The book includes 43 revised and edited condensed papers on fundamentals of gaseous and heterogeneous deflagrations and detonations and applications of detonations to chemical propulsion written by international experts in detonation physics, chemistry, and propulsion from 9 countries. The book is published in connection with the International Colloquium on Application of Detonation for Propulsion held in St. Petersburg, July 6-9, 2004. The volume is addressed to researchers, power plant designers and engineers, and can serve as a reference book for graduate studies in detonation physics and chemical propulsion.