Accession Number : AD0722992

Title :   Bestimmung der Kopplungsglieder und der Bewegungsgleichungen Einer aus Mehreren Elastomechanischen Teilsystemen Zusammengesetzten Flugkonstruktion (Determination of the Coupling Terms and Equations of Motion of an Elastomechanical Flight Construction System Composed of Several Substructues),

Corporate Author : DEUTSCHE FORSCHUNGS- UND VERSUCHSANSTALT FUER LUFT- UND RAUMFAHRT E V BRUNSWICK (WEST GERMANY)

Personal Author(s) : Breitbach,Elmar

Report Date : 05 APR 1970

Pagination or Media Count : 12

Abstract : The theoretical relations for the determination of the vibration behaviour of an elastomechanical system, for instance a flight construction, which is composed of several substructures, the dynamic parameters of which are known, are presented. The governing dynamic equations are formulated in terms of normal coordinates and the coupling terms appearing in the energy equations of the composite structure are derived first for the coupling terms appearing in the energy equations of the composite structure are derived first for the general case and after that for some practical important coupling conditions. The applicability of the described method is investigated for two examples, first for the elastic coupling of two simple two-degree of-freedom systems and secondly for the problem of an elastic coupling of two tiptanks on the wings of an aircraft. (Author)

Descriptors :   (*AIRFRAMES, VIBRATION), AEROELASTICITY, EXTERNAL STORES, AERODYNAMIC CHARACTERISTICS, THEORY, FUNCTIONS(MATHEMATICS), WEST GERMANY

Subject Categories : Aircraft
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE