Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back On the Analysis of Robust Stability of the Longitudinal Motion of a Maneuverable Aircraft N.E. ZUBOV, V.N. RYABCHENKO The article discusses robust stability under the maximum permissible deviations of the parameters of the control object matrix. Statements on the stability of the control object matrix are formulated, with the use of which an analytical analysis of robust stability is possible. Using the proposed statements, the analysis of the robust stability of the longitudinal motion of a maneuverable aircraft type aircraft is carried out. Keywords: robust stability, linear control object, algebraic Lyapunov equation, maximum singular number of a matrix, longitudinal motion, aircraft. DOI: 10.25791/pribor.6.2021.1264 Pp. 10-15.