Two methods for extracting stability derivatives from flight data are compared. A modified Newton-Raphson minimization technique and a digital-analog (hybrid) matching technique were used to analyze the same data maneuvers obtained from two aircraft. About 55 maneuvers of an F-111E aircraft were analyzed over a Mach number range of 0.3 to 2.0 and an angle of attack range of 3 to 19 degrees. About 15 maneuvers were analyzed for the X-24A lifting body at Mach numbers of 0.8 and 0.9 and an angle of attack range of 4 to 13 degrees. Stability derivatives were extracted from these maneuvers, and the results from the two techniques along with wind tunnel results were compared. (Modified author abstract)


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    Title :

    A Comparison and Evaluation of Two Methods of Extracting Stability Derivatives from Flight Test Data


    Contributors:
    P. W. Kirster (author) / L. G. Ash (author)

    Publication date :

    1974


    Size :

    86 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English