MATHEMATICAL MODELING OF DYNAMICS AND LOADING OF THE MAIN ROTOR OF A TRANSPORT HELICOPTER

Abstract

The development of a direction oriented to creating and anticipating the functioning of mathematical models (MM) of objects - their mathematical doubles is shown on the example of calculating the dynamic characteristics of the main rotor of a transport helicopter and loading its most loaded part - the blade in a horizontal flight. The relevance of such an approach is noted due to the laboriousness and limited capabilities of ground-based experimental installations and flight experiments. Using the example of a transport helicopter, the results of MM and numerical computer calculations of the dynamics and loading of the main rotor are given under the given initial conditions with the purpose of preliminary evaluation of the helicopter's strength. It is noted that the method of calculation analysis allows us to analyze the patterns and features of the rotor dynamics. The condition for the application of this method is the mathematical models for the functioning of aircraft and the availability of information on the helicopter – mass-inertial, stiffness and aerodynamic characteristics