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  • 1
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    Statistical analysis of flight times for space shuttle ferry flights (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Markov chain and Monte Carlo analysis techniques are applied to the simulated Space Shuttle Orbiter Ferry flights to obtain statistical distributions of flight time duration between Edwards Air Force Base and Kennedy Space Center. The two methods are compared, and are found to be in excellent agreement. The flights are subjected to certain operational and meteorological requirements, or constraints, which cause eastbound and westbound trips to yield different results. Persistence of events theory is applied to the occurrence of inclement conditions to find their effect upon the statistical flight time distribution. In a sensitivity test, some of the constraints are varied to observe the corresponding changes in the results.
    Keywords: SPACE SCIENCES
    Type: NASA-CR-129021
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Application of Markov chain theory to ASTP natural environment launch criteria at Kennedy Space Center (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: To aid the planning of the Apollo Soyuz Test Program (ASTP), certain natural environment statistical relationships are presented, based on Markov theory and empirical counts. The practical results are in terms of conditional probability of favorable and unfavorable launch conditions at Kennedy Space Center (KSC). They are based upon 15 years of recorded weather data which are analyzed under a set of natural environmental launch constraints. Three specific forecasting problems were treated: (1) the length of record of past weather which is useful to a prediction; (2) the effect of persistence in runs of favorable and unfavorable conditions; and (3) the forecasting of future weather in probabilistic terms.
    Keywords: SPACE SCIENCES
    Type: NASA-CR-129044
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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