Accession Number : AD0661988

Title :   THE THEORETICAL DETERMINATION OF NORMAL MODES AND FREQUENCIES OF VIBRATION,

Corporate Author : ADVISORY GROUP FOR AERONAUTICAL RESEARCH AND DEVELOPMENT PARIS (FRANCE)

Personal Author(s) : Minhinnick,I. T.

Report Date : APR 1956

Pagination or Media Count : 52

Abstract : The various methods that have been devised for the determination of the natural frequencies and normal modes of aircraft are discussed and their accuracy and the amount of work that they entail are compared. The discussion is mainly from the point of view of the flutter analyst, who commonly bases his analysis on the normal modes. An extensive bibliography is given in Appendix I. In Appendix II Duncan's displacement functions are given for the cases of a cantilever in bending and in torsion, and in Appendix III the escalator method is described. (Author)

Descriptors :   (*AIRCRAFT, VIBRATION), FREQUENCY, RESONANT FREQUENCY, ACCURACY, BIBLIOGRAPHIES, BENDING, TORSION, CANTILEVER BEAMS, FLUTTER, MATHEMATICAL ANALYSIS

Subject Categories : Aerodynamics
      Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE