METHOD OF SUCCESSIVE ACTIVE IDENTIFICATION OF AERODYNAMIC CHARACTERISTICS OF AUTOMATICALLY CONTROLLED FLYING VEHICLES ACCORDING TO TEST RESULTS

摘要

FIELD: aero-space engineering; flight tests of flying vehicles of new arrangement or for creating information part of self-adaptive autopilots. SUBSTANCE: when rudders of flying vehicle are controlled by test signal, low- and high-frequency harmonic components of test signal are fed to autopilot input variations of components of moment due to angle of attack or slip angle are excited by high-frequency components which are lesser by several times as compared with maximum variations of components of moment caused by deflections of rudders; they ensure limitation of permissible magnitudes of speeds of autopilot drives. Low-frequency components are used for creating area of change of angles of attack and slip angles. High-frequency components are fed to side channel in succession to input of rudder and aileron drive; forced motions excited by these components at aileron and rudder respectively are suppressed at one of rudders by compensating signal; parameters of motion and deflection of rudders in succession for each period of high-frequency motion longitudinal channel or effectiveness of elevators for their succession at small slip angles in side channel and direction of aileron depending on components of coefficients of aerodynamic moment due to angle of attack and slip angle for entire mode are recorded. EFFECT: enhanced accuracy of results of identification of aerodynamic characteristics; extended range of identification of aerodynamic characteristics and enhanced reliability of flight of automatically controlled flying vehicle.