A Global Study of the Performances of a New Turbofan Configuration

Abstract

In this paperwork we are studying a turbofan engine with mixed separate flows where the primary flow it is initiated separately from the secondary flow which by it’s configuration helps improving the thrust and a reduction of the specific consumption. The thrust growth it is made by an air feed infusion, the infusion it’s made by the mix of air feed flown by the fan’s runners and compressor’s runners using air intakes with a different geometric configuration.

Detailed Gas Dynamic Study of Performances for Two Types Turbofan Configurations

“…The total specific actual work [7] of turbine has the same configuration with a small modification of fan actual work coefficient because of the bypass ratio is different defined.…”

“…The operating principle of the clasical turbofan engine is presented in Fig.1. The new turbofan [7] is a different gas-dynamic configuration and a technical constructive solution of the inlet of air flows, is a dual-rotor engines with the inlet of primary flow separately from the inlet secondary air flow, comes from separated rotors, the primary air flow comes from LPC rotor and the secondary air flow comes from the FAN rotor. The thrust of engine is the same sum of the primary flow thrust and secondary flow thrust.…”