The work is devoted to the investigation of the possibilities of using piezoceramic actuators in small-sized aircrafts. The rational relation of the length to the width of the actuator is determined, which is extremely necessary for the design of small-sized aircraft. As a result of the research, mathe-matical dependencies were obtained for predicting the amplitude of oscillations depending on the ge-ometric dimensions of the piezoelectric plate. The adequacy of model calculations has been confirmed by experimental studies.