Donets O. Scientific basis for development of modern jet regional passenger aircraft.

The Thesis is devoted to the development of the scientific foundations of creating a modern new-generation regional jet aircraft for 75 – 85 passengers. The concept and scientific basis of the integrated design methodology for a family of regional passenger aircraft have been developed including the following: the concept, principles and methods of integrated design; the concept of development of a power plant; the concept of development of a flight control system. The paper presents a number of developed structural and technological solutions that were used to create the airframe of the An-148-100/An-158 aircraft family. The developed aerodynamic configuration made it possible to create a family of high-wing aircraft with a flight speed of up to 870 km/h (M = 0.8) and the aircraft lift-to-drag ratio in cruise flight Kcruis = 15.8. New design and technological solutions to ensure the static strength and life-time of regional passenger aircraft have been developed. The implementation of the developed scientific foundations and methods of integrated design made it possible to organize production of An-148-100 and An-158 aircraft. New technological processes and equipment have been developed and introduced including la-ser control and measuring complex to control the holding frames. The tooling design was developed using computers and three-dimensional electronic mathematical models of the aircraft elements.