Radiative Ignition of Fine-Ammonium Perchlorate Composite Propellants

摘要

Radiative ignition of quasi-homogeneous mixtures of ammonium perchlorate (AP) and hydroxyterminated polybutadiene (HTPB) binder has been investigated experimentally.Solid propellants consisting of fine AP (2 mu m) and HTPB binder (approx 76/24% by mass) were ignited by CO_2 laser radiation.The lower boundary of a goo-go ignition map (minimum ignition time vs.heat flux) was obtained.Opacity was varied by adding carbon black up to 1% by mass.Ignition times ranged from 0.78 s to 0.076 s for incident fluxes ranging from 60 W/cm~2 to 400 W/cm~2.It was found that AP and HTPB are sufficiently strongly