Design Point Analysis of Distributed Propulsion System
Current high bypass ratio turbofan engines are reaching a higher limit of bypass ratio.The turboelectric distributed propulsion system(TeDP)uses electricity to transmit power from the core-engine turbine to number of propulsors.This novel concept can dramatically increase bypass ratio to achieve lower fuel consumption.This paper,firstly,put forward a new system modulus on the N3-X airframe,which includes two turbofan core-engines; each drives a free power turbine,and a propulsor unit.Secondly,the paper introduced the boundary layer ingesting modelling method and how to assess its impacts on engine performance.Finally,an examination of the system design point thermodynamic performances was made.At all examined conditions,60-80%of total thrust at design point from the propulsors unit offers the best specific fuel consumption.However,this value is sensitive to propulsor intake pressure loss and bypass ratio of the core turbofan engine.
TeDP BLI Distributed Propulsor N3-X Thrust split
C. Liu J. Teng
School of Aeronautics and Astronautics,Shanghai Jiao Tong University,Shanghai,200240,P.R.China
国际会议
The 5th International Symposium on Jet Propulsion and Power Engineering(第五届喷气推进与动力工程国际会议)
北京
英文
1-9
2014-09-15（万方平台首次上网日期，不代表论文的发表时间）