Aerospace Instrument-Making Annotation << Back RESEARCH OF PRINCIPLES AND DEVELOPMENT OF ALGORITHMS FOR DIAGNOSTICS OF CRITICAL FLIGHT CONDITIONS AT HIGH ANGLES OF ATTACK, RELATED TO LOSS OF CONTROL IN LATERAL MOTION V.I. Akhrameev, G.I. Dzhandzhgava, V.M. Shibaev, D.V. Shoulepov Based on the analysis of flight accidents statistics highlighted the most common typical situations characterized by some common features, in particular, flight conditions at high angles of attack. Approach of automatic alarm system algorithms based on the reference model which describes aircraft dynamic in the process of controlled motion is suggested. Describes the basic principles of diagnostic algorithms, developed the alarm algorithm related to loss of control in lateral motion with account of interaction in the roll channels and yaw. Сarried out mathematic simulation with the use of records of flight tests on the stall, which confirmed the effectiveness of the proposed methods and algorithms that provide timely warning the crew about the development of a dangerous mode. Key words: diagnostics, stall, angle of attack, critical flight condition, alarm. Contacts: E-mail: akhrameev_vi@mail.ru, E-mail: rpkb@rpkb.ru, E-mail: dvs04@mail.ru, E-mail: v.shibaev@yahoo.com Pp. 39-57.