组合发动机多种燃料和多种氧化剂的当量比计算法

CALCULATION METHODS ON EQUIVELENCE RATIO OF MULTI-PROPELLANT FOR PROPULSION SYSTEM

关键词:  混合式发动机  多元燃料发动机  燃烧  计算

Key words:  Compound engine  Multifuel engine  Combustion  Computation

摘要:

提出了两种计算燃料和氧化剂当量比的方法。方法之一是“混合气法”;假方法之二是“当量油气比法”。燃烧过程中使用的燃料种类数及氧化剂种类数均没有限制。还假设了一个组合发动机作为例题。它包括火箭发动机、冲压发动机、涡喷发动机及加力燃烧室。使用的燃料为液氢、甲烷、丙烷和航空煤油。氧化剂为液氧和空气。

Abstract:

Two calculation methods on equivelence ratio of multi-propel-lant for propulsion system are presented in this paper. One is"mixed gas method", and another is "equivelence fuel air ratio method". There is no limit to the number of fuel and oxidant species used simultaneously. A compound engine which consists of rocket ramjet, turbo-jet and after-burner is taken as an example. The fuels used are liquid hydrogen, methane, propane and kerosene. The oxidants used are liquid oxygen and air.