Effect of aging on ignition delay times of a composite solid propellant under CO2 laser heating
COMBUSTION SCIENCE AND TECHNOLOGY, cilt.127, sa.1-6, ss.319-331, 1997 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 127 Sayı: 1-6
- Basım Tarihi: 1997
- Doi Numarası: 10.1080/00102209708935699
- Dergi Adı: COMBUSTION SCIENCE AND TECHNOLOGY
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.319-331
- Orta Doğu Teknik Üniversitesi Adresli: Hayır
Özet
In this paper, the effect of aging on the ignitibility and reproducibility of a composite solid propellant was investigated. Ignition delay times of solid propellant samples undergone different degrees of aging were determined under various levels of incident CO2 laser energy fluxes. Micrographs obtained from an Environmental Scanning Electron Microscope (ESEM) showed that the surfaces of the aged samples exhibited fiber-like structure as compared to the heterogeneous structure of the as-machined sample. The porosity of the fiber-like structure increased with the degree of aging. Based upon the results of experiments, it was observed that aged propellant samples require much longer heating time to reach self-sustained combustion condition than the as-machined sample at lower energy fluxes (around 50 W/cm(2)). However, at higher energy fluxes (around 150 W/cm(2)), the effect of aging on the ignition delay times became smaller.