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  • Other Sources  (3)
  • 1970-1974  (3)
  • 1965-1969
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  • 1
    Publication Date: 2019-06-27
    Description: The oxygen system cleaning specifications drawn from 23 industrial and government sources are presented along with cleaning processes employed for meeting these specifications, and recommended postcleaning inspection procedures for establishing the cleanliness achieved. Areas of agreement and difference in the specifications, procedures, and inspection are examined. Also, the lack of clarity or specificity will be discussed. This absence of clarity represents potential safety hazards due to misinterpretation. It can result in exorbitant expenditures of time and money in satisfying unnecessary requirements.
    Keywords: BIOTECHNOLOGY
    Type: NASA-SP-3072
    Format: application/pdf
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  • 2
    Publication Date: 2019-06-27
    Description: The concept of time to first failure is utilized to perform a parameter study of scatter factors of aircraft structures. The Weibull distribution is used for estimation of characteristic and certifiable lives. Scatter factors for various Weibull-shaped parameters, fleet sizes and level of reliabilities are calculated. It is concluded that the currently used range of scatter factors (2 through 4) is too narrow for the estimation of a safe life and that a safe and economical design for structural materials with shape parameters less than 2 does not seem feasible except for very small fleet sizes and low levels of reliability.
    Keywords: STRUCTURAL MECHANICS
    Type: NASA-CR-2100
    Format: application/pdf
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  • 3
    Publication Date: 2019-06-27
    Description: Oxygen system cleaning specifications have been drawn from twenty-three government and industrial sources. Cleaning processes for meeting these specifications and recommended postcleaning inspection procedures are compiled in handbook. Microfiche supplement of pertinent pages of listed references is included.
    Keywords: MATERIALS
    Type: LEW-11963
    Format: application/pdf
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