This report presents the results of a study on vibrational deicing of main and tail rotor blades through higher harmonic shaking of the blades with aerodynamic, mechanical, and hydraulic shakers. Studies were made of various locations for mounting shakers, the forces and frequencies to deice, types of shakers, concept effectiveness, energy requirements, system reliability, system maintainability, weights, costs, aircraft performance penalties, impact on countermeasure methods, effects on aircraft components, and applicability to main and tail rotor blades of both metal and composite construction. Ratings of systems to vibrate blades are compared; electrical control diagrams for shaker mechanisms are presented; and results of a breadboard test are included. A bibliography is presented of reports pertinent to vibrational deicing of rotor blades. (Author)


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    Titel :

    Vibratory Ice Protection for Helicopter Rotor Blades


    Beteiligte:
    H. E. Lemont (Autor:in) / H. Upton (Autor:in)

    Erscheinungsdatum :

    1978


    Format / Umfang :

    174 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch