A comprehensive aeroelastic analysis is developed to investigate plain trailing edge flaps for vibration control. Results from the analysis are compared with experimental wind tunnel data and that of another comprehensive analysis. Correlation between predicted and measured frequencies is generally fair. The forward flight trim control predictions also show fair correlation. For the baseline rotor with no trailing edge flap motion, overall correlation of blade bending and torsional moments is fair. Significant descrepancies are observed in 3/rev inplane bending. While trailing edge flap moving +/-4 deg of angle at 5/rev, the analysis overpredicts the 5/rev flatwise bending moments due to the flap motion, while the blade torsional moment is predicted fairly well. Varying the phase angle of the flap motion had a significant effect on the blade 4/rev flatwise and inplane bending loads. The computational results were found to be sensitive to variations in the modeling data.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Rotors with trailing edge flaps: Analysis and comparison with experimental data


    Additional title:

    Hubschrauberrotoren mit Vorderkantenklappen: Analyse und Vergleich mit Meßdaten


    Contributors:
    Milgram, J. (author) / Chopra, I. (author) / Straub, F. (author)

    Published in:

    Publication date :

    1998


    Size :

    14 Seiten, 26 Bilder, 3 Tabellen, 27 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





    Comprehensive modeling of rotors with trailing edge flaps

    Straub, F.K. / Charles, B.D. | Tema Archive | 1999




    Trailing-edge flaps

    Gates, S.B. | Engineering Index Backfile | 1937