The first in-flight flying qualities experiment using the variable stability X-22A aircraft investigated longitudinal flying qualities requirements for STOL aircraft in terminal area operations. Emphasis was placed on defining minimum requirements for the short-term response in VFR and IFR landing approaches at representative steep STOL approach conditions of 65 and 80 knots. Evaluation flights were conducted in negligible and moderate turbulence for a wide range of short-term frequencies and dampings. The results were compared with the short-term requirements of MIL-F-83300. The specified Level 1 and 2 VFR boundaries were found to be approximately valid in moderate turbulence for both VFR and IFR flight conditions. In negligible turbulence, the specified VFR Level 2 boundary was also approximately valid but the Level 1 boundary was found to be too stringent. Pilot rating gradients with damping were more apparent than with frequency for the range investigated.


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    Titel :

    An experimental investigation of STOL longitudinal flying qualities in the landing approach using the variable stability X-22A aircraft.


    Beteiligte:
    Schuler, J. M. (Autor:in) / Smith, R. E. (Autor:in) / Lebacqz, J. V. (Autor:in)

    Kongress:

    American Helicopter Society, Annual National Forum ; 1972 ; Washington, DC


    Erscheinungsdatum :

    1972-05-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :