Accession Number : AD0751148

Title :   Coordinate Stabilization for a Flexible Aircraft during Flight in a Turbulent Atmosphere,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Udilov,V. V.

Report Date : 08 SEP 1972

Pagination or Media Count : 12

Abstract : The problem is considered of automatically controlling aircraft altitude and pitch angle in the duck system. The aircraft dynamics is described by a system of linear differential equations with constant coefficients: three equations of motion of the center of gravity and rotation of the aircraft as a solid body, and a combination of equations for the flexible oscillations of an elastic fuselage in the plane of longitudinal symmetry. It is assumed that the autopilot acts on the flaps in changing the pitch and attack angles, the generalized coordinates characterizing the bending oscillations of the fuselage, and the nose controlling surface, as well as in changing the slope of the trajectory. (Author)

Descriptors :   (*AUTOMATIC PILOTS, *STABILIZATION SYSTEMS), (*SUPERSONIC AIRCRAFT, TURBULENCE), AIRFRAMES, CONTROL SURFACES, OSCILLATION, ANGLE OF ATTACK, EQUATIONS OF MOTION, NUMERICAL ANALYSIS, USSR

Subject Categories : Aircraft
      Flight Control and Instrumentation

Distribution Statement : APPROVED FOR PUBLIC RELEASE