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  • METEOROLOGY AND CLIMATOLOGY  (5)
  • Humans
  • STRUCTURAL MECHANICS
  • 2005-2009
  • 1990-1994
  • 1980-1984  (6)
  • 1981  (6)
  • 1
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    Design considerations for composite fuselage structure of commercial transport aircraft (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The structural, manufacturing, and service and environmental considerations that could impact the design of composite fuselage structure for commercial transport aircraft application were explored. The severity of these considerations was assessed and the principal design drivers delineated. Technical issues and potential problem areas which must be resolved before sufficient confidence is established to commit to composite materials were defined. The key issues considered are: definition of composite fuselage design specifications, damage tolerance, and crashworthiness.
    Keywords: STRUCTURAL MECHANICS
    Type: NASA-CR-159296 , LR-29540
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    The development of convective instability, wind shear, and vertical motion in relation to convection activity and synoptic systems in AVE 4 (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Data from the Fourth Atmospheric Variability Experiment were used to investigate conditions/factors responsible for the development (local time rate-of-change) of convective instability, wind shear, and vertical motion in areas with varying degrees of convective activity. AVE IV sounding data were taken at 3 or 6 h intervals during a 36 h period on 24-25 April 1975 over approximately the eastern half of the United States. An error analysis was performed for each variable studied.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-CR-3386 , M-342
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Cloud-encounter and particle-concentration variabilities from GASP data (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Summary statistics, tabulations, and variability studies are presented for cloud encounter and particle concentration data taken as part of the NASA global atmospheric sampling program. Cloud encounter was experienced in about 15 percent of the data samples; however, the percentage varies with season, latitude, and altitude (particularly distance from the tropopause). In agreement with classical storm models, the data show more clouds in the upper troposphere in anticyclones than in cyclones. The concentration of particles with a diameter greater than 3 micron also varies with time and location, depending primarily on the horizontal extent of cloudiness. Some examples of the application of the statistical data to the estimation of the frequency of cloud encounter and laminar flow loss to be expected on long range airline routes are also presented.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-TP-1886 , L-14483
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Cloud encounter and particle density variabilities from GASP data (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Summary statistics and variability studies are presented for cloud encounter and particle number density data as part of the NASA Global Atmospheric Sampling Program (GASP) aboard commercial Boeing 747 airliners. On the average, cloud encounter is shown on about 15% of the 52,164 data samples available; this value varies with season, latitude, synoptic weather situation, and distance from the tropopause. The number density of particles (diameter greater than 3 microns) also varies with time and location, and depends on the horizontal extent of cloudiness.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: AIAA PAPER 81-0308 , Aerospace Sciences Meeting; Jan 12, 1981 - Jan 15, 1981; St. Louis, MO
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Warm/cold cloud processes (1981)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Final development of a gravimetric test for performance evaluation of a precision saturator is described. The design and development of a prototype droplet levitation chamber is discussed. Technical assistance to the MSFC Airborne Laser Doppler Program is reported.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-CR-161633
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    The Numerical Studies Program for the Atmospheric General Circulation Experiment (AGCE) for Spacelab Flights (1981)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The atmospheric general circulation experiment (AGCE) numerical design for Spacelab flights was studied. A spherical baroclinic flow experiment which models the large scale circulations of the Earth's atmosphere was proposed. Gravity is simulated by a radial dielectric body force. The major objective of the AGCE is to study nonlinear baroclinic wave flows in spherical geometry. Numerical models must be developed which accurately predict the basic axisymmetric states and the stability of nonlinear baroclinic wave flows. A three dimensional, fully nonlinear, numerical model and the AGCE based on the complete set of equations is required. Progress in the AGCE numerical design studies program is reported.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-CP-2200 , M-366 , Apr 14, 1981 - Apr 15, 1981; Boulder, CO; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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