Accession Number : AD0417234

Title :   TOPICS ON FLEXIBLE AIRPLANE DYNAMICS. PART III. COUPLING OF THE RIGID AND ELASTIC DEGREES OF FREEDOM OF AN AIRFRAME,

Corporate Author : SYSTEMS TECHNOLOGY INC INGLEWOOD CALIF

Personal Author(s) : Pass,H.R. ; Pearce,B.F. ; Wolkovitch,J.

Report Date : JUL 1963

Pagination or Media Count : 70

Abstract : The dynamic coupling of rigid and elastic de grees of freedom of an airplane are described by two methods. In the first, coupling is de scribed by the changes in airframe character istic equation roots caused by the introduc tion of coupling terms to the equations of mo tion. The second method employs modal response coeffients to compare the relative amplitudes of rigid and elastic degrees of freedom at each coupled mode frequency. Simple literal expres sions are obtained for each of these descrip tors and physical interpretations given. Time vector diagrams are also used to show the major parameters affecting coupling. (Author)

Descriptors :   (*AIRFRAMES, AEROELASTICITY), DYNAMICS, STABILITY, DETECTORS, DEFORMATION, FLIGHT CONTROL SYSTEMS, ELASTIC PROPERTIES, AIR, AUTOMATIC PILOTS, EQUATIONS, MOTION.

Distribution Statement : APPROVED FOR PUBLIC RELEASE