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  • 1985-1989  (5)
  • 1
    Electronic Resource
    Electronic Resource
    The effects of ethanol on embryonic actin: A possible role in teratogenesis (1986)
    Springer
    Cellular and molecular life sciences 42 (1986), S. 575-577 
    Details
    ISSN: 1420-9071
    Keywords: Ethanol ; neural crest cells ; teratogenesis ; actin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary When the neural crest is cultured in the long or short term presence of ethanol, monoclonal anti-actin reveals the development of a disorganized actin cytoskeleton. In the long term, many cells fail to differentiate morphologically, whereas in the short term already differentiated cells rapidly alter their shape and their cell-to-cell contacts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01946710
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    Paper (German National Licenses)
    Fulltext
  • 2
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    The effects of ethanol on embryonic actin: A possible role in teratogenesis (1986)
    Springer
    Details
    Publication Date: 1986-05-01
    Print ISSN: 0014-4754
    Topics: Biology , Medicine
    Published by Springer
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    PAPER CURRENT
  • 3
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    Remote pivot decoupler pylon: Wing/store flutter suppressor (1986)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A device for suspending a store from an aerodynamic support surface, such an an aircraft wing, and more specifically, for improving upon singlet pivot decoupler pylons by reducing both frequency of active store, alignment, and alignment system space and power requirements. Two links suspend a lower pylon/rack section and releasable attached store from an upper pylon section mounted under the wing. The links allow the lower pylon section to rotate in pitch about a remote pivot point. A leaf spring connected between the lower section and electrical alignment system servomechanism provides pitch alignment of the lower section/store combination. The servomechanism utilizes an electric servomotor to drive the gear train and reversibly move the leaf spring, thereby maintaining the pitch attitude of the store within acceptable limits. The damper strokes when the lower section rotates to damp large oscillations of store.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Design and Fabrication of the NASA Decoupler Pylon for the F-16 Aircraft, Addendum 2 (1985)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The decoupler pylons which were originally designed and assembled with bushings in the pivot joints were retrofitted with roller bearings. This retrofit, the supporting analyses and the fixture tests of the modified pylons are reported in this document. The loads and stress analysis was directed toward the redesigned parts which were the pylon links and pins. The loads and stress analysis indicates that the pylons with the bearing installation have reduced capacity with respect to the bushing design. Fixture tests of the redesigned pylons were conducted in the GD/FW facility. Breakout friction tests and vibration tests were conducted. The tests show that the joint friction is approximately one-half the level with bearings as compared with the bushing installation. The vibration test data was used to tune the pylon mathematical simulation and this revised pylon simulation was used to recompute airplane modes of vibration. These computed modes of vibration were used in complete airplane symmetric and antisymmetric flutter and aeroservoelastic analyses.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA-CR-172494 , NAS 1.26:172494
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Design and Fabrication of the NASA Decoupler Pylon for the F-16 Aircraft (1985)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The NASA Decoupler Pylon is a passive means of suppressing wing-store flutter. The feasibility of demonstrating this concept on the F-16 aircraft was established through model wind tunnel tests and analyses. As a result of these tests and studies a ship set of Decoupler Pylons was designed and fabricated for a flight test demonstration on the F-16 aircraft. Basic design criteria were developed during the analysis study pertaining to pylon pitch stiffness, alignment system requirements, and damping requirements. A design was developed which utilized an electrical motor for the pylon alignment system. The design uses a four pin, two link pivot design which results in a remote pivot located at the center of gravity of the store when the store is in the aligned position. The pitch spring was fabricated from a tapered constant stress cantilevered beam. The pylon has the same external lines as the existing production pylon and is designed to use a MAU-12 ejection rack which is the same as the one used with the production pylon. The detailed design and fabrication was supported with a complete ground test of the pylon prior to shipment to NASA.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA-CR-172354 , NAS 1.26:172354
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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