The Propfan Test Assessment (PTA) aircraft was flown to obtain glade stress and noise data for a 2.74m (9 ft.) diameter single rotation propfan. Tests were performed at Mach numbers to 0.85 and altitudes to 12,192m (40,000 ft.). The propfan was well-behaved structurally over the entire flight envelope, demonstrating that the blade design technology was completely adequate. Noise data were characterized by strong signals at blade passage frequency and up to 10 harmonics. Cabin noise was not so high as to preclude attainment of comfortable levels with suitable wall treatment. Community noise was not excessive.


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    Title :

    Propfan Test Assessment (PTA): Flight test report


    Contributors:
    Little, B. H. (author) / Bartel, H. W. (author) / Reddy, N. N. (author) / Swift, G. (author) / Withers, C. C. (author) / Brown, P. C. (author)

    Publication date :

    1989-04-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Propfan Test Assessment (PTA)

    Little, B. H. / Poland, D. T. / Bartel, H. W. et al. | NTRS | 1989



    Propfan Test Assessment (PTA)

    B. H. Little / D. T. Poland / H. W. Bartel et al. | NTIS | 1989