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  • 1
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    Comparison of three thrust calculation methods using in-flight thrust data (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The gross thrust of an experimental airplane was determined by each method using the same flight maneuvers and generally the same data parameters. Coefficients determined from thrust stand calibrations for each of the three methods were then extrapolated to cruise flight conditions. The values of total aircraft gross thrust calculated by the three methods for cruise flight conditions agreed within + or - 3 percent. The disagreement in the values of thrust calculated by the different techniques manifested itself as a bias in the data. There was little scatter (0.5 percent) for the thrust levels examined in flight.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA-TM-81360 , H-1141
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Dynamic test techniques - Concepts and practices (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: An initial investigation of dynamic flight test analysis techniques indicated that a strict, comprehensive force-moment accounting system would be necessary. An implementation of the longitudinal force-moment accounting system provided excellent results in accounting for small lift/drag and tail deflection changes. Attention is given to gross thrust calculation, instrumentation, maneuvers, and aspects of data correlation. The results of the studies demonstrate that it is possible to generate a lift/drag model which is capable of predicting performance from nearly any maneuver.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: Annual Symposium on The many disciplines of flight test; Aug 04, 1976 - Aug 06, 1976; Eastsound Orcas Island, WA
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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