LONGITUDINAL COMBUSTION INSTABILITIES IN RAMJET ENGINES - IDENTIFICATION OF ACOUSTIC MODES

被引：34

作者：

CRUMP, JE

SCHADOW, KC

YANG, V

CULICK, FEC

机构：

[1] CALTECH,JET PROPULS & APPL PHYS,PASADENA,CA 91125

[2] CALTECH,JET PROPULS,PASADENA,CA 91125

来源：

JOURNAL OF PROPULSION AND POWER | 1986年 / 2卷 / 02期

关键词：

AIRCRAFT ENGINES; JET AND TURBINE - Ramjet;

D O I：

10.2514/3.22852

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Longitudinal combustion instabilities in liquid-fueled ramjet engines have been investigated with attention focused on determination of the acoustic mode structures. Detailed pressure measurements, including both amplitude and phase, were made at ten positions spanning the length of the engine. The experimental data have been analyzed using two linear acoustic models. Four distinct modes were observed for various inlet/combustor combinations. These results help identify the mechanisms exciting low-frequency pressure oscillations in ramjet engines.

引用

页码：105 / 109

页数：5