Combustion of Nomex® III fabric in potential space habitat atmospheres:: Cyclic flame spread phenomenon

被引：11

作者：

Kleinhenz, Julie E. ^{[1
]}

T'ien, James S. ^{[1
]}

机构：

[1] Case Western Reserve Univ, Dept Mech & Aerosp Engn, Cleveland, OH 44106 USA

来源：

COMBUSTION SCIENCE AND TECHNOLOGY | 2007年 / 179卷 / 10期

基金：

美国国家航空航天局;

关键词：

flame splitting; Nomex flammability; periodic upward flame spread; two-stage pyrolysis; upward flame spread limit;

D O I：

10.1080/00102200701386172

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Upward flame spread over Nomex((R)) III fabric was tested in enriched oxygen, reduced pressure atmospheres. These are potential conditions for future space habitat environments. Flammability boundaries as a function of oxygen percentage and pressure were determined experimentally. Upward spread is possible at 24% O-2 for pressures as low as 7 psia. For most cases, upward spread is cyclic in nature. A cycle consists of flame growth, flame split, blowoff of the downstream '' secondary '' flame and re- growth of the upstream '' primary '' flame. This article presents a detailed description of this interesting and unexpected phenomenon, and suggests that a two- stage solid pyrolysis is its cause.

引用

页码：2153 / 2169

页数：17