APPLICATION OF A GENETIC ALGORITHM FOR OPTIMIZATION OF THE PNEUMOHYDRAULIC SHOCK ABSORBER OF THE HELICOPTER LANDING GEAR

The development of an impact protection system based on a pneumohydraulic shock absorber of a helicopter landing gear is a complex task leading to the problem of multidimensional global optimization with limitations. The goal of optimization is to maximize the absorption of landing impact energy. The objective function depends on seven optimization parameters that determine the characteristics of the shock absorber. Each of the parameters is subject to limitations related to the design requirements of the system. The pneumohydraulic shock absorber model was developed in the Simcenter Amesim software. The shock absorber model was optimized using a genetic algorithm. As a result, a set of improved shock absorber parameters was obtained, in which the landing overload decreased by 15.15 %, and the vibration attenuation time decreased by more than 2 times.