The Rotorcraft Dynamics Division, Aeroflightdynamics Directorate, U.S. Army Aviation Research and Technology Activity has developed the General Rotorcraft Aeromechanical Stability Program (GRASP) to perform calculations that will assess the stability of rotorcraft in hovering flight and ground contact conditions. The program is designed to be state-of-the-art, hybrid, finite-element/multibody code that can be applied to all existing and future helicopter configurations. While GRASP was specifically designed to solve rotorcraft stability problems, its innovative structure and formulation allow for application to a wide range of structures. This manual describes the preparation of the input file required by Version 1.03 of GRASP, the procedures used to invoke GRASP on the NASA Ames Research Center CRAY X-MP 48 computer, and the interpretation of the output produced by GRASP. The parameters used by the input file are defined, and summaries of the input file and the job control language are included.


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    Title :

    General Rotorcraft Aeromechanical Stability Program (GRASP) Version 1.03. User's Manual


    Contributors:
    A. S. Hopkins (author) / D. L. Kunz (author)

    Publication date :

    1988


    Size :

    64 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





    General Rotorcraft Aeromechanical Stability Program (GRASP): Theory manual

    Hodges, Dewey H. / Hopkins, A. Stewart / Kunz, Donald L. et al. | NTRS | 1990


    General Rotorcraft Aeromechanical Stability Program (GRASP): Theory Manual

    D. H. Hodges / A. S. Hopkins / D. L. Kunz et al. | NTIS | 1990