B-28 超音速機用インタータービン・バイパス可変サイクルエンジンの概念検討 : 第2報:システム統合(システム・運用,一般講演)

概要

論文の詳細を見る
Variable Cycle Engine for Supersonic Propulsion is a Propulsive System which consists of intake, turbo fan engine and CD nozzle and it is necessary to optimize by matching the operating condition of intake and engine which change depending on Mach number and flying condition and also by matching the engine mass flow and intake and nozzle mass flow. The present study examines Inter-turbine Bypass VCE which I proposed in the last report from the viewpoint of supersonic propulsive system integration. This engine is a variable cycle engine with the exit area made variable by fixing the entrance area of high-pressure and low-pressure turbine. By expanding the exit area, high-pressure spool speed increases and by changing LPT exit area, low-pressure spool speed changes. Therefore, it is possible to enhance accelerating performance in transonic conditions by increasing HPC spool speed and decreasing BPR. In supersonic cruise, it is possible to optimize the matching of intake and engine and maintain the operating condition of the highest net thrust by changing the fan spool speed at constant thrust and controlling intake back pressure. In this study, I examined the variable cycle which induces supersonic propulsive system integration.
公益社団法人日本ガスタービン学会の論文
2009-10-21