO3F22--Ion planare cis-dioxodifluoro- Gruppen vor, die senkrecht dazu über alternierend kurze (1,880 Å) und lange (2,007 Å) Mo-O-Brückenbindungen zu unendlichen Ketten verknüpft sind. Die Schwingungsspektren von (NH4)2MoO3F2 und K2MoO3F2. H2O wurden registriert und zugeordnet.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19754160309
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Über Versuche zur Drucksynthese von HexachlorotitanatenProfessor Georg Brauer zum 60. Geburtstage gewidmet (1968)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 357 (1968), S. 172-176 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Experiments for preparing hexachlorotitanates by reaction of TiCl4 with alkali chlorides or calcium chloride in pressure bombs at 550-750°C are described. Pure K2TiCl6 and Cs2TiCl6 were obtained, whereas the reaction products from LiCl, NaCl and CaCl2 contained not more than 4 to 6.5 weight per cent of titanium. A content of up to 0.24 weight per cent trivalent titanium is found at higher temperatures resulting from evolution of elemental chlorine from the titanium tetrachloride.
    Notes: Es werden Versuche zur Darstellung von Hexachlorotitanaten aus TiCl4 und Alkalichlorid oder Calciumchlorid in Druckbomben bei Temperaturen von 550-750°C beschrieben. K2TiCl6 und Cs2TiCl6 können dabei rein und wasserfrei erhalten werden, während mit LiCl, NaCl und CaCl2 nur Produkte mit Titangehalten von max. 4 bis 6,5 Gew.-% entstehen. Mit steigender Versuchstemperatur treten in den Präparaten durch Cl2-Abspaltung aus dem TiCl4 entstandene Gehalte an dreiwertigem Titan auf, die bis zu 0,24 Gew.-% betragen können.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19683570403
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Schwingungsspektren und Struktur von Dioxotrifluoromolybdaten und -wolframaten (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 389 (1972), S. 177-187 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The infrared and Raman spectra of AIMeO2F3 (Me = Mo; AI = K, NH4, Rb, Cs, Tl; Me = W, AI = Rb, Cs) have been recorded and assigned. The postulated structure model of MeO2F3- has been confirmed by a single crystal X-ray study of CsMoO2F3. Octahedrally coordinated metal atoms are linked by cis-bridging fluorine atoms into infinite chains. The cis oxygen atoms are coplanar with the bridging fluorine atoms.
    Notes: Die Infrarot- und RAMAN-Spektren der Salze AIMoO2F3 (AI = K, NH4, Rb, Cs, Tl) und der erstmalig dargestellten AIWO2F3 (AI = Rb, Cs) wurden registriert und zugeordnet. Das daraus abgeleitete Strukturmodell für das Ion MeO2F3- wurde durch eine röntgenographische Strukturuntersuchung an CsMoO2F3 bestätigt. In MeO2F3- ist das Me-Atom verzerrt oktaedrisch koordiniert (MeO2F2F2/2). Die Oktaeder sind durch cis-stehende Fluoratome zu unendlichen Ketten verknüpft, die cis-dioxo-Gruppe steht koplanar zu den Brückenatomen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19723890209
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Neue Oxooxalatokomplexe des Molybdän(VI)Professor Josef Goubeau zum 75. Geburtstage am 31. März 1976 gewidmet (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 420 (1976), S. 203-209 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New Osooxalatocomplexes of Molybdenum (VI)The preparation of the compounds Cs2[Mo2O5F2(C2O4)] · H2O and Cs2[Mo2O4Cl4(C2O4)] · 2 H2O is reported. The structure of the complex anions, which are containing quadridentated oxalate ligands, is derived from their vibration spectra. The compounds [NR4]2[Mo2O4F4(C2O4)] with R = CH3 and C2H5 are examined for comparison.
    Notes: Die Darstellung der Verbindungen Cs2[Mo2O5F2(C2O4)] · H2O und Cs2[Mo2O4Cl4(C2O4)] · 2 H2O wird beschrieben. Zur Konstitutionsbestimmung der komplexen, vierzähnige Oxalatliganden enthaltenden Anionen werden ihre Schwingungsspektren sowie diejenigen der zu Vergleichszwecken hergestellten Verbindungen [N(CH3)4]2[Mo2O4F4 (C2O4)] und [N(C2H5)4]2[Mo2O4 F4(C2O4)] gemessen und teilweise zugeordnet.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764200303
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Die IR-Spektren einiger Alkalisalze von Oxosäuren unter hohen Drücken (1979)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 451 (1979), S. 103-108 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: I.R. Spectra of Some Alkali Salts of Oxo-acids at High PressuresThe I.R. spectra of KNO3, K2CO3, CaCO3, KClO3, KBrO3, KJO3, NaHCO2, NaCH3CO2, und Na2C2O4 under pressures up to 48 kbar are presented and the pressure induced variations are discussed.
    Notes: Die IR-Spektren von KNO3, K2CO3, CaCO3, KClO3, KBrO3, KJO3, NaHCO2, NaCH3CO2 und Na2C2O4 unter Drücken bis zu 48 kbar werden mitgeteilt und die druckinduzierten Änderungen der Spektren werden diskutiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19794510115
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...