Modeling of Product Life Cycle Stages Optimization Taking into Consideration Uncertainty of the Main Parametrical Variables

Modern trends in the development of military and civil aviation are aimed at the constant growth of cruising and limit flight speeds of promising aircraft. The largest aviation powers (Russia, the USA, the EU, China, Japan) have created supersonic passenger and military aircraft and are talking about creating hypersonic aircraft. The pace of development of industrial technologies requires a significant reduction in the development of aviation equipment, so the advanced military aircraft of the 5th generation (Su-57, F-22, J-20, F-35) were developed within 10-15 years, and the requirements to the terms of creation of advanced aircraft complexes currently is no more than 8 years. These facts require a significant optimization of the aircraft life cycle stages, in particular, a significant volume of the development stage. In this paper, we consider the process of multi-criteria optimization of aircraft parameters at the stage of development and initial coordination of the minimum aerodynamic drag head-end of the aircraft fuselage, and assess the impact of this optimization on the life cycle of the product.