摘要
<正> 涡轮发动机一直是通过转速来操纵的。可是同一转速而进气总温变时状态也变,低总温时增压比、推力就高,高总温时则相反。凶此按与推力较直接联系的参数来操纵就有可取之处。普惠公司JT3D-9D系列发动机已用进排气总压比、简称发动机总压比EPR=p5~*/p1~*作推力主操纵参数,而以转速操纵作备用。
EPR (Engine Pressure Ratio) , I.E.the ratio of exhaust to inlet total Pressure, has already been used in a lot of jet engines as the main operation control in place of the traditional engine rpm.In this paper, specific formulas to determine similarized thrust R/Po from EPR and flight Mach number are derived, which could be used to calculate or measure the engine thrust. Engineering applications of the basic principles are discussed for reference.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1989年第8期B443-B446,共4页
Acta Aeronautica et Astronautica Sinica
关键词
涡喷发动机
进排气
总压比
EPR
EPR, similarized thrust, thrust coefficient, matching line.
