ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
  • 1
    Call number: SR 90.0942(76)
    In: Ostwalds Klassiker der exakten Wissenschaften
    Type of Medium: Series available for loan
    Pages: 52 S.
    Series Statement: Ostwalds Klassiker der exakten Wissenschaften 76
    Language: German
    Location: Magazine - must be ordered
    Branch Library: GFZ Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Publication Date: 2016-06-07
    Description: Design changes that lead to improved aerodynamic and structural efficiency are presented. Practical design constraints and approaches for a blended wing-fuselage are discussed, as well as the integration of the configuration that leads to aerodynamic and structural efficiency. Highlighted are new approaches used to provide for structural efficiency, airline/passenger acceptance, passenger evacuation, and subsystem integration. Results of full-scale passenger cabin mock-up evaluations are presented showing the feasibility of the concept.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA. Langley Res. Center Proc. of the SCAR Conf., Pt. 2,; 18 p
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Publication Date: 2011-08-18
    Description: To improve the prospects for success in the market place, the family approach is essential to the design of future supersonic airplanes. The evolution from a basic supersonic airplane to a family could follow historic patterns, with one exception: substantial changes in passenger carrying capacity will be difficult by the conventional fuselage "doughnut" approach so successfully used on the cylindrical fuselage of subsonic airplanes. The primary reasons for this difference include the requirement for highly integrated "area ruled" configurations, to give the desired high supersonic aerodynamic efficiency, and other physical limitations such as takeoff and landing rotation. A concept for a supersonic airplane family that could effectively solve the variable range and passenger capacity problem provides for modification of the fuselage cross section that makes it possible to build a family of three airplanes with four, five, and six abreast passenger seating. This is done by replacing or modifying portions of the fuselage. All airplanes share the same wing, engines, and major subsystems. Only small sections of the fuselage would be different, and aerodynamic efficiency need not be compromised.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA. Langley Research Center Supersonic Cruise Res., 1979, Pt. 2; p 833-854
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2011-04-13
    Description: Assembly of cylinders, links, actuators, and gears permits landing-gear unit to be retracted into shadow of main engine intake ducts of supersonic transport aircraft. This is accomplished without adding to frontal area of aircraft or appreciably increasing total aircraft drag.
    Keywords: MECHANICS
    Type: ARC-10786
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Publication Date: 2019-07-13
    Description: An initial design study of high-transonic-speed transport aircraft has been completed. Five different design concepts were developed. These included fixed swept wing, variable-sweep wing, delta wing, double-fuselage yawed-wing, and single-fuselage yawed-wing aircraft. The boomless supersonic design objectives of range=5560 Km (3000 nmi), payload-18 143 kg (40 000lb), Mach=1.2, and FAR Part 36 aircraft noise levels were achieved by the single-fuselage yawed-wing configuration with a gross weight of 211 828 Kg (467 000 lb). A noise level of 15 EPNdB below FAR Part 36 requirements was obtained with a gross weight increase to 226 796 Kg (500 000 lb). Although wing aeroelastic divergence was a primary design consideration for the yawed-wing concepts, the graphite-epoxy wings of this study were designed by critical gust and maneuver loads rather than by divergence requirements. The transonic nacelle drag is shown to be very sensitive to the nacelle installation. A six-degree-of-freedom dynamic stability analysis indicated that the control coordination and stability augmentation system would require more development than for a symmetrical airplane but is entirely feasible. A three-phase development plan is recommended to establish the full potential of the yawed-wing concept.
    Keywords: AIRCRAFT
    Type: NASA-CR-114658
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Publication Date: 2015-01-21
    Description: The influence of plate boundary curvature on the large-scale stress and strain patterns in an overriding plate is explored using 2D numerical and 3D thermo-mechanical analogue experiments. Numerical experiments reveal that trench-parallel compression is produced near the symmetry axis of a seaward-concave plate boundary if in- terplate friction is high and/or the subducting lithosphere has a low flexural rigidity. In contrast, trench-parallel compression is reduced along the oblique parts of the plate boundary. However, both the stress conditions on the interplate zone and the 3-D geometry of this zone control whether the trench-parallel stress in the centre of the curvature is a tension or compression. Low dip angle and high convergence obliquity angle favour trench-parallel compression. In the central Andes, N-S minor shortening in the centre of the Arica bend and strike slip systems north and south of the symmetry axis suggest that the effect of shear traction dominated during Cenozoic time when the curvature of the plate boundary was forming. We therefore argue that the processes responsible for the formation of the plate boundary curvature were assisted by enhanced interplate friction and/or reduced compres- sive non-hydrostatic normal stress. 3D thermo-mechanical laboratory experiments of oceanic subduction along a seaward-concave plate boundary are performed in order to investigate the large-scale deformation pattern in the upper plate. However, model deformation was restricted to the fore-arc domain because high friction was only im- posed in the upper, shallow (0-50 km) part of the interplate zone. Nevertheless, the large-scale deformation pattern shows characteristics which fit observations in the Andes. Along the oblique section of the plate boundary, oblique subduction produces trench-parallel shearing of the fore-arc towards the centre of the curvature, significant trench- normal coaxial shortening but little to no trench-parallel coaxial shortening. This explains the excess-rotation obtained from paleomagnetic data and kinematic models. In contrasts, fore-arc deformation near the centre of the curvature includes the largest trench-normal coaxial shortening, significant trench-parallel coaxial shortening but no trench-parallel shearing. This strain pattern also corresponds to that obtained from kinematic models. Impor- tantly, the model deformation reveal that trench-normal coaxial shortening is locally shifted inland because of the trench-parallel coaxial shortening occurring in the frontal part of the fore-arc. We therefore argue that this pattern is an intrinsic characteristic of the 3D deformation along seaward-concave plate boundary due to high interplate friction. This characteristic may extend to the arc/back-arc deformation if the high interplate friction is extended further down the interplate zone and the entire fore-arc block is dragged laterally instead of only its frontal part.
    Type: http://purl.org/eprint/type/ConferencePaper
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Publication Date: 1971-07-01
    Print ISSN: 0028-1042
    Electronic ISSN: 1432-1904
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Publication Date: 1972-07-01
    Print ISSN: 0028-1042
    Electronic ISSN: 1432-1904
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Publication Date: 2013-03-02
    Description: Nature Physics 9, 139 (2013). doi:10.1038/nphys2545 Authors: F. Dolde, I. Jakobi, B. Naydenov, N. Zhao, S. Pezzagna, C. Trautmann, J. Meijer, P. Neumann, F. Jelezko & J. Wrachtrup Entanglement is the central yet fleeting phenomenon of quantum physics. Once being considered a peculiar counter-intuitive property of quantum theory, it has developed into the most central element of quantum technology. Consequently, there have been a number of experimental demonstrations of entanglement between photons, atoms, ions and solid-state systems such as spins or quantum dots, superconducting circuits and macroscopic diamond. Here we experimentally demonstrate entanglement between two engineered single solid-state spin quantum bits (qubits) at ambient conditions. Photon emission of defect pairs reveals ground-state spin correlation. Entanglement (fidelity = 0.67±0.04) is proved by quantum state tomography. Moreover, the lifetime of electron spin entanglement is extended to milliseconds by entanglement swapping to nuclear spins. The experiments mark an important step towards a scalable room-temperature quantum device being of potential use in quantum information processing as well as metrology.
    Print ISSN: 1745-2473
    Electronic ISSN: 1745-2481
    Topics: Physics
    Published by Springer Nature
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Publication Date: 1977-08-01
    Description: In sexual-hormone activity differences arise when only a minimum change in the structure of a known molecule is made. Even the physiological hormones have similar structures but extremely different properties. Small variations of the steroid molecule lead to orally active progestogens and estrogens. The discovery of orally active androgens and the development of anabolic agents and antiandrogens proceeds also by very small changes of known structures. Out of a million possible variations of the steroid molecule, the synthesis of approximately 80 000 structures has been realized. ©1977 Springer-Verlag
    Print ISSN: 0028-1042
    Electronic ISSN: 1432-1904
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...