Projected engine is based on the engine GEnx prototype，The General Electric
GEnx ("General Electric Next-generation") is an advanced dual rotor, axial flow, highbypass
turbofan jet engine in production by GE Aviation for the Boeing 787 and 747-
8.The double -circuit turbojet engine (TRDD) has a design that allows to move
additional masses of air that passes through the outer circuit of the engine. This design
provides the higher efficiency than the usual TRD. The first concept of TRDD in
aircraft engineering was proposed by the Ukrainian designer of the aircraft engines
Архип Люлька . On the basis of the experiments conducted since 1937, Архип
Люлька applied for the invention of two -circuit TRD .
But critical assessment of the situation reveals that The main advantage of this
engine is their high efficiency. Disadvantages -Large weight and size. Especially the
large diameter of the fan, which leads to a significant air resistance in the flight. The
scope of such engines is a mid -length commercial airliner and military transportation
aviation. So engine necessitates changes in order to improve previously mentioned
qualities such as: thrust, efficiency, fuel consumption, durability, weight, and size.
