Pot Life Problem and its measure with a reduced smoke propellant production
✍ Scribed by Harusuke Tokui; Akira Iwama
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 409 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0721-3115
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Typical reduced smoke type composite propellants mainly composed of hydroxyl‐terminated polybutadiene (HTPB) and ammonium perchlorate (AP) have a drawback that these propellant grains have a high response function of the burning rate to cause acoustic pressure oscillation. The addition of a small fraction (0.5% ∼ 1.2wt%) of zirconium (Zr) or zirconium oxide powders to propellant compositions has been known to be effective for suppressing such a combustion instability. It is also notified, however, Zr powder would incur the acceleration of urethance forming reaction so as to make the pot life of the HTPB/AP propellant dough shorter. This paper reports that tetracycline (TC) is available to offset such a trouble in curing process brought about by Zr powder addition.